Alert archive / Minnesota / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 54, NWS Twin Cities, MN

June 28, 2014McLeod County, Sibley County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 28, 2014, 1:40 PM CDT for McLeod County, Sibley County, 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 28, 2014, 1:40 PM CDT (18:40 UTC)
Expired
Jun 28, 2014, 2:15 PM CDT
In force
35 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

Counties McLeod County, MN, Sibley County, MN

The radar

The Minneapolis radar (KMPX), 70 km from the middle of the area, began a volume at 18:42 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, 6.7 hours before the alert went out and 68 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 2014-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 666 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 12:00Z on 2014-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 212 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
666 J/kg
Mixed-layer CIN
-110 J/kg
Mixed-layer LCL
825 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
212 m²/s²
0-3 km storm-relative helicity
192 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.9

Open this sounding in Storm Lab

The text

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

962 
WUUS53 KMPX 281840
SVRMPX
MNC085-143-281915-
/O.NEW.KMPX.SV.W.0054.140628T1840Z-140628T1915Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
140 PM CDT SAT JUN 28 2014

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN MCLEOD COUNTY IN CENTRAL MINNESOTA...
  WESTERN SIBLEY COUNTY IN CENTRAL MINNESOTA...

* UNTIL 215 PM CDT

* AT 138 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 9 MILES WEST OF
  GAYLORD...AND MOVING NORTH AT 35 MPH.

  HAZARD...60 MPH WIND GUSTS.

  SOURCE...RADAR INDICATED.

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

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  LAKE MARION REGIONAL PARK AROUND 205 PM CDT.
  GLENCOE AROUND 210 PM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE FERNANDO...NEW AUBURN...
BROWNTON...SUMTER AND BISCAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4449 9455 4489 9437 4481 9408 4446 9430
      4446 9443
TIME...MOT...LOC 1840Z 201DEG 32KT 4455 9439

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH

$$
3 follow-up statements
606 
WWUS53 KMPX 281850
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
150 PM CDT SAT JUN 28 2014

MNC085-143-281915-
/O.CON.KMPX.SV.W.0054.000000T0000Z-140628T1915Z/
MCLEOD MN-SIBLEY MN-
150 PM CDT SAT JUN 28 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL SIBLEY
AND SOUTHERN MCLEOD COUNTIES UNTIL 215 PM CDT...

AT 147 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 8 MILES NORTHWEST
OF GAYLORD...AND MOVING NORTH AT 35 MPH.

HAZARD...60 MPH WIND GUSTS.

SOURCE...RADAR INDICATED.

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

THE SEVERE THUNDERSTORM WILL BE NEAR...
  LAKE MARION REGIONAL PARK AROUND 205 PM CDT.
  GLENCOE AROUND 210 PM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE NEW AUBURN...BROWNTON...SUMTER
AND BISCAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4461 9450 4489 9437 4481 9408 4453 9426
TIME...MOT...LOC 1850Z 201DEG 32KT 4463 9434

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH

$$
025 
WWUS53 KMPX 281859
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
159 PM CDT SAT JUN 28 2014

MNC085-143-281915-
/O.CON.KMPX.SV.W.0054.000000T0000Z-140628T1915Z/
MCLEOD MN-SIBLEY MN-
159 PM CDT SAT JUN 28 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTH CENTRAL
SIBLEY AND CENTRAL MCLEOD COUNTIES UNTIL 215 PM CDT...

AT 157 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 8 MILES SOUTHEAST
OF LAKE MARION REGIONAL PARK...AND MOVING NORTH AT 35 MPH.

HAZARD...60 MPH WIND GUSTS.

SOURCE...RADAR INDICATED.

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

THE SEVERE THUNDERSTORM WILL BE NEAR...
  LAKE MARION REGIONAL PARK AROUND 205 PM CDT.
  GLENCOE AROUND 210 PM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE SUMTER AND BISCAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4469 9446 4489 9437 4481 9408 4462 9420
TIME...MOT...LOC 1859Z 201DEG 32KT 4470 9430

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH

$$
196 
WWUS53 KMPX 281906
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
206 PM CDT SAT JUN 28 2014

MNC085-143-281917-
/O.EXP.KMPX.SV.W.0054.000000T0000Z-140628T1915Z/
MCLEOD MN-SIBLEY MN-
206 PM CDT SAT JUN 28 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL SIBLEY AND
CENTRAL MCLEOD COUNTIES WILL EXPIRE AT 215 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
 HOWEVER...GUSTY WINDS ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 4469 9446 4489 9437 4481 9408 4462 9420
TIME...MOT...LOC 1907Z 201DEG 32KT 4477 9426

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 28, 3:05 PM CDTSpecial Weather StatementMPXCarver, Hennepin40 min
Jun 28, 3:30 PM CDTSevere Thunderstorm WarningMPXAnoka, Hennepin, Isanti, Mille Lacs, Sherburne, Wright16 min
Jun 28, 3:41 PM CDTSpecial Weather StatementMPXAnoka34 min
Jun 28, 4:10 PM CDTSpecial Weather StatementMPXChisago50 min
Jun 28, 4:17 PM CDTSpecial Weather StatementMPXChisago43 min
Jun 28, 4:21 PM CDTSpecial Weather StatementMPXAnoka24 min
Jun 28, 5:02 PM CDTSpecial Weather StatementMPXFreeborn43 min
Jun 28, 5:06 PM CDTSpecial Weather StatementMPXAnoka, Ramsey39 min
Jun 28, 5:32 PM CDTSpecial Weather StatementMPXRamsey58 min
Jun 28, 5:40 PM CDTAreal Flood WarningMPXAnoka, Chisago, Dakota, Hennepin, Ramsey, Washington6 hr
Jun 28, 6:18 PM CDTSpecial Weather StatementMPXChisago, Washington117 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.