Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 282, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Sep 4, 2012, 11:49 PM CDT for 5 counties in Minnesota. It was in force for 56 min. 5 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
- Sep 4, 2012, 11:49 PM CDT (04:49 UTC)
- Expired
- Sep 5, 2012, 12:45 AM CDT
- In force
- 56 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Blue Earth County, MN, Faribault County, MN, Freeborn County, MN, Steele County, MN, Waseca County, MN
The radar
The Minneapolis radar (KMPX), 119 km from the middle of the area, began a volume at 04:52 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 |
|---|---|---|---|
| Sep 4, 11:50 PM CDT | TSTM WND DMG | Wells, MN | SOME TREES DOWN. POWER OUTAGES ALSO NOTED. |
| Sep 5, 12:06 AM CDT | TSTM WND DMG | Albert Lea, MN | TREE DOWN ON A HOUSE. ALSO REPORTED WIDESPREAD TREE DAMAGE ACROSS FREEBORN COUNTY...SOME POWER LINES DOWN AS WELL. TIME OF REPORT ESTIMATED. |
| Sep 5, 12:10 AM CDT | TSTM WND DMG | Albert Lea, MN | NUMEROUS TREES AND POWERLINES WERE BLOCKING ROADWAYS. A BRANCH OF A MAPLE TREE FELL ONTO TWO AUTOMOBILES. COURTESY OF ALBERT LEA TRIBUNE. TIME ESTIMATED. |
| Sep 5, 12:15 AM CDT | TSTM WND GST 58 | 10 Sw Owatonna, MN | |
| Sep 5, 12:20 AM CDT | TSTM WND DMG | 4 N Hayward, MN | TREES DOWN. TIME ESTIMATED. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 4, 10:19 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 4.8 hours before the alert went out and 119 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3109 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
452
WUUS53 KMPX 050449
SVRMPX
MNC013-043-047-147-161-050545-
/O.NEW.KMPX.SV.W.0282.120905T0449Z-120905T0545Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1149 PM CDT TUE SEP 4 2012
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EASTERN BLUE EARTH COUNTY IN SOUTH CENTRAL MINNESOTA...
EASTERN FARIBAULT COUNTY IN SOUTH CENTRAL MINNESOTA...
FREEBORN COUNTY IN SOUTH CENTRAL MINNESOTA...
STEELE COUNTY IN SOUTH CENTRAL MINNESOTA...
WASECA COUNTY IN SOUTH CENTRAL MINNESOTA...
* UNTIL 1245 AM CDT
* AT 1144 PM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...
CAPABLE OF PRODUCING DAMAGING WINDS OF 60 MPH. THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 8 MILES EAST OF MANKATO TO 18
MILES NORTHEAST OF BLUE EARTH TO 13 MILES NORTHWEST OF LAKE
MILLS...AND MOVING EAST AT 35 MPH. PENNY SIZE HAIL MAY ALSO
ACCOMPANY THESE DAMAGING WINDS.
LOCATIONS IN THE WARNING INCLUDE...
WASECA...
ALBERT LEA...
HAYWARD...
OWATONNA...
WALTERS...
WELLS...
BARODA...
JANESVILLE...
MANSFIELD...
WALDORF...
ALDEN...
CONGER...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS IN EXCESS OF 60 MPH AND HAIL. SEEK SHELTER NOW INSIDE
A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
&&
LAT...LON 4381 9386 4417 9384 4418 9304 4350 9304
4349 9305 4350 9379
TIME...MOT...LOC 0448Z 274DEG 31KT 4416 9378 4382 9378
4354 9368
WIND...HAIL 60MPH 0.75IN
$$2 follow-up statements
684
WWUS53 KMPX 050509
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1209 AM CDT WED SEP 5 2012
MNC013-043-050523-
/O.CAN.KMPX.SV.W.0282.000000T0000Z-120905T0545Z/
FARIBAULT MN-BLUE EARTH MN-
1209 AM CDT WED SEP 5 2012
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN BLUE EARTH AND
EASTERN FARIBAULT COUNTIES IS CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
WARNED AREA.
