Alert archive / Minnesota / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 236, NWS Twin Cities, MN

July 29, 2008Chippewa County, Lac qui Parle County, Swift County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 29, 2008, 12:12 AM CDT for Chippewa County, Lac qui Parle County, Swift County, Minnesota. It was in force for 63 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 29, 2008, 12:12 AM CDT (05:12 UTC)
Expired
Jul 29, 2008, 1:15 AM CDT
In force
63 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon

Counties Chippewa County, MN, Lac qui Parle County, MN, Swift County, MN

The radar

The Aberdeen radar (KABR), 178 km from the middle of the area, began a volume at 05:11 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.

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 5.2 hours before the alert went out and 178 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-pSkew-T log-p diagram, Aberdeen, SD at 00:00Z on 2008-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4093 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 00:00Z on 2008-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
4093 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
826 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
360 m²/s²
Significant tornado parameter
4.8
Supercell composite
26.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KMPX 290512
SVRMPX
MNC023-073-151-290615-
/O.NEW.KMPX.SV.W.0236.080729T0512Z-080729T0615Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1212 AM CDT TUE JUL 29 2008

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN SWIFT COUNTY IN WEST CENTRAL MINNESOTA...
  LAC QUI PARLE COUNTY IN WEST CENTRAL MINNESOTA...
  NORTHWESTERN CHIPPEWA COUNTY IN WEST CENTRAL MINNESOTA...

* UNTIL 115 AM CDT

* AT 1209 AM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
  PRODUCING NICKEL SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. 
  THIS STORM WAS LOCATED NEAR MARIETTA...OR ABOUT 9 MILES WEST OF
  MADISON...AND MOVING NORTHEAST AT 32 MPH.

* SOME LOCATIONS INCLUDE...
  MADISON...
  DAWSON...
  BELLINGHAM...
  CERRO GORDO...
  WATSON...
  MILAN...
  APPLETON...
  BIG BEND CITY...
  HOLLOWAY...
  DANVERS...

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 SIGNIFICANT WIND OR HAIL DAMAGE TO THE NEAREST LAW
ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER SERVICE.

LAT...LON 4527 9646 4527 9633 4520 9614 4541 9613
      4542 9571 4497 9575 4486 9611 4484 9645
TIME...MOT...LOC 0512Z 225DEG 27KT 4503 9636

$$
4 follow-up statements
000 
WWUS53 KMPX 290526
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1226 AM CDT TUE JUL 29 2008

MNC023-073-151-290615-
/O.CON.KMPX.SV.W.0236.000000T0000Z-080729T0615Z/
SWIFT MN-LAC QUI PARLE MN-CHIPPEWA MN-
1225 AM CDT TUE JUL 29 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM CDT
FOR NORTHWESTERN CHIPPEWA...LAC QUI PARLE  AND WESTERN SWIFT COUNTIES
IN WEST CENTRAL MINNESOTA...

AT 1222 AM CDT...RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM...
CAPABLE OF PRODUCING NICKEL SIZE HAIL AND DAMAGING WINDS IN EXCESS OF
60 MPH.  THE SEVERE STORM WAS LOCATED 3 MILES WEST OF MADISON...OR 
ABOUT 8 MILES EAST OF MARIETTA...AND MOVING NORTHEAST AT 31 MPH. IN 
ADDITION...OTHER STRONG STORMS TO THE NORTH AND SOUTH OF THIS ONE 
WERE DEVELOPING RAPIDLY.

OTHER LOCATIONS IN THE WARNING INCLUDE CERRO GORDO...BIG BEND CITY...
WATSON...NASSAU...MILAN...MARIETTA...MADISON...LOUISBURG...HOLLOWAY
AND DAWSON.

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 4527 9646 4527 9633 4520 9614 4541 9613
      4542 9571 4497 9575 4486 9611 4485 9627
      4490 9645
TIME...MOT...LOC 0525Z 241DEG 27KT 4502 9623

$$
000 
WWUS53 KMPX 290538
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1238 AM CDT TUE JUL 29 2008

MNC023-073-151-290615-
/O.CON.KMPX.SV.W.0236.000000T0000Z-080729T0615Z/
SWIFT MN-LAC QUI PARLE MN-CHIPPEWA MN-
1238 AM CDT TUE JUL 29 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM CDT
FOR NORTHWESTERN CHIPPEWA...LAC QUI PARLE  AND WESTERN SWIFT COUNTIES
IN WEST CENTRAL MINNESOTA...

