Alert archive / Minnesota / Tornado Warnings in 2009

Tornado Warning 14, NWS Twin Cities, MN

June 21, 2009Blue Earth County, Waseca County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jun 21, 2009, 7:27 PM CDT for Blue Earth County, Waseca County, Minnesota. It was in force for 33 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
Jun 21, 2009, 7:27 PM CDT (00:27 UTC)
Expired
Jun 21, 2009, 8:00 PM CDT
In force
33 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon

Counties Blue Earth County, MN, Waseca County, MN

The radar

The Minneapolis radar (KMPX), 82 km from the middle of the area, began a volume at 00:28 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
Jun 21, 7:36 PM CDTFUNNEL CLOUD1 E St Clair, MNSOME ROTATION.
Jun 21, 8:10 PM CDTFUNNEL CLOUD3 Se Madison Lake, MNROTATING AND DROPING DOWN AND UP.

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
Jun 21, 3:17 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 0.5 hours before the alert went out and 81 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 2009-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 278 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, Minneapolis, MN at 00:00Z on 2009-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 270 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
278 J/kg
Mixed-layer CIN
-57 J/kg
Mixed-layer LCL
487 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
270 m²/s²
0-3 km storm-relative helicity
347 m²/s²
Significant tornado parameter
0.3
Supercell composite
3.9

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KMPX 220027
TORMPX
MNC013-161-220100-
/O.NEW.KMPX.TO.W.0014.090622T0027Z-090622T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
727 PM CDT SUN JUN 21 2009

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL BLUE EARTH COUNTY IN SOUTH CENTRAL MINNESOTA...
  NORTHWESTERN WASECA COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 800 PM CDT

* AT 725 PM CDT...RADAR WAS TRACKING A SEVERE STORM WITH STRONG
  ROTATION. THE MOST DANGEROUS PART OF THE STORM WAS 2 MILES
  SOUTHEAST OF ST CLAIR...AND MOVING NORTHEAST AT 15 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  JANESVILLE...
  
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 SUNDAY EVENING
FOR SOUTH CENTRAL MINNESOTA.

&&

LAT...LON 4420 9379 4420 9354 4399 9378 4405 9390
TIME...MOT...LOC 0026Z 213DEG 12KT 4407 9382

$$
3 follow-up statements
000 
WWUS53 KMPX 220039
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
739 PM CDT SUN JUN 21 2009

MNC013-161-220100-
/O.CON.KMPX.TO.W.0014.000000T0000Z-090622T0100Z/
BLUE EARTH MN-WASECA MN-
739 PM CDT SUN JUN 21 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM CDT FOR
NORTHWESTERN WASECA AND EAST CENTRAL BLUE EARTH COUNTIES...

AT 738 CDT...A FUNNEL CLOUD WAS REPORTED JUST EAST OF ST CLAIR BY 
LAW ENFORCEMENT. 

AT 738 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH STRONG
ROTATION.  THE MOST DANGEROUS PART OF THE STORM WAS LOCATED 3 MILES
EAST OF ST CLAIR...AND MOVING NORTHEAST AT 10 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE...JANESVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SUNDAY EVENING
FOR SOUTH CENTRAL MINNESOTA.

&&

LAT...LON 4420 9379 4420 9354 4399 9378 4405 9390
TIME...MOT...LOC 0039Z 213DEG 10KT 4409 9380

$$
000 
WWUS53 KMPX 220053
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
753 PM CDT SUN JUN 21 2009

MNC013-161-220100-
/O.CON.KMPX.TO.W.0014.000000T0000Z-090622T0100Z/
BLUE EARTH MN-WASECA MN-
753 PM CDT SUN JUN 21 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM CDT FOR
NORTHWESTERN WASECA AND NORTHEASTERN BLUE EARTH COUNTIES...

AT 754 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH STRONG
ROTATION.  THE MOST DANGEROUS PART OF THE STORM WAS LOCATED 3 MILES
WEST OF JANESVILLE...AND MOVING NORTHEAST AT 10 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE...JANESVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SUNDAY EVENING
FOR SOUTH CENTRAL MINNESOTA.

&&

LAT...LON 4410 9368 4411 9385 4420 9379 4420 9354
TIME...MOT...LOC 0053Z 213DEG 10KT 4412 9377

$$

JLT
000 
WWUS53 KMPX 220057
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
757 PM CDT SUN JUN 21 2009

MNC013-161-220108-
/O.EXP.KMPX.TO.W.0014.000000T0000Z-090622T0100Z/
BLUE EARTH MN-WASECA MN-
757 PM CDT SUN JUN 21 2009

...THE TORNADO WARNING FOR NORTHWESTERN WASECA AND NORTHEASTERN BLUE
EARTH COUNTIES EXPIRES AT 800 PM CDT...

TORNADIC SEVERE STORMS WERE ABOUT TO MOVE OUT OF THE COUNTY.
HOWEVER...MORE THUNDERSTORMS WERE DEVELOPING IN THE AREA...REMAIN
ALERT FOR ADDITIONAL WARNINGS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SUNDAY EVENING
FOR SOUTH CENTRAL MINNESOTA.

LAT...LON 4410 9368 4411 9385 4420 9379 4420 9354
TIME...MOT...LOC 0058Z 213DEG 10KT 4413 9376

$$

JLT

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 7:15 PM CDTSpecial Weather StatementMPXWaseca45 min
Jun 21, 7:25 PM CDTTornado WarningMPXBlue Earth, Faribault, Freeborn, Waseca65 min
Jun 21, 8:08 PM CDTTornado WarningMPXFaribault, Freeborn67 min
Jun 21, 8:19 PM CDTAreal Flood AdvisoryMPXFaribault3 hr
Jun 21, 8:28 PM CDTTornado WarningMPXFaribault, Freeborn32 min
Jun 21, 9:04 PM CDTAreal Flood AdvisoryMPXFreeborn4 hr
Jun 21, 9:07 PM CDTTornado WarningMPXFreeborn53 min
Jun 21, 9:20 PM CDTTornado WarningMPXFreeborn40 min
Jun 21, 9:59 PM CDTTornado WarningMPXFreeborn34 min
Jun 21, 10:44 PM CDTSpecial Weather StatementMPXFreeborn31 min
Jun 22, 3:44 PM CDTHeat AdvisoryMPXHennepin, Ramsey12 hr

Nearby

Tornado Warnings in Minnesota, 2009Every tornado warning in 2009Tornadoes in 2009

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.