Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 240, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 23, 2011, 2:30 AM CDT for 4 counties in Minnesota. It was in force for 45 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 23, 2011, 2:30 AM CDT (07:30 UTC)
- Expired
- Aug 23, 2011, 3:15 AM CDT
- In force
- 45 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Le Sueur County, MN, Nicollet County, MN, Rice County, MN, Sibley County, MN
The radar
The Minneapolis radar (KMPX), 49 km from the middle of the area, began a volume at 07:31 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 nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 7.5 hours before the alert went out and 49 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
- 114 J/kg
- Mixed-layer CIN
- -258 J/kg
- Mixed-layer LCL
- 1559 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 76 m²/s²
- 0-3 km storm-relative helicity
- 155 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
671 WUUS53 KMPX 230730 SVRMPX MNC079-103-131-143-230815- /O.NEW.KMPX.SV.W.0240.110823T0730Z-110823T0815Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 230 AM CDT TUE AUG 23 2011 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... LE SUEUR COUNTY IN SOUTH CENTRAL MINNESOTA... EASTERN NICOLLET COUNTY IN SOUTH CENTRAL MINNESOTA... WESTERN RICE COUNTY IN SOUTH CENTRAL MINNESOTA... SOUTHEASTERN SIBLEY COUNTY IN CENTRAL MINNESOTA... * UNTIL 315 AM CDT * AT 227 AM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR NORSELAND...OR ABOUT 6 MILES SOUTHWEST OF LE SUEUR...AND MOVING EAST AT 30 MPH. LOCATIONS IN THE WARNING INCLUDE... ST PETER... LE SUEUR... KASOTA... HENDERSON... CLEVELAND... ST HENRY... LE CENTER... MONTGOMERY... KILKENNY... LONSDALE... VESELI... WARSAW... MORRISTOWN... PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR DAMAGING WINDS IN EXCESS OF 60 MPH AND LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. && LAT...LON 4452 9330 4421 9330 4426 9409 4454 9402 TIME...MOT...LOC 0730Z 277DEG 25KT 4442 9398 WIND...HAIL 60MPH 1.00IN $$ BAP
1 follow-up statement
299 WWUS53 KMPX 230803 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 303 AM CDT TUE AUG 23 2011 MNC103-230818- /O.CAN.KMPX.SV.W.0240.000000T0000Z-110823T0815Z/ NICOLLET MN- 303 AM CDT TUE AUG 23 2011 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN NICOLLET COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES. LAT...LON 4452 9330 4425 9330 4429 9382 4454 9398 TIME...MOT...LOC 0803Z 242DEG 23KT 4449 9368 $$ MNC079-131-143-230815- /O.CON.KMPX.SV.W.0240.000000T0000Z-110823T0815Z/ LE SUEUR MN-RICE MN-SIBLEY MN- 303 AM CDT TUE AUG 23 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN SIBLEY...WESTERN RICE AND LE SUEUR COUNTIES UNTIL 315 AM CDT... AT 303 AM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 6 MILES NORTH OF LE CENTER...OR 10 MILES EAST OF LE SUEUR...MOVING NORTHEAST AT 25 MPH. LOCATIONS IMPACTED INCLUDE... MONTGOMERY...VESELI...LONSDALE AND HEIDELBERG. PRECAUTIONARY/PREPAREDNESS ACTIONS... TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES. && LAT...LON 4452 9330 4425 9330 4429 9382 4454 9398 TIME...MOT...LOC 0803Z 242DEG 23KT 4449 9368 WIND...HAIL 60MPH 1.00IN $$
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 12:08 AM CDT | Special Weather Statement | MPX | Martin, Watonwan | 52 min |
| Aug 23, 12:44 AM CDT | Special Weather Statement | MPX | Redwood | 46 min |
| Aug 23, 1:24 AM CDT | Special Weather Statement | MPX | Renville | 51 min |
| Aug 23, 2:01 AM CDT | Special Weather Statement | MPX | Nicollet | 44 min |
| Aug 23, 2:04 AM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Brown, Nicollet | 26 min |
| Aug 23, 2:13 AM CDT | Special Weather Statement | MPX | Douglas, Stevens | 62 min |
| Aug 23, 2:24 AM CDT | Severe Thunderstorm Warning | MPX | Douglas, Pope, Stevens, Todd | 66 min |
| Aug 23, 2:51 AM CDT | Special Weather Statement | MPX | Freeborn | 39 min |
| Aug 23, 2:55 AM CDT | Severe Thunderstorm Warning | MPX | Douglas, Pope, Stearns, Stevens, Swift, Todd | 65 min |
| Aug 23, 2:57 AM CDT | Special Weather Statement | MPX | Carver | 48 min |
| Aug 23, 3:08 AM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Lac qui Parle, Swift | 67 min |
| Aug 23, 3:12 AM CDT | Severe Thunderstorm Warning | MPX | Scott | 33 min |
| Aug 23, 3:38 AM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Kandiyohi, Lac qui Parle, Meeker, Pope, Stearns and 2 more | 56 min |
| Aug 23, 3:40 AM CDT | Special Weather Statement | MPX | Dakota | 50 min |
| Aug 23, 4:04 AM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi, McLeod, Meeker, Renville, Stearns, Yellow Medicine | 56 min |
| Aug 23, 4:28 AM CDT | Special Weather Statement | MPX | Benton, Isanti, McLeod, Renville, Sherburne, Wright | 47 min |
| Aug 23, 5:12 AM CDT | Severe Thunderstorm Warning | MPX | Anoka, Carver, Hennepin, Wright | 46 min |
| Aug 23, 5:30 AM CDT | Severe Thunderstorm Warning | MPX | Anoka, Dakota, Ramsey | 46 min |
| Aug 23, 5:52 AM CDT | Special Weather Statement | MPX | Washington | 38 min |
| Aug 23, 6:12 AM CDT | Severe Thunderstorm Warning | MPX | Faribault | 33 min |
| Aug 23, 6:42 AM CDT | Special Weather Statement | MPX | Freeborn | 33 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2011Every severe thunderstorm warning in 2011
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.