George BM

Just measured an additional 0.2" from this activity. (Herndon, VA)

11/30/2025: T (A mix of rain/sleet from the 4am hour through about 9am. Intensity got up to light/moderate intensity at times. Temps: low/mid 30s 12/02/2025: T (Probably had a brief period of sleet w/ rain sometime between 4:30am and 5am when precip started before quickly changing to a cold rain that became moderate at times during the morning.) 12/05/2025: 1.2" (Flurries/very light snow starting in the 4am hour intensifying to light snow between 6am and 10am (light/moderate at times). Flurries to very light snow showers continuing through the rest of the morning ending during the 12pm hour.) Snow totals as of December 5th, 2025: 1.2"

Ha. That's right. Temporarily forgot about that one. Five times in the 00s. Wild indeed. Looking forward to adding to this tally tomorrow.

2002, 2005, 2007 and 2009.

IAD got down to 21F this morning. Coldest so far.

With some seeing measurable snow/sleet I'll start this up. Happy measuring. 11/30/2025: T (A mix of rain/sleet from the 4am hour through about 9am. Intensity got up to light/moderate intensity at times. Temps: low/mid 30s 12/02/2025: T (Probably had a brief period of sleet w/ rain sometime between 4:30am and 5am when precip started before quickly changing to a cold rain that became moderate at times during the morning.)

BWI: 50.8" DCA: 33.7" IAD: 53.7" RIC: 29.4" Tiebreaker (SBY): 27.9"

Thursday, December 4, 2025 3:58PM EST Extreme Cold, High Wind and Blizzard warnings are in place across the region in anticipation of the historic storm about to commence over the region. This storm will have many similarities to the Great Appalachians Storm of late November 1950 except the whole setup will be shifted east by a few hundred miles. … Nestor will continue to be absorbed into the large surface low deepening off the Carolinas over the next 12 hours or so as a result of the deep and record cold trough and embedded shortwave approaching the coast. Temps have already fallen into the teens northwest of I-95 and will fall through the night into the low to mid-single digits areawide on strong NNW winds gusting to around 40 to 50 mph. This will bring windchills down into the -20 to -30F range in the greater DC metro area, hence the Extreme Cold Warning in place. As the night wears on the large upper-level trough will start to cutoff as the shortwave rounding the base of said trough takes on a strongly negative tilt. This will result in the surface low deepening explosively as it begins to track to the northwest back towards the Mid-Atlantic coastline. This will throw snow back into our region from east to west through the predawn hours reaching the Blue Ridge by sunrise. Friday, December 5th and Saturday, December 6th will be two days that are remembered for the long time in these parts. As the surface low continues to deepen bands of very heavy snow will be thrown west across the region as NNW winds gust over 60 mph areawide with some gusts pushing 75 mph in the mountains and near the coast of the Chesapeake Bay and the Potomac River. Temperatures will remain in the 0 to 5F range throughout the day as well, meaning windchills will be as low as -25 to -30F. Snowfall rates of 3 to 4 inches per hour will be common leading to whiteout conditions. The snow, cold and wind combo will make even being outside very dangerous if not adequately bundled up for the elements. The heaviest snow and highest winds will last through the late evening and into the early overnight hours. But the storm will be long from done. The surface low will stall and spin over or just off of the Delmarva allowing blizzard conditions with heavy snow and strong winds to continue throughout the day on Saturday. Temps on Saturday may actually warm into the double-digits… generally 10-15F raising windchills into the -5 to -15F range. It won’t be until late Saturday night into Sunday morning when the surface low rotates to the east and out to sea allowing the snow to taper off from west to east throughout the night. Snowfall totals: Snowfall totals will be truly historic and life-altering with 45-65” being commonplace across the Greater Metro area. However, owing to the high winds and the low water content of the snow, snow drifts may be as high as 35 feet burying homes and businesses underneath the snow. Winds: Winds gusts will peak in the 60 to 70 mph range (locally 75 mph) from Friday afternoon through about midnight (12am) Saturday but will continue gusting over 50 mph through Saturday evening. Temperatures: Temperatures will fall into the lower single digits late tonight and hold steady within a few degrees of this through predawn Saturday before rising into the lower teens by Saturday afternoon.

Is the next skyrecho hitting earth yet?

Dulles got down to 33F. First morning that I'm noticing frost on the cars.

Occasional lightning/thunder here in Herndon.

IAD got down to 34F.

I remember this day very well. One of a few times during my grade-school years when there was a thunderstorm during school hours (5th grade). The good stuff was to my east but there was heavy rain and occasional lightning and it was really dark blue outside.

Schumacher actually has much of the area in 15% for Sunday. https://schumacher.atmos.colostate.edu/hilla/csu_mlp/csu_severe.php?date=20251016&version=2021&day=4&product=severe_ml_day4_gefso&day_str=1020&init=00

@bigtenfan@Scott747 Title update?