Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 128, NWS Milwaukee, WI

August 22, 2000Sheboygan County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Aug 22, 2000, 4:27 PM CDT for Sheboygan County, Wisconsin. It was in force for 63 min. No storm report in the archive falls 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.

The facts

Issued: Aug 22, 2000, 4:27 PM CDT (21:27 UTC)
Expired: Aug 22, 2000, 5:30 PM CDT
In force: 63 min
Issued by: NWS Milwaukee, WI
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Sheboygan County, WI

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 9.5 hours before the alert went out and 72 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: 849 J/kg
Mixed-layer CIN: -134 J/kg
Mixed-layer LCL: 734 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 145 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.9

Open this sounding in Storm Lab

The text

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

144 
WUUS53 KMKX 222127
SVRMKE
WIC117-222230-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE-SULLIVAN WI
427 PM CDT TUE AUG 22 2000

THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SHEBOYGAN COUNTY IN EAST CENTRAL WISCONSIN

* UNTIL 530 PM CDT

* AT 427 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM NEAR PLYMOUTH...MOVING NORTHEAST AT 15 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE SHEBOYGAN FALLS...KOHLER AND
  HOWARDS GROVE

HAIL UP TO ONE INCH IN DIAMETER AND WINDS GREATER THAN 60 MILES AN
HOUR ARE EXPECTED FROM THIS STORM. SEEK SHELTER IN A STURDY STRUCTURE
UNTIL THE STORM HAS PASSED.

THIS STORM IS CAPABLE OF PRODUCING HEAVY RAINFALL...WHICH MAY FLOOD
LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES. AVOID THESE AREAS
AND DO NOT CROSS FLOODED ROADS AS THEY MAY BE WASHED OUT.

LAT...LON 4376 8810 4363 8793 4399 8733 4418 8760

HENTZ

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 Milwaukee, WI wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 22, 2:40 PM CDT, 1 hour 47 minutes earlier.

Area forecast discussion, Aug 22, 2:40 PM CDT, 1 hour 47 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
240 PM CDT TUE AUG 22 2000

FCST CHALLENGE CENTERS ON CONVECTION IN THE SHORT TERM.

INSTABILITY AXIS...MINUS 8 LI/S...HAS SET UP OVR SRN WI...WITH IA
MVC PULLING OUT OF ERN IA. BROAD SFC TROF HAS TAKEN HOLD OF WI...PER
ANIMATED AWIPS ANAL. MRNG 12Z ANAL ALSO SHOWED H2 100 KT JET PLAYING
A ROLE PROVIDING SUPPORT TO MVC. BUT MAIN STORY IS THE MVC ITSELF AND
ITS IMPACT ON SRN WI THIS EVE. SHOULD BE GOOD SUBSIDENCE FIELD IN
WAKE OF SHRA/TSRA...SO THINK WE CAN WIND THINGS DOWN THIS EVE. THIS
BASED ON PURE EXTRAP OF RAD/SAT TRENDS...THO MODEL RH AND VV FIELDS
IMPLY SOME PCPN MAY LINGER AFT MID. WILL STICK ALONG THE LINES OF
THE FORMER FOR NOW. SHOULD PONT OUT THAT NGM SEEMS TO BE DOING
BETTER JOB WITH QPF.

NEXT CHALLENGE LTR TNGT IS DEGREE OF CLRG AND POSSIBLE FOG
FORMATION. LGT WINDS...LLVL MOIST ADDED FROM RAINS PLUS HIGH DEW
POINTS...SHOULD SPELL FOG. ONLY QUES MARK IS THE CLEARING TNGT.
STILL A LOT OF LOW CLOUDS WRAPPING AROUND MVC IN SRN MN AND IA...SO
CLRG TREND MAY TAKE A WHILE. WL MENTION FOG FOR WED NGT...ESP WITH
LGT WIND REGIME. BETTER RADL CONDS EXPECTED WED NGT TOO.

WK SFC HI PRES AND UPR LEVEL RDGING SHOULD THEN KEEP THINGS QUIET
THRU THU. AVN TRYING TO GENERATE PCPN WED AND THU BUT WILL SIDE
WITH ETA/NGM SOLN FOR NOW AND KEEP POP OUT OF FCST. SOME
INSTABILTY NOTED IN BUFFY SOUNDINGS THO OVERALL DRY AIR...MID
LEVEL INVERSION ARND H650-H750 AND LACK OF FORCING MEANS WILL STICK
TO THE DRY LOOK. AVN FAN POPS ARE NEAR NIL AS WELL.

PREFER A BLEND OF 3 HRLY FWC TEMPS AND FAN.

.UWNMS...12Z RUN NOT AVBL...DID NOTICE 8/22 00Z RUN DID NOT CATCH
ANY QDPF FROM THIS SYS AT ALL.

.MKX...NONE.

COLLAR

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 22, 4:22 PM CDT	Severe Thunderstorm Warning	MKX	Fond du Lac	53 min
Aug 22, 4:45 PM CDT	Severe Thunderstorm Warning	MKX	Milwaukee, Waukesha	45 min
Aug 22, 5:15 PM CDT	Flash Flood Warning	MKX	Sheboygan	105 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2000 Every 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; the sounding from the Mesonet's radiosonde archive.