Alert archive / Minnesota / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 71, NWS Twin Cities, MN

May 31, 2008Morrison County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 31, 2008, 4:23 PM CDT for Morrison County, Minnesota. It was in force for 67 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: May 31, 2008, 4:23 PM CDT (21:23 UTC)
Expired: May 31, 2008, 5:30 PM CDT
In force: 67 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon

County Morrison County, MN

What was reported inside it

Time	Report	Where	Remark
May 31, 5:17 PM CDT	HAIL 0.88	Pierz, MN
May 31, 5:30 PM CDT	HAIL 0.75	Buckman, MN	FEW DIME TO PENNY SIZE HAILSTONES BUT LARGER JUST SOUTH OF BUCKMAN WITH DAMAGE TO VINYL SIDING ON HOMES.

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, 9.4 hours before the alert went out and 153 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 312123
SVRMPX
MNC097-312230-
/O.NEW.KMPX.SV.W.0071.080531T2123Z-080531T2230Z/

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

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MORRISON COUNTY IN CENTRAL MINNESOTA...

* UNTIL 530 PM CDT

* AT 421 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM...
  CAPABLE OF PRODUCING NICKEL SIZE HAIL AND DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 11 MILES NORTH OF RANDALL...OR
  ABOUT 9 MILES SOUTHEAST OF MOTLEY...AND MOVING SOUTHEAST AT 26 MPH.

* LOCATIONS IMPACTED INCLUDE...
  RANDALL...
  LITTLE FALLS...
  ROYALTON...
  PIERZ...

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT
SATURDAY EVENING FOR SOUTHERN MINNESOTA.

LAT...LON 4625 9439 4615 9439 4615 9401 4604 9382
      4583 9382 4582 9445 4625 9465 4632 9458
      4632 9448
TIME...MOT...LOC 2123Z 306DEG 23KT 4624 9450

$$

MDB

1 follow-up statement

000 
WWUS53 KMPX 312147
SVSMPX

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

MNC097-312230-
/O.CON.KMPX.SV.W.0071.000000T0000Z-080531T2230Z/
MORRISON MN-
446 PM CDT SAT MAY 31 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR MORRISON COUNTY...

AT 443 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM...CAPABLE OF PRODUCING NICKEL SIZE HAIL AND DAMAGING
WINDS IN EXCESS OF 60 MPH.  THIS SEVERE THUNDERSTORM WAS LOCATED 8 
MILES EAST OF RANDALL...AND MOVING SOUTHEAST AT 31 MPH. ADDITIONAL 
STRONG TO SEVERE THUNDERSTORMS WERE LOCATED BETWEEN LASTRUP AND 
PIERZ AND JUST SOUTH OF HILLMAN.

OTHER LOCATIONS IN THE WARNING INCLUDE MORRILL...CUSHING...
SOBIESKI...ROYALTON...RANDALL...PIERZ...LITTLE FALLS...LASTRUP...
HILLMAN AND HARDING.

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

LAT...LON 4625 9439 4615 9439 4615 9401 4604 9382
      4583 9382 4582 9445 4625 9465 4632 9458
      4632 9448
TIME...MOT...LOC 2146Z 310DEG 27KT 4611 9431

$$

MDB

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, 3:08 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Rice, Steele, Waseca	67 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, 4:43 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.