| 2026-08-11 | 9:00 AM | 0.61 | NA | NA | NA | NA | | Afternoon thunderstorm and some overnight light rain. I was out elsewhere during the storm and see no signs of strong winds here, although reports of wind damage are widespread across the region. |
| 2026-08-10 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-08-09 | 20:00 PM | T | NA | NA | NA | NA | | Saturday storms passed to the north while I was out and it looks like there must have been a little rain that reached my gauge. |
| 2026-08-08 | 9:00 AM | 0.14 | NA | NA | NA | NA | | Gust front from storms way north pushed south and gust from from the south pushed north. Collision led to an east-west line of storms just south and it expanded northward a little while cells drifted east, so we got grazed with a short period of moderate-heavy rain and a nice view of updraft bases, rain shafts, and lightning looking south. |
| 2026-08-07 | 8:30 AM | 0.11 | NA | NA | NA | NA | | Afternoon thunderstorm dissipated upon approach. |
| 2026-08-06 | 8:30 AM | 0.28 | NA | NA | NA | NA | | Heavy shower beginning a bit before 3PM Wednesday. Did not notice if rain fell at other times. |
| 2026-08-05 | 8:30 AM | 0.15 | NA | NA | NA | NA | | Rain overnight and/or early morning today. No rain falling at obs time, street and grass are wet from recent rain. |
| 2026-08-04 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-08-03 | 9:30 AM | 0.86 | NA | NA | NA | NA | | intermittent moderate to heavy showers mid-day through early evening, a rumble or two of thunder |
| 2026-08-02 | 10:45 AM | 0.00 | 0.0 | NA | NA | NA | | Gauge was dry. Stayed in yard a while longer and within about 10 minutes sprinkles started. |
| 2026-08-01 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-07-31 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-07-30 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-07-29 | 9:00 AM | 0.92 | NA | NA | NA | NA | | All from afternoon storms. Here is my sig weather note: Most of the rain fell from 5:37 PM to 5:48 PM in a tremendous storm with high wind. Likely undercatch due to high wind during some of the peak rainfall. Many leaves and small branches stripped from trees and a few large limbs down. First some feeder cells blossomed as they moved from southwest to northeast passing to the west with only a little rain here, then the last one blossomed overhead and the main gust front and line from the west merged into it. A black updraft base passed over as a shelf cloud passed under it but the winds were not strong under and just behind the shelf cloud and the torrential rain began, blowing from the west and northwest a little. Then in the middle of the downpour the winds surged and ripped from the east and northeast and the rain blew and whipped in surges from the northeast with a barrage of nearby lightning that began when the heavy rain started and continued even as the rain decreased in intensity. MRMS shows an isolated rotation maximum a couple miles to the south during the strong northeast winds. |
| 2026-07-28 | 9:30 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-07-27 | 9:30 AM | T | NA | NA | NA | NA | | early afternoon towering cu passed overhead and I observed a few drops of rain on the deck |
| 2026-07-26 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-07-25 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-07-24 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-07-23 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-07-22 | 8:00 AM | 2.09 | NA | NA | NA | NA | | Afternoon/evening thunderstorms |
| 2026-07-21 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-07-20 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-07-19 | 11:45 AM | 0.55 | NA | NA | NA | NA | | Thunder began before 3pm, then a rapidly developing small cell passed overhead at 3:00 with large drops but mostly not heavy rain and was brief, then the main storm arrived at 3:30 with almost all of the rain falling in around 8 minutes and continuing showers for a couple hours. Lots of loud booming thunder. No hail - based on high VIL headed right toward me, I was carefully watching for hail and saw and heard none. Gusty winds, not extreme, with rain alternating falling at an angle from the northwest and the northeast and back and forth several times, during the storm and then in the continuing showers. |
| 2026-07-18 | 9:00 AM | 0.05 | NA | NA | NA | NA | | Overnight lightning and booming thunder began around or after 4:00 AM. Modest downpour of large drops began at 4:32 AM and lasted around 5 or 10 minutes. During the day yesterday, the thick pall of wildfire smoke which advected from Ontario blocked the sun more than a cirrostratus veil does, kept the temperature from rising as much, and reduced my daily solar panel production by more than 25% on an otherwise clear day. |
