Alert archive / Minnesota / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 32, NWS Twin Cities, MN

June 20, 2015Brown County, Redwood County, Yellow Medicine County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 20, 2015, 3:59 AM CDT for Brown County, Redwood County, Yellow Medicine County, Minnesota. It was in force for 46 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 20, 2015, 3:59 AM CDT (08:59 UTC)
Expired
Jun 20, 2015, 4:45 AM CDT
In force
46 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Brown County, MN, Redwood County, MN, Yellow Medicine County, MN

The radar

The Minneapolis radar (KMPX), 140 km from the middle of the area, began a volume at 09:02 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 20, 3:18 AM CDTSevere Thunderstorm WatchSPC3 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 9.0 hours before the alert went out and 138 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 2015-06-20Temperature 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 2015-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 109 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
1595 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
109 m²/s²
0-3 km storm-relative helicity
358 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.

980 
WUUS53 KMPX 200859
SVRMPX
MNC015-127-173-200945-
/O.NEW.KMPX.SV.W.0032.150620T0859Z-150620T0945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
359 AM CDT SAT JUN 20 2015

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN YELLOW MEDICINE COUNTY IN WEST CENTRAL MINNESOTA...
  WESTERN BROWN COUNTY IN SOUTH CENTRAL MINNESOTA...
  REDWOOD COUNTY IN SOUTHWESTERN MINNESOTA...

* UNTIL 445 AM CDT

* AT 358 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM NEAR GHENT TO NEAR WILMONT...MOVING EAST AT 70 MPH.

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

  SOURCE...RADAR INDICATED. 

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

* SEVERE THUNDERSTORMS WILL BE NEAR...
  WOOD LAKE AROUND 410 AM CDT.
  ECHO AROUND 415 AM CDT.
  REDWOOD FALLS AROUND 430 AM CDT.
  MORTON AROUND 435 AM CDT.
  FRANKLIN AROUND 440 AM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
WANDA...REVERE...VESTA...DELHI...MILROY...SEAFORTH...CLEMENTS...NORTH
REDWOOD...BELVIEW AND REDWOOD FALLS AIRPORT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4476 9548 4470 9538 4469 9532 4466 9529
      4467 9525 4457 9509 4452 9488 4449 9485
      4411 9486 4411 9509 4419 9510 4420 9512
      4420 9559 4462 9561 4464 9586
TIME...MOT...LOC 0858Z 264DEG 59KT 4453 9582 4374 9573 

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

JRB
3 follow-up statements
566 
WWUS53 KMPX 200916
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
416 AM CDT SAT JUN 20 2015

MNC015-127-173-200945-
/O.CON.KMPX.SV.W.0032.000000T0000Z-150620T0945Z/
YELLOW MEDICINE MN-BROWN MN-REDWOOD MN-
416 AM CDT SAT JUN 20 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 AM CDT
FOR SOUTHEASTERN YELLOW MEDICINE...WESTERN BROWN AND REDWOOD
COUNTIES...

AT 416 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR ECHO TO NEAR SANBORN...MOVING EAST AT 60 MPH.

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

SOURCE...RADAR INDICATED. 

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

THESE SEVERE STORMS WILL BE NEAR...
  SPRINGFIELD AROUND 425 AM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
WANDA...REVERE...VESTA...DELHI...MILROY...SEAFORTH...CLEMENTS...NORTH
REDWOOD...BELVIEW AND REDWOOD FALLS AIRPORT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4476 9548 4470 9538 4469 9532 4466 9529
      4467 9525 4457 9509 4452 9488 4449 9485
      4411 9486 4411 9509 4419 9510 4420 9512
      4420 9559 4462 9561 4464 9586
TIME...MOT...LOC 0916Z 249DEG 51KT 4468 9539 4422 9517 

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

JRB
609 
WWUS53 KMPX 200930
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
430 AM CDT SAT JUN 20 2015

MNC015-127-173-200945-
/O.CON.KMPX.SV.W.0032.000000T0000Z-150620T0945Z/
YELLOW MEDICINE MN-BROWN MN-REDWOOD MN-
430 AM CDT SAT JUN 20 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 AM CDT
FOR SOUTHEASTERN YELLOW MEDICINE...WESTERN BROWN AND EASTERN REDWOOD
COUNTIES...

AT 430 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 6 MILES SOUTH OF RENVILLE TO SPRINGFIELD...MOVING EAST
AT 55 MPH.

HAZARD...60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

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

THESE SEVERE THUNDERSTORMS WILL REMAIN OVER MAINLY RURAL AREAS OF
SOUTHEASTERN YELLOW MEDICINE...WESTERN BROWN AND EASTERN REDWOOD
COUNTIES...INCLUDING THE FOLLOWING LOCATIONS...CLEMENTS...NORTH
REDWOOD...BELVIEW...REDWOOD FALLS AIRPORT...DELHI...SANBORN AND
COBDEN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4476 9548 4470 9538 4469 9532 4466 9529
      4467 9525 4457 9509 4452 9488 4449 9485
      4411 9486 4411 9509 4419 9510 4420 9512
      4446 9527 4462 9561
TIME...MOT...LOC 0930Z 258DEG 47KT 4470 9522 4424 9500 

HAIL...<.75IN
WIND...60MPH
 
$$

JRB
616 
WWUS53 KMPX 200938
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
438 AM CDT SAT JUN 20 2015

MNC015-127-173-200947-
/O.EXP.KMPX.SV.W.0032.000000T0000Z-150620T0945Z/
YELLOW MEDICINE MN-BROWN MN-REDWOOD MN-
438 AM CDT SAT JUN 20 2015

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN YELLOW
MEDICINE...WESTERN BROWN AND EASTERN REDWOOD COUNTIES WILL EXPIRE AT
445 AM CDT...
    
THE STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 600 AM CDT FOR
SOUTHWESTERN MINNESOTA.

LAT...LON 4476 9548 4470 9538 4469 9532 4466 9529
      4467 9525 4457 9509 4452 9488 4449 9485
      4411 9486 4411 9509 4419 9510 4420 9512
      4446 9527 4462 9561
TIME...MOT...LOC 0936Z 264DEG 59KT 4470 9522 4424 9500 

$$

JRB

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 19, 10:40 PM CDTSpecial Weather StatementMPXMartin50 min
Jun 20, 4:06 AM CDTSpecial Weather StatementMPXLac qui Parle, Yellow Medicine24 min
Jun 20, 4:14 AM CDTSevere Thunderstorm WarningMPXRenville, Sibley46 min
Jun 20, 4:26 AM CDTSevere Thunderstorm WarningMPXBrown, Nicollet, Watonwan34 min
Jun 20, 4:35 AM CDTSpecial Weather StatementMPXMartin25 min
Jun 20, 4:44 AM CDTSpecial Weather StatementMPXMcLeod, Sibley31 min
Jun 20, 4:46 AM CDTSpecial Weather StatementMPXKandiyohi, Meeker, Sherburne, Wright119 min
Jun 20, 4:54 AM CDTSpecial Weather StatementMPXBlue Earth, Nicollet36 min
Jun 20, 5:05 AM CDTSpecial Weather StatementMPXFaribault40 min
Jun 20, 5:40 AM CDTSpecial Weather StatementMPXFreeborn35 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2015Every severe thunderstorm warning in 2015

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.