Steamy, unstable air blasting north ahead of a southward sliding cold front fueled a vigorous line of thunderstorms Tuesday evening.
The storms began as a cluster of individual storms to our north and west before they congealed into a single line over the metro region.
Severe weather reports were scattered, but there were multiple instances of of large hail (at least half an inch in diameter) and damaging winds (58 mph or higher) logged by the National Weather Service. See the list at the bottom of this post.
The storms, whose clouds tops penetrated 50,000 feet into the atmosphere (reaching temperatures as cold as -75C), unleashed torrential rain and frequent lightning.
Rainfall amounts were generally around 0.5-1″ (0.91″ at Reagan National and 0.48″ at Dulles), but some areas received as much as 1-2″ in just 1-2 hours.
Here are some photos from the storm:
Here is some video:
The storm in Haymarket (wind):
The storm in Arlington (lightning):
PRELIMINARY LOCAL STORM REPORT...SUMMARY NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 915 PM EDT TUE MAY 27 2014 ..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON... ..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.... ..REMARKS.. 0427 PM HAIL 1 SW LEWISTOWN 39.52N 77.43W 05/27/2014 E0.90 INCH FREDERICK MD PUBLIC NICKEL SIZED HAIL REPORTED AT MOUNTAINDALE CONVENIENCE STORE 0439 PM HAIL 2 SSW LEWISTOWN 39.51N 77.43W 05/27/2014 E0.75 INCH FREDERICK MD TRAINED SPOTTER 0555 PM HAIL POTOMAC 39.03N 77.20W 05/27/2014 E1.00 INCH MONTGOMERY MD PUBLIC AT INTERSECTION OF RIDGE RD AND RIVER RD 0613 PM TSTM WND DMG 2 WSW MONTGOMERY VILLAG 39.17N 77.22W 05/27/2014 MONTGOMERY MD EMERGENCY MNGR TREES DOWN ON ROUTE 355 AND HIGH POINT DR 0632 PM TSTM WND GST 2 N GERMANTOWN 39.20N 77.26W 05/27/2014 M58 MPH MONTGOMERY MD PUBLIC 50 KT GUST MEASURED IN GERMANTOWN MD. 0635 PM HAIL COLLEGE PARK 39.00N 76.93W 05/27/2014 E0.75 INCH PRINCE GEORGES MD PUBLIC DIME SIZE HAIL REPORTED BY PUBLIC. 0635 PM TSTM WND DMG 1 S RESTON 38.93N 77.35W 05/27/2014 FAIRFAX VA TRAINED SPOTTER LARGE PINE TREE DOWN AT CORNER OF N SHORE DR AND NORTHGATE SQ 0711 PM TSTM WND DMG ARLINGTON 38.88N 77.10W 05/27/2014 ARLINGTON VA EMERGENCY MNGR TREE DOWN IN 2500 BLOCK OF WASHINGTON BLVD IN ARLINGTON. 0735 PM TSTM WND DMG WARRENTON 38.71N 77.79W 05/27/2014 FAUQUIER VA TRAINED SPOTTER LARGE TREE DOWN ON MAIN ST IN WARRENTON 0758 PM TSTM WND DMG 3 ENE EAGLE HARBOR 38.58N 76.64W 05/27/2014 CALVERT MD EMERGENCY MNGR TREE DOWN AT THE INTERSECTION OF LOWERY ROAD AND HATFIELD ROAD.