Alert archive / Minnesota / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 65, NWS Twin Cities, MN

June 7, 2007Washington County, Minnesota; Saint Croix County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 7, 2007, 3:26 AM CDT for Washington County, Minnesota; Saint Croix County, Wisconsin. It was in force for 34 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
Jun 7, 2007, 3:26 AM CDT (08:26 UTC)
Expired
Jun 7, 2007, 4:00 AM CDT
In force
34 min
Issued by
NWS Twin Cities, MN
Area
Counties, with a storm outline in the text

Counties Washington County, MN, Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 71 km from the middle of the area, began a volume at 08:27 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

Minneapolis, MN (KMPX), launched 00:00Z, 8.4 hours before the alert went out and 73 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 2007-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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 2007-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 342 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
914 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
342 m²/s²
0-3 km storm-relative helicity
780 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.5

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KMPX 070826
SVRMPX
MNC163-WIC109-070930-
/O.NEW.KMPX.SV.W.0065.070607T0826Z-070607T0930Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
326 AM CDT THU JUN 7 2007

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WASHINGTON COUNTY IN EAST CENTRAL MINNESOTA...
  ST. CROIX COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 430 AM CDT

* AT 323 AM CDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
  THUNDERSTORMS...CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS.
   THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 7 MILES WEST
  OF STILLWATER TO HUDSON...AND MOVING NORTHEAST AT 65 MPH.

* LOCATIONS IMPACTED INCLUDE...
  SOMERSET...
  NEW RICHMOND...

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.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

LAT...LON 4503 9303 4489 9263 4520 9218 4521 9275

$$

LS
3 follow-up statements
000 
WWUS53 KMPX 070839
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
338 AM CDT THU JUN 7 2007

MNC163-070848-
/O.CAN.KMPX.SV.W.0065.000000T0000Z-070607T0930Z/
WASHINGTON MN-
338 AM CDT THU JUN 7 2007

...THE SEVERE THUNDERSTORM WARNING FOR WASHINGTON COUNTY IS
CANCELLED...

LAT...LON 4504 9272 4491 9252 4520 9218 4521 9260

$$

WIC109-070930-
/O.CON.KMPX.SV.W.0065.000000T0000Z-070607T0930Z/
ST. CROIX WI-
338 AM CDT THU JUN 7 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 AM CDT
FOR ST. CROIX COUNTY...

AT 336 AM CDT...DOPPLER RADAR CONTINUED TO INDICATE A LINE OF SEVERE
THUNDERSTORMS...CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS. 
THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 4 MILES
NORTHWEST OF BOARDMAN TO 3 MILES NORTH OF HAMMOND...AND MOVING
NORTHEAST AT 55 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE HUNTINGTON...HOULTON...
FOREST...CYLON...BURKHARDT...BOARDMAN...STAR PRAIRIE...ROBERTS...NEW
RICHMOND AND HAMMOND.

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS

LAT...LON 4504 9272 4491 9252 4520 9218 4521 9260

$$

LS
000 
WWUS53 KMPX 070844
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
343 AM CDT THU JUN 7 2007

WIC109-070930-
/O.CON.KMPX.SV.W.0065.000000T0000Z-070607T0930Z/
ST. CROIX WI-
343 AM CDT THU JUN 7 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 AM CDT
FOR ST. CROIX COUNTY...

AT 338 AM CDT...HALF DOLLAR SIZED HAIL WAS REPORTED IN HAMMOND.  
THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 4 MILES 
NORTHWEST OF NEW RICHMOND TO 5 MILES SOUTH OF CYLON...AND MOVING 
NORTHEAST AT 55 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE HUNTINGTON...HOULTON...
FOREST...EMERALD...CYLON...BOARDMAN...STAR PRAIRIE...NEW RICHMOND AND
DEER PARK.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

LAT...LON 4504 9272 4496 9217 4520 9218 4521 9260

$$

LS
000 
WWUS53 KMPX 070900
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
400 AM CDT THU JUN 7 2007

WIC109-070910-
/O.CAN.KMPX.SV.W.0065.000000T0000Z-070607T0930Z/
ST. CROIX WI-
400 AM CDT THU JUN 7 2007

...THE SEVERE THUNDERSTORM WARNING FOR ST. CROIX COUNTY IS
CANCELLED...

RADAR INDICATED THAT THE SEVERE THUNDERSTORM HAD MOVED OUT OF THE
WARNED AREA. THUS THE WARNING HAS BEEN CANCELLED.

LAT...LON 4504 9272 4496 9217 4520 9218 4521 9260

$$

LS

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 7, 1:32 AM CDTSevere Thunderstorm WarningMPXBrown, Redwood, Watonwan43 min
Jun 7, 2:09 AM CDTSevere Thunderstorm WarningMPXBrown, Nicollet, Sibley51 min
Jun 7, 2:26 AM CDTSevere Thunderstorm WarningMPXLe Sueur, Rice49 min
Jun 7, 2:36 AM CDTSevere Thunderstorm WarningMPXMcLeod24 min
Jun 7, 2:43 AM CDTSevere Thunderstorm WarningMPXDakota, Rice, Scott32 min
Jun 7, 2:59 AM CDTSevere Thunderstorm WarningMPXCarver, McLeod, Wright35 min
Jun 7, 3:07 AM CDTSevere Thunderstorm WarningMPXDakota, Ramsey, Washington25 min
Jun 7, 4:14 AM CDTWind AdvisoryMPXAnoka, Blue Earth, Brown, Carver, Chippewa, Dakota and 27 more17 hr
Jun 7, 11:33 AM CDTSevere Thunderstorm WarningMPXGoodhue57 min
Jun 7, 11:45 AM CDTTornado WarningMPXGoodhue45 min
Jun 7, 3:21 PM CDTSevere Thunderstorm WarningMPXPope24 min
Jun 7, 5:10 PM CDTSevere Thunderstorm WarningMPXRedwood, Renville50 min
Jun 7, 6:12 PM CDTSevere Thunderstorm WarningMPXMeeker, Wright46 min
Jun 7, 6:27 PM CDTSevere Thunderstorm WarningMPXHennepin33 min
Jun 7, 6:41 PM CDTSevere Thunderstorm WarningMPXAnoka, Isanti, Sherburne49 min
Jun 7, 3:47 AM CDTSevere Thunderstorm WarningMPXBarron, Polk43 min
Jun 7, 3:56 AM CDTSevere Thunderstorm WarningMPXDunn34 min
Jun 7, 4:35 AM CDTSevere Thunderstorm WarningMPXRusk40 min
Jun 7, 12:19 PM CDTSevere Thunderstorm WarningMPXDunn, Saint Croix41 min
Jun 7, 12:48 PM CDTTornado WarningMPXChippewa, Dunn42 min
Jun 7, 1:11 PM CDTSevere Thunderstorm WarningMPXBarron25 min
Jun 7, 1:24 PM CDTTornado WarningMPXChippewa, Rusk51 min
Jun 7, 1:56 PM CDTTornado WarningMPXEau Claire34 min
Jun 7, 2:25 PM CDTTornado WarningMPXEau Claire22 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2007Severe Thunderstorm Warnings in Wisconsin, 2007Every severe thunderstorm warning in 2007

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.