Alert archive / Minnesota / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 42, NWS Twin Cities, MN

June 12, 2013Freeborn County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 12, 2013, 5:58 PM CDT for Freeborn County, Minnesota. It was in force for 32 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 12, 2013, 5:58 PM CDT (22:58 UTC)
Expired
Jun 12, 2013, 6:30 PM CDT
In force
32 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Freeborn County, MN

The radar

The Minneapolis radar (KMPX), 146 km from the middle of the area, began a volume at 23:00 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 12:00Z, 11.0 hours before the alert went out and 147 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 12:00Z on 2013-06-12Temperature 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 12:00Z on 2013-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 square meters per square second.193958Sfc1 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
912 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
52 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

765 
WUUS53 KMPX 122258
SVRMPX
MNC047-122330-
/O.NEW.KMPX.SV.W.0042.130612T2258Z-130612T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
558 PM CDT WED JUN 12 2013

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN FREEBORN COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 630 PM CDT

* AT 556 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 7 MILES SOUTHEAST OF HAYWARD TO 6 MILES NORTHEAST OF
  NORTHWOOD TO NORTHWOOD...AND MOVING SOUTHEAST AT 20 MPH.

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

  SOURCE...RADAR INDICATED.

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
           ROOFS...SIDING AND TREES.

* LOCATIONS IMPACTED INCLUDE...
  LONDON AND MYRTLE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4350 9335 4366 9329 4371 9305 4349 9304
      4349 9317
TIME...MOT...LOC 2257Z 298DEG 17KT 4360 9312 4352 9316
          4346 9321

HAIL...1.00IN
WIND...60MPH

$$

JRB
2 follow-up statements
349 
WWUS53 KMPX 122314
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
614 PM CDT WED JUN 12 2013

MNC047-122330-
/O.CON.KMPX.SV.W.0042.000000T0000Z-130612T2330Z/
FREEBORN MN-
614 PM CDT WED JUN 12 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
FREEBORN COUNTY UNTIL 630 PM CDT...

AT 612 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 6 MILES NORTHWEST OF LYLE TO 7 MILES WEST OF LYLE TO
NORTHWOOD...AND MOVING SOUTHEAST AT 20 MPH.

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

SOURCE...RADAR INDICATED.

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
         ROOFS...SIDING AND TREES.

LOCATIONS IMPACTED INCLUDE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4350 9330 4360 9325 4364 9305 4349 9304
      4349 9317
TIME...MOT...LOC 2314Z 298DEG 17KT 4356 9302 4348 9306
          4342 9311

HAIL...1.00IN
WIND...60MPH

$$

JRB
672 
WWUS53 KMPX 122326
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
626 PM CDT WED JUN 12 2013

MNC047-122336-
/O.EXP.KMPX.SV.W.0042.000000T0000Z-130612T2330Z/
FREEBORN MN-
626 PM CDT WED JUN 12 2013

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN FREEBORN COUNTY
WILL EXPIRE AT 630 PM CDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE
WARNED AREA.  HOWEVER...HEAVY RAIN IS STILL POSSIBLE WITH THESE
THUNDERSTORMS.

LAT...LON 4350 9330 4360 9325 4364 9305 4349 9304
      4349 9317
TIME...MOT...LOC 2326Z 298DEG 17KT 4353 9295 4345 9299
          4339 9304

$$

JRB

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 12, 5:39 AM CDTSpecial Weather StatementMPXLac qui Parle66 min
Jun 12, 6:02 AM CDTSevere Thunderstorm WarningMPXChippewa, Lac qui Parle, Swift, Yellow Medicine58 min
Jun 12, 8:07 AM CDTAreal Flood AdvisoryMPXCarver, Dakota, Hennepin, McLeod, Scott, Sibley3 hr
Jun 12, 8:20 AM CDTSpecial Weather StatementMPXRice40 min
Jun 12, 9:06 AM CDTSpecial Weather StatementMPXGoodhue39 min
Jun 12, 10:54 AM CDTAreal Flood AdvisoryMPXCarver, Scott, Sibley3 hr
Jun 12, 3:45 PM CDTSevere Thunderstorm WarningMPXBlue Earth45 min
Jun 12, 4:11 PM CDTSevere Thunderstorm WarningMPXFaribault, Freeborn, Waseca49 min
Jun 12, 4:54 PM CDTSevere Thunderstorm WarningMPXFaribault, Freeborn66 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2013Every severe thunderstorm warning in 2013

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.