Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 150, NWS Twin Cities, MN

June 18, 2001Polk County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 18, 2001, 6:58 AM CDT for Polk 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 counties it named.

The facts

Issued
Jun 18, 2001, 6:58 AM CDT (11:58 UTC)
Expired
Jun 18, 2001, 7:30 AM CDT
In force
32 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Polk County, WI

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 18, 5:15 AM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 12.0 hours before the alert went out and 113 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 2001-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 38 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 2001-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 116 square meters per square second.19395878Sfc1 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
38 J/kg
Mixed-layer CIN
-195 J/kg
Mixed-layer LCL
1536 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
116 m²/s²
0-3 km storm-relative helicity
289 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 181159
SVRMSP

WIC095-181230-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
658 AM CDT MON JUN 18 2001

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  POLK COUNTY IN WEST CENTRAL WISCONSIN

* UNTIL 730 AM CDT

* AT 658 AM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE
  HAIL 6 MILES WEST OF CLAYTON...OR ABOUT 4 MILES NORTHEAST OF
  AMERY...MOVING EAST AT 40 MPH.

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  CLAYTON.

THIS IS A DANGEROUS STORM WITH LARGE HAIL...STAY INDOORS AWAY FROM
WINDOWS. LARGE HAIL HAS BEEN REPORTED WITH THIS STORM. THIS EXTENDS
THE WARNING PREVIOUSLY IN EFFECT FOR POLK COUNTY.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 17, 7:35 PM CDTSevere Thunderstorm WarningMPXPierce40 min
Jun 17, 7:51 PM CDTSevere Thunderstorm WarningMPXDunn, Pepin39 min
Jun 18, 6:06 AM CDTSevere Thunderstorm WarningMPXPolk54 min
Jun 18, 6:15 AM CDTSevere Thunderstorm WarningMPXDunn, Saint Croix45 min
Jun 18, 6:29 AM CDTSevere Thunderstorm WarningMPXBarron46 min
Jun 18, 7:15 AM CDTSevere Thunderstorm WarningMPXBarron30 min
Jun 18, 8:55 AM CDTSevere Thunderstorm WarningMPXDunn35 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2001Every severe thunderstorm warning in 2001

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.