* Flood warnings in effect for much of the D.C. area into the overnight hours *
10:05 p.m. update: The heavy rain has eased across the DMV, but light to moderate showers continue to spiral through the area for the next few hours. Flood warnings remain in effect for much of the area into the overnight, as indicated by the green shading in the map below. With some rain still falling, Reagan National has already received 1.95 inches today, with 2.50 inches at Dulles and 1.4 inches at BWI. The 2.50 inches at Dulles is the most on record for any day in March, surpassing the previous record of 2.30 inches in 2011.
Original post from 4:33 p.m.
We knew the longest dry spell since last December had to come to an end at some point. It did so in a big way today, with periods of heavy rainfall that have challenged some records. In our western areas, rainfall near two inches has introduced the potential for flooding this evening, as heavy rain continues. This storm is headed out of here late tonight, but our weather will stay a bit unsettled into Friday.
Through tonight: Rain will persist into the evening, heavy at times, although it will taper as we get past sunset. With one to two inches already common, another inch or so may fall in spots. Particularly in Northern Virginia, the rain may cause some streams to overflow and for water to collect in low-lying areas.
Once we get near and past midnight, we should see rain end. Some drizzle might stick around through Friday morning. Lows are mostly in the upper 30s and lower 40s.
View the current weather at The Washington Post.
Tomorrow (Friday): The coastal storm is gone, but a second cold pocket aloft will dive into our area. This should promote some shower development during the day. So, skies will be variably cloudy, and some midday or afternoon raindrops are a risk. There could even be some snow grains or soft hail mixed in at times if activity is strong enough. Highs will be mainly in the low to mid-50s, but it will feel colder, with winds from the west gusting to near 30 mph.
Rain: The tallies are still rising, but we can take stock of where we stand through 4 p.m. Totals are 0.99 inches for D.C., 1.78 inches for Dulles, and 0.85 inches for Baltimore. The total at Dulles has destroyed the old daily record of 1.29 inches. It’s racing toward the daily record for all of March, as well. The top spot for any day in March at that location since the 1960s is 2.30 inches in 2011.
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