The severe wind outbreak of June 9, 2011
380 wind reportsConnecticut, Pennsylvania, Kansas and 24 more states
380 damaging wind reports across 27 states between 1:04 AM and 11:16 PM CDT, 9 of them 65 knots (75 mph) or stronger; the strongest measured gust was 72 mph in Salem County, NJ. 427 hail reports and 3 tornadoes the same day.
Watch the day unfoldSevere wind day · June 9, 2011
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
- 380
- 98th of 15,807 days with wind reports since 1955
- 75 mph or more
- 9
- 3 of 86 mph (75 knots) or more
- Strongest measured gust
- 72 mph
- 63 knots, Salem County, NJ
- Measured
- 20
- reports with an instrument reading; the rest are estimates from damage
- Killed by wind
- 0
- 1 injured
- Counties reporting
- 170
- in 27 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.
| 6:10 PM | Ralls County MO | 110 mph | Estimated |
| 3:48 PM | Litchfield County CT | 100 mph | Estimated |
| 4:10 PM | Lycoming County PA | 90 mph | Estimated |
| 3:08 PM | Orange County NY | 81 mph | Estimated |
| 3:57 PM | Fairfield County CT | 81 mph | Estimated |
| 5:25 AM | Scott County IA | 75 mph | Estimated |
| 5:26 AM | Rock Island County IL | 75 mph | Estimated |
| 5:30 AM | Rock Island County IL | 75 mph | Estimated |
| 8:33 PM | Butler County KS | 75 mph | Estimated |
| 7:31 PM | Salem County NJ | 72 mph | Measured |
| 5:22 AM | Scott County IA | 71 mph | Measured |
| 1:39 AM | Macomb County MI | 70 mph | Estimated |
| 5:05 AM | Crawford County OH | 70 mph | Estimated |
| 5:20 AM | Scott County IA | 70 mph | Estimated |
| 5:20 AM | Rock Island County IL | 70 mph | Estimated |
| 5:40 AM | Scott County IA | 70 mph | Estimated |
| 3:00 PM | Orange County NY | 70 mph | Estimated |
| 3:15 PM | Aroostook County ME | 70 mph | Estimated |
| 3:15 PM | Aroostook County ME | 70 mph | Estimated |
| 3:20 PM | York County ME | 70 mph | Estimated |
| 3:50 PM | Fairfield County CT | 70 mph | Estimated |
| 4:03 PM | Fairfield County CT | 70 mph | Estimated |
| 4:07 PM | Fairfield County CT | 70 mph | Estimated |
| 4:15 PM | New Haven County CT | 70 mph | Estimated |
| 4:15 PM | New Haven County CT | 70 mph | Estimated |
| 4:15 PM | Hampshire County WV | 70 mph | Estimated |
| 4:20 PM | New Haven County CT | 70 mph | Estimated |
| 4:22 PM | New Haven County CT | 70 mph | Estimated |
| 4:33 PM | New Haven County CT | 70 mph | Estimated |
| 4:35 PM | New Haven County CT | 70 mph | Estimated |
| 4:35 PM | New Haven County CT | 70 mph | Estimated |
| 4:35 PM | New Haven County CT | 70 mph | Estimated |
| 4:45 PM | New Haven County CT | 70 mph | Estimated |
| 4:50 PM | Fairfield County CT | 70 mph | Estimated |
| 4:50 PM | Fairfield County CT | 70 mph | Estimated |
| 4:55 PM | New Haven County CT | 70 mph | Estimated |
| 4:55 PM | New Haven County CT | 70 mph | Estimated |
| 4:55 PM | New Haven County CT | 70 mph | Estimated |
| 5:00 PM | Fairfield County CT | 70 mph | Estimated |
| 5:15 PM | Fairfield County CT | 70 mph | Estimated |
| 5:20 PM | Loudoun County VA | 70 mph | Estimated |
| 5:30 PM | Westchester County NY | 70 mph | Estimated |
| 6:10 PM | Marion County MO | 70 mph | Estimated |
| 7:05 PM | Sedgwick County KS | 70 mph | Estimated |
| 7:31 PM | Sedgwick County KS | 70 mph | Estimated |
| 7:35 PM | Sedgwick County KS | 70 mph | Estimated |
| 7:41 PM | Sedgwick County KS | 70 mph | Estimated |
| 7:43 PM | Sedgwick County KS | 70 mph | Estimated |
| 8:00 PM | Butler County KS | 70 mph | Estimated |
| 8:00 PM | Butler County KS | 70 mph | Estimated |
| 8:00 PM | Butler County KS | 70 mph | Estimated |
| 8:04 PM | Sedgwick County KS | 70 mph | Estimated |
| 8:27 PM | Butler County KS | 70 mph | Estimated |
