Alert archive / Minnesota / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 37, NWS Twin Cities, MN

June 22, 2015Martin County, Watonwan County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 22, 2015, 5:23 AM CDT for Martin County, Watonwan County, Minnesota. It was in force for 52 min. 5 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 22, 2015, 5:23 AM CDT (10:23 UTC)
Expired: Jun 22, 2015, 6:15 AM CDT
In force: 52 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

Counties Martin County, MN, Watonwan County, MN

The radar

The Minneapolis radar (KMPX), 149 km from the middle of the area, began a volume at 10:23 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.

What was reported inside it

Time	Report	Where	Remark
Jun 22, 5:50 AM CDT	TSTM WND DMG	Sherburn, MN	REPORT AND PHOTO OF A DOWNED TREE CAUSING DAMAGE TO SIDING ON A BUILDING AND A CAR. RELAYED VIA TWITTER.
Jun 22, 5:50 AM CDT	TSTM WND DMG	St James, MN	A DOWNED TREE ON A HOUSE WAS REPORTED.
Jun 22, 6:00 AM CDT	TSTM WND DMG	Fairmont, MN	DAMAGE TO A BOAT AND DOCK WAS REPORTED ALONG WITH ROOF DAMAGE AT A RESIDENCE IN FAIRMONT. MULTIPLE TREES ALSO REPORTED DOWN.
Jun 22, 6:00 AM CDT	TSTM WND DMG	Fairmont, MN	PHOTO OF TREE DOWN ON A HOUSE IN FAIRMONT RECEIVED VIA TWITTER.
Jun 22, 6:07 AM CDT	TSTM WND GST 60	4 Sw Butterfield, MN	EMERGENCY MANAGER REPORTED WINDS OF 50-60 MPH.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jun 22, 2:25 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 10.4 hours before the alert went out and 148 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 10 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 2425 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 97 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.

364 
WUUS53 KMPX 221023
SVRMPX
MNC091-165-221115-
/O.NEW.KMPX.SV.W.0037.150622T1023Z-150622T1115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
523 AM CDT MON JUN 22 2015

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MARTIN COUNTY IN SOUTH CENTRAL MINNESOTA...
  WATONWAN COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 615 AM CDT

* AT 522 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM NEAR REVERE TO HERON LAKE TO NEAR ROUND LAKE...
  MOVING EAST AT 75 MPH.

  HAZARD...70 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...TRAINED WEATHER SPOTTERS. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT CONSIDERABLE 
           TREE DAMAGE. WIND DAMAGE IS ALSO LIKELY TO MOBILE 
           HOMES...ROOFS AND OUTBUILDINGS. 

* SEVERE THUNDERSTORMS WILL BE NEAR...
  TRIMONT AND BUTTERFIELD AROUND 545 AM CDT.
  SHERBURN AROUND 550 AM CDT.
  WELCOME AND CEYLON AROUND 555 AM CDT.
  FAIRMONT...TRUMAN AND LEWISVILLE AROUND 600 AM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
GROGAN...ORMSBY...FOXLAKE...DARFUR...FAIRMONT AIRPORT...ST JAMES
AIRPORT...LA SALLE...ODIN...WILBERT AND SOUTH BRANCH.

THIS INCLUDES INTERSTATE 90 BETWEEN MILE MARKERS 82 AND 106.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

THIS IS A DANGEROUS SITUATION. THESE STORMS ARE PRODUCING WIDESPREAD 
WIND DAMAGE ACROSS SOUTHWEST MINNESOTA! SEEK SHELTER NOW INSIDE A 
STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
 
&&

LAT...LON 4351 9485 4383 9486 4410 9486 4408 9440
      4375 9437 4350 9433
TIME...MOT...LOC 1022Z 263DEG 65KT 4417 9537 4380 9535 4353 9539 

HAIL...1.00IN
WIND...70MPH
 
$$

LS

1 follow-up statement

505 
WWUS53 KMPX 221039
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
539 AM CDT MON JUN 22 2015

MNC091-165-221115-
/O.CON.KMPX.SV.W.0037.000000T0000Z-150622T1115Z/
MARTIN MN-WATONWAN MN-
539 AM CDT MON JUN 22 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 AM CDT
FOR MARTIN AND WATONWAN COUNTIES...

