Alert archive / Minnesota / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 68, NWS Twin Cities, MN

May 31, 20084 counties in Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 31, 2008, 3:08 PM CDT for 4 counties in Minnesota. It was in force for 67 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: May 31, 2008, 3:08 PM CDT (20:08 UTC)
Expired: May 31, 2008, 4:15 PM CDT
In force: 67 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon

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

The radar

The Minneapolis radar (KMPX), 77 km from the middle of the area, began a volume at 20:09 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
May 31, 3:10 PM CDT	TSTM WND DMG	5 Se Faribault, MN	LARGE TREE DOWN ACROSS ROAD.
May 31, 3:21 PM CDT	HAIL 0.75	3 Sw Morristown, MN
May 31, 3:24 PM CDT	HAIL 0.75	5 Nw Waterville, MN
May 31, 3:24 PM CDT	HAIL 0.75	7 Ne Janesville, MN
May 31, 3:58 PM CDT	HAIL 1	Waseca, 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
May 31, 2:51 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 8.1 hours before the alert went out and 78 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: 16 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 722 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 7 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.

000 
WUUS53 KMPX 312009
SVRMPX
MNC079-131-147-161-312115-
/O.NEW.KMPX.SV.W.0068.080531T2008Z-080531T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
308 PM CDT SAT MAY 31 2008

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

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

* UNTIL 415 PM CDT

* AT 305 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM...
  CAPABLE OF PRODUCING PENNY SIZE HAIL.  THIS STORM WAS LOCATED 3
  MILES NORTH OF WATERVILLE...AND MOVING SOUTHEAST AT 26 MPH.

* LOCATIONS IMPACTED INCLUDE...
  WATERVILLE...
  MORRISTOWN...
  FARIBAULT...
  WASECA...
  MEDFORD...
  NEW RICHLAND...
  OWATONNA...
  ELLENDALE...

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

REPORT ANY DAMAGE TO YOUR LOCAL EMERGENCY MANAGER...OR THE NEAREST
LAW ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER SERVICE.

LAT...LON 4421 9378 4425 9377 4443 9358 4429 9305
      4385 9306 4385 9347
TIME...MOT...LOC 2008Z 311DEG 23KT 4426 9357

$$

4 follow-up statements

000 
WWUS53 KMPX 312019
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
316 PM CDT SAT MAY 31 2008

MNC079-131-147-161-312115-
/O.CON.KMPX.SV.W.0068.000000T0000Z-080531T2115Z/
LE SUEUR MN-RICE MN-WASECA MN-STEELE MN-
316 PM CDT SAT MAY 31 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM CDT
FOR STEELE...NORTHEASTERN WASECA...SOUTHERN RICE AND SOUTHEASTERN LE
SUEUR COUNTIES...

AT 313 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A LINE OF SEVERE
THUNDERSTORMS...CAPABLE OF PRODUCING PENNY SIZE HAIL.  THESE SEVERE
THUNDERSTORMS WERE LOCATED ALONG A LINE EXTENDING FROM 4 MILES SOUTH
OF RUSKIN TO MORRISTOWN TO 4 MILES WEST OF KILKENNY...AND MOVING
SOUTHEAST AT 26 MPH.

OTHER STORMS WERE LOCATED ABOUT 3 MILES NORTHEAST OF JANESVILLE AND 
5 MILES SOUTH OF OWATONNA.  
   
OTHER LOCATIONS IN THE WARNING INCLUDE WARSAW...STEELE CENTER...
RUSKIN...MOLAND...MERTON...GREENLAND...DEERFIELD...CLINTON FALLS...
BIXBY AND WATERVILLE.

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

REPORT ANY DAMAGE TO YOUR LOCAL EMERGENCY MANAGER...OR THE NEAREST
LAW ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER SERVICE.

LAT...LON 4421 9378 4425 9377 4443 9358 4429 9305
      4385 9306 4385 9347
TIME...MOT...LOC 2016Z 311DEG 23KT 4420 9312 4423 9342
          4430 9363

$$

000 
WWUS53 KMPX 312032
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
331 PM CDT SAT MAY 31 2008

MNC079-131-147-161-312115-
/O.CON.KMPX.SV.W.0068.000000T0000Z-080531T2115Z/
LE SUEUR MN-RICE MN-WASECA MN-STEELE MN-
331 PM CDT SAT MAY 31 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM CDT
FOR STEELE...NORTHEASTERN WASECA...SOUTHERN RICE AND SOUTHEASTERN LE
SUEUR COUNTIES...

AT 324 PM CDT...DIME SIZE HAIL WAS REPORTED 6 MILES NORTHWEST OF 
WATERVILLE WITH THIS STORM.

AT 326 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM...CAPABLE OF PRODUCING PENNY SIZE HAIL.  THIS SEVERE
THUNDERSTORM WAS LOCATED 5 MILES SOUTHWEST OF KILKENNY...OR ABOUT 6
MILES NORTHWEST OF WATERVILLE...AND MOVING SOUTHEAST AT 25 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE WARSAW...STEELE CENTER...
RUSKIN...MOLAND...MERTON...GREENLAND...DEERFIELD...CLINTON FALLS...
BIXBY AND WATERVILLE.