| 8:28 PM | Butler County KS | 70 mph | Estimated |
| 8:44 PM | Butler County KS | 70 mph | Estimated |
| 8:52 PM | Butler County KS | 70 mph | Estimated |
| 8:58 PM | Sedgwick County KS | 70 mph | Estimated |
| 9:05 PM | Custer County OK | 70 mph | Estimated |
| 9:15 PM | Butler County KS | 70 mph | Estimated |
| 10:12 PM | Sumner County KS | 70 mph | Estimated |
| 2:30 AM | Weld County CO | 69 mph | Estimated |
| 8:00 AM | Cook County IL | 69 mph | Estimated |
| 12:05 PM | Clay County KY | 69 mph | Estimated |
| 8:30 PM | Weld County CO | 69 mph | Estimated |
| 9:20 PM | Lewis County WV | 67 mph | Measured |
| 4:12 PM | Greenville County SC | 67 mph | Estimated |
| 9:43 PM | Cumberland County NJ | 64 mph | Measured |
| 1:40 AM | Wayne County MI | 64 mph | Estimated |
| 5:26 AM | Rock Island County IL | 64 mph | Estimated |
| 6:00 AM | Henry County IL | 64 mph | Estimated |
| 3:39 PM | Pike County KY | 64 mph | Estimated |
| 4:15 PM | Hampshire County WV | 64 mph | Estimated |
| 5:00 PM | Piscataquis County ME | 64 mph | Estimated |
| 5:30 PM | Penobscot County ME | 64 mph | Estimated |
| 5:30 PM | Penobscot County ME | 64 mph | Estimated |
| 5:45 PM | Clay County IA | 64 mph | Estimated |
| 5:50 PM | Clay County IA | 64 mph | Estimated |
| 6:24 PM | Loudoun County VA | 64 mph | Estimated |
| 6:40 PM | Loudoun County VA | 64 mph | Estimated |
| 6:55 PM | McCracken County KY | 64 mph | Estimated |
| 7:28 PM | Anne Arundel County MD | 64 mph | Estimated |
| 7:35 PM | Sedgwick County KS | 64 mph | Estimated |
| 7:36 PM | Baltimore MD | 64 mph | Estimated |
| 7:45 PM | Woodward County OK | 64 mph | Estimated |
| 8:45 PM | Butler County KS | 64 mph | Estimated |
| 8:53 PM | Sedgwick County KS | 64 mph | Estimated |
| 10:15 PM | Culpeper County VA | 64 mph | Estimated |
| 10:15 PM | Albemarle County VA | 64 mph | Estimated |
| 10:33 PM | Mills County IA | 64 mph | Estimated |
| 10:45 PM | Orange County VA | 64 mph | Estimated |
| 10:55 PM | Queen Anne's County MD | 64 mph | Estimated |
| 5:25 AM | Rock Island County IL | 63 mph | Measured |
| 7:50 AM | DuPage County IL | 63 mph | Estimated |
| 8:00 AM | Cook County IL | 63 mph | Estimated |
| 1:35 PM | McDowell County NC | 63 mph | Estimated |
| 2:07 PM | Wayne County KY | 63 mph | Estimated |
| 2:12 PM | Catawba County NC | 63 mph | Estimated |
| 3:43 PM | Pike County KY | 63 mph | Estimated |
| 3:45 PM | Sullivan County TN | 63 mph | Estimated |
| 4:40 PM | Breathitt County KY | 63 mph | Estimated |
By state
| Connecticut | 42 | 61 mph |
| Pennsylvania | 36 | 58 mph |
| Kansas | 29 | 62 mph |
| Maine | 27 | — |
| New Hampshire | 25 | — |
| New York | 23 | — |
| North Carolina | 23 | — |
| Massachusetts | 23 | — |
| Virginia | 21 | — |
| Iowa | 17 | 71 mph |
| New Jersey | 16 | 72 mph |
| Illinois | 13 | 63 mph |
| Maryland | 13 | 62 mph |
| West Virginia | 12 | 67 mph |
| Kentucky | 10 | — |
| Vermont | 9 | 59 mph |
| South Carolina | 7 | — |
| Missouri | 6 | — |
| Oklahoma | 5 | — |
| Georgia | 5 | — |
| Michigan | 5 | 60 mph |
| Ohio | 3 | — |
| Rhode Island | 3 | — |
| Tennessee | 3 | — |
| Colorado | 2 | — |
| Nebraska | 1 | — |
| Delaware | 1 | — |
| Indiana | 0 | — |
| Alabama | 0 | — |
Counties with the most wind reports
- New Haven CountyCT · 16 reports
- Litchfield CountyCT · 14 reports
- Sedgwick CountyKS · 14 reports
- Butler CountyKS · 12 reports
- Grafton CountyNH · 12 reports
- Fairfield CountyCT · 10 reports
- Essex CountyMA · 9 reports
- Kennebec CountyME · 8 reports
- Rock Island CountyIL · 6 reports
- Scott CountyIA · 6 reports
Hail and tornadoes that day
427 hail reports, 23 of 2 inches or more; 3 tornadoes.
