The severe wind outbreak of August 13, 2021

01

The day in numbers

Wind reports

303

on Friday, August 13, 2021

75 mph or more

5

0 of 86 mph (75 knots) or more

Strongest measured gust

74 mph

64 knots, Fauquier County, VA

Measured

20

reports with an instrument reading; the rest are estimates from damage

Killed by wind

0

0 injured

Counties reporting

132

in 22 states

02

Hour by hour

Damaging wind reports in each hour, Central Daylight Time.

03

The strongest winds

The 100 strongest reports with a speed. Measured gusts come from an instrument; estimated speeds are judged from damage.

Strongest wind reports, August 13, 2021

Time, CDT	Where	Speed	Knots	Type	Killed
2:15 AM	Pottawatomie County KS	75 mph	65	Estimated	0
1:40 PM	Hardy County WV	75 mph	65	Estimated	0
4:18 PM	Fauquier County VA	75 mph	65	Estimated	0
4:20 PM	Benton County AR	75 mph	65	Estimated	0
7:12 PM	Sussex County DE	75 mph	65	Estimated	0
3:22 PM	Fauquier County VA	74 mph	64	Measured	0
2:00 AM	Douglas County KS	72 mph	63	Estimated	0
3:45 PM	Oklahoma County OK	70 mph	61	Estimated	0
8:00 PM	Custer County OK	70 mph	61	Estimated	0
1:40 AM	Lyon County KS	69 mph	60	Estimated	0
2:12 PM	Frederick County VA	69 mph	60	Estimated	0
3:20 PM	Montgomery County MD	69 mph	60	Estimated	0
3:30 PM	Montgomery County MD	69 mph	60	Estimated	0
3:45 PM	Howard County MD	69 mph	60	Estimated	0
4:00 PM	Fauquier County VA	69 mph	60	Estimated	0
4:10 PM	Baltimore MD	69 mph	60	Estimated	0
4:38 PM	Fairfax County VA	69 mph	60	Estimated	0
6:12 PM	Allegheny County PA	69 mph	60	Estimated	0
6:15 PM	Allegheny County PA	69 mph	60	Estimated	0
6:17 PM	Allegheny County PA	69 mph	60	Estimated	0
10:15 PM	Santa Cruz County AZ	68 mph	59	Measured	0
11:40 PM	Yavapai County AZ	67 mph	58	Measured	0
2:23 PM	Fulton County NY	64 mph	56	Measured	0
3:25 PM	Harmon County OK	64 mph	56	Measured	0
1:29 PM	Williamson County TN	64 mph	56	Estimated	0
3:40 PM	Oklahoma County OK	64 mph	56	Estimated	0
3:55 PM	Oklahoma County OK	64 mph	56	Estimated	0
12:23 AM	Maricopa County AZ	64 mph	56	Estimated	0
1:19 PM	Frederick County VA	63 mph	55	Measured	0
4:42 PM	Hall County TX	63 mph	55	Measured	0
7:35 PM	Custer County OK	63 mph	55	Measured	0
10:44 PM	Maricopa County AZ	63 mph	55	Measured	0
1:14 PM	Augusta County VA	63 mph	55	Estimated	0
1:50 PM	Jefferson County WV	63 mph	55	Estimated	0
2:55 PM	Summers County WV	63 mph	55	Estimated	0
3:30 PM	Loudoun County VA	63 mph	55	Estimated	0
3:40 PM	Howard County MD	63 mph	55	Estimated	0
3:44 PM	Loudoun County VA	63 mph	55	Estimated	0
3:45 PM	Howard County MD	63 mph	55	Estimated	0
3:45 PM	Fauquier County VA	63 mph	55	Estimated	0
3:45 PM	Fauquier County VA	63 mph	55	Estimated	0
4:18 PM	Prince William County VA	63 mph	55	Estimated	0
4:25 PM	Noble County OH	63 mph	55	Estimated	0
4:28 PM	Noble County OH	63 mph	55	Estimated	0
4:29 PM	Columbiana County OH	63 mph	55	Estimated	0
4:30 PM	Columbiana County OH	63 mph	55	Estimated	0
4:34 PM	Noble County OH	63 mph	55	Estimated	0
4:40 PM	Harford County MD	63 mph	55	Estimated	0
4:49 PM	Greene County PA	63 mph	55	Estimated	0
4:57 PM	Guernsey County OH	63 mph	55	Estimated	0
5:00 PM	Greene County PA	63 mph	55	Estimated	0
5:00 PM	Guernsey County OH	63 mph	55	Estimated	0
5:10 PM	Pendleton County WV	63 mph	55	Estimated	0
5:16 PM	Belmont County OH	63 mph	55	Estimated	0
5:19 PM	Greene County PA	63 mph	55	Estimated	0
5:29 PM	Beaver County PA	63 mph	55	Estimated	0
5:34 PM	Belmont County OH	63 mph	55	Estimated	0
5:34 PM	King George County VA	63 mph	55	Estimated	0
5:37 PM	Jefferson County OH	63 mph	55	Estimated	0
5:45 PM	Harrison County OH	63 mph	55	Estimated	0
5:45 PM	Fayette County PA	63 mph	55	Estimated	0
5:48 PM	Beaver County PA	63 mph	55	Estimated	0
5:48 PM	Jefferson County OH	63 mph	55	Estimated	0
5:48 PM	Beaver County PA	63 mph	55	Estimated	0
5:48 PM	Beaver County PA	63 mph	55	Estimated	0
5:50 PM	Jefferson County OH	63 mph	55	Estimated	0
5:53 PM	Beaver County PA	63 mph	55	Estimated	0
5:53 PM	Charles County MD	63 mph	55	Estimated	0
6:00 PM	Allegheny County PA	63 mph	55	Estimated	0
6:01 PM	Beaver County PA	63 mph	55	Estimated	0
6:01 PM	Jefferson County OH	63 mph	55	Estimated	0
6:01 PM	Beaver County PA	63 mph	55	Estimated	0
6:03 PM	Fayette County PA	63 mph	55	Estimated	0
6:03 PM	Washington County PA	63 mph	55	Estimated	0
6:05 PM	Westmoreland County PA	63 mph	55	Estimated	0
6:06 PM	Hancock County WV	63 mph	55	Estimated	0
6:10 PM	St. Mary's County MD	63 mph	55	Estimated	0
6:10 PM	St. Mary's County MD	63 mph	55	Estimated	0
6:10 PM	Allegheny County PA	63 mph	55	Estimated	0
6:20 PM	Beaver County PA	63 mph	55	Estimated	0
6:23 PM	Butler County PA	63 mph	55	Estimated	0
6:28 PM	Butler County PA	63 mph	55	Estimated	0
6:29 PM	Beaver County PA	63 mph	55	Estimated	0
6:31 PM	Fayette County PA	63 mph	55	Estimated	0
6:35 PM	Allegheny County PA	63 mph	55	Estimated	0
6:36 PM	Summit County OH	63 mph	55	Estimated	0
6:39 PM	Westmoreland County PA	63 mph	55	Estimated	0
6:40 PM	Allegheny County PA	63 mph	55	Estimated	0
6:45 PM	Allegheny County PA	63 mph	55	Estimated	0
6:51 PM	Beaver County PA	63 mph	55	Estimated	0
6:52 PM	Beaver County PA	63 mph	55	Estimated	0
6:58 PM	Westmoreland County PA	63 mph	55	Estimated	0
7:00 PM	Westmoreland County PA	63 mph	55	Estimated	0
7:06 PM	Sussex County DE	63 mph	55	Estimated	0
7:09 PM	Butler County PA	63 mph	55	Estimated	0
7:12 PM	Armstrong County PA	63 mph	55	Estimated	0
7:44 PM	Trumbull County OH	63 mph	55	Estimated	0
1:58 AM	Lyon County KS	62 mph	54	Measured	0
3:51 PM	Monroe County MI	62 mph	54	Estimated	0
1:20 PM	Rockingham County VA	61 mph	53	Measured	0

