Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 159, NWS Twin Cities, MN

June 14, 20124 counties in Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 14, 2012, 8:25 PM CDT for 4 counties in Minnesota. It was in force for 35 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
Jun 14, 2012, 8:25 PM CDT (01:25 UTC)
Expired
Jun 14, 2012, 9:00 PM CDT
In force
35 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Blue Earth County, MN, Faribault County, MN, Freeborn County, MN, Waseca County, MN

The radar

The Minneapolis radar (KMPX), 131 km from the middle of the area, began a volume at 01:27 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 14, 2:45 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 1.4 hours before the alert went out and 131 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.

Skew-T log-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2012-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1087 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2012-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 307 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1087 J/kg
Mixed-layer CIN
-99 J/kg
Mixed-layer LCL
751 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
307 m²/s²
0-3 km storm-relative helicity
337 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

103 
WUUS53 KMPX 150125
SVRMPX
MNC013-043-047-161-150200-
/O.NEW.KMPX.SV.W.0159.120615T0125Z-120615T0200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
825 PM CDT THU JUN 14 2012

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN BLUE EARTH COUNTY IN SOUTH CENTRAL MINNESOTA...
  FARIBAULT COUNTY IN SOUTH CENTRAL MINNESOTA...
  WESTERN FREEBORN COUNTY IN SOUTH CENTRAL MINNESOTA...
  SOUTHWESTERN WASECA COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 900 PM CDT

* AT 822 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
  PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS OF 60 MPH. THIS
  STORM WAS LOCATED NEAR BLUE EARTH...AND MOVING NORTHEAST AT 35 MPH.

LOCATIONS IN THE WARNING INCLUDE...
  BLUE EARTH...
  WINNEBAGO...
  DELAVAN...
  BRICELYN...
  KIESTER...
  BRUSH CREEK...
  MAPLETON...
  MINNESOTA LAKE...
  WELLS...
  FREEBORN...
  PEMBERTON...
  ALDEN...
  CONGER...
  TWIN LAKES...

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.

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND A LARGE 
TREE WAS BLOWN DOWN IN FAIRMONT. SEEK SHELTER NOW INSIDE A STURDY 
STRUCTURE AND STAY AWAY FROM WINDOWS!

&&

LAT...LON 4379 9424 4406 9373 4350 9338 4349 9339
      4349 9399
TIME...MOT...LOC 0124Z 239DEG 29KT 4368 9412
WIND...HAIL 60MPH 1.00IN

$$

JRB
2 follow-up statements
750 
WWUS53 KMPX 150143
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
843 PM CDT THU JUN 14 2012

MNC013-150157-
/O.CAN.KMPX.SV.W.0159.000000T0000Z-120615T0200Z/
BLUE EARTH MN-
843 PM CDT THU JUN 14 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BLUE EARTH COUNTY
IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED.

LAT...LON 4377 9402 4390 9364 4359 9345 4353 9390
TIME...MOT...LOC 0142Z 252DEG 33KT 4366 9390

$$

MNC043-047-161-150200-
/O.CON.KMPX.SV.W.0159.000000T0000Z-120615T0200Z/
FARIBAULT MN-FREEBORN MN-WASECA MN-
843 PM CDT THU JUN 14 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
WASECA...WESTERN FREEBORN AND EASTERN FARIBAULT COUNTIES UNTIL 900 PM
CDT...

AT 841 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 5 MILES SOUTHWEST OF BRUSH
CREEK...OR 10 MILES EAST OF BLUE EARTH...MOVING EAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  BRICELYN...BRUSH CREEK...WELLS...ALDEN...FREEBORN...CONGER...
  EASTON...WALTERS...BARODA AND MANSFIELD.

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 4377 9402 4390 9364 4359 9345 4353 9390
TIME...MOT...LOC 0142Z 252DEG 33KT 4366 9390
WIND...HAIL 60MPH 1.00IN

$$

JRB
738 
WWUS53 KMPX 150204
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
904 PM CDT THU JUN 14 2012

MNC043-047-161-150218-
/O.EXP.KMPX.SV.W.0159.000000T0000Z-120615T0200Z/
FARIBAULT MN-FREEBORN MN-WASECA MN-
904 PM CDT THU JUN 14 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN WASECA...WESTERN
FREEBORN AND EASTERN FARIBAULT COUNTIES HAS EXPIRED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR 
PROPERTY...HOWEVER HEAVY RAIN IS STILL POSSIBLE.

IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 10 PM CDT.

LAT...LON 4377 9402 4390 9364 4359 9345 4353 9390
TIME...MOT...LOC 0143Z 252DEG 33KT 4363 9387

$$

JRB

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 14, 7:29 PM CDTFlash Flood WarningMPXGoodhue5 hr
Jun 14, 7:56 PM CDTSevere Thunderstorm WarningMPXFaribault, Martin34 min
Jun 14, 9:26 PM CDTAreal Flood AdvisoryMPXGoodhue, Rice, Steele3 hr
Jun 14, 9:34 PM CDTRiver Flood WarningMPXGoodhue7 hr
Jun 14, 10:00 PM CDTFlash Flood WarningMPXDakota, Goodhue, Rice4 hr
Jun 14, 10:22 PM CDTSpecial Weather StatementMPXFaribault, Freeborn53 min
Jun 14, 11:11 PM CDTSpecial Weather StatementMPXFreeborn64 min
Jun 14, 11:52 PM CDTAreal Flood WarningMPXGoodhue6 hr
Jun 15, 1:21 AM CDTAreal Flood AdvisoryMPXFaribault, Freeborn, Steele, Waseca4 hr
Jun 15, 1:38 AM CDTAreal Flood WarningMPXDakota, Goodhue, Rice, Steele4 hr
Jun 15, 5:51 AM CDTAreal Flood WarningMPXDakota, Goodhue, Rice4 hr
Jun 15, 9:31 AM CDTAreal Flood WarningMPXDakota, Goodhue, Rice8 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.