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

REPORT ANY DAMAGE TO YOUR LOCAL EMERGENCY MANAGER...OR THE NEAREST
LAW ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER SERVICE.

LAT...LON 4421 9378 4425 9377 4443 9358 4429 9305
      4385 9306 4385 9347
TIME...MOT...LOC 2031Z 305DEG 19KT 4426 9362

$$

000 
WWUS53 KMPX 312052
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
349 PM CDT SAT MAY 31 2008

MNC079-131-147-161-312115-
/O.CON.KMPX.SV.W.0068.000000T0000Z-080531T2115Z/
LE SUEUR MN-RICE MN-WASECA MN-STEELE MN-
349 PM CDT SAT MAY 31 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM CDT
FOR STEELE...NORTHEASTERN WASECA...SOUTHERN RICE AND SOUTHEASTERN 
LE SUEUR COUNTIES...

AT 347 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A LINE OF SEVERE 
THUNDERSTORMS...CAPABLE OF PRODUCING PENNY SIZE HAIL AND DAMAGING WIND.  
THESE SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE EXTENDING FROM 
BIXBY TO ELYSIAN...AND MOVING SOUTHEAST AT 25 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE WARSAW...STEELE CENTER...
RUSKIN...MOLAND...MERTON...GREENLAND...DEERFIELD...CLINTON FALLS...
BIXBY AND WATERVILLE.

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

REPORT ANY DAMAGE TO YOUR LOCAL EMERGENCY MANAGER...OR THE NEAREST
LAW ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER SERVICE.

LAT...LON 4421 9378 4425 9377 4443 9358 4429 9305
      4385 9306 4385 9347
TIME...MOT...LOC 2049Z 305DEG 19KT 4394 9306 4418 9366

$$

000 
WWUS53 KMPX 312100
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
358 PM CDT SAT MAY 31 2008

MNC079-131-147-161-312115-
/O.CON.KMPX.SV.W.0068.000000T0000Z-080531T2115Z/
LE SUEUR MN-RICE MN-WASECA MN-STEELE MN-
358 PM CDT SAT MAY 31 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM CDT
FOR STEELE...NORTHEASTERN WASECA...SOUTHERN RICE AND SOUTHEASTERN 
LE SUEUR COUNTIES...

AT 356 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A LINE OF SEVERE
THUNDERSTORMS...CAPABLE OF PRODUCING PENNY SIZE HAIL.  THESE SEVERE
THUNDERSTORMS WERE LOCATED ALONG A LINE EXTENDING FROM 3 MILES
NORTHEAST OF STEELE CENTER TO WASECA TO GREENLAND...AND MOVING
SOUTHEAST AT 25 MPH.

AT 358 PM CDT...ONE INCH HAIL WAS REPORTED IN WASECA. 

OTHER LOCATIONS IN THE WARNING INCLUDE STEELE CENTER...MOLAND...
MERTON...GREENLAND...DEERFIELD...CLINTON FALLS...BIXBY...
WATERVILLE...WASECA AND OWATONNA.

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

REPORT ANY DAMAGE TO YOUR LOCAL EMERGENCY MANAGER...OR THE NEAREST
LAW ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER SERVICE.

LAT...LON 4385 9347 4421 9378 4425 9377 4422 9307
      4385 9306
TIME...MOT...LOC 2058Z 305DEG 19KT 4397 9315 4405 9345
          4420 9376

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 30, 7:09 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Waseca	36 min
May 31, 2:24 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur	51 min
May 31, 4:15 PM CDT	Severe Thunderstorm Warning	MPX	Faribault, Freeborn, Steele, Waseca	48 min
May 31, 4:15 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Sherburne	60 min
May 31, 4:23 PM CDT	Severe Thunderstorm Warning	MPX	Morrison	67 min
May 31, 4:43 PM CDT	Severe Thunderstorm Warning	MPX	Kanabec, Mille Lacs, Morrison	62 min
May 31, 5:01 PM CDT	Severe Thunderstorm Warning	MPX	Sherburne, Wright	59 min
May 31, 5:16 PM CDT	Tornado Warning	MPX	Sherburne, Wright	44 min
May 31, 5:25 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Hennepin, Ramsey	65 min
May 31, 5:28 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Mille Lacs, Morrison	62 min
May 31, 5:38 PM CDT	Tornado Warning	MPX	Hennepin, Wright	40 min
May 31, 6:17 PM CDT	Severe Thunderstorm Warning	MPX	Chisago, Isanti	58 min
May 31, 6:26 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Hennepin, Ramsey, Scott	50 min
May 31, 6:44 PM CDT	Severe Thunderstorm Warning	MPX	Kanabec, Mille Lacs, Morrison	46 min
May 31, 6:45 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Chisago, Washington	45 min
May 31, 6:55 PM CDT	Tornado Warning	MPX	Anoka, Chisago, Washington	50 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2008 Every severe thunderstorm warning in 2008

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.