The severe wind outbreak of June 18, 2010
397 wind reportsIllinois, Iowa, Indiana and 12 more states
397 damaging wind reports across 15 states between 2:12 AM and 12:55 AM the next day CDT, 46 of them 65 knots (75 mph) or stronger; the strongest measured gust was 90 mph in LaPorte County, IN. 113 hail reports and 2 tornadoes the same day.
Watch the day unfoldSevere wind day · June 18, 2010
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
- 397
- 85th of 15,807 days with wind reports since 1955
- 75 mph or more
- 46
- 2 of 86 mph (75 knots) or more
- Strongest measured gust
- 90 mph
- 78 knots, LaPorte County, IN
- Measured
- 58
- reports with an instrument reading; the rest are estimates from damage
- Killed by wind
- 2
- 17 injured
- Counties reporting
- 148
- in 15 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.
| 6:20 PM | LaPorte County IN | 90 mph | Measured |
| 1:45 PM | Rock Island County IL | 86 mph | Estimated |
| 1:00 PM | Jones County IA | 81 mph | Estimated |
| 1:00 PM | Cedar County IA | 81 mph | Estimated |
| 1:45 PM | Rock Island County IL | 81 mph | Estimated |
| 2:00 PM | Henry County IL | 81 mph | Estimated |
| 3:26 PM | Rock County WI | 81 mph | Estimated |
| 5:46 PM | Berrien County MI | 81 mph | Estimated |
| 6:10 PM | Tippecanoe County IN | 81 mph | Estimated |
| 6:44 PM | Jones County IA | 81 mph | Estimated |
| 6:56 PM | Clinton County IA | 81 mph | Estimated |
| 5:43 PM | St. Joseph County IN | 79 mph | Measured |
| 6:36 PM | St. Joseph County MI | 79 mph | Measured |
| 3:45 PM | Kendall County IL | 76 mph | Measured |
| 4:10 PM | Waukesha County WI | 76 mph | Measured |
| 7:24 PM | Jackson County IA | 75 mph | Measured |
| 8:47 AM | Greene County IA | 75 mph | Estimated |
| 9:25 AM | Adair County IA | 75 mph | Estimated |
| 9:46 AM | Madison County IA | 75 mph | Estimated |
| 10:15 AM | Polk County IA | 75 mph | Estimated |
| 2:18 PM | Whiteside County IL | 75 mph | Estimated |
| 2:30 PM | Whiteside County IL | 75 mph | Estimated |
| 3:00 PM | Ogle County IL | 75 mph | Estimated |
| 3:00 PM | Winnebago County IL | 75 mph | Estimated |
| 3:05 PM | Rock County WI | 75 mph | Estimated |
| 3:20 PM | Rock County WI | 75 mph | Estimated |
| 3:59 PM | Lake County IL | 75 mph | Estimated |
| 4:00 PM | Lake County IL | 75 mph | Estimated |
| 4:04 PM | Cook County IL | 75 mph | Estimated |
| 4:04 PM | Cook County IL | 75 mph | Estimated |
| 4:06 PM | Cook County IL | 75 mph | Estimated |
| 4:07 PM | Cook County IL | 75 mph | Estimated |
| 4:10 PM | Cook County IL | 75 mph | Estimated |
| 4:10 PM | Cook County IL | 75 mph | Estimated |
| 4:11 PM | Kenosha County WI | 75 mph | Estimated |
| 4:15 PM | Kenosha County WI | 75 mph | Estimated |
| 4:20 PM | Waukesha County WI | 75 mph | Estimated |
| 5:20 PM | LaGrange County IN | 75 mph | Estimated |
| 5:56 PM | Marion County IA | 75 mph | Estimated |
| 6:10 PM | Kosciusko County IN | 75 mph | Estimated |
| 6:22 PM | LaPorte County IN | 75 mph | Estimated |
| 6:37 PM | Noble County IN | 75 mph | Estimated |
| 6:50 PM | St. Joseph County IN | 75 mph | Estimated |
| 7:10 PM | Keokuk County IA | 75 mph | Estimated |
| 7:40 PM | Whitley County IN | 75 mph | Estimated |
| 8:45 PM | Wayne County IA | 75 mph | Estimated |
