Alert archive / Iowa / Severe Thunderstorm Watches in 1999
Severe Thunderstorm Watch 596
The Storm Prediction Center issued this severe thunderstorm watch at Jul 27, 1999, 10:45 PM CDT for Mercer County, Rock Island County, Illinois; 38 counties in Iowa; Crawford County, Wisconsin. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 27, 1999, 10:45 PM CDT (03:45 UTC)
- Expired
- Jul 28, 1999, 4:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 41 counties
Allamakee County, IA, Benton County, IA, Black Hawk County, IA, Bremer County, IA, Buchanan County, IA, Butler County, IA, Cedar County, IA, Cerro Gordo County, IA, Chickasaw County, IA, Clayton County, IA, Clinton County, IA, Delaware County, IA, Dubuque County, IA, Fayette County, IA, Floyd County, IA, Franklin County, IA, Grundy County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Iowa County, IA, Jackson County, IA, Jasper County, IA, Johnson County, IA, Jones County, IA, Keokuk County, IA, Linn County, IA, Louisa County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Muscatine County, IA, Poweshiek County, IA, Scott County, IA, Story County, IA, Tama County, IA, Washington County, IA, Wright County, IA, Mercer County, IL, Rock Island County, IL, Crawford County, WI
The radar
The Quad Cities radar (KDVN), 139 km from the middle of the area, began a volume at 03:44 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.
Warnings issued inside it
4 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 11:22 PM CDT | Severe Thunderstorm Warning | DVN | Louisa, Muscatine | 48 min |
| Jul 27, 11:40 PM CDT | Severe Thunderstorm Warning | ARX | Floyd | 60 min |
| Jul 27, 11:55 PM CDT | Severe Thunderstorm Warning | DVN | Mercer, Rock Island | 45 min |
| Jul 27, 11:55 PM CDT | Severe Thunderstorm Warning | DVN | Scott | 45 min |
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 9:15 PM CDT | Severe Thunderstorm Watch | SPC | Buffalo | 3 hr |
Nearby
Severe Thunderstorm Watches in Iowa, 1999Severe Thunderstorm Watches in Illinois, 1999Severe Thunderstorm Watches in Wisconsin, 1999Every severe thunderstorm watch in 1999
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.