Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 217, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 29, 2001, 8:00 PM CDT for Kandiyohi County, Swift County, Minnesota. It was in force for 45 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Aug 29, 2001, 8:00 PM CDT (01:00 UTC)
- Expired
- Aug 29, 2001, 8:45 PM CDT
- In force
- 45 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Kandiyohi County, MN, Swift County, MN
The radar
The Minneapolis radar (KMPX), 146 km from the middle of the area, began a volume at 01:02 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 29, 8:05 PM CDT | Hail 1.5 | Clontarf, MN | |
| Aug 29, 8:08 PM CDT | Hail 1.75 | 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 29, 3:30 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 1.0 hours before the alert went out and 143 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
- 1904 J/kg
- Mixed-layer CIN
- -172 J/kg
- Mixed-layer LCL
- 1004 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 390 m²/s²
- 0-3 km storm-relative helicity
- 463 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 13.8
The text
As transmitted, in the capitals the NWS used until 2016.
861 WUUS53 KMPX 300101 SVRMSP MNC067-151-300145- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 800 PM CDT WED AUG 29 2001 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SWIFT COUNTY IN WEST CENTRAL MINNESOTA KANDIYOHI COUNTY IN CENTRAL MINNESOTA * UNTIL 845 PM CDT * AT 800 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS 4 MILES WEST OF DE GRAFF...OR ABOUT 5 MILES SOUTHEAST OF BENSON...MOVING EAST AT 30 MPH. * SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE... SUNBURG. SPICER. NEW LONDON. MURDOCK. KERKHOVEN. DE GRAFF. BENSON.
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 7:19 PM CDT | Severe Thunderstorm Warning | MPX | Douglas, Todd | 41 min |
| Aug 29, 7:46 PM CDT | Severe Thunderstorm Warning | MPX | Pope, Stearns | 44 min |
| Aug 29, 8:29 PM CDT | Severe Thunderstorm Warning | MPX | Stearns | 46 min |
| Aug 29, 8:33 PM CDT | Severe Thunderstorm Warning | MPX | Lac qui Parle | 27 min |
| Aug 29, 10:31 PM CDT | Severe Thunderstorm Warning | MPX | Goodhue, Rice | 59 min |
| Aug 29, 10:31 PM CDT | Severe Thunderstorm Warning | MPX | Steele, Waseca | 59 min |
| Aug 29, 10:46 PM CDT | Severe Thunderstorm Warning | MPX | Washington | 29 min |
| Aug 29, 11:02 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Sherburne | 43 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2001Every severe thunderstorm warning in 2001
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.