Alert archive / Minnesota / Severe Thunderstorm Watches in 2002
Severe Thunderstorm Watch 530
The Storm Prediction Center issued this severe thunderstorm watch at Jul 25, 2002, 12:25 AM CDT for 18 counties in Minnesota; Richland County, North Dakota; 8 counties in South Dakota. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 25, 2002, 12:25 AM CDT (05:25 UTC)
- Expired
- Jul 25, 2002, 4:00 AM CDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
All 27 counties
Becker County, MN, Big Stone County, MN, Cass County, MN, Chippewa County, MN, Clay County, MN, Douglas County, MN, Grant County, MN, Hubbard County, MN, Lac qui Parle County, MN, Otter Tail County, MN, Pope County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Traverse County, MN, Wadena County, MN, Wilkin County, MN, Yellow Medicine County, MN, Richland County, ND, Clark County, SD, Codington County, SD, Day County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD, Marshall County, SD, Roberts County, SD
The radar
The Aberdeen radar (KABR), 134 km from the middle of the area, began a volume at 05:28 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
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 12:45 AM CDT | Severe Thunderstorm Warning | FGF | Richland | 45 min |
| Jul 25, 1:01 AM CDT | Severe Thunderstorm Warning | ABR | Grant, Roberts | 44 min |
| Jul 25, 1:09 AM CDT | Severe Thunderstorm Warning | FGF | Clay | 51 min |
| Jul 25, 1:33 AM CDT | Severe Thunderstorm Warning | ABR | Big Stone, Traverse | 42 min |
| Jul 25, 1:55 AM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Lac qui Parle, Stevens, Swift, Yellow Medicine | 65 min |
| Jul 25, 1:56 AM CDT | Severe Thunderstorm Warning | FGF | Becker | 49 min |
| Jul 25, 2:41 AM CDT | Severe Thunderstorm Warning | FGF | Becker | 49 min |
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 5.4 hours before the alert went out and 154 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
- 2473 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 1734 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 140 m²/s²
- 0-3 km storm-relative helicity
- 191 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 14.5
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 8:25 PM CDT | Tornado Watch | SPC | Cottonwood, Jackson, Murray, Nobles, Pipestone, Rock | 4 hr |
| Jul 24, 7:50 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Burleigh, Eddy, Emmons, Grant, Hettinger and 8 more | 5 hr |
| Jul 24, 10:05 PM CDT | Severe Thunderstorm Watch | SPC | Barnes, Cass, Dickey, Emmons, Kidder, LaMoure and 5 more | 4 hr |
| Jul 25, 3:05 AM CDT | Severe Thunderstorm Watch | SPC | Clay, Lincoln, Union | 5 hr |
Nearby
Severe Thunderstorm Watches in Minnesota, 2002Severe Thunderstorm Watches in South Dakota, 2002Severe Thunderstorm Watches in North Dakota, 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.