Alert archive / Illinois / Severe Thunderstorm Watches in 2013
Severe Thunderstorm Watch 334
The Storm Prediction Center issued this severe thunderstorm watch at Jun 21, 2013, 8:38 AM CDT for 19 counties in Illinois; 16 counties in Iowa. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 21, 2013, 8:38 AM CDT (13:38 UTC)
- Expired
- Jun 21, 2013, 1:00 PM CDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 35 counties
Benton County, IA, Buchanan County, IA, Cedar County, IA, Clinton County, IA, Delaware County, IA, Dubuque County, IA, Iowa County, IA, Jackson County, IA, Johnson County, IA, Jones County, IA, Keokuk County, IA, Linn County, IA, Louisa County, IA, Muscatine County, IA, Scott County, IA, Washington County, IA, Boone County, IL, Bureau County, IL, Carroll County, IL, DeKalb County, IL, Grundy County, IL, Henry County, IL, Jo Daviess County, IL, Kane County, IL, Kendall County, IL, LaSalle County, IL, Lee County, IL, McHenry County, IL, Mercer County, IL, Ogle County, IL, Putnam County, IL, Rock Island County, IL, Stephenson County, IL, Whiteside County, IL, Winnebago County, IL
The radar
The Quad Cities radar (KDVN), 31 km from the middle of the area, began a volume at 13:40 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
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 20%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 50%
Warnings issued inside it
10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 8:41 AM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Delaware | 49 min |
| Jun 21, 8:49 AM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 41 min |
| Jun 21, 8:54 AM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Delaware, Jones, Linn | 66 min |
| Jun 21, 9:04 AM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Linn | 56 min |
| Jun 21, 9:42 AM CDT | Severe Thunderstorm Warning | DVN | Benton, Cedar, Delaware, Dubuque, Jackson, Johnson and 2 more | 63 min |
| Jun 21, 10:08 AM CDT | Severe Thunderstorm Warning | LOT | Boone, DeKalb, Ogle, Winnebago | 67 min |
| Jun 21, 10:33 AM CDT | Severe Thunderstorm Warning | LOT | DeKalb, Lee, Ogle | 57 min |
| Jun 21, 10:50 AM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Johnson, Jones | 55 min |
| Jun 21, 11:16 AM CDT | Severe Thunderstorm Warning | LOT | DeKalb, LaSalle, Lee | 59 min |
| Jun 21, 11:34 AM CDT | Severe Thunderstorm Warning | DVN | Bureau | 41 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 21, 8:07 AM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, DeKalb, DuPage, Grundy and 15 more | 53 min |
| Jun 21, 10:12 AM CDT | Mesoscale Discussion | SPC | Boone, Bureau, DeKalb, DuPage, Grundy, Henry and 12 more | 2 hr |
| Jun 21, 5:15 PM CDT | Mesoscale Discussion | SPC | Bond, Christian, Clark, Clay, Coles, Crawford and 16 more | 60 min |
| Jun 21, 5:23 AM CDT | Mesoscale Discussion | SPC | Allamakee, Bremer, Cerro Gordo, Chickasaw, Clayton, Fayette and 6 more | 37 min |
| Jun 21, 5:40 AM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 4 hr |
| Jun 21, 1:58 PM CDT | Tornado Watch | SPC | Clay, Dickinson, Lyon, O'Brien, Osceola, Sioux | 7 hr |
Nearby
Severe Thunderstorm Watches in Illinois, 2013Severe Thunderstorm Watches in Iowa, 2013Every severe thunderstorm watch in 2013
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.