Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 269, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 11, 2002, 9:59 PM CDT for Lac qui Parle County, Yellow Medicine County, Minnesota. It was in force for 61 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 11, 2002, 9:59 PM CDT (02:59 UTC)
- Expired
- Aug 11, 2002, 11:00 PM CDT
- In force
- 61 min
- Issued by
- NWS Twin Cities, MN
- Area
- Counties, with a storm outline in the text
Counties Lac qui Parle County, MN, Yellow Medicine County, MN
The radar
The Sioux Falls radar (KFSD), 153 km from the middle of the area, began a volume at 03:00 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.
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 11, 7:00 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 11, 9:55 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 3.0 hours before the alert went out and 173 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
- 2317 J/kg
- Mixed-layer CIN
- -146 J/kg
- Mixed-layer LCL
- 2063 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 115 m²/s²
- 0-3 km storm-relative helicity
- 92 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.5
The text
As transmitted, in the capitals the NWS used until 2016.
007
WUUS53 KMPX 120259
SVRMSP
MNC073-173-120400-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
959 PM CDT SUN AUG 11 2002
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
LAC QUI PARLE COUNTY IN WEST CENTRAL MINNESOTA
YELLOW MEDICINE COUNTY IN WEST CENTRAL MINNESOTA
* UNTIL 1100 PM CDT
* AT 959 PM CDT...RADAR INDICATED A LINE OF SEVERE STORMS APPROACHING
WESTERN MINNESOTA. DAMAGING WIND IS EXPECTED. THE LEADING EDGE OF
THE STORMS EXTENDED FROM 25 MILES WEST OF MADISON...TO 20 MILES
WEST OF CANBY. THE STORMS WERE MOVING EAST AT 40 MPH.
* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
CANBY.
MADISON.
DAWSON.
CLARKFIELD.
PORTER.
MARIETTA.
BOYD.
NASSAU.
THIS IS A DANGEROUS STORM WITH DAMAGING WINDS OF 60 TO 70 MPH.
STAY INDOORS AWAY FROM WINDOWS.
LAT...LON 4530 9668 4493 9667 4462 9669 4462 9603
4465 9582 4475 9574 4484 9576 4495 9590
4514 9607The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 11:16 PM CDT | Severe Thunderstorm Warning | MPX | Pope, Stevens, Swift | 59 min |
| Aug 11, 11:53 PM CDT | Severe Thunderstorm Warning | MPX | Redwood, Yellow Medicine | 37 min |
| Aug 12, 12:07 AM CDT | Severe Thunderstorm Warning | MPX | Douglas | 38 min |
| Aug 12, 12:23 AM CDT | Severe Thunderstorm Warning | MPX | Martin, Watonwan | 52 min |
| Aug 12, 12:55 AM CDT | Severe Thunderstorm Warning | MPX | Faribault | 50 min |
| Aug 12, 2:14 AM CDT | Severe Thunderstorm Warning | MPX | Ramsey | 31 min |
| Aug 12, 2:27 AM CDT | Severe Thunderstorm Warning | MPX | Anoka, Washington | 48 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.