Air Quality Concerns; Fire Weather; Extreme Heat; Flash Flooding

Wildfire smoke continues to result in poor air quality from the Upper Midwest into the Northeast. Dangerous heat and fire weather concerns for portions of the Four Corners region into the central Great Basin. Heavy rainfall and flash flooding possible for the Southeast through Monday. For Hawaii, gusty trade winds a drier weather could result in any fires that start to spread rapidly. 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