AT 538 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR COMFREY TO NEAR BERGEN TO 6 MILES NORTH OF
SUPERIOR...MOVING EAST AT 80 MPH.

HAZARD...70 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...TRAINED WEATHER SPOTTERS. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT CONSIDERABLE 
         TREE DAMAGE. WIND DAMAGE IS ALSO LIKELY TO MOBILE 
         HOMES...ROOFS AND OUTBUILDINGS. 

THESE SEVERE STORMS WILL BE NEAR...
  TRIMONT AROUND 545 AM CDT.
  CEYLON AROUND 550 AM CDT.
  FAIRMONT AND TRUMAN AROUND 555 AM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
GROGAN...ORMSBY...FOXLAKE...DARFUR...FAIRMONT AIRPORT...ST JAMES
AIRPORT...LA SALLE...ODIN...WILBERT AND SOUTH BRANCH.

THIS INCLUDES INTERSTATE 90 BETWEEN MILE MARKERS 82 AND 106.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

THIS IS A DANGEROUS SITUATION. THESE STORMS ARE PRODUCING WIDESPREAD 
WIND DAMAGE ACROSS SOUTHEASTERN SOUTH DAKOTA AND SOUTHWEST 
MINNESOTA. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY 
FROM WINDOWS.
 
&&

LAT...LON 4351 9485 4383 9486 4410 9486 4408 9440
      4375 9437 4350 9433
TIME...MOT...LOC 1038Z 267DEG 71KT 4416 9494 4379 9492 4352 9497 

HAIL...1.00IN
WIND...70MPH
 
$$

LS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 3:38 AM CDT	Special Weather Statement	MPX	Kanabec	22 min
Jun 22, 3:51 AM CDT	Severe Thunderstorm Warning	MPX	Kanabec	24 min
Jun 22, 4:21 AM CDT	Special Weather Statement	MPX	Redwood	39 min
Jun 22, 4:24 AM CDT	Special Weather Statement	MPX	Blue Earth, Brown, Faribault, Freeborn, Waseca, Watonwan	36 min
Jun 22, 4:56 AM CDT	Special Weather Statement	MPX	Yellow Medicine	34 min
Jun 22, 5:10 AM CDT	Special Weather Statement	MPX	Freeborn, Steele, Waseca	50 min
Jun 22, 5:19 AM CDT	Severe Thunderstorm Warning	MPX	Waseca	26 min
Jun 22, 5:23 AM CDT	Special Weather Statement	MPX	Redwood	112 min
Jun 22, 5:34 AM CDT	Severe Thunderstorm Warning	MPX	Brown, Nicollet, Redwood	41 min
Jun 22, 5:40 AM CDT	Severe Thunderstorm Warning	MPX	Freeborn, Steele, Waseca	50 min
Jun 22, 6:00 AM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Brown, Faribault, Freeborn, Le Sueur, Martin and 4 more	45 min
Jun 22, 6:20 AM CDT	Special Weather Statement	MPX	Dakota	25 min
Jun 22, 6:22 AM CDT	High Wind Warning	MPX	Blue Earth, Brown, Faribault, Freeborn, Le Sueur, Martin and 6 more	5 hr
Jun 22, 6:23 AM CDT	Severe Thunderstorm Warning	MPX	Dakota, Scott	22 min
Jun 22, 6:31 AM CDT	Severe Thunderstorm Warning	MPX	Freeborn, Le Sueur, Rice, Steele, Waseca	59 min
Jun 22, 7:13 AM CDT	Special Weather Statement	MPX	Le Sueur	47 min
Jun 22, 7:16 AM CDT	Wind Advisory	MPX	Anoka, Carver, Chippewa, Dakota, Goodhue, Hennepin and 14 more	4 hr
Jun 22, 7:22 AM CDT	Special Weather Statement	MPX	Freeborn, Steele, Waseca	23 min
Jun 22, 8:12 AM CDT	Special Weather Statement	MPX	Chisago	33 min
Jun 22, 8:29 AM CDT	Special Weather Statement	MPX	Ramsey	31 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2015 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.