Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 272, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 23, 2012, 8:07 PM CDT for McLeod County, Sibley County, Minnesota. It was in force for 38 min. 7 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 23, 2012, 8:07 PM CDT (01:07 UTC)
- Expired
- Aug 23, 2012, 8:45 PM CDT
- In force
- 38 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties McLeod County, MN, Sibley County, MN
The radar
The Minneapolis radar (KMPX), 66 km from the middle of the area, began a volume at 01:07 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 23, 8:10 PM CDT | TSTM WND DMG | Stewart, MN | NUMEROUS TREES AND BRANCHES DOWN IN STEWART. TIME ESTIMATED. |
| Aug 23, 8:17 PM CDT | HAIL 1 | E Stewart, MN | |
| Aug 23, 8:17 PM CDT | HAIL 1.25 | Stewart, MN | STRONG WINDS NOTED AS WELL...BUT NO DAMAGE WAS REPORTED AT THIS TIME. |
| Aug 23, 8:19 PM CDT | TSTM WND GST 62 | 6 S Hutchinson, MN | MEASURED AT HIGHWAY 15 AND 135TH STREET. |
| Aug 23, 8:22 PM CDT | HAIL 0.88 | 5 E Stewart, MN | |
| Aug 23, 8:43 PM CDT | TSTM WND DMG | 3 Nw Glencoe, MN | ROOF PARTIALLY OFF HOUSE. TREES DOWN. PART OF SILO ALSO BLOWN OFF. CORRECTED LOCATION INSTEAD OF 3W GLENCOE. |
| Aug 23, 8:43 PM CDT | TSTM WND DMG | 3 W Glencoe, MN | ROOF PARTIALLY OFF HOUSE. TREES DOWN. |
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, 1.1 hours before the alert went out and 64 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
- 1357 J/kg
- Mixed-layer CIN
- -65 J/kg
- Mixed-layer LCL
- 1842 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 105 m²/s²
- 0-3 km storm-relative helicity
- 223 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 8.5
The text
As transmitted, in the capitals the NWS used until 2016.
969
WUUS53 KMPX 240107
SVRMPX
MNC085-143-240145-
/O.NEW.KMPX.SV.W.0272.120824T0107Z-120824T0145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
807 PM CDT THU AUG 23 2012
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
MCLEOD COUNTY IN CENTRAL MINNESOTA...
CENTRAL SIBLEY COUNTY IN CENTRAL MINNESOTA...
* UNTIL 845 PM CDT
* AT 802 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS OF 60 MPH. THIS
STORM WAS LOCATED 18 MILES SOUTHWEST OF HUTCHINSON...AND MOVING
EAST AT 40 MPH.
LOCATIONS IN THE WARNING INCLUDE...
GLENCOE...
FERNANDO...
STEWART...
BROWNTON...
NEW AUBURN...
SUMTER...
BISCAY...
ARLINGTON...
SILVER LAKE...
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 4456 9451 4472 9451 4472 9449 4483 9450
4498 9409 4459 9406
TIME...MOT...LOC 0107Z 250DEG 33KT 4468 9451
WIND...HAIL 60MPH 1.00IN
$$
JRB4 follow-up statements
489
WWUS53 KMPX 240120
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
820 PM CDT THU AUG 23 2012
MNC085-143-240145-
/O.CON.KMPX.SV.W.0272.000000T0000Z-120824T0145Z/
MCLEOD MN-SIBLEY MN-
820 PM CDT THU AUG 23 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTH CENTRAL
SIBLEY AND MCLEOD COUNTIES UNTIL 845 PM CDT...
AT 816 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING
WINDS OF 60 MPH. THIS STORM WAS LOCATED 10 MILES NORTHWEST OF
GAYLORD...OR 17 MILES SOUTH OF HUTCHINSON...MOVING EAST AT 40 MPH.
IN ADDITION...AT 816 PM QUARTER SIZE HAIL WAS REPORTED IN STEWART
WITH THIS STORM.
LOCATIONS IMPACTED INCLUDE...
GLENCOE...BROWNTON...NEW AUBURN...SUMTER...BISCAY AND SILVER LAKE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.
&&
LAT...LON 4464 9451 4472 9451 4472 9449 4483 9450
4498 9409 4465 9406
TIME...MOT...LOC 0119Z 250DEG 33KT 4466 9433
WIND...HAIL 60MPH 1.00IN
$$
JRB553
WWUS53 KMPX 240124
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
824 PM CDT THU AUG 23 2012
MNC085-143-240145-
/O.CON.KMPX.SV.W.0272.000000T0000Z-120824T0145Z/
MCLEOD MN-SIBLEY MN-
824 PM CDT THU AUG 23 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTH CENTRAL
SIBLEY AND MCLEOD COUNTIES UNTIL 845 PM CDT...
