Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 15, NWS Green Bay, WI

May 12, 2000Waupaca County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at May 12, 2000, 1:59 PM CDT for Waupaca County, Wisconsin. It was in force for 61 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: May 12, 2000, 1:59 PM CDT (18:59 UTC)
Expired: May 12, 2000, 3:00 PM CDT
In force: 61 min
Issued by: NWS Green Bay, WI
Area: Whole counties

County Waupaca County, WI

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 7.0 hours before the alert went out and 69 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: 15 J/kg
Mixed-layer CIN: -508 J/kg
Mixed-layer LCL: 545 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 122 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KGRB 121859
SVRGRB
WIC135-122000-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
159 PM CDT FRI MAY 12 2000

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WAUPACA COUNTY IN NORTHEASTERN WISCONSIN

* UNTIL 300 PM CDT

* AT 155 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
  SEVERE THUNDERSTORM 5 MILES NORTH OF WILD ROSE.  THE STORM WAS
  MOVING NORTHEAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WAUPACA BY 215 PM CDT
  ROYALTON BY 230 PM CDT

THE STORM CONTAINS HAIL UP TO ONE INCH IN DIAMETER. GO INSIDE A
STURDY BUILDING AND STAY AWAY FROM WINDOWS.

GRA/TAE

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 Green Bay, WI wrote its last area forecast discussion before this severe thunderstorm warning went out at May 12, 4:15 AM CDT, 9 hours 44 minutes earlier.

Area forecast discussion, May 12, 4:15 AM CDT, 9 hours 44 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREEN BAY WI
415 AM CDT FRI MAY 12 2000

...MAIN FORECAST CHALLENGES ARE CHANCE FOR RAIN AND THEN AFFECTS OF
CLOUDS ON TEMPERATURES...

0830Z IR SHOWED INCREASING MID AND HIGH LEVEL CLOUDS ASSOCIATED WITH
UPPER JET CORE THAT EXTENDED FROM THE DAKOTAS INTO MINNESOTA AS ANALYZED
ON 00Z 300 MB CHART.  RADAR SUMMARY SHOWED THAT UNDER THE ENTRANCE
REGION OF THE JET...SCATTERED SHOWERS WERE INCREASING FROM EASTERN
NEBRASKA INTO CENTRAL MINNESOTA.  THUNDERSTORMS WERE DEVELOPING ACROSS
NORTHERN IOWA JUST NORTH AND WEST OF THE SURFACE COLD FRONT.  A LARGE
CLUSTER OF THUNDERSTORMS THAT WAS IN NORTHERN MISSOURI AND SOUTHERN IOWA
WAS WEAKENING.  THIS WEAKENING SHOULD ALLOW CONTINUED MOISTURE TO FLOW
NORTH INTO THE AREA OF SHOWERS AND THUNDERSTORMS IN IOWA AND MINNESOTA.

MODELS INDICATE UPPER JET AND ASSOCIATED DIVERGENCE WILL MOVE OVER MOST
OF FORECAST AREA TODAY AND LINGER ACROSS THE EAST THIS EVENING.  SURFACE
FRONT LOOKS AS IF IT WILL TEMPORARILY STALL...WITH A WEAK WAVE OF LOW
PRESSURE RIDING NORTHEAST ALONG THE FRONT.  THE POSITION OF THE FRONT
ACROSS THE EXTREME SOUTHEAST PART OF THE FORECAST AREA SHOULD PROVIDE
THE BEST CHANCE FOR THUNDERSTORMS IN THAT REGION.  CONVECTIVE DAY 1
OUTLOOK HAS PLACED GENERAL THUNDER OVER ALL BUT NORTHWEST CORNER OF
FORECAST AREA.

MODEL GUIDANCE SHOWS VERY LOW CHANCES FOR PRECIPITATION ON SATURDAY...
BUT ABUNDANT LOW LEVEL MOISTURE BEHIND CANADIAN FRONT...PLUS STEEPENING
LAPSE RATES SHOULD PROVIDE THE CHANCE FOR MAINLY AFTERNOON SHOWERS.

WARM FRONT ONLY REACHED AS FAR SOUTH AS EXTREME SOUTHEAST CORNER OF
FORECAST AREA AROUND MIDNIGHT.  COLD FRONT HAS MOVE JUST FAR ENOUGH EAST
SO THAT WARM AIR HAS BEEN PUSHED A LITTLE OFF TO THE EAST.  SOME WARM
AIR MAY MAKE ANOTHER RUN THIS AFTERNOON INTO SOUTHEAST CORNER AS SURFACE
WAVE BACKS THE FRONT TO THE NORTHWEST A LITTLE.  WARMING SHOULD STILL BE
LIMITED THOUGH DUE TO DEEP CLOUDS AND WIDESPREAD PRECIPITATION.  REST OF
FORECAST AREA DEEP WITHIN THE COOLER AIR MASS.  OVERALL WILL FOLLOW MUCH
COOLER ETA 2 METER TEMPERATURES WHICH SEEM TO DO WELL IN SITUATIONS
WHERE CLOUDS AND AIR MASS CHANGES ARIE TAKING PLACE.

