Alert archive / Minnesota / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 23, NWS Twin Cities, MN

May 11, 2014Blue Earth County, Le Sueur County, Nicollet County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 11, 2014, 9:08 PM CDT for Blue Earth County, Le Sueur County, Nicollet County, Minnesota. It was in force for 52 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
May 11, 2014, 9:08 PM CDT (02:08 UTC)
Expired
May 11, 2014, 10:00 PM CDT
In force
52 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
0.88 in
Wind
60.0 mph

Counties Blue Earth County, MN, Le Sueur County, MN, Nicollet County, MN

The radar

The Minneapolis radar (KMPX), 84 km from the middle of the area, began a volume at 02:08 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 nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 2.1 hours before the alert went out and 83 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 2014-05-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2014-05-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1686 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
145 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

079 
WUUS53 KMPX 120208
SVRMPX
MNC013-079-103-120300-
/O.NEW.KMPX.SV.W.0023.140512T0208Z-140512T0300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
908 PM CDT SUN MAY 11 2014

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BLUE EARTH COUNTY IN SOUTH CENTRAL MINNESOTA...
  SOUTHWESTERN LE SUEUR COUNTY IN SOUTH CENTRAL MINNESOTA...
  EASTERN NICOLLET COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 1000 PM CDT

* AT 903 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 7 MILES SOUTHEAST OF MADELIA TO 10 MILES SOUTH OF
  MINNEOPA STATE PARK TO 14 MILES SOUTH OF MANKATO...AND MOVING NORTH
  AT 45 MPH.

  HAZARD...60 MPH WIND GUSTS AND NICKEL SIZE HAIL.

  SOURCE...RADAR INDICATED.

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.

* LOCATIONS IMPACTED INCLUDE...
  MANKATO...ST PETER...MINNEOPA STATE PARK...LAKE CRYSTAL...ST
  CLAIR...SKYLINE...NORTH MANKATO...EAGLE LAKE...MADISON LAKE...
  MANKATO AIRPORT...NICOLLET...KASOTA...LAKE JEFFERSON...CLEVELAND...
  OTTAWA...NORSELAND...ST HENRY AND LE SUEUR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4392 9414 4395 9433 4446 9433 4446 9393
      4447 9391 4434 9371 4388 9393
TIME...MOT...LOC 0208Z 187DEG 37KT 4406 9429 4407 9411
          4401 9394

HAIL...0.88IN
WIND...60MPH

$$

JRB
5 follow-up statements
872 
WWUS53 KMPX 120213
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
913 PM CDT SUN MAY 11 2014

MNC013-079-103-120300-
/O.CON.KMPX.SV.W.0023.000000T0000Z-140512T0300Z/
LE SUEUR MN-NICOLLET MN-BLUE EARTH MN-
913 PM CDT SUN MAY 11 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN BLUE
EARTH...EASTERN NICOLLET AND SOUTHWESTERN LE SUEUR COUNTIES UNTIL
1000 PM CDT...

AT 913 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 7 MILES WEST OF MINNEOPA STATE PARK TO MINNEOPA STATE
PARK TO 6 MILES SOUTHEAST OF MANKATO...AND MOVING NORTH AT 40 MPH.

HAZARD...60 MPH WIND GUSTS AND NICKEL SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.

LOCATIONS IMPACTED INCLUDE...
ST PETER...MANKATO AIRPORT...MADISON LAKE...NICOLLET...KASOTA...LAKE
JEFFERSON...CLEVELAND...OTTAWA...NORSELAND...ST HENRY AND LE SUEUR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4404 9409 4403 9433 4446 9433 4446 9393
      4447 9391 4434 9371 4396 9389
TIME...MOT...LOC 0214Z 196DEG 36KT 4419 9423 4420 9405
          4414 9388

HAIL...0.88IN
WIND...60MPH

$$

JRB
246 
WWUS53 KMPX 120219
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
919 PM CDT SUN MAY 11 2014

MNC013-079-103-120300-
/O.CON.KMPX.SV.W.0023.000000T0000Z-140512T0300Z/
LE SUEUR MN-NICOLLET MN-BLUE EARTH MN-
919 PM CDT SUN MAY 11 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN BLUE
EARTH...EASTERN NICOLLET AND SOUTHWESTERN LE SUEUR COUNTIES UNTIL
1000 PM CDT...

AT 917 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 7 MILES NORTHWEST OF MINNEOPA STATE PARK TO MANKATO TO
6 MILES EAST OF MANKATO...AND MOVING NORTH AT 40 MPH.

HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.

LOCATIONS IMPACTED INCLUDE...
ST PETER...MADISON LAKE...NICOLLET...KASOTA...LAKE JEFFERSON...
CLEVELAND...OTTAWA...NORSELAND...ST HENRY AND LE SUEUR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4417 9406 4417 9432 4446 9433 4446 9393
      4447 9391 4434 9371 4409 9383
TIME...MOT...LOC 0219Z 196DEG 36KT 4424 9421 4425 9403
          4419 9386

HAIL...0.75IN
WIND...60MPH

$$

JRB
649 
WWUS53 KMPX 120226
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
926 PM CDT SUN MAY 11 2014

MNC013-120236-
/O.CAN.KMPX.SV.W.0023.000000T0000Z-140512T0300Z/
BLUE EARTH MN-
926 PM CDT SUN MAY 11 2014

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

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE 
WARNED AREA.

LAT...LON 4424 9378 4424 9383 4427 9403 4425 9431
      4446 9433 4446 9393 4447 9391 4434 9371
      4423 9376
TIME...MOT...LOC 0226Z 196DEG 36KT 4431 9418 4432 9400
          4426 9383

$$

MNC079-103-120300-
/O.CON.KMPX.SV.W.0023.000000T0000Z-140512T0300Z/
LE SUEUR MN-NICOLLET MN-
926 PM CDT SUN MAY 11 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN
NICOLLET AND SOUTHWESTERN LE SUEUR COUNTIES UNTIL 1000 PM CDT...

AT 922 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 9 MILES NORTHWEST OF MINNEOPA STATE PARK TO ST PETER
TO 8 MILES NORTHEAST OF MANKATO...AND MOVING NORTH AT 40 MPH.

HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.

LOCATIONS IMPACTED INCLUDE...
ST PETER...LAKE JEFFERSON...CLEVELAND...OTTAWA...NORSELAND...ST HENRY
AND LE SUEUR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4424 9378 4424 9383 4427 9403 4425 9431
      4446 9433 4446 9393 4447 9391 4434 9371
      4423 9376
TIME...MOT...LOC 0226Z 196DEG 36KT 4431 9418 4432 9400
          4426 9383

HAIL...0.75IN
WIND...60MPH

$$

JRB
966 
WWUS53 KMPX 120237
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
937 PM CDT SUN MAY 11 2014

MNC079-103-120300-
/O.CON.KMPX.SV.W.0023.000000T0000Z-140512T0300Z/
LE SUEUR MN-NICOLLET MN-
937 PM CDT SUN MAY 11 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
NICOLLET AND WEST CENTRAL LE SUEUR COUNTIES UNTIL 1000 PM CDT...

AT 936 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 10 MILES NORTHWEST OF ST PETER TO 6 MILES NORTH OF ST
PETER TO LE CENTER...AND MOVING NORTH AT 40 MPH.

HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.

LOCATIONS IMPACTED INCLUDE...
NORSELAND...ST HENRY AND LE SUEUR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4431 9376 4433 9398 4433 9432 4446 9433
      4446 9393 4447 9391 4434 9371
TIME...MOT...LOC 0237Z 196DEG 36KT 4442 9414 4443 9396
          4437 9379

HAIL...0.75IN
WIND...60MPH

$$
SPD
157 
WWUS53 KMPX 120245
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
945 PM CDT SUN MAY 11 2014

MNC079-103-120254-
/O.CAN.KMPX.SV.W.0023.000000T0000Z-140512T0300Z/
LE SUEUR MN-NICOLLET MN-
945 PM CDT SUN MAY 11 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN NICOLLET AND WEST
CENTRAL LE SUEUR COUNTIES IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED
OUT OF THE WARNED AREA.

LAT...LON 4431 9376 4433 9398 4433 9432 4446 9433
      4446 9393 4447 9391 4434 9371
TIME...MOT...LOC 0244Z 196DEG 36KT 4449 9411 4450 9393
          4444 9376

$$

SPD

The office that day

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

IssuedProductOfficeCountiesLasted
May 11, 8:40 PM CDTSpecial Weather StatementMPXBlue Earth50 min
May 11, 10:21 PM CDTSpecial Weather StatementMPXSteele39 min
May 12, 12:31 AM CDTSpecial Weather StatementMPXRice44 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2014Every severe thunderstorm warning in 2014

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.