AT 821 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING
WINDS OF 60 MPH. THIS STORM WAS LOCATED NEAR GAYLORD...OR 20 MILES
SOUTH OF HUTCHINSON...MOVING EAST AT 40 MPH.
IN ADDITION...AT 817 PM HALF DOLLAR SIZE HAIL WAS REPORTED IN
STEWART WITH THIS STORM.
LOCATIONS IMPACTED INCLUDE...
GLENCOE...NEW AUBURN...SUMTER...BISCAY AND SILVER LAKE.
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.
&&
LAT...LON 4464 9451 4472 9451 4472 9449 4483 9450
4498 9409 4465 9406
TIME...MOT...LOC 0124Z 250DEG 33KT 4461 9424
WIND...HAIL 60MPH 1.00IN
$$
JRB133 WWUS53 KMPX 240132 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 832 PM CDT THU AUG 23 2012 MNC085-143-240145- /O.CON.KMPX.SV.W.0272.000000T0000Z-120824T0145Z/ MCLEOD MN-SIBLEY MN- 832 PM CDT THU AUG 23 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTH CENTRAL SIBLEY AND CENTRAL MCLEOD COUNTIES UNTIL 845 PM CDT... AT 830 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS OF 60 MPH. THIS STORM HAS A HISTORY OF TREE DAMAGE AND HALF DOLLAR SIZE HAIL. THE STORM WAS LOCATED NEAR GAYLORD...OR 18 MILES NORTHWEST OF ST PETER...MOVING EAST AT 40 MPH. LOCATIONS IMPACTED INCLUDE... GLENCOE AND SILVER LAKE. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...LARGE HAIL...AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY INSIDE A STURDY STRUCTURE... SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. && LAT...LON 4464 9443 4486 9443 4498 9409 4465 9406 TIME...MOT...LOC 0131Z 250DEG 33KT 4457 9412 WIND...HAIL 60MPH 1.00IN $$ JRB
487 WWUS53 KMPX 240140 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 840 PM CDT THU AUG 23 2012 MNC085-143-240145- /O.CON.KMPX.SV.W.0272.000000T0000Z-120824T0145Z/ MCLEOD MN-SIBLEY MN- 840 PM CDT THU AUG 23 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTH CENTRAL SIBLEY AND EASTERN MCLEOD COUNTIES UNTIL 845 PM CDT... AT 835 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL...AND DAMAGING WINDS OF 65 MPH. THIS STORM WAS LOCATED 9 MILES EAST OF GAYLORD...OR 14 MILES NORTH OF ST PETER...MOVING EAST AT 40 MPH. LOCATIONS IMPACTED INCLUDE... 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 DESTRUCTIVE WINDS AND LARGE DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS! && LAT...LON 4465 9425 4491 9430 4498 9409 4467 9406 TIME...MOT...LOC 0140Z 250DEG 33KT 4453 9398 WIND...HAIL 60MPH 1.25IN $$ JRB
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 7:02 PM CDT | Special Weather Statement | MPX | Wright | 28 min |
| Aug 23, 7:08 PM CDT | Special Weather Statement | MPX | Redwood | 52 min |
| Aug 23, 7:12 PM CDT | Severe Thunderstorm Warning | MPX | Wright | 33 min |
| Aug 23, 7:46 PM CDT | Severe Thunderstorm Warning | MPX | Carver, McLeod, Wright | 44 min |
| Aug 23, 7:53 PM CDT | Severe Thunderstorm Warning | MPX | Renville, Sibley | 37 min |
| Aug 23, 8:37 PM CDT | Severe Thunderstorm Warning | MPX | Carver, Hennepin, McLeod, Sibley | 38 min |
| Aug 23, 8:47 PM CDT | Areal Flood Advisory | MPX | Carver, Hennepin, McLeod, Wright | 3 hr |
| Aug 23, 8:49 PM CDT | Tornado Warning | MPX | Carver | 14 min |
| Aug 23, 9:00 PM CDT | Special Weather Statement | MPX | Carver, Dakota, Hennepin, Ramsey, Scott, Washington and 1 more | 90 min |
| Aug 23, 9:02 PM CDT | Severe Thunderstorm Warning | MPX | Carver, Hennepin, Scott | 23 min |
| Aug 23, 9:32 PM CDT | Areal Flood Advisory | MPX | Carver, Dakota, Hennepin, Ramsey, Scott | 3 hr |
| Aug 23, 10:33 PM CDT | Flash Flood Warning | MPX | Carver, Wright | 2 hr |
| Aug 23, 10:43 PM CDT | Special Weather Statement | MPX | Scott | 47 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2012Every severe thunderstorm warning in 2012
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.