Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 89, NWS Milwaukee, WI

September 2, 2002Fond du Lac County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Sep 2, 2002, 9:55 PM CDT for Fond du Lac County, Wisconsin. It was in force for 35 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
Sep 2, 2002, 9:55 PM CDT (02:55 UTC)
Expired
Sep 2, 2002, 10:30 PM CDT
In force
35 min
Issued by
NWS Milwaukee, WI
Area
Whole counties

County Fond du Lac County, WI

The radar

The Milwaukee radar (KMKX), 88 km from the middle of the area, began a volume at 02:56 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 nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 2.9 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-pSkew-T log-p diagram, Green Bay/Straub, WI at 00:00Z on 2002-09-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1990 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, Green Bay/Straub, WI at 00:00Z on 2002-09-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 201 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
1990 J/kg
Mixed-layer CIN
-95 J/kg
Mixed-layer LCL
1037 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
201 m²/s²
0-3 km storm-relative helicity
193 m²/s²
Significant tornado parameter
1.5
Supercell composite
5.9

Open this sounding in Storm Lab

The text

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

461 
WUUS53 KMKX 030255
SVRMKE
WIC039-030330-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
954 PM CDT MON SEP 2 2002

THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEAST FOND DU LAC COUNTY IN EAST CENTRAL WISCONSIN

* UNTIL 1030 PM CDT

* AT 954 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM NEAR CAMPBELLSPORT...OR ABOUT 8 MILES NORTH OF
  KEWASKUM...MOVING EAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
RURAL FOND DU LAC COUNTY AT 1000 PM CDT

SEVERE THUNDERSTORMS CAN AND DO PRODUCE TORNADOES WITH LITTLE OR NO
ADVANCE WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS
SPOTTED.

DAVIS

The office that day

Everything else NWS Milwaukee, WI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 2, 8:44 PM CDTSevere Thunderstorm WarningMKXGreen Lake, Marquette46 min
Sep 2, 9:03 PM CDTSevere Thunderstorm WarningMKXFond du Lac57 min
Sep 2, 9:07 PM CDTTornado WarningMKXFond du Lac53 min
Sep 2, 9:07 PM CDTTornado WarningMKXFond du Lac53 min
Sep 2, 9:28 PM CDTSevere Thunderstorm WarningMKXDodge62 min
Sep 2, 9:35 PM CDTSpecial Marine WarningMKX2 hr
Sep 2, 9:35 PM CDTSpecial Marine WarningMKX2 hr
Sep 2, 9:47 PM CDTSevere Thunderstorm WarningMKXOzaukee, Sheboygan, Washington58 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; radar from the NEXRAD Level II archive.