Alert archive / Minnesota / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 131, NWS Twin Cities, MN

June 27, 2008Freeborn County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 27, 2008, 4:51 PM CDT for Freeborn County, Minnesota. It was in force for 39 min. 1 report 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 27, 2008, 4:51 PM CDT (21:51 UTC)
Expired: Jun 27, 2008, 5:30 PM CDT
In force: 39 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon

County Freeborn County, MN

The radar

The Minneapolis radar (KMPX), 134 km from the middle of the area, began a volume at 21:52 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 27, 4:55 PM CDT	HAIL 0.88	3 Sw Albert Lea, 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 27, 1:09 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.9 hours before the alert went out and 135 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: 374 J/kg
Mixed-layer CIN: -121 J/kg
Mixed-layer LCL: 791 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: -16 m²/s²
0-3 km storm-relative helicity: 1 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 272151
SVRMPX
MNC047-272230-
/O.NEW.KMPX.SV.W.0131.080627T2151Z-080627T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
451 PM CDT FRI JUN 27 2008

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN FREEBORN COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 530 PM CDT

* AT 447 PM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...
  CAPABLE OF PRODUCING PENNY SIZE HAIL AND DAMAGING WINDS IN EXCESS
  OF 65 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 4
  MILES SOUTHWEST OF HOLLANDALE TO 4 MILES SOUTH OF GLENVILLE...AND
  MOVING EAST AT 22 MPH.

* SOME LOCATIONS INCLUDE...
  HOLLANDALE...
  MYRTLE...
  LONDON...

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 800 PM CDT FRIDAY
EVENING FOR SOUTHERN MINNESOTA AND NORTHWESTERN WISCONSIN.

LAT...LON 4379 9306 4351 9305 4351 9344 4377 9340
TIME...MOT...LOC 2151Z 261DEG 19KT 4372 9322 4352 9323

$$

2 follow-up statements

000 
WWUS53 KMPX 272210
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
509 PM CDT FRI JUN 27 2008

MNC047-272230-
/O.CON.KMPX.SV.W.0131.000000T0000Z-080627T2230Z/
FREEBORN MN-
509 PM CDT FRI JUN 27 2008

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

AT 506 PM CDT...RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM...
CAPABLE OF PRODUCING PENNY SIZE HAIL AND DAMAGING WINDS IN EXCESS OF
60 MPH.  THE SEVERE STORM WAS LOCATED NEAR MYRTLE...OR ABOUT 2 MILES
EAST OF MYRTLE...AND MOVING EAST AT 22 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE LONDON...MYRTLE.

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.

REPORT ANY DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY...FOR RELAY
TO THE NATIONAL WEATHER SERVICE.

LAT...LON 4351 9331 4378 9318 4379 9306 4359 9305
      4358 9306 4357 9305 4351 9305
TIME...MOT...LOC 2209Z 261DEG 19KT 4355 9310

$$

JPR

000 
WWUS53 KMPX 272222
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
522 PM CDT FRI JUN 27 2008

MNC047-272232-
/O.EXP.KMPX.SV.W.0131.000000T0000Z-080627T2230Z/
FREEBORN MN-
522 PM CDT FRI JUN 27 2008

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN FREEBORN COUNTY
EXPIRES AT 530 PM CDT...

STRONG STORMS HAVE JUST ABOUT MOVED OUT OF THE AREA AND ADDITIONAL 
DEVELOPMENT IS NOT EXPECTED.

LAT...LON 4351 9331 4378 9318 4379 9306 4359 9305
      4358 9306 4357 9305 4351 9305
TIME...MOT...LOC 2222Z 261DEG 19KT 4356 9301

$$

JPR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 27, 2:08 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Watonwan	52 min
Jun 27, 3:07 PM CDT	Tornado Warning	MPX	Benton	23 min
Jun 27, 3:29 PM CDT	Tornado Warning	MPX	Benton, Mille Lacs	31 min
Jun 27, 4:03 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Hennepin, Scott	42 min
Jun 27, 6:38 PM CDT	Severe Thunderstorm Warning	MPX	Yellow Medicine	39 min
Jun 27, 6:45 PM CDT	Severe Thunderstorm Warning	MPX	McLeod, Sibley	38 min
Jun 27, 6:48 PM CDT	Severe Thunderstorm Warning	MPX	Renville	42 min
Jun 27, 6:52 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Le Sueur, Nicollet, Sibley	53 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.