Alert archive / Minnesota / Severe Thunderstorm Watches in 2002
Severe Thunderstorm Watch 108
The Storm Prediction Center issued this severe thunderstorm watch at Apr 18, 2002, 1:00 AM CDT for 35 counties in Iowa; 56 counties in Minnesota; 16 counties in Wisconsin. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 18, 2002, 1:00 AM CDT (06:00 UTC)
- Expired
- Apr 18, 2002, 7:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 107 counties
Allamakee County, IA, Black Hawk County, IA, Bremer County, IA, Buchanan County, IA, Buena Vista County, IA, Butler County, IA, Cerro Gordo County, IA, Cherokee County, IA, Chickasaw County, IA, Clay County, IA, Clayton County, IA, Delaware County, IA, Dickinson County, IA, Dubuque County, IA, Emmet County, IA, Fayette County, IA, Floyd County, IA, Franklin County, IA, Grundy County, IA, Hancock County, IA, Howard County, IA, Humboldt County, IA, Kossuth County, IA, Lyon County, IA, Mitchell County, IA, O'Brien County, IA, Osceola County, IA, Palo Alto County, IA, Plymouth County, IA, Pocahontas County, IA, Sioux County, IA, Winnebago County, IA, Winneshiek County, IA, Worth County, IA, Wright County, IA, Anoka County, MN, Benton County, MN, Big Stone County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Chippewa County, MN, Chisago County, MN, Cottonwood County, MN, Dakota County, MN, Dodge County, MN, Douglas County, MN, Faribault County, MN, Fillmore County, MN, Freeborn County, MN, Goodhue County, MN, Grant County, MN, Hennepin County, MN, Houston County, MN, Isanti County, MN, Jackson County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Le Sueur County, MN, Lincoln County, MN, Lyon County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Mower County, MN, Murray County, MN, Nicollet County, MN, Nobles County, MN, Olmsted County, MN, Pipestone County, MN, Pope County, MN, Ramsey County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Rock County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Steele County, MN, Stevens County, MN, Swift County, MN, Traverse County, MN, Wabasha County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Winona County, MN, Wright County, MN, Yellow Medicine County, MN, Barron County, WI, Buffalo County, WI, Chippewa County, WI, Crawford County, WI, Dunn County, WI, Eau Claire County, WI, Grant County, WI, Jackson County, WI, La Crosse County, WI, Pepin County, WI, Pierce County, WI, Polk County, WI, Rusk County, WI, Saint Croix County, WI, Trempealeau County, WI, Vernon County, WI
The radar
The Minneapolis radar (KMPX), 63 km from the middle of the area, began a volume at 06:09 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
54 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 18, 1:12 AM CDT | Severe Thunderstorm Warning | MPX | Yellow Medicine | 18 min |
| Apr 18, 1:20 AM CDT | Severe Thunderstorm Warning | MPX | Stearns | 25 min |
| Apr 18, 1:25 AM CDT | Severe Thunderstorm Warning | MPX | Carver, Hennepin | 35 min |
| Apr 18, 1:29 AM CDT | Severe Thunderstorm Warning | MPX | McLeod, Renville, Sibley | 31 min |
| Apr 18, 1:30 AM CDT | Severe Thunderstorm Warning | ARX | Fayette | 30 min |
| Apr 18, 1:34 AM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin | 56 min |
| Apr 18, 1:34 AM CDT | Severe Thunderstorm Warning | MPX | Wright | 26 min |
| Apr 18, 1:38 AM CDT | Severe Thunderstorm Warning | MPX | Nicollet | 22 min |
| Apr 18, 1:47 AM CDT | Severe Thunderstorm Warning | ARX | Winneshiek | 58 min |
| Apr 18, 1:47 AM CDT | Severe Thunderstorm Warning | MPX | Sherburne | 28 min |
| Apr 18, 1:51 AM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi, Renville | 39 min |
| Apr 18, 1:52 AM CDT | Severe Thunderstorm Warning | FGF | Grant | 38 min |
| Apr 18, 2:00 AM CDT | Severe Thunderstorm Warning | MPX | Wright | 30 min |
| Apr 18, 2:01 AM CDT | Severe Thunderstorm Warning | MPX | Isanti | 29 min |
| Apr 18, 2:03 AM CDT | Severe Thunderstorm Warning | MPX | Nicollet, Sibley | 27 min |
| Apr 18, 2:05 AM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Le Sueur | 25 min |
