The severe wind outbreak of June 21, 2021
559 wind reportsNew York, Pennsylvania, Maryland and 20 more states
559 damaging wind reports across 23 states between 1:03 AM and 12:35 AM the next day CDT, 15 of them 65 knots (75 mph) or stronger; the strongest measured gust was 79 mph in Pershing County, NV. 12 hail reports and 4 tornadoes the same day. The 18th-most wind reports of any day since 1955.
Watch the day unfoldSevere wind day · June 21, 2021
How the day unfolded
Every damaging wind report of the day at its logged time, with the day's hail reports and tornadoes, and the counties they reached.
The day in numbers
- Wind reports
- 559
- 18th of 15,807 days with wind reports since 1955
- 75 mph or more
- 15
- 2 of 86 mph (75 knots) or more
- Strongest measured gust
- 79 mph
- 69 knots, Pershing County, NV
- Measured
- 6
- reports with an instrument reading; the rest are estimates from damage
- Killed by wind
- 0
- 0 injured
- Counties reporting
- 211
- in 23 states
Hour by hour
Damaging wind reports in each hour, Central Daylight Time.
The strongest winds
The 100 strongest reports with a speed. Measured gusts come from an instrument; estimated speeds are judged from damage.
| 5:19 PM | Aroostook County ME | 110 mph | Estimated |
| 4:46 PM | Aroostook County ME | 100 mph | Estimated |
| 7:10 PM | Northampton County PA | 81 mph | Estimated |
| 10:30 PM | Pershing County NV | 79 mph | Measured |
| 2:20 AM | Hillsdale County MI | 75 mph | Estimated |
| 2:30 AM | Allen County IN | 75 mph | Estimated |
| 1:52 PM | Allegheny County PA | 75 mph | Estimated |
| 1:54 PM | Butler County PA | 75 mph | Estimated |
| 1:58 PM | Beaver County PA | 75 mph | Estimated |
| 1:58 PM | Butler County PA | 75 mph | Estimated |
| 3:16 PM | Frederick County VA | 75 mph | Estimated |
| 3:39 PM | Washington County MD | 75 mph | Estimated |
| 3:58 PM | Adams County PA | 75 mph | Estimated |
| 4:05 PM | Adams County PA | 75 mph | Estimated |
| 10:50 PM | Burnet County TX | 75 mph | Estimated |
| 5:15 AM | Richland County OH | 70 mph | Estimated |
| 2:30 PM | Westmoreland County PA | 70 mph | Estimated |
| 3:45 PM | Franklin County PA | 70 mph | Estimated |
| 3:48 PM | Franklin County PA | 70 mph | Estimated |
| 4:50 PM | Knox County TN | 70 mph | Estimated |
| 2:46 AM | Allen County IN | 69 mph | Estimated |
| 12:45 PM | Franklin County NY | 69 mph | Estimated |
| 1:49 PM | Rockcastle County KY | 69 mph | Estimated |
| 1:51 PM | Allegheny County PA | 69 mph | Estimated |
| 1:51 PM | Allegheny County PA | 69 mph | Estimated |
| 2:01 PM | Allegheny County PA | 69 mph | Estimated |
| 2:01 PM | Allegheny County PA | 69 mph | Estimated |
| 2:10 PM | Allegheny County PA | 69 mph | Estimated |
| 2:20 PM | Westmoreland County PA | 69 mph | Estimated |
| 2:59 PM | Washington County PA | 69 mph | Estimated |
| 3:06 PM | Shenandoah County VA | 69 mph | Estimated |
| 3:10 PM | Westmoreland County PA | 69 mph | Estimated |
| 3:15 PM | Washington County MD | 69 mph | Estimated |
| 3:21 PM | Allegheny County PA | 69 mph | Estimated |
| 3:30 PM | Washington County MD | 69 mph | Estimated |
| 4:10 PM | Loudoun County VA | 69 mph | Estimated |
| 4:14 PM | Onondaga County NY | 66 mph | Measured |
| 6:04 PM | Anne Arundel County MD | 64 mph | Measured |
| 1:27 AM | Elkhart County IN | 64 mph | Estimated |
| 2:15 AM | Hillsdale County MI | 64 mph | Estimated |
| 2:25 AM | Hillsdale County MI | 64 mph | Estimated |
| 2:27 AM | Hillsdale County MI | 64 mph | Estimated |
| 4:25 PM | Claiborne County TN | 64 mph | Estimated |
| 8:45 PM | Bell County TX | 64 mph | Estimated |
| 5:27 AM | Lake County OH | 63 mph | Estimated |
| 6:09 AM | Stark County OH | 63 mph | Estimated |
| 6:13 AM | Stark County OH | 63 mph | Estimated |
| 11:50 AM | Cuyahoga County OH | 63 mph | Estimated |
| 12:04 PM | Ashtabula County OH | 63 mph | Estimated |
| 12:58 PM | Columbiana County OH | 63 mph | Estimated |
| 1:08 PM | Columbiana County OH | 63 mph | Estimated |
| 1:10 PM | Crawford County PA | 63 mph | Estimated |
| 1:13 PM | Tuscarawas County OH | 63 mph | Estimated |
| 1:21 PM | Preston County WV | 63 mph | Estimated |
| 1:21 PM | Columbiana County OH | 63 mph | Estimated |
| 1:24 PM | Beaver County PA | 63 mph | Estimated |
