Alert archive / Wisconsin / Special Weather Statements in 2011

Special Weather Statement, NWS Twin Cities, MN

August 1, 2011Barron County, Chippewa County, Wisconsin

NWS Twin Cities, MN issued this special weather statement at Aug 1, 2011, 9:09 PM CDT for Barron County, Chippewa County, Wisconsin. It was in force for 81 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
Aug 1, 2011, 9:09 PM CDT (02:09 UTC)
Expired
Aug 1, 2011, 10:30 PM CDT
In force
81 min
Issued by
NWS Twin Cities, MN

Counties Barron County, WI, Chippewa County, WI

The radar

The Minneapolis radar (KMPX), 159 km from the middle of the area, began a volume at 02:09 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, 2.2 hours before the alert went out and 161 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 2011-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3 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 2011-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 308 square meters per square second.193958Sfc1 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
3 J/kg
Mixed-layer CIN
-595 J/kg
Mixed-layer LCL
1515 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
308 m²/s²
0-3 km storm-relative helicity
808 m²/s²
Significant tornado parameter
0.0
Supercell composite
9.9

Open this sounding in Storm Lab

The text

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

686 
WWUS83 KMPX 020209
SPSMPX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
909 PM CDT MON AUG 1 2011

WIZ014>016-025-027-028-020330-
BARRON-CHIPPEWA-DUNN-EAU CLAIRE-POLK-RUSK-
909 PM CDT MON AUG 1 2011

...THUNDERSTORMS MOVING INTO/DEVELOPING OVER BARRON...CHIPPEWA...
DUNN...EAU CLAIRE...POLK AND RUSK COUNTIES THROUGH 1030 PM CDT...

AT 905 PM CDT...WEATHER SERVICE RADAR WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM BARRONETT TO 5 MILES SOUTH
OF CHETEK TO 3 MILES SOUTHEAST OF ELK MOUND. THESE STORMS WERE MOVING
EAST AT 25 MPH.

PEA SIZE HAIL...WINDS UP TO 40 MPH...AND HEAVY DOWNPOURS ARE EXPECTED
WITH THESE STORMS.

* LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  BARRON.
  BARRONETT.
  NEW AUBURN.
  SUMNER.
  CANTON.
  LAKE HALLIE.
  RICE LAKE.
  CHETEK.
  BLOOMER.
  CHIPPEWA FALLS.
  EAU CLAIRE.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO THE
STORM TO BE STRUCK BY LIGHTNING. SEEK SAFE SHELTER IMMEDIATELY.

&&

LAT...LON 4475 9107 4476 9176 4525 9177 4569 9221
      4569 9215 4565 9214 4565 9146 4524 9108
TIME...MOT...LOC 0207Z 270DEG 22KT 4562 9200 4525 9163
          4485 9163

$$

BAP

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 12:00 AM CDTRiver Flood WarningMPXTodd57 hr
Aug 2, 5:26 AM CDTSevere Thunderstorm WarningMPXChippewa, Lac qui Parle, Swift, Yellow Medicine64 min
Aug 2, 6:06 AM CDTSpecial Weather StatementMPXPope, Stevens54 min
Aug 2, 6:41 AM CDTSevere Thunderstorm WarningMPXKandiyohi, Pope, Stearns, Swift51 min
Aug 2, 6:56 AM CDTSevere Thunderstorm WarningMPXChippewa, Kandiyohi, Meeker, Swift64 min
Aug 2, 7:23 AM CDTSevere Thunderstorm WarningMPXMeeker, Sherburne, Stearns, Wright67 min
Aug 2, 7:24 AM CDTSpecial Weather StatementMPXBenton, Carver, Isanti, McLeod, Sherburne, Sibley and 1 more36 min
Aug 2, 7:39 AM CDTSevere Thunderstorm WarningMPXBenton, Stearns51 min
Aug 2, 7:57 AM CDTSevere Thunderstorm WarningMPXAnoka, Hennepin, Isanti, Ramsey, Sherburne, Wright48 min
Aug 2, 8:05 AM CDTSevere Thunderstorm WarningMPXBenton, Isanti, Kanabec, Mille Lacs55 min
Aug 2, 8:31 AM CDTSevere Thunderstorm WarningMPXAnoka, Chisago, Isanti, Washington74 min
Aug 1, 10:36 PM CDTSpecial Weather StatementMPXRusk54 min
Aug 2, 3:29 AM CDTSpecial Weather StatementMPXRusk46 min
Aug 2, 4:17 AM CDTSpecial Weather StatementMPXBarron, Polk, Rusk58 min
Aug 2, 4:36 AM CDTSevere Thunderstorm WarningMPXBarron, Polk, Rusk54 min
Aug 2, 4:44 AM CDTAreal Flood AdvisoryMPXBarron, Chippewa, Dunn, Polk, Rusk6 hr
Aug 2, 5:29 AM CDTSevere Thunderstorm WarningMPXBarron, Chippewa, Dunn, Rusk61 min
Aug 2, 9:13 AM CDTSevere Thunderstorm WarningMPXBarron, Polk62 min
Aug 2, 9:42 AM CDTSevere Thunderstorm WarningMPXBarron, Rusk93 min
Aug 2, 9:56 AM CDTFlash Flood WarningMPXBarron, Rusk5 hr

Nearby

Special Weather Statements in Wisconsin, 2011Every special weather statement in 2011

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.