National Weather Service United States Department of Commerce

Back-to-Back Pacific Storms to Impact the West Coast; Heavy Snow in the Central Appalachians

Back-to-back powerful Pacific storm systems to impact the Pacific Northwest and northern California through the end of this week with heavy rain, flooding, strong winds, and higher elevation mountain snow. A strong, long-duration atmospheric river will accompany the Pacific storms, bringing excessive rainfall and flash flooding to southwest Oregon and northwest California through the week. Read More >

April 27-28, 2011 Severe Weather
(19 Tornadoes in the WFO Sterling CWA)

 

Storm Survey Results: - Click on the location in the table for more information!

Location Start/
End Time
Event Type Path Length Path Width
Stafford/Prince William Counties
Southeast of Triangle
Apr. 27
6:15 pm-
6:22 pm
EF-0 Tornado
65 mph
2.0 mi Unknown
Prince George's County
1 SE Friendly
Apr. 27
7:06 pm-
7:07 pm
EF-0 Tornado
70 mph
0.4 mi 75 yds
Prince George's County
1 N Clinton
Apr. 27
7:12 pm-
7:13 pm
EF-0 Tornado
70 mph
0.2 mi 50 yds
Prince George's County
Andrews AFB and Camp Springs
Apr. 27
7:16 pm-
7:17 pm
EF-0 Tornado
70 mph
0.8 mi 100 yds
Prince William County
Nokesville and Bristow
Apr. 27
10:46 pm-
11:01 pm
EF-1 Tornado
90 mph
5.8 mi 125 yds
Fairfax County
Reston
Apr. 27
11:25 pm-
11:28 pm
EF-0 Tornado
80 mph
1.2 mi 75 yds
Allegany County
2N Town Creek
Apr. 28
1:27 am-
1:28 am
EF-0 Tornado
80 mph
0.5 mi 75 yds
Allegany County
3NW Green Ridge
Apr. 28
1:35 am-
1:35 am
EF-0 Tornado
80 mph
0.1 mi 75 yds
Rockingham/Shenandoah Counties
Fulks Run to St. Luke
Apr. 28
2:12 am-
2:41 am
EF-2 Tornado
130 mph
33.2 mi 400 yds
Augusta
Churchville
Apr. 28
2:17 am-
2:23 am
EF-1 Tornado
100 mph
4 mi 150 yds
Rockingham
Linville
Apr. 28
3:01 am-
3:02 am
EF-1 Tornado
90 mph
0.9 mi 50 yds
Shenandoah/Frederick Counties
NE of Strasburg to just N of Middletown
Apr. 28
3:45 am-
3:49 am
EF-0 Tornado
70 mph
4.3 mi 175 yds
Rockingham County
Keezletown
Apr. 28
3:55 am-
3:58 am
EF-1 Tornado
90 mph
2.7 mi 150 yds
Montgomery County
North of Poolesville
Apr. 28
6:45 am-
6:47 am
EF-0 Tornado
65 mph
0.8 mi 50 yds
Carroll County
Westminster
Apr. 28
7:37 am-
7:38 am
EF-0 Tornado
65 mph
0.6 mi 50 yds
Baltimore County
2E Hampstead
Apr. 28
8:09 am-
8:11 am
EF-0 Tornado
65 mph
1.1 mi 50 yds
Baltimore County
2 WNW Hereford
Apr. 28
9:54 am-
9:54 am
EF-0 Tornado
70 mph
0.1 mi 75 yds
St. Marys County
Breton Bay
Apr. 28
11:25 am-
11:29 am
EF-1 Tornado
90 mph
3.3 mi 50 yds
Calvert
Lusby
Apr. 28
11:41 am-
11:43 am
EF-0 Tornado
70 mph
1.8 mi 50 yds

 

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