Alert archive / Iowa / Tornado Watches in 2010
Tornado Watch 389
The Storm Prediction Center issued this tornado watch at Jun 22, 2010, 10:49 PM CDT for 14 counties in Iowa. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 22, 2010, 10:49 PM CDT (03:49 UTC)
- Expired
- Jun 23, 2010, 6:00 AM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 60 kt
Counties Butler County, IA, Calhoun County, IA, Cerro Gordo County, IA, Franklin County, IA, Grundy County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Humboldt County, IA, Kossuth County, IA, Palo Alto County, IA, Pocahontas County, IA, Webster County, IA, Wright County, IA
The radar
The Des Moines radar (KDMX), 130 km from the middle of the area, began a volume at 03:50 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 60%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
14 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 10:55 PM CDT | Severe Thunderstorm Warning | DMX | Franklin, Hamilton, Wright | 50 min |
| Jun 22, 10:57 PM CDT | Tornado Warning | DMX | Franklin, Hamilton, Wright | 48 min |
| Jun 22, 11:00 PM CDT | Tornado Warning | DMX | Hamilton, Humboldt, Webster, Wright | 45 min |
| Jun 22, 11:30 PM CDT | Severe Thunderstorm Warning | DMX | Franklin, Wright | 60 min |
| Jun 22, 11:44 PM CDT | Flash Flood Warning | DMX | Humboldt, Webster, Wright | 6 hr |
| Jun 22, 11:45 PM CDT | Tornado Warning | DMX | Franklin, Hamilton, Hardin, Wright | 45 min |
| Jun 22, 11:46 PM CDT | Tornado Warning | DMX | Hamilton, Wright | 13 min |
| Jun 23, 12:24 AM CDT | Severe Thunderstorm Warning | DMX | Emmet, Palo Alto | 51 min |
| Jun 23, 12:28 AM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin, Grundy, Hardin | 62 min |
| Jun 23, 12:57 AM CDT | Flash Flood Warning | DMX | Franklin | 6 hr |
| Jun 23, 1:03 AM CDT | Flash Flood Warning | DMX | Hancock, Kossuth, Palo Alto | 4 hr |
| Jun 23, 1:32 AM CDT | Flash Flood Warning | DMX | Butler, Cerro Gordo, Franklin | 4 hr |
| Jun 23, 1:32 AM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer, Butler, Franklin | 58 min |
| Jun 23, 2:13 AM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Butler, Grundy | 32 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 7:08 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Benton, Black Hawk, Boone and 66 more | 2 hr |
| Jun 22, 7:56 PM CDT | Severe Thunderstorm Watch | SPC | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 8 hr |
| Jun 22, 9:00 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 49 more | 9 hr |
| Jun 22, 9:59 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Calhoun, Carroll, Cherokee, Clay, Crawford and 20 more | 91 min |
| Jun 22, 11:47 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Allamakee, Audubon, Benton, Black Hawk and 78 more | 88 min |
| Jun 23, 12:01 AM CDT | Severe Thunderstorm Watch | SPC | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 3 hr |
| Jun 23, 12:40 AM CDT | Mesoscale Discussion | SPC | Butler, Cerro Gordo, Chickasaw, Clay, Dickinson, Emmet and 15 more | 95 min |
| Jun 23, 1:29 AM CDT | Tornado Watch | SPC | Allamakee, Benton, Buchanan, Clayton, Delaware, Dubuque and 5 more | 7 hr |
| Jun 23, 2:36 AM CDT | Severe Thunderstorm Watch | SPC | Howard, Mitchell | 5 hr |
| Jun 23, 3:38 AM CDT | Severe Thunderstorm Watch | SPC | Cedar, Clinton, Iowa, Johnson, Keokuk, Louisa and 3 more | 6 hr |
| Jun 23, 5:46 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 28 more | 59 min |
| Jun 23, 1:01 PM CDT | Mesoscale Discussion | SPC | Cedar, Clinton, Des Moines, Henry, Johnson, Louisa and 3 more | 59 min |
| Jun 23, 2:10 PM CDT | Tornado Watch | SPC | Appanoose, Cedar, Clinton, Davis, Decatur, Des Moines and 19 more | 7 hr |
| Jun 23, 2:48 PM CDT | Mesoscale Discussion | SPC | Allamakee, Winneshiek | 87 min |
Nearby
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.