Show all 100 rows

04

By state

Severe weather reports by state, August 13, 2021

State	Wind reports	Strongest measured	Hail reports	Largest hail, in
Virginia	66	74 mph	2	1.75
Pennsylvania	53	61 mph	1	0.75
Maryland	39	58 mph	0	—
Ohio	37	61 mph	0	—
New York	33	64 mph	4	1.00
West Virginia	18	—	0	—
Arizona	14	68 mph	0	—
Oklahoma	9	64 mph	0	—
Tennessee	8	—	0	—
Arkansas	6	—	3	1.00
Kansas	4	62 mph	0	—
Delaware	3	—	0	—
California	2	61 mph	0	—
Georgia	2	—	0	—
Nevada	2	58 mph	0	—
Alabama	1	—	0	—
District of Columbia	1	—	0	—
Florida	1	—	0	—
Kentucky	1	—	0	—
Michigan	1	—	0	—
North Carolina	1	—	0	—
Texas	1	63 mph	0	—
Colorado	0	—	1	0.87
Wyoming	0	—	1	1.25

Show all 24 rows

Counties with the most wind reports

• Maricopa CountyAZ · 12 reports
• Beaver CountyPA · 11 reports
• Allegheny CountyPA · 9 reports
• Fauquier CountyVA · 9 reports
• Harford CountyMD · 7 reports
• Albany CountyNY · 6 reports
• Fulton CountyNY · 6 reports
• Howard CountyMD · 6 reports
• York CountyPA · 5 reports
• Ulster CountyNY · 5 reports

05

Hail and tornadoes that day

12 hail reports, 0 of 2 inches or more; 1 tornado.

Largest hail, August 13, 2021

Time, CDT	Where	Size, in
4:43 PM	Fairfax County VA	1.75
8:09 PM	Albany County WY	1.25
1:15 PM	Oneida County NY	1.00
3:52 PM	Benton County AR	1.00
3:55 PM	Benton County AR	1.00
4:05 PM	Benton County AR	1.00
4:07 PM	Broome County NY	1.00
6:13 PM	Albany County NY	1.00
8:53 PM	Scott County VA	1.00
4:24 PM	Montgomery County NY	0.88
5:19 PM	Park County CO	0.87
6:03 PM	Allegheny County PA	0.75

Show all 12 rows

• EF0 tornado7:15 PM CDT

2021 · On this date in other years · The biggest severe wind days

1. A report is a single damage or measurement report to the National Weather Service. Several reports can describe one gust front, so reports are not storms.
2. Reporting has grown with population, spotter networks and the internet, so counts from different decades are not directly comparable.
3. Thunderstorm wind reports start at 50 knots (58 mph). SPC began flagging measured against estimated speeds in 2006; earlier reports are shown as estimated.

Storm Prediction Center severe weather database, 1955 to 2025. A day is SPC’s calendar date in Central Standard Time; a severe wind day here has 300 or more damaging wind reports, or 15 or more of 75 knots (86 mph) or more.