| 2026-07-17 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-07-16 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-07-15 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-07-14 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-07-13 | 9:30 AM | 0.00 | 0.0 | NA | NA | NA | | Afternoon light showers missed to the south, no rain here. Dew in gauge and on grass around gauge. |
| 2026-07-12 | 11:30 AM | 0.02 | NA | NA | NA | NA | | shower around 1:30 PM. At dusk, tall towers glaciated and produced occasional lightning to the west, passing from north to south. No rain or thunder here, just pretty views! |
| 2026-07-11 | 9:30 AM | 0.02 | NA | NA | NA | NA | | |
| 2026-07-10 | 10:00 AM | 0.20 | NA | NA | NA | NA | | Afternoon intense storm with bow echo headed straight for me and fell apart on its noisy thunderous approach and another intense storm developed further south along the outflow but the remainder of the first one blocked the view. All rain ended by roughly 6:30 PM with partial clearing. |
| 2026-07-09 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-07-08 | 9:30 AM | 0.20 | NA | NA | NA | NA | | At obs time, still cloudy with showers around but no rain now, no mist, no fog, still cloudy and moist but with dewpoints down to just the upper 60s. |
| 2026-07-07 | 13:00 PM | 0.79 | NA | NA | NA | NA | | Rain began around 9PM last night and ended overnight. Sultry, hazy day with mid-70's dew points, low clouds took a long time clearing out. Convection formed along a surge from the east as a backdoor front came through, cells moved southeast as development spread westward. Moderate amount of lightning, not nearly comparable to the previous day. Low overcast today with winds continuing from the northeast, but still 70s dew points. |
| 2026-07-06 | 9:00 AM | 1.28 | NA | NA | NA | NA | | Wow! A series of growing towers moving northeast passed over around 5pm, several briefly showing up on radar nearby. Then one broke through and reached 50,000 feet on radar, making a hot electrically active storm a few miles to the north and northeast as a stream of towers continued to form to the south-southwest and pass over, dry here except one big 3" splat and a few other isolated raindrops, did not see or hear hail. The storm to the northeast backbuilt as the outflow spread to the southwest, and the gust front came through and towers building overhead matured. Rain began at 6:31 pm, becoming heavy in wind-driven bursts as the rain would surge in gusts of strong wind from the east. We had tremendous frequent lightning and ground-shaking reverberating thunder. By 7:30 pm, the main storm had evolved to the southeast and rain had ended here. Another surge of storms came in from the southwest from an outflow boundary from the south from storms south of DC, giving a downpour with good lightning beginning at 8 and ending at 8:15 pm. Another came from the west along a long line at 11:05 pm, ending 11:20 pm. Reports of a lot of trees and wires down just a mile or couple miles to the northeast and east. |
| 2026-07-05 | 8:50 AM | 0.11 | NA | NA | NA | NA | | 80+ VIL storm with top over 50,000 feet passed a few miles to the north with lots of lightning, and more storms formed along outflow and passed a few miles to the south. Another area of light rain leftover from convection passed over later in the evening. |
| 2026-07-04 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-07-03 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-07-02 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-07-01 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-06-30 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-06-29 | 8:30 AM | 0.03 | NA | NA | NA | NA | | Yesterday's late obs included some rain that other sites may have in today's reading. Yesterday's light rain ended by late in the day, no rain overnight or this morning, still overcast this morning and everything is still wet. |
| 2026-06-28 | 11:30 AM | 0.27 | NA | NA | NA | NA | | Intermittent light rain from afternoon through overnight and this morning. Shower ended shortly before obs time but still misty with fine light spray falling. |
| 2026-06-27 | 11:30 AM | 0.11 | NA | NA | NA | NA | | Overnight rain. |
