1:30 p.m. update: Through 1 p.m., Washington had picked up 3.44 inches of rain since Friday from this storm. This event is now the greatest three-day winter rainstorm in recorded history in Washington (for the months of December, January and February), as discovered by Capital Weather Gang’s Ian Livingston.
Rainfall amounts of 3 to 4 inches have been widespread, with pockets of higher totals.
Because of all the water, many waterways are at flood stage and flood warnings are in effect into this evening (and longer along the Potomac River).
Radar shows the back edge of the rain retreating to the east, but scattered showers remain possible through the afternoon, especially east of Interstate 95. By evening, this should all finally end.
8:45 a.m. update: Flood warnings remain in effect for parts of the area as seen below through midday, as showers continue to cycle through. Where it’s not raining, drizzle remains.
TODAY’S DAILY DIGIT
3/10: Another day better spent indoors, perhaps completing that holiday shopping list, watching football or otherwise hiding from the showery chill outside.
Today: Occasional showers. Chilly and raw. Highs: low-to-mid 40s and dropping.
Tonight: Showers ending by early evening. Lows: 33-37.
Tomorrow: Mostly sunny, breezy, milder. Highs: near 50 to mid-50s.
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FORECAST IN DETAIL
After breaking the record for wettest year ever yesterday, water-weary Washingtonians will have to wait one more day for a break in the rain, as showers continue across the region through this afternoon. Everyone starts to dry out later this evening, setting the stage for a bright but breezy Monday. A frontal passage then brings seasonably chilly air back into town on Tuesday, before a modest warming trend begins on Wednesday.
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Today (Sunday): Light rain or drizzle early this morning is a harbinger of things to come today. We’ll probably see occasional bouts of showers or drizzle through this afternoon as the center of low pressure passes over the Mid-Atlantic. With the rain, overcast skies, and a cold breeze from the north around 10 mph, temperatures are mainly steady, or may even fall a few degrees during the day, starting in the low-to-mid 40s this morning and only near 40 this afternoon. Confidence: Medium-High
Tonight: Any lingering showers/drizzle should vacate the area by early evening. Clouds slowly dissipate thereafter, eventually yielding a partly cloudy scene in the pre-dawn hours of Monday. With the clouds slow to erode, and no strong push of cold air behind the storm, overnight lows only drop into the mid-30s, which is chilly but relatively mild for mid-December. Northwesterly winds are light, on the order of 5 to 10 mph. Confidence: Medium-High
Tomorrow (Monday): As the storm pulls farther away off the New England coastline and high pressure expands across the Midwest, mostly sunny skies develop here, but so do breezy conditions. Highs are milder, near 50 to the mid-50s. But they may feel as much as 5 to 10 degrees colder at times. Winds blow from the northwest around 10 to 15 mph with gusts as high as 25 to 30 mph. Confidence: Medium-High
Tomorrow night: Winds tamp down a bit from the afternoon, although they may still gust from the northwest around 20 mph. With mostly clear skies and a colder air mass settling in, lows tumble into the upper 20s and low 30s. Confidence: Medium-High
A LOOK AHEAD
The colder air fully filters in on Tuesday, when highs only manage to reach the mid-to-upper 40s under a mostly sunny sky. Winds could still be gusty from the northwest, especially during the first half of the day. Temperatures fall more substantially Tuesday night, settling into the mid-to-upper 20s. Confidence: Medium-High
Not much changes on Wednesday with high pressure overhead, although a modest warming trend should ensue. Highs rise into the mid-40s to low 50s amid another mostly sunny sky. Confidence: Medium-High