Alert archive / Wisconsin / Tornado Warnings in 2002

Tornado Warning 13, NWS Twin Cities, MN

June 25, 2002Polk County, Saint Croix County, Wisconsin

NWS Twin Cities, MN issued this tornado warning at Jun 25, 2002, 8:00 PM CDT for Polk County, Saint Croix County, Wisconsin. It was in force for 30 min. 4 reports 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: Jun 25, 2002, 8:00 PM CDT (01:00 UTC)
Expired: Jun 25, 2002, 8:30 PM CDT
In force: 30 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

Counties Polk County, WI, Saint Croix County, WI

What was reported inside it

Time	Report	Where	Remark
Jun 25, 8:10 PM CDT	Hail 1.75	East Farmington, WI
Jun 25, 8:15 PM CDT	Thunderstorm Wind 60 E	Star Prairie, WI	Hundreds of trees down. Several dozen trees down 4 SE Deer Park was the last severe weather to occur from this supercell. It started in Minnesota (8 SW Cambridge, Isanti County) and produced severe weather along a 60 mile path. One tornado, two funnel clouds,
Jun 25, 8:15 PM CDT	Hail 1	Star Prairie, WI
Jun 25, 8:26 PM CDT	Hail 1.75	East Farmington, WI

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

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 25, 6:45 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 1.0 hours before the alert went out and 96 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: 4448 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 1086 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 116 m²/s²
Significant tornado parameter: 2.4
Supercell composite: 16.3

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KMPX 260100
TORMSP
WIC095-109-260130-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
800 PM CDT TUE JUN 25 2002

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN POLK COUNTY IN NORTHWEST WISCONSIN
  ST. CROIX COUNTY IN WEST CENTRAL WISCONSIN

* UNTIL 830 PM CDT

* AT 800 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A
  TORNADO 7 MILES SOUTHWEST OF DRESSER...OR ABOUT 13 MILES NORTHWEST
  OF NEW RICHMOND...MOVING SOUTHEAST AT 25 MPH.

* SOME LOCATIONS IN THE PATH OF THIS TORNADO INCLUDE...
  AMERY.
  NEW RICHMOND.

GO TO THE BASEMENT OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR

LAT...LON 4513 9275 4503 9214 4537 9219 4540 9265

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 25, 8:19 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa	41 min
Jun 25, 8:34 PM CDT	Severe Thunderstorm Warning	MPX	Barron, Dunn, Polk, Saint Croix	56 min
Jun 25, 9:00 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa	60 min
Jun 25, 9:07 PM CDT	Severe Thunderstorm Warning	MPX	Pierce	38 min
Jun 25, 9:08 PM CDT	Severe Thunderstorm Warning	MPX	Rusk	52 min
Jun 25, 9:29 PM CDT	Severe Thunderstorm Warning	MPX	Dunn	46 min
Jun 25, 9:37 PM CDT	Flash Flood Warning	MPX	Chippewa	4 hr
Jun 25, 9:49 PM CDT	Severe Thunderstorm Warning	MPX	Pierce	41 min
Jun 25, 9:53 PM CDT	Severe Thunderstorm Warning	MPX	Eau Claire, Pepin	37 min
Jun 25, 10:23 PM CDT	Flash Flood Warning	MPX	Dunn	3 hr
Jun 25, 10:50 PM CDT	Flash Flood Warning	MPX	Eau Claire, Pepin	3 hr

Nearby

Tornado Warnings in Wisconsin, 2002 Every tornado warning in 2002 Tornadoes in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.