| 2026-06-26 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-06-25 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-06-24 | 9:00 AM | 0.81 | NA | NA | NA | NA | | Rain from morning until mid-afternoon, intermittently moderate to heavy. |
| 2026-06-23 | 8:45 AM | 0.12 | NA | NA | NA | NA | | Yesterday's afternoon/evening thunderstorms passed well to the south, only briefly moderate showers with no lightning or thunder here. Next batch of rain is arriving now with some fine spray of very light rain at obs time, pavement still dry. |
| 2026-06-22 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-06-21 | 14:00 PM | T | NA | NA | NA | NA | | A few drops of water and an upside down fly in the inner cylinder. Radar shows light showers passed through overnight. |
| 2026-06-20 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-06-19 | 9:30 AM | 0.02 | NA | NA | NA | NA | | yesterday morning's shower was included in yesterday's obs. Had additional light rain yesterday morning after obs time and overnight. |
| 2026-06-18 | 9:00 AM | 0.08 | NA | NA | NA | NA | | Brief downpour around 8:15 AM this morning for just a few minutes, preceded by very light rain. |
| 2026-06-17 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-06-16 | 8:20 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-06-15 | 9:00 AM | T | NA | NA | NA | NA | | Gauge dry today, observed large drops as rapidly building towers passed over around 9PM. Had towering cu in all directions and there were storms with lightning visible to the north and the south, and gust front from the north arrived around 8:40PM with gusty winds continuing for around an hour (maybe not all outflow, maybe some was mixing) |
| 2026-06-14 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-06-13 | 9:00 AM | T | NA | NA | NA | NA | | Found a tiny bit of water in the gauge, presumably from anvil of thunderstorm over Rockville and south. Had close-up view of the edge of that storm while in Rockville 7-8 PM, sharp vivid rainshaft move southeast to the west of Rockville, nice towers, some lightning. Spectacular orange and then pink sky to the east from Rockville as the storm moved east and the sun was setting. |
| 2026-06-12 | 8:20 AM | 0.18 | NA | NA | NA | NA | | Afternoon storms far to the west built a gust front which pushed out into the hot air ahead of it and passed through around 8 PM. Storm here was not intense and was brief without much lightning. |
| 2026-06-11 | 8:20 AM | 0.87 | NA | NA | NA | NA | | Thunderstorm with bursts of heavy rain 3:30-4:05 PM followed by light rain for an hour or two. Not a lot of lightning and it was mostly toward the rear of the storm. |
| 2026-06-10 | 9:30 AM | 0.25 | NA | NA | NA | NA | | Rain ended. Rain 7:30-8:30 AM this morning, will show up in totals reported tomorrow at other sites with earlier morning daily readings. |
| 2026-06-09 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-06-08 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-06-07 | 19:45 PM | 0.20 | NA | NA | NA | NA | | Was out when radar showed a heavy shower or thundershower came around 6:30 PM Saturday and was awakened by thunderstorm at 4:00 AM. |
| 2026-06-06 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-06-05 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-06-04 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-06-03 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-06-02 | 8:20 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-06-01 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-05-31 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-05-30 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-05-29 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-05-28 | 8:35 AM | 0.43 | NA | NA | NA | NA | | 0.35" in 5-10 minutes yesterday at around 10:00 AM in a heavy convective shower without lightning (sig wx report). Then, .08" additional in gauge this morning from several light rain showers at around 11:30 AM, 8 PM and other times. Sunny today to start a new dry period after this 1-week wet period that brought 4.68" of rain. Only 2 days with thunderstorms this month (several others had some in the area but no lightning or thunder observed here with those, just 2 here). |
| 2026-05-27 | 9:45 AM | 0.03 | NA | NA | NA | NA | | Brief shower just ended |
| 2026-05-26 | 8:20 AM | 0.03 | NA | NA | NA | NA | | Raining at obs time. |
| 2026-05-25 | 16:00 PM | 0.08 | NA | NA | NA | NA | | |
| 2026-05-22 | 8:20 AM | 0.19 | NA | NA | NA | NA | | Light rain resumed mid-afternoon and continued intermittently through the night and it is still raining lightly at obs time. |
