Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 81, NWS Twin Cities, MN

June 17, 2011Chippewa County, Lac qui Parle County, Swift County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 17, 2011, 9:33 PM CDT for Chippewa County, Lac qui Parle County, Swift County, Minnesota. It was in force for 57 min. 2 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 17, 2011, 9:33 PM CDT (02:33 UTC)
Expired: Jun 17, 2011, 10:30 PM CDT
In force: 57 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Chippewa County, MN, Lac qui Parle County, MN, Swift County, MN

The radar

The Sioux Falls radar (KFSD), 187 km from the middle of the area, began a volume at 02:35 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 17, 9:35 PM CDT	HAIL 1	4 N Cerro Gordo, MN
Jun 17, 9:36 PM CDT	HAIL 0.75	2 Wnw Appleton, MN

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 17, 7:22 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 2.6 hours before the alert went out and 187 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: 1159 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 1224 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 92 m²/s²
0-3 km storm-relative helicity: 187 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 4.4

Open this sounding in Storm Lab

The text

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

447 
WUUS53 KMPX 180233
SVRMPX
MNC023-073-151-180330-
/O.NEW.KMPX.SV.W.0081.110618T0233Z-110618T0330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
933 PM CDT FRI JUN 17 2011

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN CHIPPEWA COUNTY IN WEST CENTRAL MINNESOTA...
  EASTERN LAC QUI PARLE COUNTY IN WEST CENTRAL MINNESOTA...
  WESTERN SWIFT COUNTY IN WEST CENTRAL MINNESOTA...

* UNTIL 1030 PM CDT

* AT 928 PM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...
  CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS
  OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 6
  MILES NORTHEAST OF CORRELL TO LOUISBURG TO MADISON...AND MOVING
  EAST AT 25 MPH.

  AT 925 PM...QUARTER SIZE HAIL WAS REPORTED 4 MILES NORTH OF        
  MADISON. 

LOCATIONS IN THE WARNING INCLUDE...
  MONTEVIDEO...
  BENSON...
  APPLETON...
  HOLLOWAY...
  MILAN...
  BIG BEND CITY...
  WATSON...
  DANVERS...
  CLONTARF...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS IN EXCESS OF 60 MPH AND LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 AM CDT SATURDAY MORNING
FOR SOUTHWESTERN MINNESOTA.

&&

LAT...LON 4519 9615 4520 9612 4539 9613 4539 9557
      4513 9558 4492 9562 4494 9619
TIME...MOT...LOC 0230Z 269DEG 20KT 4531 9607 4513 9607
          4497 9610
WIND...HAIL 60MPH 1.00IN

$$

1 follow-up statement

078 
WWUS53 KMPX 180257
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
957 PM CDT FRI JUN 17 2011

MNC023-073-151-180330-
/O.CON.KMPX.SV.W.0081.000000T0000Z-110618T0330Z/
SWIFT MN-LAC QUI PARLE MN-CHIPPEWA MN-
957 PM CDT FRI JUN 17 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WESTERN
CHIPPEWA...EAST CENTRAL LAC QUI PARLE AND CENTRAL SWIFT COUNTIES IN
WEST CENTRAL MINNESOTA UNTIL 1030 PM CDT...

AT 956 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG
A LINE EXTENDING FROM HOLLOWAY TO MILAN TO 5 MILES SOUTHWEST OF
WATSON...MOVING EAST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
  MONTEVIDEO...BENSON...BIG BEND CITY...WATSON...DANVERS AND
  CLONTARF.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

LAT...LON 4516 9597 4521 9599 4539 9599 4539 9557
      4513 9558 4492 9562 4494 9599
TIME...MOT...LOC 0257Z 269DEG 20KT 4531 9586 4513 9586
          4497 9589
WIND...HAIL 60MPH 1.00IN

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 7:00 PM CDT	Tornado Warning	MPX	Kandiyohi	22 min
Jun 17, 7:04 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi	26 min
Jun 17, 7:50 PM CDT	Severe Thunderstorm Warning	MPX	Faribault, Martin	55 min
Jun 17, 7:57 PM CDT	Areal Flood Advisory	MPX	Kandiyohi	3 hr
Jun 17, 7:57 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi	33 min
Jun 17, 8:18 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi	27 min
Jun 17, 8:25 PM CDT	Areal Flood Warning	MPX	Kandiyohi	6 hr
Jun 17, 8:47 PM CDT	Special Weather Statement	MPX	Big Stone	58 min
Jun 17, 9:55 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Lac qui Parle, Yellow Medicine	35 min
Jun 17, 10:09 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Scott, Sibley	66 min
Jun 17, 10:22 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Kandiyohi, Renville, Swift, Yellow Medicine	53 min
Jun 17, 10:42 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Scott, Sibley	48 min
Jun 17, 11:25 PM CDT	Special Weather Statement	MPX	Kandiyohi, Meeker, Stearns	65 min
Jun 17, 11:34 PM CDT	Special Weather Statement	MPX	Dakota	56 min
Jun 18, 12:09 AM CDT	Special Weather Statement	MPX	Benton, Meeker, Stearns	51 min
Jun 18, 12:21 AM CDT	Severe Thunderstorm Warning	MPX	Benton, Morrison, Sherburne, Stearns	54 min
Jun 18, 6:38 AM CDT	Special Weather Statement	MPX	Dakota	37 min
Jun 18, 11:58 AM CDT	Flood Watch	MPX	Anoka, Blue Earth, Brown, Carver, Chisago, Dakota and 14 more	20 hr
Jun 18, 3:46 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	44 min
Jun 18, 4:28 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	47 min
Jun 18, 5:22 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	53 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2011 Every severe thunderstorm warning in 2011

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.