AT 1235 AM CDT...RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM...
CAPABLE OF PRODUCING NICKEL SIZE HAIL AND DAMAGING WINDS IN EXCESS OF
60 MPH.  THE SEVERE STORM WAS LOCATED NEAR CERRO GORDO...AND MOVING 
EAST AT 42 MPH. OTHER STRONG STORMS WERE CONTINUING TO DEVELOP 
RAPIDLY TO THE NORTH AND SOUTH OF THIS ONE.

OTHER LOCATIONS IN THE WARNING INCLUDE CERRO GORDO...BIG BEND CITY...
WATSON...MILAN...MADISON...LOUISBURG...HOLLOWAY...DAWSON...DANVERS
AND BELLINGHAM.

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 4527 9646 4527 9633 4520 9614 4541 9613
      4542 9571 4497 9575 4489 9602 4496 9633
      4515 9645
TIME...MOT...LOC 0538Z 254DEG 37KT 4507 9602

$$
000 
WWUS53 KMPX 290549
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1249 AM CDT TUE JUL 29 2008

MNC023-073-151-290615-
/O.CON.KMPX.SV.W.0236.000000T0000Z-080729T0615Z/
SWIFT MN-LAC QUI PARLE MN-CHIPPEWA MN-
1249 AM CDT TUE JUL 29 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM CDT
FOR NORTHWESTERN CHIPPEWA...EASTERN LAC QUI PARLE  AND WESTERN SWIFT
COUNTIES IN WEST CENTRAL MINNESOTA...

AT 1249 AM CDT...RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM...
CAPABLE OF PRODUCING NICKEL SIZE HAIL AND DAMAGING WINDS IN EXCESS OF
60 MPH.  THE SEVERE STORM WAS LOCATED 4 MILES SOUTH OF MILAN...AND 
MOVING EAST AT 45 MPH. MORE STRONG STORMS WERE CONTINUING TO DEVELOP 
RAPIDLY TO THE NORTH AND SOUTH OF THIS ONE.

OTHER LOCATIONS IN THE WARNING INCLUDE CERRO GORDO...BIG BEND CITY...
WATSON...MILAN...LOUISBURG...HOLLOWAY...DAWSON...DANVERS AND
APPLETON.

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 4525 9628 4524 9626 4520 9614 4541 9613
      4542 9571 4511 9575 4497 9575 4489 9601
      4524 9631
TIME...MOT...LOC 0549Z 262DEG 39KT 4506 9583

$$
000 
WWUS53 KMPX 290605
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
105 AM CDT TUE JUL 29 2008

MNC023-073-290614-
/O.CAN.KMPX.SV.W.0236.000000T0000Z-080729T0615Z/
LAC QUI PARLE MN-CHIPPEWA MN-
104 AM CDT TUE JUL 29 2008

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CHIPPEWA AND 
EASTERN LAC QUI PARLE COUNTIES IN WEST CENTRAL MINNESOTA IS 
CANCELLED...

RADAR INDICATED THAT THE SEVERE STORM HAD WEAKENED IN THIS AREA. 
THEREFORE...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 AM CDT
TUESDAY MORNING FOR CENTRAL MINNESOTA.

LAT...LON 4541 9613 4542 9571 4537 9572 4536 9573
      4535 9572 4522 9573 4524 9611
TIME...MOT...LOC 0604Z 262DEG 35KT 4536 9589

$$

MNC151-290615-
/O.CON.KMPX.SV.W.0236.000000T0000Z-080729T0615Z/
SWIFT MN-
104 AM CDT TUE JUL 29 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM CDT
FOR NORTHWESTERN SWIFT COUNTY...

AT 101 AM CDT...DOPPLER RADAR INDICATED A STORM CAPABLE OF PRODUCING 
PENNY SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THE SEVERE 
STORM WAS LOCATED 7 MILES NORTH OF HOLLOWAY...AND MOVING EAST AT 40 
MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE HOLLOWAY AND DANVERS.

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 800 AM CDT
TUESDAY MORNING FOR CENTRAL MINNESOTA.

LAT...LON 4541 9613 4542 9571 4537 9572 4536 9573
      4535 9572 4522 9573 4524 9611
TIME...MOT...LOC 0604Z 262DEG 35KT 4536 9589

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 1:13 AM CDTSevere Thunderstorm WarningMPXKandiyohi, Pope, Swift47 min
Jul 29, 2:08 AM CDTSevere Thunderstorm WarningMPXStearns52 min
Jul 29, 2:21 AM CDTSevere Thunderstorm WarningMPXMorrison54 min
Jul 29, 2:32 AM CDTSevere Thunderstorm WarningMPXBenton43 min
Jul 29, 2:59 AM CDTHigh Wind WarningMPXDouglas, Pope, Stearns, Stevens, Todd2 hr

Nearby

Severe Thunderstorm Warnings in Minnesota, 2008Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.