| 2026-05-21 | 8:20 AM | 0.70 | NA | NA | NA | NA | | Thunderstorm in afternoon after gust front (not along or right behind - gap between). More evening showers and thunderstorms. Largest single-day total in 2 months (since mid-March). |
| 2026-05-20 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-05-19 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-05-18 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-05-17 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-05-16 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-05-15 | 8:20 AM | T | NA | NA | NA | NA | | sprinkles in afternoon, gauge had a little water |
| 2026-05-14 | 8:20 AM | 0.42 | NA | NA | NA | NA | | Thunderstorm around 8:30 PM with large drops but no hail. Several long horizontal very bright lightning flashes illuminating everything like daylight. |
| 2026-05-13 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-05-12 | 8:18 AM | 0.02 | NA | NA | NA | NA | | Light rain yesterday morning continued for a couple hours after yesterday's obs time. Became sunny by mid-afternoon and is sunny again today. |
| 2026-05-11 | 8:20 AM | 0.14 | NA | NA | NA | NA | | Intermittent light to very briefly moderate rain starting around 4PM. Very light rain began again in the morning and continuing at obs time. |
| 2026-05-10 | 12:00 PM | 0.00 | 0.0 | NA | NA | NA | | Gauge completely dry. Was in DC mid-day when showers passed through there, don't know if missed any sprinkles at home or not. |
| 2026-05-09 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-05-08 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-05-07 | 8:20 AM | 0.20 | NA | NA | NA | NA | | and .05" early yesterday in yesterday's reading for an event total of 0.25" |
| 2026-05-06 | 8:32 AM | 0.05 | NA | NA | NA | NA | | Rain began this morning, probably after 7:00 AM. |
| 2026-05-05 | 8:30 AM | 0.00 | 0.0 | NA | NA | NA | | Found a hard pebble (tiny rock) in the inner cylinder. Noticing many short trees (fruit trees or young trees or small species) have many dried up, falling, and disintegrating leaves due to the late freeze 2 weeks ago after early blooming and leaf-out. Up to half of the leaves on some trees are affected. |
| 2026-05-04 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-05-01 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-04-30 | 8:30 AM | 0.45 | NA | NA | NA | NA | | Showers late afternooon into late evening. Did not observe lightning or thunder. |
| 2026-04-29 | 8:35 AM | 0.02 | NA | NA | NA | NA | | |
| 2026-04-28 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-04-27 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-04-26 | 11:00 AM | 0.24 | NA | NA | NA | NA | | Afternoon rain began after 3 or 4 PM. Grass still wet today at 11 AM, cloudy and cooler today. |
| 2026-04-25 | 9:00 AM | 0.02 | NA | NA | NA | NA | | Shower around 3-3:30 PM |
| 2026-04-24 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-04-23 | 9:00 AM | 0.05 | NA | NA | NA | NA | | |
| 2026-04-22 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-04-21 | 8:20 AM | 0.01 | NA | NA | NA | NA | | Sprinkles/light rain showers during the late morning. Frost this morning but by the time I got out, there was only frost at the bottom of the yard and the .01 in the gauge in the frosted area was liquid, and there was no frost or condensation on any part of the gauge. Hopefully there was no freeze damage to the vegetation which is now vulnerable due to early leaf-out, time will tell. |
| 2026-04-20 | 8:20 AM | 0.01 | NA | NA | NA | NA | | Light rain overnight or early morning again. Yesterday took a late reading after morning rain, so some of what was in my catch yesterday may be in other stations' catches today. |
| 2026-04-19 | 18:00 PM | 0.13 | NA | NA | NA | NA | | Overnight or morning showers, mid-day clearing. Didn't read gauge until 6PM. Other sites with early morning obs times may have some of this rain in tomorrow's reading. |
| 2026-04-18 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-04-17 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-04-16 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-04-15 | 8:20 AM | 0.05 | NA | NA | NA | NA | | Evening shower with large drops. Distant lightning to the north - no thunder (too far). Heavy dew this morning. |
| 2026-04-14 | 8:20 AM | T | NA | NA | NA | NA | | light shower around 11:30 AM. Trace in gauge, along with a blossom petal that made it into the inner cylinder. |
