Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 133, NWS Twin Cities, MN

June 20, 2007Barron County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 20, 2007, 6:42 PM CDT for Barron County, Wisconsin. 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
Jun 20, 2007, 6:42 PM CDT (23:42 UTC)
Expired
Jun 20, 2007, 7:45 PM CDT
In force
63 min
Issued by
NWS Twin Cities, MN
Area
Counties, with a storm outline in the text

County Barron County, WI

The radar

The Minneapolis radar (KMPX), 148 km from the middle of the area, began a volume at 23:43 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 20, 2:10 PM CDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 11.7 hours before the alert went out and 320 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, Green Bay/Straub, WI at 12:00Z on 2007-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Green Bay/Straub, WI at 12:00Z on 2007-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 110 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
1326 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
110 m²/s²
0-3 km storm-relative helicity
137 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KMPX 202341
SVRMPX
WIC005-210045-
/O.NEW.KMPX.SV.W.0133.070620T2342Z-070621T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
642 PM CDT WED JUN 20 2007

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BARRON COUNTY IN NORTHWEST WISCONSIN...

* UNTIL 745 PM CDT

* AT 639 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM...
  CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 4 MILES SOUTHEAST OF
  CUMBERLAND...OR ABOUT 12 MILES WEST OF RICE LAKE...AND MOVING
  SOUTHEAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BARRON...
  RICE LAKE...
  CAMERON...
  CHETEK...

STAY INDOORS...AND AWAY FROM WINDOWS.

LAT...LON 4561 9214 4537 9215 4526 9155 4560 9156

$$

KAT
1 follow-up statement
000 
WWUS53 KMPX 210045
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
745 PM CDT WED JUN 20 2007

WIC005-210055-
/O.EXP.KMPX.SV.W.0133.000000T0000Z-070621T0045Z/
BARRON WI-
745 PM CDT WED JUN 20 2007

...THE SEVERE THUNDERSTORM WARNING FOR BARRON COUNTY EXPIRES AT 745
PM CDT...

THE STORMS THAT PROMPTED THE WARNING HAD DECREASED TO BELOW SEVERE 
LIMITS...ALTHOUGH HEAVY RAIN AND PEA SIZED HAIL WILL REMAIN POSSIBLE 
NEAR RICE LAKE. ADDITIONAL STORM DEVELOPMENT WILL BE POSSIBLE THROUGH 
THE EVENING...SO REMAIN ALERT FOR ADDITIONAL WARNINGS.

PLEASE RELAY CURRENT AND PAST SEVERE WEATHER TO LOCAL LAW 
ENFORCEMENT FOR RELAY TO THE NATIONAL WEATHER SERVICE.

LAT...LON 4561 9214 4537 9215 4526 9155 4560 9156

$$

KAT

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 20, 3:45 PM CDTSevere Thunderstorm WarningMPXRusk45 min
Jun 20, 5:14 PM CDTSevere Thunderstorm WarningMPXPolk46 min
Jun 20, 5:43 PM CDTSevere Thunderstorm WarningMPXBarron62 min
Jun 20, 6:18 PM CDTSevere Thunderstorm WarningMPXPolk57 min
Jun 20, 6:30 PM CDTSevere Thunderstorm WarningMPXRusk60 min

Nearby

Severe 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.