| 1:30 PM | Columbiana County OH | 63 mph | Estimated |
| 1:32 PM | Venango County PA | 63 mph | Estimated |
| 1:46 PM | Beaver County PA | 63 mph | Estimated |
| 1:50 PM | Beaver County PA | 63 mph | Estimated |
| 1:57 PM | Forest County PA | 63 mph | Estimated |
| 2:05 PM | Allegheny County PA | 63 mph | Estimated |
| 2:05 PM | Washington County PA | 63 mph | Estimated |
| 2:05 PM | Allegany County MD | 63 mph | Estimated |
| 2:05 PM | Allegheny County PA | 63 mph | Estimated |
| 2:05 PM | Jefferson County OH | 63 mph | Estimated |
| 2:07 PM | Hancock County WV | 63 mph | Estimated |
| 2:09 PM | Jefferson County OH | 63 mph | Estimated |
| 2:10 PM | Hancock County WV | 63 mph | Estimated |
| 2:10 PM | Hancock County WV | 63 mph | Estimated |
| 2:15 PM | Mineral County WV | 63 mph | Estimated |
| 2:17 PM | Brooke County WV | 63 mph | Estimated |
| 2:20 PM | Allegheny County PA | 63 mph | Estimated |
| 2:23 PM | Mineral County WV | 63 mph | Estimated |
| 2:25 PM | Westmoreland County PA | 63 mph | Estimated |
| 2:35 PM | Westmoreland County PA | 63 mph | Estimated |
| 2:35 PM | Hampshire County WV | 63 mph | Estimated |
| 2:38 PM | Armstrong County PA | 63 mph | Estimated |
| 2:38 PM | Essex County NY | 63 mph | Estimated |
| 2:39 PM | Armstrong County PA | 63 mph | Estimated |
| 2:40 PM | Allegheny County PA | 63 mph | Estimated |
| 2:45 PM | Allegany County MD | 63 mph | Estimated |
| 2:46 PM | Allegheny County PA | 63 mph | Estimated |
| 2:53 PM | Addison County VT | 63 mph | Estimated |
| 2:54 PM | Allegheny County PA | 63 mph | Estimated |
| 2:55 PM | Indiana County PA | 63 mph | Estimated |
| 2:57 PM | Washington County MD | 63 mph | Estimated |
| 2:58 PM | Indiana County PA | 63 mph | Estimated |
| 3:00 PM | Jefferson County PA | 63 mph | Estimated |
| 3:00 PM | Indiana County PA | 63 mph | Estimated |
| 3:01 PM | Clarion County PA | 63 mph | Estimated |
| 3:04 PM | Allegheny County PA | 63 mph | Estimated |
| 3:06 PM | Shenandoah County VA | 63 mph | Estimated |
| 3:07 PM | Westmoreland County PA | 63 mph | Estimated |
| 3:07 PM | Westmoreland County PA | 63 mph | Estimated |
| 3:10 PM | Jefferson County PA | 63 mph | Estimated |
| 3:10 PM | Washington County MD | 63 mph | Estimated |
| 3:11 PM | Berkeley County WV | 63 mph | Estimated |
| 3:12 PM | Westmoreland County PA | 63 mph | Estimated |
| 3:14 PM | Wayne County KY | 63 mph | Estimated |
By state
| New York | 140 | 66 mph |
| Pennsylvania | 140 | — |
| Maryland | 50 | 64 mph |
| Kentucky | 46 | — |
| West Virginia | 42 | — |
| Ohio | 37 | — |
| Tennessee | 28 | — |
| New Jersey | 13 | — |
| Virginia | 11 | — |
| Vermont | 8 | — |
| Delaware | 8 | — |
| Michigan | 7 | — |
| Texas | 6 | 60 mph |
| Indiana | 5 | — |
| Maine | 4 | — |
| New Hampshire | 3 | — |
| Florida | 3 | 61 mph |
| Mississippi | 2 | — |
| North Carolina | 2 | — |
| Alabama | 1 | — |
| Massachusetts | 1 | — |
| Missouri | 1 | — |
| Nevada | 1 | 79 mph |
Counties with the most wind reports
- Oneida CountyNY · 15 reports
- Allegheny CountyPA · 15 reports
- Washington CountyNY · 15 reports
- Westmoreland CountyPA · 13 reports
- Chester CountyPA · 13 reports
- Lewis CountyNY · 13 reports
- Baltimore CountyMD · 10 reports
- Washington CountyMD · 9 reports
- Northampton CountyPA · 9 reports
- Cortland CountyNY · 8 reports
Hail and tornadoes that day
12 hail reports, 0 of 2 inches or more; 4 tornadoes.
| 4:08 PM | Hancock County TN | 1.50 |
| 5:05 PM | Coos County NH | 1.50 |
| 12:25 PM | Ashtabula County OH | 1.25 |
| 4:20 PM | Addison County VT | 1.25 |
| 1:01 AM | Ingham County MI | 1.00 |
| 1:12 PM | Cortland County NY | 1.00 |
| 2:22 PM | Tompkins County NY | 1.00 |
| 2:22 PM | Tompkins County NY | 1.00 |
| 2:49 PM | Cortland County NY | 1.00 |
| 3:14 PM | Madison County NY | 1.00 |
| 5:08 PM | Caledonia County VT | 1.00 |
| 5:30 PM | Grafton County NH | 1.00 |
- EF1 tornado1:07 AM CDT
- EF1 tornado1:52 AM CDT
- EF0 tornado1:53 PM CDT
- EF1 tornado4:38 PM CDT
2021 · On this date in other years · The biggest severe wind days
- 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.
- Reporting has grown with population, spotter networks and the internet, so counts from different decades are not directly comparable.
- 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.