| 2026-04-13 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-04-12 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-04-11 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-04-10 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-04-09 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-04-08 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-04-07 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-04-06 | 8:00 AM | 0.44 | NA | NA | NA | NA | | Moderate to briefly heavy shower late morning followed by light rain into early afternoon, then clearing and mostly sunny with some cirrus. |
| 2026-04-05 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-04-04 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-04-03 | 9:30 AM | 0.03 | NA | NA | NA | NA | | No rain at obs time, low overcast continues |
| 2026-04-02 | 9:30 AM | 0.46 | NA | NA | NA | NA | | 0.43" sig weather report from a heavy thunderstorm with wind and a little small hail around 6PM, then 0.03" overnight or in the morning. Cool and dreary low overcast with misty spray (fine light rain) at obs time. Runoff into puddles and swales with raging currents yesterday was impressive immediately after the downpour despite less than a half inch of rain falling. It seems the soil is less permeable than usual. Perhaps it got unusually hard during the late summer into fall and winter drought and the unusually prolonged cold period in winter, and despite the unusually warm temperatures recently, it may still need soil insect activity and plant root zone growth to break it up and make it more permeable and it is too early in the season for that. |
| 2026-04-01 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-03-30 | 9:30 AM | 0.04 | NA | NA | NA | NA | | Morning showers. Sites with early morning reporting times will show these in tomorrow's reports. |
| 2026-03-29 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-03-28 | 10:00 AM | 0.15 | NA | NA | NA | NA | | today sunny and cold |
| 2026-03-27 | 8:20 AM | 0.08 | NA | NA | NA | NA | | raining at obs time |
| 2026-03-26 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-03-25 | 8:20 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-03-24 | 8:20 AM | T | NA | NA | NA | NA | | |
| 2026-03-23 | 8:20 AM | 0.12 | NA | NA | NA | NA | | band of showers passed through overnight |
| 2026-03-22 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-03-21 | 9:00 AM | 0.25 | NA | NA | NA | NA | | Rain began at around 5:00 PM, light rain through the evening, then more showers after 11 PM. |
| 2026-03-20 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-03-19 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-03-18 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-03-17 | 8:20 AM | 1.92 | NA | NA | NA | NA | | 1.48" (sig wx report) mostly from a series of 5 brief, heavy mid-day showers with very gusty winds and 0.44" later mostly with the cold front and associated high wind surges. There were also a few periods of light rain and misty spray around those events. No lightning seen, no thunder heard.
Grass is now crunchy frozen as it was soggy and that soil sogginess is now ice.
In the afternoon a couple hours after the heavy showers, I saw many branches down (did not see fallen trees) and saw many large mud and leaf clumps on a paved path through the woods - appears to be deposited from flooding that had subsided by the time I saw it and carried it from the areas adjacent to the path. |
| 2026-03-16 | 8:20 AM | 0.31 | NA | NA | NA | NA | | Showers afternoon into overnight. No rain falling at obs time. |
| 2026-03-15 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-03-14 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-03-13 | 8:20 AM | 0.46 | NA | NA | T | NA | | Morning rain gave way to around 4 hours of moderate snow beginning around 11 AM. The snow looked impressive and eventually began to stick to cold surfaces - deck, grass, trees, cars, and mailboxes. However, with the record heat of the past several days, there was melting even where it was sticking, it fell faster than it accumulated, just fast enough to exceed the melting rate on the coldest surfaces. So I have no measure of the snowfall amount although visually based on how it looked falling, I would guess it was around 3 inches of snowfall. The snow depth never reached 1 inch on the deck railing or likely on anything else. The sun came out by 4 PM and the snow partly melted. This morning the ground is partly covered. |