| 6:30 PM | Sedgwick County KS | 4.25 |
| 8:58 AM | Chariton County MO | 3.00 |
| 12:45 PM | Chenango County NY | 3.00 |
| 8:02 PM | Daviess County MO | 3.00 |
| 8:58 PM | Chariton County MO | 3.00 |
| 4:05 PM | Macon County MO | 2.75 |
| 6:00 PM | Grundy County MO | 2.75 |
| 8:05 PM | Daviess County MO | 2.75 |
| 9:30 PM | Linn County MO | 2.75 |
| 11:50 AM | Chenango County NY | 2.50 |
| 6:32 PM | Grundy County MO | 2.50 |
| 7:58 PM | Daviess County MO | 2.50 |
| 9:07 PM | Chariton County MO | 2.50 |
| 4:52 AM | Crawford County OH | 2.00 |
| 11:45 AM | Chenango County NY | 2.00 |
| 11:55 AM | Herkimer County NY | 2.00 |
| 12:00 PM | Cayuga County NY | 2.00 |
| 12:50 PM | Chenango County NY | 2.00 |
| 1:15 PM | Warren County NY | 2.00 |
| 2:33 PM | Sullivan County NH | 2.00 |
| 7:00 PM | Roger Mills County OK | 2.00 |
| 7:05 PM | Macon County MO | 2.00 |
| 7:05 PM | Alfalfa County OK | 2.00 |
| 11:05 PM | Queen Anne's County MD | 1.80 |
| 1:03 AM | Lancaster County NE | 1.75 |
| 1:35 AM | Lancaster County NE | 1.75 |
| 5:22 AM | Richland County OH | 1.75 |
| 5:49 AM | Ashland County OH | 1.75 |
| 7:07 AM | Lincoln County NE | 1.75 |
| 9:30 AM | Polk County IA | 1.75 |
| 9:32 AM | Polk County IA | 1.75 |
| 12:03 PM | Cortland County NY | 1.75 |
| 12:45 PM | Chenango County NY | 1.75 |
| 1:19 PM | Broome County NY | 1.75 |
| 1:50 PM | Washington County NY | 1.75 |
| 2:10 PM | Indiana County PA | 1.75 |
| 2:44 PM | Orange County NY | 1.75 |
| 3:07 PM | Dutchess County NY | 1.75 |
| 3:08 PM | Orange County NY | 1.75 |
| 3:13 PM | Litchfield County CT | 1.75 |
| 3:15 PM | Dutchess County NY | 1.75 |
| 3:15 PM | Dutchess County NY | 1.75 |
| 3:35 PM | Lackawanna County PA | 1.75 |
| 3:40 PM | Dutchess County NY | 1.75 |
| 3:42 PM | Dutchess County NY | 1.75 |
| 3:48 PM | Clay County NC | 1.75 |
| 3:50 PM | Dutchess County NY | 1.75 |
| 4:00 PM | Kennebec County ME | 1.75 |
| 4:05 PM | Dutchess County NY | 1.75 |
| 4:20 PM | Johnson County KY | 1.75 |
- EF0 tornado3:10 PM CDT
- EF1 tornado3:48 PM CDT
- EF0 tornado6:56 PM CDT
2011 · 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.