.GRB...NONE.

KENNEDY
WWW.CRH.NOAA.GOV/GRB

In the hours before

Local storm report, May 12, 10:27 AM CDT, 3 hours 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
1027 AM CDT FRI MAY 12 2000

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1025 AM    1 W COLOMA                WI   1 INCH HAIL
05/12/00   WAUSHARA

1027 AM    COLOMA                    WI   1.5 INCH HAIL
05/12/00   WAUSHARA                       HAIL COVERING THE GROUND

JKL/AL

Local storm report, May 12, 10:42 AM CDT, 3 hours 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
1042 AM CDT FRI MAY 12 2000

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1038 AM    2 MILES E COLOMA          WI   2.75 INCH HAIL
05/12/00   WAUSHARA

1039 AM    COLOMA                    WI   2 INCH HAIL
05/12/00   WAUSHARA                       HEAVY CAR DAMAGE, SIDING
                                          DAMAGE TO HOUSE

TE

Local storm report, May 12, 10:49 AM CDT, 3 hours 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
1049 AM CDT FRI MAY 12 2000

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1040 AM    NESHKORO                  WI   1.75 INCH HAIL
05/12/00   WAUSHARA

1043 AM    DAKOTA                    WI   2.75 INCH HAIL
05/12/00   WAUSHARA                       MAJOR DAMAGE TO BUILDINGS

1049 AM    RED GRANITE               WI   1.75 INCH HAIL
05/12/00   WAUSHARA

TE

Local storm report, May 12, 11:17 AM CDT, 2 hours 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
1117 AM CDT FRI MAY 12 2000

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1105 AM    OMRO                      WI   1.75 INCH HAIL
05/12/00   WINNEBAGO

1110 AM    WINNECONNE                WI   1.75 INCH HAIL             A
05/12/00   WINNEBAGO

1115 AM    OSHKOSH                   WI   1.75 INCH HAIL
05/12/00   WINNEBAGO

TE

Local storm report, May 12, 11:37 AM CDT, 2 hours 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
1137 AM CDT FRI MAY 12 2000

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1128 AM    CHILTON                   WI   1.75 INCH HAIL
05/12/00   CALUMET

1133 AM    STOCKBRIDGE               WI   1.75 INCH HAIL             s
05/12/00   CALUMET                        HEAVY HAIL DAMAGE

1135 AM    2 MILES N CHILTON         WI   2 INCH HAIL
05/12/00   CALUMET

TE

Local storm report, May 12, 12:15 PM CDT, 1 hour 44 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
1215 PM CDT FRI MAY 12 2000

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1138 AM    CHILTON                   WI   60 MPH WIND GUST
05/12/00   CALUMET                        1 INCH HAIL

1155 AM    ST NAZIANZ                WI   2 INCH HAIL
05/12/00   MANITOWOC                      HEAVY HAIL DAMAGE

1155 AM    VALDERS                   WI   2 INCH HAIL
05/12/00   CALUMET                        HEAVY HAIL DAMAGE

1200 AM    2 W MANITOWOC             WI   2.75 INCH HAIL
05/12/00   MANITOWOC

TE

The office that day

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

Issued	Product	Office	Counties	Lasted
May 12, 10:05 AM CDT	Severe Thunderstorm Warning	GRB	Waushara	40 min
May 12, 10:43 AM CDT	Severe Thunderstorm Warning	GRB	Waushara	32 min
May 12, 10:50 AM CDT	Severe Thunderstorm Warning	GRB	Winnebago	40 min
May 12, 11:09 AM CDT	Severe Thunderstorm Warning	GRB	Calumet	51 min
May 12, 11:28 AM CDT	Severe Thunderstorm Warning	GRB	Manitowoc	47 min
May 12, 2:22 PM CDT	Severe Thunderstorm Warning	GRB	Outagamie	48 min
May 12, 2:28 PM CDT	Severe Thunderstorm Warning	GRB	Brown	62 min
May 12, 2:38 PM CDT	Severe Thunderstorm Warning	GRB	Shawano	62 min
May 12, 3:08 PM CDT	Severe Thunderstorm Warning	GRB	Oconto	47 min
May 12, 3:16 PM CDT	Severe Thunderstorm Warning	GRB	Door, Kewaunee	64 min
May 12, 4:25 PM CDT	Severe Thunderstorm Warning	GRB	Calumet, Manitowoc	50 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.