Alert archive / Minnesota / Severe Thunderstorm Watches in 2002
Severe Thunderstorm Watch 542
The Storm Prediction Center issued this severe thunderstorm watch at Jul 28, 2002, 1:00 PM CDT for 4 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 28, 2002, 1:00 PM CDT (18:00 UTC)
- Expired
- Jul 28, 2002, 6:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 51 counties
Cherokee County, IA, Dickinson County, IA, Lyon County, IA, O'Brien County, IA, Osceola County, IA, Plymouth County, IA, Sioux County, IA, Woodbury County, IA, Big Stone County, MN, Chippewa County, MN, Cottonwood County, MN, Douglas County, MN, Grant County, MN, Jackson County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Lincoln County, MN, Lyon County, MN, Meeker County, MN, Morrison County, MN, Murray County, MN, Nobles County, MN, Pipestone County, MN, Pope County, MN, Redwood County, MN, Renville County, MN, Rock County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Traverse County, MN, Yellow Medicine County, MN, Cedar County, NE, Dakota County, NE, Dixon County, NE, Knox County, NE, Pierce County, NE, Brookings County, SD, Clay County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD, Lake County, SD, Lincoln County, SD, McCook County, SD, Minnehaha County, SD, Moody County, SD, Turner County, SD, Union County, SD, Yankton County, SD
The radar
The Sioux Falls radar (KFSD), 28 km from the middle of the area, began a volume at 18:03 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
20 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 1:59 PM CDT | Tornado Warning | FSD | Brookings, Kingsbury | 41 min |
| Jul 28, 2:12 PM CDT | Tornado Warning | FSD | Brookings | 48 min |
| Jul 28, 2:21 PM CDT | Severe Thunderstorm Warning | FSD | Lake, Moody | 39 min |
| Jul 28, 2:44 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 31 min |
| Jul 28, 2:48 PM CDT | Severe Thunderstorm Warning | FSD | Lake, Moody | 42 min |
| Jul 28, 2:52 PM CDT | Tornado Warning | FSD | Lincoln | 23 min |
| Jul 28, 2:54 PM CDT | Severe Thunderstorm Warning | FSD | Pipestone | 36 min |
| Jul 28, 2:59 PM CDT | Severe Thunderstorm Warning | FSD | Brookings | 31 min |
| Jul 28, 3:14 PM CDT | Severe Thunderstorm Warning | FSD | Murray | 46 min |
| Jul 28, 3:16 PM CDT | Tornado Warning | FSD | Lincoln, Lyon, Murray | 34 min |
| Jul 28, 3:19 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha | 41 min |
| Jul 28, 3:22 PM CDT | Severe Thunderstorm Warning | FSD | Pipestone | 23 min |
| Jul 28, 3:27 PM CDT | Severe Thunderstorm Warning | FSD | Moody | 33 min |
| Jul 28, 3:39 PM CDT | Severe Thunderstorm Warning | MPX | Redwood | 51 min |
| Jul 28, 3:45 PM CDT | Severe Thunderstorm Warning | FSD | Rock | 45 min |
| Jul 28, 3:51 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Murray | 39 min |
| Jul 28, 4:08 PM CDT | Severe Thunderstorm Warning | FSD | Cottonwood | 52 min |
| Jul 28, 4:17 PM CDT | Severe Thunderstorm Warning | MPX | Renville | 58 min |
| Jul 28, 4:28 PM CDT | Severe Thunderstorm Warning | MPX | Redwood | 32 min |
| Jul 28, 5:39 PM CDT | Severe Thunderstorm Warning | FSD | Dickinson, Osceola | 36 min |
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 6.0 hours before the alert went out and 194 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
- 99 J/kg
- Mixed-layer CIN
- -249 J/kg
- Mixed-layer LCL
- 1295 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 255 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.4
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 8:55 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 21 more | 5 hr |
| Jul 28, 3:55 PM CDT | Tornado Watch | SPC | Cerro Gordo, Chickasaw, Clay, Emmet, Floyd, Hancock and 6 more | 5 hr |
| Jul 28, 4:50 PM CDT | Tornado Watch | SPC | Audubon, Buena Vista, Calhoun, Carroll, Cherokee, Crawford and 13 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Minnesota, 2002Severe Thunderstorm Watches in South Dakota, 2002Severe Thunderstorm Watches in Iowa, 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.