Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 44, NWS Twin Cities, MN

June 24, 2003Pierce County, Polk County, Saint Croix County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 24, 2003, 11:32 PM CDT for Pierce County, Polk County, Saint Croix County, Wisconsin. It was in force for 43 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 24, 2003, 11:32 PM CDT (04:32 UTC)
Expired: Jun 25, 2003, 12:15 AM CDT
In force: 43 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

Counties Pierce County, WI, Polk County, WI, Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 83 km from the middle of the area, began a volume at 04:35 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.

Issued	Product	Office	Lasted
Jun 24, 8:15 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 4.5 hours before the alert went out and 86 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 5332 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 859 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 171 m²/s²
0-3 km storm-relative helicity: 288 m²/s²
Significant tornado parameter: 7.4
Supercell composite: 34.1

Open this sounding in Storm Lab

The text

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

205 
WUUS53 KMPX 250432
SVRMPX
WIC093-095-109-250515-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1132 PM CDT TUE JUN 24 2003

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  POLK COUNTY IN NORTHWEST WISCONSIN
  ST. CROIX COUNTY IN WEST CENTRAL WISCONSIN
  PIERCE COUNTY IN WEST CENTRAL WISCONSIN

* UNTIL 1215 AM CDT

* AT 1132 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH
  DAMAGING WINDS 2 MILES WEST OF SOMERSET...OR ABOUT 9 MILES WEST OF
  NEW RICHMOND...MOVING NORTHEAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  AMERY.
  ELLSWORTH.
  HUDSON.
  NEW RICHMOND.
  RIVER FALLS.

THIS IS A DANGEROUS STORM...STAY INDOORS AWAY FROM WINDOWS. SEVERE
THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING.

LAT...LON 4518 9276 4479 9277 4462 9249 4463 9218
          4541 9219

$$

RJN/SEB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 24, 8:29 PM CDT	Severe Thunderstorm Warning	MPX	Polk	46 min
Jun 24, 8:43 PM CDT	Tornado Warning	MPX	Polk	47 min
Jun 24, 10:27 PM CDT	Flash Flood Warning	MPX	Polk	2 hr
Jun 24, 11:21 PM CDT	Flash Flood Warning	MPX	Polk, Saint Croix	4 hr
Jun 25, 12:16 AM CDT	Severe Thunderstorm Warning	MPX	Barron, Dunn, Polk, Saint Croix	44 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2003 Every severe thunderstorm warning in 2003

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.