Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 127, NWS La Crosse, WI

August 14, 2000Clark County, Taylor County, Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at Aug 14, 2000, 8:56 PM CDT for Clark County, Taylor County, Wisconsin. It was in force for 64 min. 5 reports came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued
Aug 14, 2000, 8:56 PM CDT (01:56 UTC)
Expired
Aug 14, 2000, 10:00 PM CDT
In force
64 min
Issued by
NWS La Crosse, WI
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Clark County, WI, Taylor County, WI

The radar

The La Crosse radar (KARX), 156 km from the middle of the area, began a volume at 01:57 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.

What was reported inside it

TimeReportWhereRemark
Aug 14, 9:15 PM CDTHail 0.75Gilman, WI
Aug 14, 9:40 PM CDTHail 0.75Owen, WI
Aug 14, 9:45 PM CDTThunderstorm Wind 52 EOwen, WI
Aug 14, 9:53 PM CDTThunderstorm Wind 52 ELongwood, WI
Aug 14, 9:55 PM CDTHail 0.75Curtiss, 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.

IssuedProductOfficeLasted
Aug 14, 6:15 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 1.9 hours before the alert went out and 213 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 2000-08-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1190 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, Green Bay/Straub, WI at 00:00Z on 2000-08-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 87 square meters per square second.193958Sfc1 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
1190 J/kg
Mixed-layer CIN
-113 J/kg
Mixed-layer LCL
666 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
87 m²/s²
0-3 km storm-relative helicity
105 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.3

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KARX 150200 COR
SVRLSE
WIC019-119-150300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTED FOR NORTHERN CLARK COUNTY
NATIONAL WEATHER SERVICE LA CROSSE WI
856 PM CDT MON AUG 14 2000

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN CLARK COUNTY IN CENTRAL WISCONSIN
  TAYLOR COUNTY IN NORTH CENTRAL WISCONSIN

* UNTIL 1000 PM CDT

* AT 856 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 7 MILES SOUTH OF JUMP RIVER...OR ABOUT 21 MILES
  SOUTHEAST OF LADYSMITH...MOVING SOUTHEAST AT 30 MPH.

* THE SEVERE THUNDERSTORM IS EXPECTED TO BE...
  NEAR LUBLIN AT 915 PM CDT
  NEAR OWEN AT 930 PM CDT
  NEAR MEDFORD AT 935 PM CDT
  NEAR DORCHESTER AT 945 PM CDT

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND GUSTS IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR
YOUR PROTECTION...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT MONDAY EVENING
FOR NORTH CENTRAL WISCONSIN.

NELSON

LAT...LON 4543 9095 4479 9092 4480 9028 4538 9002

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS La Crosse, WI wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 14, 3:10 PM CDT, 5 hours 46 minutes earlier.

Area forecast discussion, Aug 14, 3:10 PM CDT, 5 hours 46 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LA CROSSE WI
310 PM CDT MON AUG 14 2000

FORECAST CONCERNS FOR THIS PACKAGE INCLUDE CONVECTIVE TRENDS TONIGHT
WITH PASSAGE OF FRONTAL BOUNDARY...AND THEN TEMPERATURES TUESDAY
THROUGH WEDNESDAY.

18Z SURFACE ANALYSIS SHOWS LOW PRESSURE OVER EASTERN SOUTH DAKOTA
WITH TRAILING TROUGH/COLD FRONT EXTENDING SOUTHWARD THROUGH CENTRAL
NEBRASKA. WARM FRONT SOMEWHAT HARD TO DISCERN...BUT EXTENDS ACROSS
CENTRAL MINNESOTA INTO NORTHWEST WISCONSIN. MAIN CLOUD SHIELD
ALONG AND TO THE NORTH OF THE WARM FRONT...WITH CLEAR SKIES ACROSS
SOUTHWEST MINNESOTA. CONVECTION OCCURRING ACROSS NORTHERN MINNESOTA
ON NOSE OF 20 KT TO 30 KT LOW LEVEL JET.

12Z MODELS INITIALIZE WELL...BUT AGAIN SHOW SOME DISCREPANCIES IN
THE QPF FIELDS. ONCE AGAIN APPEARS ETA AND AVN HAVE A BIT BETTER
HANDLE ON THE SMALLER FEATURES.

IN THE SHORT TERM...ATMOSPHERE SOUTH OF WARM FRONT REMAINS CAPPED
THIS AFTERNOON WITH 10C PLUS TEMPERATURES AT 700MB. BEST MOISTURE
CONVERGENCE/UPPER LEVEL DIVERGENCE TO REMAIN ACROSS THE NORTHERN HALF
OF MINNESOTA AND NORTHERN WISCONSIN TONIGHT. SHORTWAVE MOVING THROUGH
SOUTHERN CANADA SHOULD ENHANCE CONVECTIVE ACTIVITY LATER THIS
AFTERNOON AND EVENING. FARTHER SOUTH BETTER CHANCES MAY COME WITH
CONVERGENCE ALONG APPROACHING COLD FRONT. THUS WILL STILL CONTINUE
LOWER POPS FROM ROCHESTER...SOUTHEASTWARD INTO SOUTHWEST WISCONSIN.

FRONTAL SYSTEM SHOULD EXIT THE REGION BY MORNING WITH MUCH DRIER AIR
BEING ADVECTED INTO THE REGION. ETA PROGS SURFACE DEWPOINTS (NOW 65
TO 70) TO DROP INTO THE 50S BY TUESDAY AFTERNOON. BY WEDNESDAY...
SURFACE HIGH MOVES EAST WITH RETURN FLOW RE-ESTABLISHING ITSELF
ACROSS THE WESTERN ZONES. WILL GO WITH A LOW POPS WEST AND DRY
ELSEWHERE.

IN THE EXTENDED...UNSETTLED WEATHER TO CONTINUE THROUGH THURSDAY...
BEFORE RIDGE RE-ESTABLISHES ITSELF ACROSS THE AREA. TEMPERATURES
SHOULD DROP BACK TO NEAR OR SLIGHTLY BELOW NORMALS.

GUIDANCE TEMPERATURES RATHER SIMILAR AND SO NOT TO MUCH DEVIATION.

COORDINATED WITH KMKX...KGRB...KMSP

.LSE...NONE.

RABERDING

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 14, 7:25 PM CDTSevere Thunderstorm WarningARXTaylor95 min
Aug 14, 10:00 PM CDTSevere Thunderstorm WarningARXClark15 min
Aug 15, 1:06 AM CDTSevere Thunderstorm WarningARXClark54 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2000Every severe thunderstorm warning in 2000

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; radar from the NEXRAD Level II archive.