| 2026-03-12 | 8:20 AM | 0.21 | NA | NA | NA | NA | | 0.17" at 8PM after the 7PM storm and .04" more in the morning daily reading. Gauge may have missed much of the storm collection as rain was blowing horizontally and ground was uncharacteristically soggy for such a small amount of precip, all the more so given not much precip earlier this week (0.07" in last 5 days) and sunny hot days. Evening thunderstorm was brief and extremely intense, starting with a shelf cloud that had surged ahead of the storm and orange skies to the west behind the shelf cloud while the wind gusted from the west as it passed over. Then the storm moved in quickly from the southwest and the howling wind picked up, rain was blowing horizontally and visibility got down to near zero for a couple minutes. Intensity of rain and wind ramped down and soon it was calm with anvil rain and clearing to the west, and cleared completely quickly. Surprisingly, there were few branches down and no power loss, although yard waste bags full from spring clean-up were blown all the way across the street (usually in strong gusty winds, they just tip over). |
| 2026-03-11 | 8:20 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-03-10 | 8:20 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-03-09 | 8:20 AM | T | NA | NA | NA | NA | | |
| 2026-03-08 | 12:00 PM | 0.05 | NA | NA | NA | NA | | |
| 2026-03-07 | 12:00 PM | 0.02 | NA | NA | 0.0 | NA | | |
| 2026-03-06 | 8:20 AM | 0.22 | NA | NA | T | NA | | Heavy shower approximately 10 PM. Most of the day was foggy without rain. There are still some (slowly shrinking) snow patches in yards in the neighborhood, legacy of the Jan 25 snowcrete storm - less than yesterday but still some. Today marks 40 days after the storm, or 41 days including the day of the storm. |
| 2026-03-05 | 8:45 AM | 0.04 | NA | NA | T | NA | | Dense fog this morning. Still a few dwindling snow patches in neighborhood yards in shady spots like north-facing slopes. |
| 2026-03-04 | 9:30 AM | 0.35 | NA | NA | T | NA | | All rain, no frozen precip! Still some snow patches in shaded areas in yards in the neighborhood (not just shovel or plow piles). |
| 2026-03-03 | 11:30 AM | 0.19 | NA | NA | T | NA | | Snow mid-day to afternoon melted at first and then accumulated in grass, continued melting on paved surfaces. Accumulated less than half inch on my mailbox and appeared similarly on cars, but don't know how much melted before then. Overnight switched to light rain or freezing rain but did not see any glaze. Now it is just raining (light rain). Gauge had slush in it, had to bring it inside to melt to measure. Grass still covered in an icy skeleton lattice of yesterday afternoon's snow. |
| 2026-03-02 | 9:00 AM | 0.00 | 0.0 | NA | T | NA | | Still patches of snow cover in shaded areas despite warm afternoons the last two days. We still have not had completely bare ground since the Jan 25 storm, which makes 5 weeks of continuous snow cover (at least in patches). |
| 2026-03-01 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-02-28 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-02-27 | 8:20 AM | T | NA | NA | NA | NA | | Afternoon light rain dampened the ground and road but gauge only had a trace. Heavy frost this morning, outside surface of gauge covered in frost but inside not! |
| 2026-02-26 | 8:20 AM | T | NA | NA | NA | NA | | few sprinkles (rain) around 3:30 PM. |
| 2026-02-25 | 8:20 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-02-24 | 8:20 AM | 0.00 | 0.0 | NA | NA | NA | | Yesterday's obs was after snow ended. Earlier reporting stations may have still had light snow after their obs, resulting in non-zero totals reported today. |
| 2026-02-23 | 10:30 AM | 0.91 | NA | NA | 5.5 | 0.63 | | Storm total gauge catch 1.08". A lot of melting initially. Snowpack water is only around 70% of gauge catch since yesterday and only 58% of storm total. Also a lot of snow stuck to the tree canopy so didn't reach the ground yet, it is falling in clumps in the wind now. Snow depth ranged from 4 inches on the driveway and sidewalk to 6.5 inches at the deepest spot in the yard, with 6" common in more open areas and 5 to 5.5" elsewhere in the yard. Snow is sticky gloppy but not slushy, except in gauge it was slushy because it collected the liquid from initial melting period, while in snowpack that initial part ran off first. Due to melting on contact for a substantial fraction at the start, I have no snowfall estimate. |
| 2026-02-22 | 12:00 PM | 0.17 | NA | NA | T | NA | | Mixed light rain and snow this morning, melting on contact, everything is (slightly) above freezing. Residual snowpack from January 25 storm still covers the ground in patches, maybe 10% of ground covered. Ground is frozen in spots but is otherwise soft and squishy and water is pooling, probably frozen underneath preventing percolation. Note late obs time - other sites with earlier obs times will have less precip reported today and more tomorrow. |