| 5:36 PM | St. Joseph County IN | 74 mph | Measured |
| 2:58 PM | Winnebago County IL | 72 mph | Measured |
| 4:05 PM | Cook County IL | 72 mph | Measured |
| 3:55 PM | DuPage County IL | 71 mph | Measured |
| 4:22 PM | Cook County IL | 70 mph | Measured |
| 6:08 PM | Linn County IA | 70 mph | Measured |
| 9:15 AM | Cass County IA | 70 mph | Estimated |
| 9:54 AM | Madison County IA | 70 mph | Estimated |
| 9:59 AM | Polk County IA | 70 mph | Estimated |
| 12:25 PM | Johnson County IA | 70 mph | Estimated |
| 12:38 PM | Cedar County IA | 70 mph | Estimated |
| 12:43 PM | Cedar County IA | 70 mph | Estimated |
| 12:50 PM | Jones County IA | 70 mph | Estimated |
| 1:00 PM | Cedar County IA | 70 mph | Estimated |
| 1:41 PM | Jackson County IA | 70 mph | Estimated |
| 1:55 PM | Jo Daviess County IL | 70 mph | Estimated |
| 2:05 PM | Jo Daviess County IL | 70 mph | Estimated |
| 2:15 PM | Whiteside County IL | 70 mph | Estimated |
| 2:18 PM | Whiteside County IL | 70 mph | Estimated |
| 2:29 PM | Wright County IA | 70 mph | Estimated |
| 2:30 PM | Stephenson County IL | 70 mph | Estimated |
| 2:55 PM | Stephenson County IL | 70 mph | Estimated |
| 3:14 PM | DeKalb County IL | 70 mph | Estimated |
| 3:18 PM | LaSalle County IL | 70 mph | Estimated |
| 3:50 PM | DuPage County IL | 70 mph | Estimated |
| 4:15 PM | Cook County IL | 70 mph | Estimated |
| 5:42 PM | St. Joseph County IN | 70 mph | Estimated |
| 6:03 PM | Carroll County IN | 70 mph | Estimated |
| 6:11 PM | Marion County IA | 70 mph | Estimated |
| 6:30 PM | Marion County IA | 70 mph | Estimated |
| 6:47 PM | Branch County MI | 70 mph | Estimated |
| 6:57 PM | Pulaski County IN | 70 mph | Estimated |
| 7:04 PM | Clinton County IN | 70 mph | Estimated |
| 7:15 PM | Clinton County IA | 70 mph | Estimated |
| 7:25 PM | Decatur County IA | 70 mph | Estimated |
| 7:35 PM | Scott County IA | 70 mph | Estimated |
| 7:42 PM | Scott County IA | 70 mph | Estimated |
| 7:49 PM | Rock Island County IL | 70 mph | Estimated |
| 8:14 PM | Cedar County IA | 70 mph | Estimated |
| 8:25 PM | Keokuk County IA | 70 mph | Estimated |
| 8:35 PM | Warren County IL | 70 mph | Estimated |
| 9:02 PM | Oakland County MI | 70 mph | Estimated |
| 2:26 PM | Lee County IL | 69 mph | Estimated |
| 2:40 PM | Ogle County IL | 69 mph | Estimated |
| 3:05 PM | Winnebago County IL | 69 mph | Estimated |
| 3:30 PM | McHenry County IL | 69 mph | Estimated |
| 3:40 PM | Kane County IL | 69 mph | Estimated |
| 3:40 PM | McHenry County IL | 69 mph | Estimated |
| 3:40 PM | Kane County IL | 69 mph | Estimated |
| 3:55 PM | DuPage County IL | 69 mph | Estimated |
| 3:57 PM | Grundy County IL | 69 mph | Estimated |
| 3:58 PM | DuPage County IL | 69 mph | Estimated |
| 4:00 PM | Cook County IL | 69 mph | Estimated |
| 4:10 PM | Cook County IL | 69 mph | Estimated |
By state
Counties with the most wind reports
- Cook CountyIL · 26 reports
- DuPage CountyIL · 17 reports
- Whiteside CountyIL · 10 reports
- Cedar CountyIA · 9 reports
- Scott CountyIA · 9 reports
- St. Joseph CountyIN · 8 reports
- Oakland CountyMI · 8 reports
- Berrien CountyMI · 8 reports
- Jones CountyIA · 7 reports
- Lee CountyIL · 6 reports
Hail and tornadoes that day
113 hail reports, 7 of 2 inches or more; 2 tornadoes.
