Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 236, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 6, 2011, 8:46 PM CDT for Carver County, McLeod County, Sibley County, Minnesota. It was in force for 44 min. 2 reports 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 6, 2011, 8:46 PM CDT (01:46 UTC)
- Expired
- Aug 6, 2011, 9:30 PM CDT
- In force
- 44 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 50.0 mph
Counties Carver County, MN, McLeod County, MN, Sibley County, MN
The radar
The Minneapolis radar (KMPX), 25 km from the middle of the area, began a volume at 01:49 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 6, 9:15 PM CDT | HAIL 1.75 | 1 Sw Norwood/Young Amer, MN | GOLF BALL SIZE HAIL REPORTED NEAR HWY 212. |
| Aug 6, 9:23 PM CDT | HAIL 1 | 1 Sw Norwood/Young Amer, MN | QUARTER SIZED HAIL REPORTED. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 1.8 hours before the alert went out and 22 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
- 931 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 1415 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
339
WUUS53 KMPX 070146
SVRMPX
MNC019-085-143-070230-
/O.NEW.KMPX.SV.W.0236.110807T0146Z-110807T0230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
846 PM CDT SAT AUG 6 2011
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CARVER COUNTY IN EAST CENTRAL MINNESOTA...
NORTHEASTERN MCLEOD COUNTY IN CENTRAL MINNESOTA...
NORTHEASTERN SIBLEY COUNTY IN CENTRAL MINNESOTA...
* UNTIL 930 PM CDT
* AT 844 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR LESTER
PRAIRIE...OR ABOUT 15 MILES EAST OF HUTCHINSON...AND MOVING
SOUTHEAST AT 35 MPH.
LOCATIONS IN THE WARNING INCLUDE...
LESTER PRAIRIE...
WINSTED...
NEW GERMANY...
PLATO...
MAYER...
NORWOOD/YOUNG AMERICA...
HAMBURG...
WACONIA...
COLOGNE...
CARVER...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.
THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL OVER NORTHEAST
MCLEOD COUNTY. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS!
&&
LAT...LON 4484 9424 4499 9409 4478 9359 4474 9363
4471 9361 4469 9364 4470 9367 4463 9376
4463 9379 4463 9381 4460 9388
TIME...MOT...LOC 0145Z 305DEG 29KT 4486 9406
WIND...HAIL <50MPH 1.25IN
$$1 follow-up statement
860
WWUS53 KMPX 070215
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
915 PM CDT SAT AUG 6 2011
MNC085-070229-
/O.CAN.KMPX.SV.W.0236.000000T0000Z-110807T0230Z/
MCLEOD MN-
915 PM CDT SAT AUG 6 2011
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MCLEOD COUNTY IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 4470 9404 4471 9404 4490 9387 4478 9359
4474 9363 4470 9362 4469 9364 4470 9367
4463 9376 4463 9381 4460 9388
TIME...MOT...LOC 0214Z 305DEG 29KT 4472 9379
$$
MNC019-143-070230-
/O.CON.KMPX.SV.W.0236.000000T0000Z-110807T0230Z/
CARVER MN-SIBLEY MN-
915 PM CDT SAT AUG 6 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
SIBLEY AND CARVER COUNTIES UNTIL 930 PM CDT...
AT 913 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS
LOCATED NEAR COLOGNE...MOVING SOUTHEAST AT 35 MPH.
LOCATIONS IMPACTED INCLUDE...
CARVER.
RURAL SOUTHERN CARVER COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.
THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS!
&&
LAT...LON 4470 9404 4471 9404 4490 9387 4478 9359
4474 9363 4470 9362 4469 9364 4470 9367
4463 9376 4463 9381 4460 9388
TIME...MOT...LOC 0214Z 305DEG 29KT 4472 9379
WIND...HAIL <50MPH 1.00IN
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 7:12 PM CDT | Severe Thunderstorm Warning | MPX | Meeker, Stearns, Wright | 33 min |
| Aug 6, 7:16 PM CDT | Special Weather Statement | MPX | Meeker | 44 min |
| Aug 6, 8:13 PM CDT | Special Weather Statement | MPX | McLeod | 47 min |
| Aug 6, 8:17 PM CDT | Severe Thunderstorm Warning | MPX | McLeod, Meeker, Wright | 43 min |
| Aug 6, 9:45 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Le Sueur, Rice, Scott | 45 min |
| Aug 6, 10:32 PM CDT | Special Weather Statement | MPX | Steele | 43 min |
| Aug 7, 7:27 AM CDT | River Flood Warning | MPX | Todd | 5 days |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.