| Apr 18, 2:08 AM CDT | Severe Thunderstorm Warning | MPX | Faribault, Freeborn, Waseca | 37 min |
| Apr 18, 2:13 AM CDT | Severe Thunderstorm Warning | MPX | Carver, Scott | 32 min |
| Apr 18, 2:17 AM CDT | Severe Thunderstorm Warning | MPX | Meeker | 28 min |
| Apr 18, 2:19 AM CDT | Severe Thunderstorm Warning | DMX | Bremer | 41 min |
| Apr 18, 2:21 AM CDT | Severe Thunderstorm Warning | MPX | Douglas | 39 min |
| Apr 18, 2:22 AM CDT | Severe Thunderstorm Warning | ARX | Fayette | 38 min |
| Apr 18, 2:26 AM CDT | Severe Thunderstorm Warning | ARX | Vernon | 64 min |
| Apr 18, 2:28 AM CDT | Severe Thunderstorm Warning | MPX | Hennepin | 32 min |
| Apr 18, 2:32 AM CDT | Severe Thunderstorm Warning | MPX | Le Sueur | 13 min |
| Apr 18, 2:37 AM CDT | Severe Thunderstorm Warning | MPX | McLeod, Renville | 23 min |
| Apr 18, 2:42 AM CDT | Severe Thunderstorm Warning | MPX | Carver, Scott | 33 min |
| Apr 18, 2:48 AM CDT | Severe Thunderstorm Warning | ARX | Chickasaw | 42 min |
| Apr 18, 2:48 AM CDT | Severe Thunderstorm Warning | MPX | Meeker, Wright | 27 min |
| Apr 18, 2:50 AM CDT | Severe Thunderstorm Warning | ARX | Allamakee | 55 min |
| Apr 18, 2:58 AM CDT | Severe Thunderstorm Warning | ARX | Fayette | 47 min |
| Apr 18, 2:58 AM CDT | Severe Thunderstorm Warning | MPX | Isanti, Kanabec, Mille Lacs, Sherburne | 47 min |
| Apr 18, 3:01 AM CDT | Severe Thunderstorm Warning | MPX | Anoka, Hennepin, Ramsey | 44 min |
| Apr 18, 3:04 AM CDT | Severe Thunderstorm Warning | MPX | Douglas, Todd | 41 min |
| Apr 18, 3:07 AM CDT | Severe Thunderstorm Warning | MPX | McLeod | 23 min |
| Apr 18, 3:13 AM CDT | Severe Thunderstorm Warning | MPX | Carver | 47 min |
| Apr 18, 3:17 AM CDT | Severe Thunderstorm Warning | MPX | Dakota, Washington | 43 min |
| Apr 18, 3:19 AM CDT | Severe Thunderstorm Warning | MPX | Wright | 26 min |
| Apr 18, 3:29 AM CDT | Severe Thunderstorm Warning | ARX | Howard | 46 min |
| Apr 18, 3:31 AM CDT | Severe Thunderstorm Warning | MPX | McLeod | 14 min |
| Apr 18, 3:40 AM CDT | Severe Thunderstorm Warning | MPX | Anoka, Hennepin, Wright | 50 min |
| Apr 18, 3:49 AM CDT | Severe Thunderstorm Warning | ARX | Winneshiek | 56 min |
| Apr 18, 3:49 AM CDT | Severe Thunderstorm Warning | MPX | Chisago, Isanti | 41 min |
| Apr 18, 3:52 AM CDT | Severe Thunderstorm Warning | MPX | Pierce, Saint Croix | 53 min |
| Apr 18, 3:56 AM CDT | Severe Thunderstorm Warning | ARX | Olmsted | 34 min |
| Apr 18, 3:58 AM CDT | Severe Thunderstorm Warning | MPX | Dakota, Washington | 32 min |
| Apr 18, 4:01 AM CDT | Severe Thunderstorm Warning | ARX | Allamakee | 44 min |
| Apr 18, 4:04 AM CDT | Severe Thunderstorm Warning | MPX | Ramsey | 26 min |
| Apr 18, 4:14 AM CDT | Severe Thunderstorm Warning | ARX | Crawford | 61 min |
| Apr 18, 4:30 AM CDT | Severe Thunderstorm Warning | MPX | Washington | 30 min |
| Apr 18, 4:49 AM CDT | Severe Thunderstorm Warning | MPX | Barron, Dunn | 41 min |
| Apr 18, 5:24 AM CDT | Tornado Warning | MPX | Dunn | 21 min |
| Apr 18, 5:36 AM CDT | Severe Thunderstorm Warning | MPX | Barron | 24 min |
| Apr 18, 5:42 AM CDT | Severe Thunderstorm Warning | MPX | Chippewa | 33 min |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 6.0 hours before the alert went out and 61 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2104 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 146 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 18, 3:00 PM CDT | Tornado Watch | SPC | Cedar, Clinton, Delaware, Dubuque, Jackson, Jones and 3 more | 5 hr |
| Apr 18, 4:15 PM CDT | Tornado Watch | SPC | Adair, Adams, Allamakee, Audubon, Black Hawk, Boone and 38 more | 5 hr |
| Apr 18, 2:30 PM CDT | Tornado Watch | SPC | Adams, Calumet, Chippewa, Clark, Columbia, Crawford and 41 more | 6 hr |
| Apr 18, 5:00 PM CDT | Tornado Watch | SPC | Florence, Forest, Oneida, Vilas | 5 hr |
Nearby
Severe Thunderstorm Watches in Minnesota, 2002Severe Thunderstorm Watches in Iowa, 2002Severe Thunderstorm Watches in Wisconsin, 2002Every severe thunderstorm watch in 2002
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.