Alert archive / Iowa / Severe Thunderstorm Watches in 2007
Severe Thunderstorm Watch 64
The Storm Prediction Center issued this severe thunderstorm watch at Mar 21, 2007, 5:15 PM CDT for 4 states. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 21, 2007, 5:15 PM CDT (22:15 UTC)
- Expired
- Mar 22, 2007, 12:00 AM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 71 counties
Adair County, IA, Adams County, IA, Audubon County, IA, Boone County, IA, Buena Vista County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Cerro Gordo County, IA, Cherokee County, IA, Crawford County, IA, Dallas County, IA, Emmet County, IA, Franklin County, IA, Fremont County, IA, Greene County, IA, Guthrie County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Harrison County, IA, Humboldt County, IA, Ida County, IA, Kossuth County, IA, Madison County, IA, Mills County, IA, Monona County, IA, Montgomery County, IA, Page County, IA, Palo Alto County, IA, Pocahontas County, IA, Pottawattamie County, IA, Sac County, IA, Shelby County, IA, Story County, IA, Taylor County, IA, Webster County, IA, Winnebago County, IA, Worth County, IA, Wright County, IA, Brown County, KS, Clay County, KS, Cloud County, KS, Jackson County, KS, Marshall County, KS, Nemaha County, KS, Ottawa County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Washington County, KS, Atchison County, MO, Holt County, MO, Nodaway County, MO, Burt County, NE, Cass County, NE, Dodge County, NE, Douglas County, NE, Gage County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Washington County, NE
The radar
The Omaha radar (KOAX), 93 km from the middle of the area, began a volume at 22:15 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
- 20%
- One or more EF2 to EF5 tornadoes
- 5%
- 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
- 20%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
45 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 21, 5:16 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 44 min |
| Mar 21, 5:30 PM CDT | Severe Thunderstorm Warning | OAX | Dodge, Washington | 45 min |
| Mar 21, 5:46 PM CDT | Severe Thunderstorm Warning | OAX | Douglas, Saunders | 44 min |
| Mar 21, 5:58 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 32 min |
| Mar 21, 6:00 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 60 min |
| Mar 21, 6:09 PM CDT | Severe Thunderstorm Warning | OAX | Lancaster, Seward | 51 min |
| Mar 21, 6:11 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 49 min |
| Mar 21, 6:17 PM CDT | Severe Thunderstorm Warning | OAX | Washington | 28 min |
| Mar 21, 6:21 PM CDT | Severe Thunderstorm Warning | OAX | Saline | 39 min |
| Mar 21, 6:27 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Kossuth | 63 min |
| Mar 21, 6:30 PM CDT | Severe Thunderstorm Warning | OAX | Sarpy, Saunders | 45 min |
| Mar 21, 6:31 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista | 29 min |
| Mar 21, 6:47 PM CDT | Severe Thunderstorm Warning | DMX | Palo Alto | 27 min |
| Mar 21, 6:56 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista | 19 min |
| Mar 21, 7:00 PM CDT | Severe Thunderstorm Warning | OAX | Cass, Lancaster | 45 min |
| Mar 21, 7:04 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 56 min |
| Mar 21, 7:17 PM CDT | Severe Thunderstorm Warning | OAX | Sarpy | 43 min |
| Mar 21, 7:21 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Pocahontas | 39 min |
| Mar 21, 7:28 PM CDT | Severe Thunderstorm Warning | DMX | Winnebago | 47 min |
| Mar 21, 7:40 PM CDT | Severe Thunderstorm Warning | OAX | Cass | 50 min |
| Mar 21, 7:44 PM CDT | Severe Thunderstorm Warning | OAX | Lancaster | 31 min |
| Mar 21, 7:51 PM CDT | Severe Thunderstorm Warning | OAX | Jefferson | 39 min |
| Mar 21, 7:55 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 35 min |
| Mar 21, 7:56 PM CDT | Severe Thunderstorm Warning | TOP | Republic, Washington | 49 min |
| Mar 21, 7:57 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Pocahontas, Webster | 63 min |
| Mar 21, 7:59 PM CDT | Severe Thunderstorm Warning | FSD | Ida | 16 min |
| Mar 21, 8:03 PM CDT | Severe Thunderstorm Warning | DMX | Worth | 44 min |
| Mar 21, 8:04 PM CDT | Severe Thunderstorm Warning | DMX | Sac | 41 min |
| Mar 21, 8:05 PM CDT | Severe Thunderstorm Warning | OAX | Mills | 40 min |
| Mar 21, 8:17 PM CDT | Severe Thunderstorm Warning | OAX | Johnson, Otoe | 43 min |
| Mar 21, 8:22 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista | 23 min |
| Mar 21, 8:25 PM CDT | Severe Thunderstorm Warning | OAX | Gage | 50 min |
| Mar 21, 8:27 PM CDT | Severe Thunderstorm Warning | OAX | Cass | 33 min |
| Mar 21, 8:39 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 66 min |
| Mar 21, 8:40 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista | 20 min |
| Mar 21, 8:44 PM CDT | Severe Thunderstorm Warning | OAX | Mills | 15 min |
| Mar 21, 8:51 PM CDT | Severe Thunderstorm Warning | DMX | Pocahontas | 39 min |
| Mar 21, 8:53 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery | 52 min |
| Mar 21, 8:58 PM CDT | Severe Thunderstorm Warning | OAX | Johnson | 32 min |
| Mar 21, 9:24 PM CDT | Severe Thunderstorm Warning | OAX | Pawnee | 36 min |
| Mar 21, 9:28 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 26 min |
| Mar 21, 9:37 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 18 min |
| Mar 21, 9:44 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Taylor | 46 min |
| Mar 21, 9:50 PM CDT | Severe Thunderstorm Warning | OAX | Nemaha | 40 min |
| Mar 21, 9:58 PM CDT | Severe Thunderstorm Warning | OAX | Richardson | 62 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 |
|---|---|---|---|---|
| Mar 21, 6:37 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Boone, Butler and 36 more | 113 min |
| Mar 21, 9:44 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Clarke, Dallas, Davis and 24 more | 2 hr |
| Mar 21, 10:24 AM CDT | Severe Thunderstorm Watch | SPC | Appanoose, Benton, Black Hawk, Buchanan, Cedar, Clarke and 31 more | 5 hr |
| Mar 21, 12:30 PM CDT | Mesoscale Discussion | SPC | Clinton, Scott | 90 min |
| Mar 21, 12:58 PM CDT | Mesoscale Discussion | SPC | Appanoose, Davis, Lee, Van Buren | 62 min |
| Mar 21, 1:26 PM CDT | Mesoscale Discussion | SPC | Clinton, Jackson, Scott | 64 min |
| Mar 21, 4:57 PM CDT | Mesoscale Discussion | SPC | Crawford, Fremont, Harrison, Ida, Mills, Monona and 3 more | 63 min |
Nearby
Severe Thunderstorm Watches in Iowa, 2007Severe Thunderstorm Watches in Nebraska, 2007Severe Thunderstorm Watches in Kansas, 2007Every severe thunderstorm watch in 2007
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.