| 9:05 PM | Seward County KS | 4.00 |
| 8:45 PM | Seward County KS | 3.00 |
| 9:12 PM | Donley County TX | 2.75 |
| 7:35 PM | Morgan County CO | 2.50 |
| 8:17 PM | Armstrong County TX | 2.50 |
| 8:36 PM | Seward County KS | 2.00 |
| 9:20 PM | Haskell County KS | 2.00 |
| 12:14 PM | Ida County IA | 1.75 |
| 1:05 PM | Webster County IA | 1.75 |
| 5:31 PM | Hutchinson County TX | 1.75 |
| 5:48 PM | Warren County IA | 1.75 |
| 6:53 PM | Hutchinson County TX | 1.75 |
| 8:00 PM | Carson County TX | 1.75 |
| 8:12 PM | Carson County TX | 1.75 |
| 12:56 AM | Morgan County CO | 1.75 |
| 1:06 PM | Webster County IA | 1.50 |
| 4:35 PM | Iron County MO | 1.50 |
| 6:23 PM | Hutchinson County TX | 1.50 |
| 2:55 PM | Franklin County IA | 1.25 |
| 4:28 PM | Hardin County IA | 1.25 |
| 7:15 PM | Jackson County MI | 1.25 |
| 7:50 AM | Douglas County NE | 1.00 |
| 9:10 AM | Cass County IA | 1.00 |
| 9:45 AM | Floyd County IA | 1.00 |
| 11:06 AM | Woodbury County IA | 1.00 |
| 11:15 AM | Ida County IA | 1.00 |
| 11:39 AM | Benton County IA | 1.00 |
| 11:44 AM | Ida County IA | 1.00 |
| 11:50 AM | Sac County IA | 1.00 |
| 12:30 PM | Buena Vista County IA | 1.00 |
| 12:38 PM | Buena Vista County IA | 1.00 |
| 12:47 PM | Buena Vista County IA | 1.00 |
| 12:53 PM | Webster County IA | 1.00 |
| 12:57 PM | Webster County IA | 1.00 |
| 1:01 PM | Webster County IA | 1.00 |
| 1:12 PM | Webster County IA | 1.00 |
| 1:54 PM | Humboldt County IA | 1.00 |
| 3:24 PM | Kane County IL | 1.00 |
| 4:50 PM | Hardin County IA | 1.00 |
| 4:50 PM | Lake County IN | 1.00 |
| 4:58 PM | Black Hawk County IA | 1.00 |
| 5:01 PM | Grundy County IA | 1.00 |
| 5:17 PM | Jefferson County MO | 1.00 |
| 5:18 PM | Warren County IA | 1.00 |
| 5:27 PM | Hutchinson County TX | 1.00 |
| 5:43 PM | Jefferson County MO | 1.00 |
| 5:44 PM | Warren County IA | 1.00 |
| 5:52 PM | Warren County IA | 1.00 |
| 6:00 PM | Monroe County IL | 1.00 |
| 6:08 PM | LaPorte County IN | 1.00 |
- EF0 tornado3:54 PM CDT
- EF0 tornado4:55 PM CDT
2010 · 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.