Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 248, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 3, 2002, 5:32 PM CDT for Swift County, Minnesota. It was in force for 58 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 3, 2002, 5:32 PM CDT (22:32 UTC)
- Expired
- Aug 3, 2002, 6:30 PM CDT
- In force
- 58 min
- Issued by
- NWS Twin Cities, MN
- Area
- Counties, with a storm outline in the text
County Swift County, MN
The radar
The Minneapolis radar (KMPX), 163 km from the middle of the area, began a volume at 22:33 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 3, 5:45 PM CDT | Hail 1 | De Graff, MN |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 3, 3:00 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 10.5 hours before the alert went out and 160 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
- 1222 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 159 m²/s²
- 0-3 km storm-relative helicity
- 212 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
835 WUUS53 KMPX 032232 SVRMSP MNC151-032330- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 531 PM CDT SAT AUG 3 2002 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SWIFT COUNTY IN WEST CENTRAL MINNESOTA * UNTIL 630 PM CDT * AT 531 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS 10 MILES SOUTHWEST OF DE GRAFF...OR ABOUT 13 MILES SOUTH OF BENSON...MOVING NORTHEAST AT 45 MPH. * SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE... BENSON. DE GRAFF. MURDOCK. KERKHOVEN. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER... SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. LAT...LON 4515 9576 4516 9541 4539 9526 4537 9562
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 3:25 PM CDT | Severe Thunderstorm Warning | MPX | Anoka | 50 min |
| Aug 3, 3:54 PM CDT | Severe Thunderstorm Warning | MPX | Chisago, Washington | 51 min |
| Aug 3, 4:36 PM CDT | Severe Thunderstorm Warning | MPX | Yellow Medicine | 39 min |
| Aug 3, 5:01 PM CDT | Severe Thunderstorm Warning | MPX | McLeod | 44 min |
| Aug 3, 5:09 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Lac qui Parle | 51 min |
| Aug 3, 5:13 PM CDT | Severe Thunderstorm Warning | MPX | Sherburne, Wright | 47 min |
| Aug 3, 5:15 PM CDT | Severe Thunderstorm Warning | MPX | Yellow Medicine | 60 min |
| Aug 3, 5:23 PM CDT | Tornado Warning | MPX | Chisago | 37 min |
| Aug 3, 5:40 PM CDT | Severe Thunderstorm Warning | MPX | McLeod | 50 min |
| Aug 3, 5:49 PM CDT | Severe Thunderstorm Warning | MPX | Carver | 51 min |
| Aug 3, 6:09 PM CDT | Severe Thunderstorm Warning | MPX | Anoka | 36 min |
| Aug 3, 6:15 PM CDT | Tornado Warning | MPX | Carver, Scott, Sibley | 45 min |
| Aug 3, 6:27 PM CDT | Severe Thunderstorm Warning | MPX | McLeod | 48 min |
| Aug 3, 6:32 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Ramsey, Washington | 43 min |
| Aug 3, 6:32 PM CDT | Severe Thunderstorm Warning | MPX | Redwood | 58 min |
| Aug 3, 6:36 PM CDT | Flash Flood Warning | MPX | Yellow Medicine | 3 hr |
| Aug 3, 6:49 PM CDT | Severe Thunderstorm Warning | MPX | Sibley | 41 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2002Every severe thunderstorm warning 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.