Alert archive / Iowa / Severe Thunderstorm Watches in 2014
Severe Thunderstorm Watch 338
The Storm Prediction Center issued this severe thunderstorm watch at Jun 20, 2014, 5:44 PM CDT for 22 counties in Iowa. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 20, 2014, 5:44 PM CDT (22:44 UTC)
- Expired
- Jun 20, 2014, 11:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 22 counties
Audubon County, IA, Boone County, IA, Calhoun County, IA, Carroll County, IA, Crawford County, IA, Dallas County, IA, Emmet County, IA, Greene County, IA, Guthrie County, IA, Hamilton County, IA, Hancock County, IA, Harrison County, IA, Humboldt County, IA, Kossuth County, IA, Palo Alto County, IA, Pocahontas County, IA, Pottawattamie County, IA, Sac County, IA, Shelby County, IA, Webster County, IA, Winnebago County, IA, Wright County, IA
The radar
The Des Moines radar (KDMX), 112 km from the middle of the area, began a volume at 22:45 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
- 5%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 6:14 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 46 min |
| Jun 20, 7:11 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 34 min |
| Jun 20, 7:28 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 32 min |
| Jun 20, 7:43 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Shelby | 47 min |
| Jun 20, 8:03 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie, Shelby | 42 min |
| Jun 20, 8:10 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 35 min |
| Jun 20, 8:38 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Montgomery, Pottawattamie, Shelby | 52 min |
| Jun 20, 8:43 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 47 min |
| Jun 20, 9:41 PM CDT | Flash Flood Warning | OAX | Pottawattamie | 6 hr |
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 20, 2:20 PM CDT | Severe Thunderstorm Watch | SPC | Buena Vista, Cherokee, Clay, Ida, Monona, O'Brien and 3 more | 9 hr |
| Jun 20, 5:40 PM CDT | Mesoscale Discussion | SPC | Audubon, Buena Vista, Calhoun, Carroll, Cass, Cherokee and 16 more | 95 min |
Nearby
Severe Thunderstorm Watches in Iowa, 2014Every severe thunderstorm watch in 2014
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.