Alert archive / Minnesota / Tornado Warnings in 2010

Tornado Warning 89, NWS Twin Cities, MN

August 12, 2010Lac qui Parle County, Swift County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Aug 12, 2010, 5:28 PM CDT for Lac qui Parle County, Swift County, Minnesota. It was in force for 62 min. 5 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
Aug 12, 2010, 5:28 PM CDT (22:28 UTC)
Expired
Aug 12, 2010, 6:30 PM CDT
In force
62 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon

Counties 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 22:31 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

TimeReportWhereRemark
Aug 12, 5:51 PM CDTFUNNEL CLOUD4 N Madison, MN
Aug 12, 5:52 PM CDTTORNADO1 Ssw Louisburg, MNBRIEF TOUCHDOWN.
Aug 12, 6:00 PM CDTTSTM WND GST 603 Ese Odessa, MN3-INCH-DIAMETER BRANCHES DOWN AND NICKEL-SIZED HAIL
Aug 12, 6:05 PM CDTTORNADOBellingham, MNPORCH RIPPED OFF BUILDING.
Aug 12, 6:22 PM CDTTORNADO1 N Louisburg, MNDEBRIS IN THE AIR.

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.

IssuedProductOfficeLasted
Aug 12, 3:22 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 10.5 hours before the alert went out and 180 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 12:00Z on 2010-08-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2998 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 12:00Z on 2010-08-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 107 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
2998 J/kg
Mixed-layer CIN
-91 J/kg
Mixed-layer LCL
1024 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
107 m²/s²
0-3 km storm-relative helicity
331 m²/s²
Significant tornado parameter
1.5
Supercell composite
6.4

Open this sounding in Storm Lab

The text

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

001 
WFUS53 KMPX 122228
TORMPX
MNC073-151-122330-
/O.NEW.KMPX.TO.W.0089.100812T2228Z-100812T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
528 PM CDT THU AUG 12 2010

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN SWIFT COUNTY IN WEST CENTRAL MINNESOTA...
  NORTHWESTERN LAC QUI PARLE COUNTY IN WEST CENTRAL MINNESOTA...

* UNTIL 630 PM CDT

* AT 524 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A
  TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS 2 MILES SOUTHWEST
  OF BELLINGHAM...AND MOVING NORTHEAST AT 40 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  LOUISBURG...
  APPLETON...
  HOLLOWAY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON RADAR...IT MEANS THAT
STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY ALREADY
BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT THURSDAY EVENING
FOR SOUTHWESTERN MINNESOTA.

&&

LAT...LON 4528 9644 4525 9628 4520 9618 4520 9612
      4541 9611 4541 9602 4522 9582 4515 9598
      4515 9604 4513 9603 4496 9644
TIME...MOT...LOC 2228Z 228DEG 34KT 4513 9626

$$
1 follow-up statement
390 
WWUS53 KMPX 122240
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
540 PM CDT THU AUG 12 2010

MNC073-151-122330-
/O.CON.KMPX.TO.W.0089.000000T0000Z-100812T2330Z/
SWIFT MN-LAC QUI PARLE MN-
540 PM CDT THU AUG 12 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN LAC QUI PARLE
AND WESTERN SWIFT COUNTIES UNTIL 630 PM CDT...

AT 538 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS STORM
WAS LOCATED NEAR NASSAU...OR 9 MILES NORTHWEST OF MADISON...MOVING
NORTHEAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  BELLINGHAM...LOUISBURG...APPLETON AND HOLLOWAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4528 9644 4525 9628 4520 9618 4520 9612
      4541 9611 4541 9602 4522 9582 4515 9598
      4515 9604 4513 9603 4496 9644
TIME...MOT...LOC 2240Z 228DEG 34KT 4508 9634

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 12, 6:34 AM CDTSpecial Weather StatementMPXTodd41 min
Aug 12, 6:40 AM CDTSevere Thunderstorm WarningMPXDouglas, Todd26 min
Aug 12, 10:03 AM CDTHeat AdvisoryMPXAnoka, Blue Earth, Brown, Carver, Dakota, Faribault and 16 more9 hr
Aug 12, 4:37 PM CDTFlash Flood WatchMPXAnoka, Carver, Chisago, Dakota, Freeborn, Goodhue and 9 more29 hr
Aug 12, 5:34 PM CDTSpecial Weather StatementMPXRedwood56 min
Aug 12, 5:40 PM CDTSevere Thunderstorm WarningMPXBrown, Redwood, Renville, Yellow Medicine65 min
Aug 12, 6:18 PM CDTTornado WarningMPXChippewa, Lac qui Parle, Swift42 min
Aug 12, 6:19 PM CDTSevere Thunderstorm WarningMPXDouglas56 min
Aug 12, 6:21 PM CDTTornado WarningMPXStevens24 min
Aug 12, 6:28 PM CDTTornado WarningMPXChippewa, Lac qui Parle, Swift47 min
Aug 12, 6:35 PM CDTSevere Thunderstorm WarningMPXBrown, Chippewa, Kandiyohi, McLeod, Meeker, Redwood and 4 more55 min
Aug 12, 6:40 PM CDTAreal Flood AdvisoryMPXLac qui Parle, Swift6 hr
Aug 12, 6:47 PM CDTTornado WarningMPXStevens28 min
Aug 12, 6:52 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Brown, McLeod, Nicollet, Sibley53 min
Aug 12, 6:58 PM CDTTornado WarningMPXDouglas, Pope47 min

Nearby

Tornado Warnings in Minnesota, 2010Every tornado warning in 2010Tornadoes in 2010

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.