Alert archive / Minnesota / Severe Thunderstorm Watches in 1998
Severe Thunderstorm Watch 752
The Storm Prediction Center issued this severe thunderstorm watch at Jul 18, 1998, 10:30 PM CDT for 20 counties in Iowa; 28 counties in Minnesota; 8 counties in Wisconsin. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 18, 1998, 10:30 PM CDT (03:30 UTC)
- Expired
- Jul 19, 1998, 4:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 56 counties
Bremer County, IA, Buena Vista County, IA, Butler County, IA, Cerro Gordo County, IA, Chickasaw County, IA, Emmet County, IA, Fayette County, IA, Floyd County, IA, Franklin County, IA, Hancock County, IA, Howard County, IA, Humboldt County, IA, Kossuth County, IA, Mitchell County, IA, Palo Alto County, IA, Pocahontas County, IA, Winnebago County, IA, Winneshiek County, IA, Worth County, IA, Wright County, IA, Anoka County, MN, Blue Earth County, MN, Carver County, MN, Dakota County, MN, Dodge County, MN, Faribault County, MN, Fillmore County, MN, Freeborn County, MN, Goodhue County, MN, Hennepin County, MN, Houston County, MN, Le Sueur County, MN, Martin County, MN, McLeod County, MN, Mower County, MN, Nicollet County, MN, Olmsted County, MN, Ramsey County, MN, Rice County, MN, Scott County, MN, Sibley County, MN, Steele County, MN, Wabasha County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Winona County, MN, Wright County, MN, Buffalo County, WI, Chippewa County, WI, Dunn County, WI, Eau Claire County, WI, Pepin County, WI, Pierce County, WI, Saint Croix County, WI, Trempealeau County, WI
The radar
The Minneapolis radar (KMPX), 123 km from the middle of the area, began a volume at 03:29 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
10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 10:52 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Palo Alto | 33 min |
| Jul 18, 11:07 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth, Pocahontas | 33 min |
| Jul 18, 11:09 PM CDT | Severe Thunderstorm Warning | MPX | Faribault | 46 min |
| Jul 18, 11:23 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Palo Alto | 17 min |
| Jul 18, 11:25 PM CDT | Severe Thunderstorm Warning | MPX | Le Sueur, Rice, Waseca | 50 min |
| Jul 18, 11:34 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Kossuth, Pocahontas | 31 min |
| Jul 18, 11:38 PM CDT | Severe Thunderstorm Warning | ARX | Dodge, Mower | 52 min |
| Jul 19, 12:07 AM CDT | Severe Thunderstorm Warning | ARX | Olmsted | 53 min |
| Jul 19, 12:27 AM CDT | Severe Thunderstorm Warning | ARX | Wabasha | 63 min |
| Jul 19, 12:28 AM CDT | Severe Thunderstorm Warning | ARX | Fillmore | 62 min |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 3.5 hours before the alert went out and 124 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 16 J/kg
- Mixed-layer CIN
- -548 J/kg
- Mixed-layer LCL
- 2130 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- -72 m²/s²
- 0-3 km storm-relative helicity
- 450 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 18, 8:45 PM CDT | Tornado Watch | SPC | Clay, Dickinson, Lyon, O'Brien, Osceola, Sioux | 6 hr |
| Jul 19, 1:30 AM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Benton, Buchanan, Cedar, Clayton, Clinton and 10 more | 6 hr |
| Jul 19, 4:15 AM CDT | Severe Thunderstorm Watch | SPC | Kenosha, Milwaukee, Racine, Walworth, Waukesha | 4 hr |
Nearby
Severe Thunderstorm Watches in Minnesota, 1998Severe Thunderstorm Watches in Iowa, 1998Severe Thunderstorm Watches in Wisconsin, 1998Every severe thunderstorm watch in 1998
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.