| 2026-02-21 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-02-20 | 10:00 AM | 0.69 | NA | NA | 0.5 | NA | | Morning rain. Waited until rain ended, so 0.69" is the storm total. To compare against other locations with earlier obs times, you'll need to compare their 2-day totals. Ground still has patchy snow cover from the Jan 25 storm, roughly 20% snow covered up to around 2" in depth (not including plow piles). Accounting for the patchy snow cover, I am estimating 0.5" snow depth as trace (T) is clearly inadequate, it is more. |
| 2026-02-19 | 8:20 AM | 0.01 | NA | NA | 1.0 | NA | | Ground still is around 60% snow covered with depth up to 3", so I'll go with an average of 1" including the bare areas. The streak is now 26 consecutive days of snow cover, since the big Jan 25 storm that brought 2" of water, much of which fell as sleet on top of the snow before the precip changed to sleet. |
| 2026-02-18 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-02-17 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-02-16 | 10:00 AM | 0.52 | NA | NA | 3.5 | 1.35 | | All rain. Collected core samples, melted to 1.53" and 1.17", going with average of 1.35". Depth 3" in most spots but up to 5", 3" tended to be on the low end - skewed distribution. |
| 2026-02-15 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-02-14 | 16:45 PM | 0.00 | 0.0 | NA | 5.0 | 1.43 | | This afternoon's melting finally made the top crust (several inches thick of crust, not a thin crust) penetrable so I can make core measurements. I took 3 core samples from representative areas and got 1.56", 1.45", and 1.29". Top of crust was rather uniformly 5" above ground although there seemed to be variability of how much snow was underneath this crust. A few places had different depth, ranging from 3.5" to 6.5" but those were outliers, almost everywhere it was very close to 5". With rain tomorrow, we'll see whether the snowpack holds the extra water in place or if melt runoff plus rain runoff prevails. |
| 2026-02-13 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-02-12 | 8:20 AM | T | NA | NA | NA | NA | | flurries at obs time |
| 2026-02-11 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-02-10 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-02-09 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-02-08 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-02-07 | 0:00 AM | 0.02 | 0.3 | 0.02 | 7.0 | NA | | Evening light snow, fluffy dusting. Measuring now that precip appears ended because I am not trapsing through the snowcrete to reach the gauge in the backyard in 50 MPH winds in the morning - calm and mild (26 deg F) now before the arctic front blasts in later overnight. Gauge (outer cylinder) depth around 1/4 inch, melted down to just short of .02" when funneled to inner cylinder (after bringing the sample inside the house). Sticking ruler into the previous ruler holes in the snowcrete show depth ranging from 5.5 to 9.5 inches with 6.5 to 7.5 most common, average and median are around 7 inches now. Afternoon days with a little liquid in the street gutters reveal melting in progress as it has been a little warmer with several hours of temperatures near or above freezing. |
| 2026-02-06 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-02-05 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-02-04 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-02-03 | 9:45 AM | 0.00 | 0.0 | NA | 8.5 | NA | | It's been more than a week and the several-inch-thick ice crust has hardened even more and is impossible to break through without a long sharp instrument - stomping and heel kicking does not break through. I used a screwdriver with a 12-inch blade (e.g., not counting the handle). I was able to dig down to the grass and stick my ruler in. It appears there has been hardly any melting (too cold) or sublimation (too glued, not like loose snow) or compaction (too rigid) - it is the same as immediately after the storm ended. Conditions are unsuitable for collecting core samples, so I can't vouch for the water content but likely not changed much. |
