Alert archive / Minnesota / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 73, NWS Twin Cities, MN

May 31, 2008Sherburne County, Wright County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 31, 2008, 5:01 PM CDT for Sherburne County, Wright County, Minnesota. It was in force for 59 min. 8 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, 5:01 PM CDT (22:01 UTC)
Expired: May 31, 2008, 6:00 PM CDT
In force: 59 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon

Counties Sherburne County, MN, Wright County, MN

The radar

The Minneapolis radar (KMPX), 59 km from the middle of the area, began a volume at 22:04 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, 5:04 PM CDT	HAIL 0.88	8 N Becker, MN
May 31, 5:21 PM CDT	HAIL 1	5 N Big Lake, MN
May 31, 5:24 PM CDT	HAIL 1.75	1 N Big Lake, MN
May 31, 5:25 PM CDT	HAIL 1.5	1 E Big Lake, MN
May 31, 5:26 PM CDT	FUNNEL CLOUD	Big Lake, MN	VISIBLE FUNNEL HALFWAY TO GROUND NOTED. HOWEVER THE BLOWING DUST NEAR FUNNEL IS UNIDIRECTIONAL AND SHOWS NO ROTATION AND IS LIKELY RFD WIND.
May 31, 5:29 PM CDT	HAIL 0.75	Monticello, MN
May 31, 5:30 PM CDT	HAIL 0.75	1 N Big Lake, MN
May 31, 5:47 PM CDT	HAIL 0.75	Albertville, 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, 10.0 hours before the alert went out and 58 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 312202
SVRMPX
MNC141-171-312300-
/O.NEW.KMPX.SV.W.0073.080531T2201Z-080531T2300Z/

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

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SHERBURNE COUNTY IN CENTRAL MINNESOTA...
  NORTHEASTERN WRIGHT COUNTY IN CENTRAL MINNESOTA...

* UNTIL 600 PM CDT

* AT 500 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 5 MILES NORTH OF BECKER...AND
  MOVING SOUTHEAST AT 28 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BECKER...
  MONTICELLO...
  BIG LAKE...
  ELK RIVER...
  ST MICHAEL...
  ORROCK...
  ALBERTVILLE...

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.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE
SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED.

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

LAT...LON 4538 9357 4525 9352 4516 9384 4548 9407
      4556 9376
TIME...MOT...LOC 2201Z 319DEG 24KT 4544 9389

$$

MDB

2 follow-up statements

000 
WWUS53 KMPX 312210
SVSMPX

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

MNC141-171-312300-
/O.CON.KMPX.SV.W.0073.000000T0000Z-080531T2300Z/
SHERBURNE MN-WRIGHT MN-
510 PM CDT SAT MAY 31 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR NORTHEASTERN WRIGHT AND SHERBURNE COUNTIES...

AT 508 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM...CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING
WINDS IN EXCESS OF 60 MPH.  THIS SEVERE THUNDERSTORM WAS LOCATED 3
MILES NORTHEAST OF BECKER...AND MOVING SOUTHEAST AT 28 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE SILVER CREEK...SANTIAGO...
OTSEGO...HASTY...ENFIELD...ST MICHAEL...MONTICELLO...ELK RIVER...
CLEAR LAKE AND BIG LAKE.

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.

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

LAT...LON 4538 9357 4525 9352 4516 9384 4548 9407
      4556 9376
TIME...MOT...LOC 2210Z 319DEG 24KT 4539 9383

$$

MDB

000 
WWUS53 KMPX 312254 RRA
SVSMPX

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

MNC141-171-312304-
/O.EXP.KMPX.SV.W.0073.000000T0000Z-080531T2300Z/
SHERBURNE MN-WRIGHT MN-
554 PM CDT SAT MAY 31 2008

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WRIGHT AND
SHERBURNE COUNTIES EXPIRES AT 600 PM CDT...

SEVERE STORMS HAVE MOVED OUT OF THE WARNED AREA HOWEVER...MORE 
THUNDERSTORMS WERE DEVELOPING IN THE AREA...REMAIN ALERT FOR 
POSSIBLE ADDITIONAL WARNINGS.

LAT...LON 4538 9357 4525 9352 4516 9384 4548 9407
      4556 9376
TIME...MOT...LOC 2254Z 319DEG 24KT 4516 9356

$$

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, 4:23 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, 5:16 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.