Alert archive / Minnesota / Tornado Warnings in 2008

Tornado Warning 14, NWS Twin Cities, MN

May 31, 2008Hennepin County, Wright County, Minnesota

NWS Twin Cities, MN issued this tornado warning at May 31, 2008, 5:38 PM CDT for Hennepin County, Wright County, Minnesota. It was in force for 40 min. 17 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, 5:38 PM CDT (22:38 UTC)
Expired: May 31, 2008, 6:18 PM CDT
In force: 40 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon

Counties Hennepin County, MN, Wright County, MN

The radar

The Minneapolis radar (KMPX), 32 km from the middle of the area, began a volume at 22:38 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, 5:40 PM CDT	HAIL 0.88	Dayton, MN	AT INTERSECTION OF COUNTY ROADS 12 AND 13.
May 31, 5:47 PM CDT	FUNNEL CLOUD	Corcoran, MN	GOING UP AND DOWN BUT HAS NOT TOUCHED DOWN AT THIS TIME. LOCATION IS LIKELY NORTHERN CORCORAN.
May 31, 5:52 PM CDT	HAIL 1.75	Rogers, MN
May 31, 5:57 PM CDT	HAIL 1	2 Wnw Maple Grove, MN
May 31, 5:59 PM CDT	HAIL 0.88	Maple Grove, MN	AT INTERSTATE 94 AND HEMLOCK. METEOROLOGIST CHASER ALSO SEES SIGNIFICANT RFD WIND BUT NO FUNNEL.
May 31, 5:59 PM CDT	HAIL 1.5	Rogers, MN
May 31, 6:02 PM CDT	HAIL 1	Maple Grove, MN	INTERSTATE 94 AND COUNTY ROAD 30.
May 31, 6:03 PM CDT	HAIL 1.75	Maple Grove, MN	OVER WESTERN AND CENTRAL PORTIONS OF MAPLE GROVE PER CITY POLICE.
May 31, 6:07 PM CDT	HAIL 1	Maple Grove, MN	AT I-94 AND HEMLOCK.
May 31, 6:09 PM CDT	HAIL 1.75	3 Ne Plymouth, MN
May 31, 6:10 PM CDT	HAIL 1	Plymouth, MN	169 AND SCHMIDT LAKE RD.
May 31, 6:12 PM CDT	HAIL 1	Crystal, MN
May 31, 6:12 PM CDT	HAIL 1	Plymouth, MN	494 AND COUNTY ROAD 9.
May 31, 6:14 PM CDT	HAIL 1	New Hope, MN
May 31, 6:15 PM CDT	HAIL 0.75	Crystal, MN	BOONE AVE AND 32ND.
May 31, 6:15 PM CDT	HAIL 0.75	Robbinsdale, MN	AT NORTH MEMORIAL HOSPITAL.
May 31, 6:17 PM CDT	HAIL 1	Maple Grove, MN	INTERSTATE 94 AND COUNTY ROAD 30.

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, 10.6 hours before the alert went out and 32 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 
WFUS53 KMPX 312238
TORMPX
MNC053-171-312330-
/O.NEW.KMPX.TO.W.0014.080531T2238Z-080531T2330Z/

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

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL WRIGHT COUNTY IN CENTRAL MINNESOTA...
  NORTHERN HENNEPIN COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 630 PM CDT

* AT 534 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A
  TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS NEAR ST
  MICHAEL...OR ABOUT OVER ST MICHAEL...AND MOVING SOUTHEAST AT 27
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  HANOVER...
  ROGERS...
  GREENFIELD...
  DAYTON...
  CORCORAN...
  LORETTO...
  HAMEL...
  MAPLE GROVE...
  MEDINA...
  OSSEO...
  LONG LAKE...
  PLYMOUTH...

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 4495 9355 4518 9378 4528 9356 4523 9349
      4523 9347 4522 9346 4503 9328
TIME...MOT...LOC 2238Z 322DEG 24KT 4522 9363

$$

3 follow-up statements

000 
WWUS53 KMPX 312251
SVSMPX

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

MNC171-312300-
/O.CAN.KMPX.TO.W.0014.000000T0000Z-080531T2330Z/
WRIGHT MN-
550 PM CDT SAT MAY 31 2008

...THE TORNADO WARNING FOR EAST CENTRAL WRIGHT COUNTY IS CANCELLED...

DOPPLER RADAR INDICATED THAT THE SEVERE STORM HAD MOVED OUT OF THE 
WARNED AREA. THEREFORE...THE TORNADO WARNING HAS BEEN CANCELLED.

LAT...LON 4495 9355 4512 9370 4522 9351 4523 9347
      4507 9332 4506 9332 4503 9328
TIME...MOT...LOC 2250Z 322DEG 24KT 4516 9356

$$

MNC053-312330-
/O.CON.KMPX.TO.W.0014.000000T0000Z-080531T2330Z/
HENNEPIN MN-
550 PM CDT SAT MAY 31 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR NORTHERN
HENNEPIN COUNTY...

AT 547 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THE MOST DANGEROUS PART
OF THE STORM WAS LOCATED 2 MILES SOUTH OF ROGERS...AND MOVING 
SOUTHEAST AT 25 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE WAYZATA...MEDICINE LAKE...
HAMEL...ROGERS...ROBBINSDALE...PLYMOUTH...OSSEO...NEW HOPE...MEDINA
AND MAPLE GROVE.

LAT...LON 4495 9355 4512 9370 4522 9351 4523 9347
      4507 9332 4506 9332 4503 9328
TIME...MOT...LOC 2250Z 322DEG 24KT 4516 9356

$$

000 
WWUS53 KMPX 312307
SVSMPX

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

MNC053-312330-
/O.CON.KMPX.TO.W.0014.000000T0000Z-080531T2330Z/
HENNEPIN MN-
606 PM CDT SAT MAY 31 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR CENTRAL
HENNEPIN COUNTY...

AT 605 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THE MOST DANGEROUS PART
OF THE STORM WAS LOCATED NEAR PLYMOUTH...AND MOVING SOUTHEAST AT 25 
MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE WAYZATA...MEDICINE 
LAKE...HAMEL...ROBBINSDALE...PLYMOUTH...OSSEO...NEW HOPE...AND 
CRYSTAL.

LAT...LON 4495 9355 4505 9358 4513 9348 4515 9341
      4507 9332 4506 9332 4503 9328
TIME...MOT...LOC 2306Z 328DEG 27KT 4503 9349

$$

000 
WWUS53 KMPX 312318
SVSMPX

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

MNC053-312328-
/O.CAN.KMPX.TO.W.0014.000000T0000Z-080531T2330Z/
HENNEPIN MN-
618 PM CDT SAT MAY 31 2008

...THE TORNADO WARNING FOR CENTRAL HENNEPIN COUNTY IS CANCELLED...

DOPPLER RADAR INDICATED THAT THE SEVERE STORM HAD MOVED OUT OF THE 
WARNED AREA. THEREFORE...THE TORNADO WARNING HAS BEEN CANCELLED.

LAT...LON 4495 9355 4505 9358 4513 9348 4515 9341
      4507 9332 4506 9332 4503 9328
TIME...MOT...LOC 2318Z 332DEG 29KT 4496 9336

$$

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, 5:01 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, 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

Tornado Warnings in Minnesota, 2008 Every tornado warning in 2008 Tornadoes 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.