In what has been a tame severe weather season in the Washington, D.C. area, Tuesday night was true to form. Despite the severe thunderstorm watch issued for the area and several flash flood warnings, neither severe weather nor flooding was reported in the immediate metro region.
The closest severe weather occurred in Frederick and Washington counties in Maryland, and the eastern panhandle of West Virginia according to the National Weather Service. A few reports of hail up to 1” in diameter, downed trees, and flash flooding were logged.
Closer to the District, much-needed rain fell, with average amounts around 0.5” - but with significant variability. Case in point: Dulles received 0.93”and Reagan National (DCA) 0.51”, but BWI got just 0.12”. The heaviest amounts fell around Great Falls and Potomac where a few spots got more than 1”.
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The hit-or-miss nature of recent rains have resulted in widely varying monthly totals. Dulles’ rain total this month has actually been more than an 1” above normal, whereas BWI’s is more than 1.5” below normal. DCA is running a small deficit of 0.45”.
As last night’s storms rolled in they occasionally produced some ominous cloud forms including shelf clouds and mammatus. And behind the storm, some vibrant rainbows emerged and were photographed.
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