Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 6, NWS Twin Cities, MN

May 5, 2009Barron County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at May 5, 2009, 3:51 PM CDT for Barron County, Wisconsin. It was in force for 54 min. 1 report 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
May 5, 2009, 3:51 PM CDT (20:51 UTC)
Expired
May 5, 2009, 4:45 PM CDT
In force
54 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon

County Barron County, WI

The radar

The Minneapolis radar (KMPX), 147 km from the middle of the area, began a volume at 20:54 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
May 5, 4:05 PM CDTHAIL 0.883 N Prairie Farm, WISHERRIF DEPUTY REPORTED PEA TO NICKLE SIZE HAIL COVERING THE GROND ON COUNTY ROAD F.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 8.9 hours before the alert went out and 149 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 12:00Z on 2009-05-05Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2009-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 146 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
-141 J/kg
Mixed-layer LCL
1042 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
146 m²/s²
0-3 km storm-relative helicity
61 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 052051
SVRMPX
WIC005-052145-
/O.NEW.KMPX.SV.W.0006.090505T2051Z-090505T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
351 PM CDT TUE MAY 5 2009

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

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

* UNTIL 445 PM CDT

* AT 351 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
  PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 5 MILES
  NORTHWEST OF PRAIRIE FARM...OR ABOUT 14 MILES EAST OF AMERY...AND
  MOVING EAST AT 20 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  PRAIRIE FARM...
  HILLSDALE...
  BARRON...
  RICE LAKE...
  CHETEK...
  CAMERON...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

&&

LAT...LON 4554 9169 4527 9163 4522 9211 4537 9215
TIME...MOT...LOC 2052Z 254DEG 16KT 4528 9206

$$
2 follow-up statements
000 
WWUS53 KMPX 052110
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
410 PM CDT TUE MAY 5 2009

WIC005-052145-
/O.CON.KMPX.SV.W.0006.000000T0000Z-090505T2145Z/
BARRON WI-
410 PM CDT TUE MAY 5 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR SOUTHERN BARRON COUNTY...

AT 409 PM CDT...RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM...
CAPABLE OF PRODUCING QUARTER SIZE HAIL. THE SEVERE STORM WAS LOCATED
4 MILES NORTH OF PRAIRIE FARM...AND MOVING EAST AT 15 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE...HILLSDALE...DALLAS...
BARRON...CHETEK AND CAMERON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

&&

LAT...LON 4523 9201 4539 9208 4554 9169 4527 9163
TIME...MOT...LOC 2110Z 256DEG 15KT 4529 9195

$$
000 
WWUS53 KMPX 052129
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
429 PM CDT TUE MAY 5 2009

WIC005-052145-
/O.CON.KMPX.SV.W.0006.000000T0000Z-090505T2145Z/
BARRON WI-
429 PM CDT TUE MAY 5 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR CENTRAL BARRON COUNTY...

AT 428 PM CDT...RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM...
CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS 
OF 60 MPH. THE SEVERE STORM WAS LOCATED NEAR HILLSDALE...AND MOVING 
EAST AT 15 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE...CAMERON AND CHETEK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS AND LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 4525 9185 4544 9192 4554 9169 4527 9163
TIME...MOT...LOC 2129Z 256DEG 15KT 4533 9183

$$

JLT

The office that day

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

IssuedProductOfficeCountiesLasted
May 5, 2:25 PM CDTSevere Thunderstorm WarningMPXBarron, Dunn, Polk, Saint Croix65 min
May 5, 4:44 PM CDTSevere Thunderstorm WarningMPXBarron, Rusk61 min
May 5, 5:15 PM CDTSevere Thunderstorm WarningMPXPolk30 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2009Every severe thunderstorm warning 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.