LAT...LON 4350 9364 4387 9365 4417 9366 4418 9304
4350 9304 4349 9305
TIME...MOT...LOC 0508Z 274DEG 31KT 4415 9354 4381 9354
4353 9344
$$
MNC047-147-161-050545-
/O.CON.KMPX.SV.W.0282.000000T0000Z-120905T0545Z/
FREEBORN MN-STEELE MN-WASECA MN-
1209 AM CDT WED SEP 5 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN
WASECA...STEELE AND FREEBORN COUNTIES UNTIL 1245 AM CDT...
AT 1205 AM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS OF 60 MPH.
THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 6 MILES
NORTHWEST OF WASECA TO 15 MILES NORTHWEST OF ALBERT LEA TO 8 MILES
NORTH OF LAKE MILLS...MOVING EAST AT 35 MPH. PENNY SIZE HAIL MAY ALSO
ACCOMPANY THESE DAMAGING WINDS.
LOCATIONS IMPACTED INCLUDE...
WASECA...ALBERT LEA...HAYWARD...OWATONNA...TWIN LAKES...NEW
RICHLAND...HARTLAND...MANCHESTER...DEERFIELD...GLENVILLE...CLARKS
GROVE...ELLENDALE...GENEVA...MEDFORD AND CLINTON FALLS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...HAIL...AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.
&&
LAT...LON 4350 9364 4387 9365 4417 9366 4418 9304
4350 9304 4349 9305
TIME...MOT...LOC 0508Z 274DEG 31KT 4415 9354 4381 9354
4353 9344
WIND...HAIL 60MPH 0.75IN
$$
LS600
WWUS53 KMPX 050535
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1235 AM CDT WED SEP 5 2012
MNC161-050547-
/O.CAN.KMPX.SV.W.0282.000000T0000Z-120905T0545Z/
WASECA MN-
1235 AM CDT WED SEP 5 2012
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN WASECA COUNTY IS
CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
WARNED AREA.
LAT...LON 4350 9316 4382 9315 4417 9339 4418 9304
4350 9304 4349 9305
TIME...MOT...LOC 0532Z 274DEG 31KT 4413 9325 4382 9308
4350 9309
$$
MNC047-147-050545-
/O.CON.KMPX.SV.W.0282.000000T0000Z-120905T0545Z/
FREEBORN MN-STEELE MN-
1235 AM CDT WED SEP 5 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
STEELE AND EASTERN FREEBORN COUNTIES UNTIL 1245 AM CDT...
AT 1230 AM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS OF 60 MPH.
THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM OWATONNA TO 12
MILES NORTHWEST OF AUSTIN TO 6 MILES NORTHEAST OF NORTHWOOD...MOVING
EAST AT 35 MPH. PENNY SIZE HAIL MAY ALSO ACCOMPANY THESE DAMAGING
WINDS.
LOCATIONS IMPACTED INCLUDE...
CLINTON FALLS...MEDFORD...LONDON...BLOOMING PRAIRIE...BIXBY AND
MERTON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...HAIL...AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.
&&
LAT...LON 4350 9316 4382 9315 4417 9339 4418 9304
4350 9304 4349 9305
TIME...MOT...LOC 0532Z 274DEG 31KT 4413 9325 4382 9308
4350 9309
WIND...HAIL 60MPH 0.75IN
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 4, 10:08 PM CDT | Special Weather Statement | MPX | Martin | 67 min |
| Sep 4, 10:33 PM CDT | Severe Thunderstorm Warning | MPX | Martin | 39 min |
| Sep 4, 11:24 PM CDT | Special Weather Statement | MPX | Blue Earth, Faribault, Le Sueur, Nicollet, Scott, Waseca | 36 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.