Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 36, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at May 21, 2011, 5:35 PM CDT for Carver County, McLeod County, Wright County, Minnesota. It was in force for 55 min. 4 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
- May 21, 2011, 5:35 PM CDT (22:35 UTC)
- Expired
- May 21, 2011, 6:30 PM CDT
- In force
- 55 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
Counties Carver County, MN, McLeod County, MN, Wright County, MN
The radar
The Minneapolis radar (KMPX), 44 km from the middle of the area, began a volume at 22:36 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 |
|---|---|---|---|
| May 21, 5:39 PM CDT | HAIL 0.75 | 3 W Lester Prairie, MN | |
| May 21, 5:53 PM CDT | HAIL 0.25 | Montrose, MN | DIME SIZE |
| May 21, 6:18 PM CDT | HAIL 0.75 | 7 Sw Rockford, MN | 0.88 HAIL WITH ROTATING WALL CLOUD |
| May 21, 6:25 PM CDT | HAIL 1 | Delano, MN | DIME TO QUARTER |
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 12:00Z, 10.6 hours before the alert went out and 41 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
- 2 J/kg
- Mixed-layer CIN
- -114 J/kg
- Mixed-layer LCL
- 474 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 206 m²/s²
- 0-3 km storm-relative helicity
- 240 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
216
WUUS53 KMPX 212235
SVRMPX
MNC019-085-171-212330-
/O.NEW.KMPX.SV.W.0036.110521T2235Z-110521T2330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
535 PM CDT SAT MAY 21 2011
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN CARVER COUNTY IN EAST CENTRAL MINNESOTA...
NORTHEASTERN MCLEOD COUNTY IN CENTRAL MINNESOTA...
SOUTHERN WRIGHT COUNTY IN CENTRAL MINNESOTA...
* UNTIL 630 PM CDT
* AT 531 PM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...
CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL AND DAMAGING WINDS IN
EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM SILVER LAKE TO LESTER PRAIRIE...AND MOVING NORTHEAST AT 15
MPH.
LOCATIONS IN THE WARNING INCLUDE...
LESTER PRAIRIE...
NEW GERMANY...
WINSTED...
HOWARD LAKE...
WAVERLY...
MONTROSE...
DELANO...
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.
REPORT ANY SIGNIFICANT WIND OR HAIL DAMAGE TO THE NEAREST LAW
ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER SERVICE.
&&
LAT...LON 4514 9377 4501 9378 4483 9404 4484 9420
4493 9432 4498 9428 4498 9426 4500 9426
4516 9411
TIME...MOT...LOC 2235Z 213DEG 12KT 4495 9420 4492 9412
4487 9406
WIND...HAIL 60MPH 1.25IN
$$
JLT3 follow-up statements
109
WWUS53 KMPX 212248
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
548 PM CDT SAT MAY 21 2011
MNC019-085-171-212330-
/O.CON.KMPX.SV.W.0036.000000T0000Z-110521T2330Z/
WRIGHT MN-MCLEOD MN-CARVER MN-
548 PM CDT SAT MAY 21 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
CARVER...NORTHEASTERN MCLEOD AND SOUTHERN WRIGHT COUNTIES UNTIL 630
PM CDT...
AT 545 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG
A LINE EXTENDING FROM 5 MILES NORTH OF SILVER LAKE TO WINSTED TO
LESTER PRAIRIE...MOVING NORTHEAST AT 15 MPH.
LOCATIONS IMPACTED INCLUDE...
NEW GERMANY...WINSTED...HOWARD LAKE...WAVERLY...MONTROSE...
DELANO...STOCKHOLM AND SMITH LAKE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN THE TWIN CITIES.
&&
LAT...LON 4514 9377 4501 9378 4483 9404 4484 9420
4493 9432 4498 9428 4498 9426 4500 9426
4516 9411
TIME...MOT...LOC 2248Z 213DEG 12KT 4499 9417 4496 9409
4491 9403
WIND...HAIL 60MPH 1.25IN
$$
JLT224
WWUS53 KMPX 212259
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
559 PM CDT SAT MAY 21 2011
MNC019-085-171-212330-
/O.CON.KMPX.SV.W.0036.000000T0000Z-110521T2330Z/
WRIGHT MN-MCLEOD MN-CARVER MN-
559 PM CDT SAT MAY 21 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
CARVER...NORTHEASTERN MCLEOD AND SOUTHERN WRIGHT COUNTIES UNTIL 630
PM CDT...
AT 554 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG
A LINE EXTENDING FROM HOWARD LAKE TO WINSTED...MOVING NORTHEAST AT 20
MPH.
LOCATIONS IMPACTED INCLUDE...
HOWARD LAKE...WAVERLY...MONTROSE...DELANO AND SMITH LAKE.
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 4514 9377 4501 9378 4483 9404 4484 9420
4493 9432 4498 9428 4498 9426 4500 9426
4516 9411
TIME...MOT...LOC 2259Z 219DEG 18KT 4504 9410 4501 9402
4496 9396
WIND...HAIL 60MPH 1.00IN
$$
JLT850
WWUS53 KMPX 212325
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
625 PM CDT SAT MAY 21 2011
MNC019-085-171-212330-
/O.CON.KMPX.SV.W.0036.000000T0000Z-110521T2330Z/
WRIGHT MN-MCLEOD MN-CARVER MN-
625 PM CDT SAT MAY 21 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
CARVER...NORTHEASTERN MCLEOD AND SOUTHERN WRIGHT COUNTIES UNTIL 630
PM CDT...
AT 622 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG
A LINE EXTENDING FROM WAVERLY TO MONTROSE...MOVING NORTHEAST AT 20
MPH. THESE STORMS HAVE ALSO HAD A HISTORY OF WALL CLOUDS MOVING
ACROSS THE WARNED AREA. IF CONDITIONS WARRANT...A TORNADO WARNING
WILL BE ISSUED.
LOCATIONS IMPACTED INCLUDE...
DELANO.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN THE TWIN CITIES.
&&
LAT...LON 4514 9377 4501 9378 4483 9404 4484 9420
4493 9432 4498 9428 4498 9426 4500 9426
4516 9411
TIME...MOT...LOC 2324Z 219DEG 18KT 4514 9399 4511 9391
4506 9385
WIND...HAIL 60MPH 1.00IN
$$
JLTThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 3:20 PM CDT | Special Weather Statement | MPX | Renville | 40 min |
| May 21, 3:57 PM CDT | Special Weather Statement | MPX | McLeod, Meeker, Wright | 63 min |
| May 21, 4:11 PM CDT | Severe Thunderstorm Warning | MPX | McLeod, Meeker, Renville, Sibley, Wright | 49 min |
| May 21, 4:39 PM CDT | Severe Thunderstorm Warning | MPX | McLeod, Meeker, Wright | 66 min |
| May 21, 5:11 PM CDT | Special Weather Statement | MPX | Chippewa, Swift | 49 min |
| May 21, 5:25 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Pope, Swift | 50 min |
| May 21, 6:13 PM CDT | Severe Thunderstorm Warning | MPX | Hennepin, Wright | 62 min |
| May 21, 6:37 PM CDT | Tornado Warning | MPX | Hennepin, Isanti | 23 min |
| May 21, 6:54 PM CDT | Special Weather Statement | MPX | Anoka, Sherburne | 51 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.