| 2026-02-02 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-02-01 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-01-31 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-01-30 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-01-29 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-01-28 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-01-27 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-01-26 | 9:30 AM | 0.90 | 3.0 | 0.90 | 8.0 | 1.97 | | Note yesterday's reading was at noon so the storm partitioning among the two days may differ from other stations. Today's report is mostly sleet. Storm total in gauge was 1.97" melted. Cores today had 1.82" in typical spot (8" depth) and 2.41" in deeper spot (10" depth) and expect no melting in cores (frozen ground and air temps in teens (deg F)). Found 3" depth in the gauge (no inner cylinder of course) and also 3" in the area on the deck I swept off at the time of yesterday's obs (serves as my snowboard). That makes the storm total at least 10" (e.g., yesterday measured 7" in gauge column of outer cylinder but might already have been a little compressed, plus 3" additional in today's obs). Going with 8" for snowpack depth based on measuring predominantly 8" in yard, with a few spots ranging from 6" to 10". |
| 2026-01-25 | 12:00 PM | 1.07 | 7.0 | 1.07 | 7.0 | 1.07 | | Snow started mixing with sleet in the morning by around 9AM, with increasing fraction of sleet over time, and precipitation is still continuing, expected to last much of the day. Outer cylinder of gauge had 7" depth, melted down to 1.07" including volume of 3 dead ants. Yard mostly had 6" though I found a few spots with 7" including on the deck. Likely compression due to sleet on top, so I do not have a proper measurement of snowfall depth. Everything was frozen well before the snow started and temperatures are still in the teens (deg F), so nothing lost to melting. |
| 2026-01-24 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-01-23 | 8:20 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-01-22 | 8:20 AM | T | NA | NA | NA | NA | | There were some radar echoes passing through. I did not observe precip and with the dry air, thought it would have sublimated on the way down, but I found a little water (T, clearly < .01") in the gauge. |
| 2026-01-21 | 8:20 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-01-20 | 8:20 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-01-19 | 10:00 AM | 0.02 | NA | NA | T | NA | | Light snow in afternoon, did not stick at first even on deck or railing so no way to measure depth of snowfall and never completely covered the ground. Sunny with snow patches on grass at obs time. |
| 2026-01-18 | 11:00 AM | 0.15 | NA | NA | 0.0 | NA | | Precip overnight ended before obs time and ground is bare and wet and not frozen. |
| 2026-01-17 | 11:40 AM | 0.05 | 0.5 | 0.05 | T | NA | | Overnight and (mostly) morning snow. Precip ended before obs time, so this is the storm total. Snow is melting quickly, max was approximately a half inch on the deck railing which was below freezing after the past few cold days and nights. Snow never completely covered the grass (not bare patches, just not deep enough to cover). |
| 2026-01-16 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-01-15 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-01-14 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-01-13 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-01-12 | 8:20 AM | 0.01 | NA | NA | NA | NA | | few snowflakes around 1:30pm as shower with visible precip shaft passed to the south. Then, more convection passed to the north with pretty, sharp, vigorous-looking towers, not tall like summer but still nice. Several other periods of sprinkles/light rain from a series of small convective bands through the afternoon. Thought gauge would have only T but instead it had a little more than .01" (closer to .01 than .02). |
| 2026-01-09 | 8:20 AM | 0.00 | 0.0 | NA | NA | NA | | appeared to be heavy dew. radar shows overnight light rain just to the north and BWI reported trace. Gauge had many tiny water drops on the cone and hardly anything in the inner cylinder, so I think it's dew and not trace of rain. |
| 2026-01-08 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-01-07 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-01-06 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-01-05 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-01-04 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-01-03 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-01-02 | 9:00 AM | 0.00 | 0.0 | NA | NA | NA | | |
| 2026-01-01 | 13:00 PM | 0.01 | NA | NA | T | NA | | overnight snowsquall while sleeping, awakened by tone alert snow squall warning and went back to sleep after checking radar and seeing it would be a little while before arrival. By the time I got up, sunny areas were bare and shaded areas had patches of snow. Melted gauge catch .01" |