Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 52, NWS Twin Cities, MN

April 18, 2002Dunn County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Apr 18, 2002, 4:28 PM CDT for Dunn County, Wisconsin. It was in force for 32 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
Apr 18, 2002, 4:28 PM CDT (21:28 UTC)
Expired
Apr 18, 2002, 5:00 PM CDT
In force
32 min
Issued by
NWS Twin Cities, MN
Area
Counties, with a storm outline in the text

County Dunn County, WI

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.5 hours before the alert went out and 145 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 2002-04-18Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2002-04-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 745 square meters per square second.1939587897Sfc1 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
1064 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
745 m²/s²
0-3 km storm-relative helicity
912 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 182128
SVRMSP
WIC033-182200-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
428 PM CDT THU APR 18 2002

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
   SOUTHEAST DUNN COUNTY IN WEST CENTRAL WISCONSIN

* UNTIL 500 PM CDT

* AT 428 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE
  HAIL OVER DUNN COUNTY...OR ABOUT 9 MILES NORTHWEST OF MONDOVI...
  MOVING NORTHEAST AT 20 MPH.

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  ROCK FALLS
  CARYVILLE 

THIS IS A DANGEROUS STORM WITH LARGE HAIL...STAY INDOORS AWAY FROM
WINDOWS.

LAT...LON 4472 9192 4470 9168 4476 9167 4485 9167

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 18, 3:52 AM CDTSevere Thunderstorm WarningMPXPierce, Saint Croix53 min
Apr 18, 4:49 AM CDTSevere Thunderstorm WarningMPXBarron, Dunn41 min
Apr 18, 5:24 AM CDTTornado WarningMPXDunn21 min
Apr 18, 5:36 AM CDTSevere Thunderstorm WarningMPXBarron24 min
Apr 18, 5:42 AM CDTSevere Thunderstorm WarningMPXChippewa33 min
Apr 18, 4:12 PM CDTSevere Thunderstorm WarningMPXChippewa63 min
Apr 18, 4:20 PM CDTSevere Thunderstorm WarningMPXEau Claire, Pepin40 min
Apr 18, 4:57 PM CDTSevere Thunderstorm WarningMPXEau Claire63 min
Apr 18, 5:34 PM CDTSevere Thunderstorm WarningMPXRusk26 min
Apr 18, 5:57 PM CDTSevere Thunderstorm WarningMPXEau Claire63 min
Apr 18, 6:59 PM CDTSevere Thunderstorm WarningMPXChippewa31 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2002Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive.