Alert archive / Minnesota / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 42, NWS Twin Cities, MN

June 22, 20155 counties in Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 22, 2015, 6:31 AM CDT for 5 counties in Minnesota. It was in force for 59 min. 1 report 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, 6:31 AM CDT (11:31 UTC)
Expired: Jun 22, 2015, 7:30 AM CDT
In force: 59 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

Counties Freeborn County, MN, Le Sueur County, MN, Rice County, MN, Steele County, MN, Waseca County, MN

The radar

The Minneapolis radar (KMPX), 92 km from the middle of the area, began a volume at 11:30 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, 6:46 AM CDT	TSTM WND DMG	Albert Lea, MN	DOWNED TREE PHOTO RELAYED VIA TWITTER.

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, 11.5 hours before the alert went out and 92 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.

949 
WUUS53 KMPX 221131
SVRMPX
MNC047-079-131-147-161-221230-
/O.NEW.KMPX.SV.W.0042.150622T1131Z-150622T1230Z/

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

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  STEELE COUNTY IN SOUTH CENTRAL MINNESOTA...
  FREEBORN COUNTY IN SOUTH CENTRAL MINNESOTA...
  WASECA COUNTY IN SOUTH CENTRAL MINNESOTA...
  RICE COUNTY IN SOUTH CENTRAL MINNESOTA...
  SOUTHERN LE SUEUR COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 730 AM CDT

* AT 631 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM ST THOMAS TO NEAR WALDORF TO NEAR MANSFIELD...MOVING
  EAST AT 70 MPH.

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

  SOURCE...RADAR INDICATED. 

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

* LOCATIONS IMPACTED INCLUDE...
  OWATONNA...FARIBAULT...NORTHFIELD...ALBERT LEA...WASECA...
  MONTGOMERY...LE CENTER...JANESVILLE...BLOOMING PRAIRIE...
  WATERVILLE...DUNDAS AND MEDFORD.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 35 BETWEEN MILE MARKERS 1 AND 66.
 INTERSTATE 90 BETWEEN MILE MARKERS 143 AND 173.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

LAT...LON 4350 9365 4385 9365 4424 9377 4434 9393
      4439 9396 4443 9393 4444 9304 4350 9306
TIME...MOT...LOC 1131Z 270DEG 61KT 4441 9380 4396 9367 4353 9363 

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

LS

1 follow-up statement

152 
WWUS53 KMPX 221159
SVSMPX

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

MNC047-079-131-147-161-221230-
/O.CON.KMPX.SV.W.0042.000000T0000Z-150622T1230Z/
STEELE MN-FREEBORN MN-WASECA MN-RICE MN-LE SUEUR MN-
659 AM CDT MON JUN 22 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 AM CDT
FOR STEELE...FREEBORN...WASECA...RICE AND SOUTHERN LE SUEUR
COUNTIES...

AT 657 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM BRIDGEWATER TO BIXBY TO RIVERBEND CAMPGROUND...MOVING
EAST AT 70 MPH.

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

SOURCE...LAW ENFORCEMENT. A WIND GUST OF 56 MPH WAS REPORTED SOUTH 
         OF FARIBAULT WITH THIS LINE OF STORMS. 

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

LOCATIONS IMPACTED INCLUDE...
OWATONNA...FARIBAULT...NORTHFIELD...ALBERT LEA...WASECA...
MONTGOMERY...LE CENTER...JANESVILLE...BLOOMING PRAIRIE...
WATERVILLE...DUNDAS AND MEDFORD.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 35 BETWEEN MILE MARKERS 1 AND 66.
 INTERSTATE 90 BETWEEN MILE MARKERS 143 AND 173.

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 SOUTHERN MINNESOTA. SEEK SHELTER NOW INSIDE A 
STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
 
&&

LAT...LON 4350 9365 4385 9365 4424 9377 4434 9393
      4439 9396 4443 9393 4444 9304 4350 9306
TIME...MOT...LOC 1157Z 270DEG 61KT 4441 9320 4396 9308 4353 9304 

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, 5:23 AM CDT	Severe Thunderstorm Warning	MPX	Martin, Watonwan	52 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, 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.