Alert archive / Minnesota / Tornado Warnings in 2008

Tornado Warning 37, NWS Twin Cities, MN

July 11, 2008McLeod County, Meeker County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jul 11, 2008, 7:10 PM CDT for McLeod County, Meeker County, Minnesota. It was in force for 39 min. 2 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
Jul 11, 2008, 7:10 PM CDT (00:10 UTC)
Expired
Jul 11, 2008, 7:49 PM CDT
In force
39 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon

Counties McLeod County, MN, Meeker County, MN

The radar

The Minneapolis radar (KMPX), 71 km from the middle of the area, began a volume at 00:13 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
Jul 11, 7:26 PM CDTTSTM WND GST 624 Nne Hutchinson, MN62 MPH WIND GUST MEASURED AT HOOK LAKE RD.
Jul 11, 7:34 PM CDTHAIL 0.757 N Hutchinson, 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.

IssuedProductOfficeLasted
Jul 11, 2:26 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 0.2 hours before the alert went out and 68 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, Minneapolis, MN at 00:00Z on 2008-07-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2916 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2008-07-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 124 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
2916 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
1332 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
124 m²/s²
0-3 km storm-relative helicity
253 m²/s²
Significant tornado parameter
1.6
Supercell composite
12.9

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KMPX 120010
TORMPX
MNC085-093-120100-
/O.NEW.KMPX.TO.W.0037.080712T0010Z-080712T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
710 PM CDT FRI JUL 11 2008

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN MEEKER COUNTY IN CENTRAL MINNESOTA...
  NORTHWESTERN MCLEOD COUNTY IN CENTRAL MINNESOTA...

* UNTIL 800 PM CDT

* AT 709 PM CDT...RADAR INDICATED A LINE OF STORMS CAPABLE OF
  PRODUCING A TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS ALONG
  A LINE EXTENDING FROM 4 MILES NORTH OF CORVUSO TO 3 MILES SOUTH OF
  COSMOS...AND MOVING EAST AT 40 MPH.

* SOME LOCATIONS INCLUDE...
  CORVUSO...
  CEDAR MILLS...
  HUTCHINSON...

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.

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 4505 9425 4487 9424 4489 9450 4489 9476
      4497 9472
TIME...MOT...LOC 0010Z 270DEG 35KT 4499 9457 4489 9468

$$
2 follow-up statements
000 
WWUS53 KMPX 120034
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
734 PM CDT FRI JUL 11 2008

MNC085-093-120100-
/O.CON.KMPX.TO.W.0037.000000T0000Z-080712T0100Z/
MEEKER MN-MCLEOD MN-
734 PM CDT FRI JUL 11 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM CDT FOR
NORTHWESTERN MCLEOD AND SOUTHEASTERN MEEKER COUNTIES...

AT 730 PM CDT...RADAR CONTINUED TO INDICATE A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING A TORNADO.  THE MOST DANGEROUS
PART OF THE STORM WAS LOCATED ALONG A LINE EXTENDING FROM 6 MILES
NORTHEAST OF CEDAR MILLS TO 3 MILES SOUTH OF CEDAR MILLS...AND MOVING
EAST AT 35 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE HUTCHINSON AND CEDAR MILLS.

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.

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 4489 9449 4490 9450 4489 9460 4499 9455
      4505 9425 4487 9424
TIME...MOT...LOC 0034Z 268DEG 32KT 4500 9438 4490 9445

$$
000 
WWUS53 KMPX 120049
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
749 PM CDT FRI JUL 11 2008

MNC085-093-120059-
/O.CAN.KMPX.TO.W.0037.000000T0000Z-080712T0100Z/
MEEKER MN-MCLEOD MN-
749 PM CDT FRI JUL 11 2008

...THE TORNADO WARNING FOR NORTHWESTERN MCLEOD AND SOUTHEASTERN
MEEKER COUNTIES IS CANCELLED...

A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR MCLEOD COUNTY
UNTIL 815 PM CDT.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT FRIDAY EVENING
FOR SOUTHERN MINNESOTA.

LAT...LON 4489 9449 4490 9450 4489 9460 4499 9455
      4505 9425 4487 9424
TIME...MOT...LOC 0049Z 268DEG 32KT 4500 9419 4490 9426

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 11, 7:16 PM CDTSevere Thunderstorm WarningMPXBenton, Mille Lacs, Sherburne, Wright44 min
Jul 11, 7:24 PM CDTTornado WarningMPXWright36 min
Jul 11, 7:28 PM CDTSevere Thunderstorm WarningMPXCarver, McLeod, Sibley47 min
Jul 11, 7:37 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Brown, Nicollet53 min
Jul 11, 7:43 PM CDTSevere Thunderstorm WarningMPXIsanti, Kanabec47 min
Jul 11, 7:43 PM CDTSevere Thunderstorm WarningMPXRenville17 min
Jul 11, 7:56 PM CDTSevere Thunderstorm WarningMPXAnoka, Carver, Chisago, Hennepin, Ramsey, Washington64 min
Jul 11, 8:03 PM CDTSevere Thunderstorm WarningMPXSherburne27 min
Jul 11, 8:10 PM CDTSevere Thunderstorm WarningMPXCarver, Sibley35 min
Jul 11, 8:19 PM CDTSevere Thunderstorm WarningMPXLe Sueur, Rice, Scott56 min
Jul 11, 8:26 PM CDTSevere Thunderstorm WarningMPXIsanti19 min
Jul 11, 8:30 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Brown, Nicollet45 min
Jul 11, 8:36 PM CDTSevere Thunderstorm WarningMPXDakota, Goodhue, Rice54 min
Jul 11, 8:46 PM CDTTornado WarningMPXChisago, Washington20 min
Jul 11, 9:14 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Le Sueur, Rice, Steele, Waseca61 min
Jul 11, 9:29 PM CDTSevere Thunderstorm WarningMPXDakota, Goodhue, Rice61 min
Jul 11, 10:13 PM CDTSevere Thunderstorm WarningMPXFreeborn47 min
Jul 11, 10:18 PM CDTSevere Thunderstorm WarningMPXSteele19 min
Jul 12, 3:45 AM CDTWind AdvisoryMPXChippewa, Douglas, Lac qui Parle, Pope, Stevens, Swift and 1 more15 hr

Nearby

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