Severe Thunderstorm Warning 104, NWS Green Bay, WI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREEN BAY WI
340 PM CDT WED AUG 21 2002

FOR TONIGHT...REGIONAL RADARS CONTINUE TO SHOW SHOWERS AND
THUNDERSTORMS OVER NORTHEAST WISCONSIN SOUTHWEST INTO SOUTHEAST
MINNESOTA AND EASTERN IOWA. THINK SEVERE THREAT IS LIMITED TO OUR
FAR SOUTHERN TIER OF COUNTIES AROUND OSHKOSH WHERE TEMPERATURES
WARMED TO NEAR 80 THIS AFTERNOON. SPC DOES HAVE A SEVERE
THUNDERSTORM WATCH OUT FOR SOUTHEAST WISCONSIN UNTIL 8 PM JUST SOUTH
OF OUR CWA.

FOR TOMORROW...MODEL RH FIELDS WOULD INDICATE A PARTIAL CLEARING
TREND ACROSS THE CWA...ESPECIALLY DURING THE AFTERNOON HOURS. WILL
BUMP UP WINDS UP TO 15 TO 25 MPH OVER THE EASTERN CWA FROM GREEN BAY
AND THE FOX CITIES EAST TO THE LAKE BASED ON ETA SURFACE WIND
FORECAST. CANADIAN HIGH WILL BUILD INTO THE REGION THURSDAY NIGHT
AND FRIDAY...BRINGING FALLISH CONDITIONS. LOWS UP NORTH WILL DROP
INTO THE MIDDLE TO UPPER 40S WHILE READINGS OVER THE SOUTH WILL BE
FROM 50 TO 55. HIGHS WILL REACH THE 70S BOTH THURSDAY AND FRIDAY...BUT
WILL UNDERCUT GUIDANCE VALUES...ESPECIALLY IN THE EAST DUE TO
NORTHEAST FLOW OFF THE COOLER LAKE.

A REINFORCING COLD FRONT WILL DROP SOUTHEAST INTO THE AREA ON
SATURDAY. ETA WAS PROGGING DECENT LOW LEVEL MOISTURE AHEAD OF IT
ALONG WITH 850/700MB LAPSE RATES AROUND 6C. A SLIGHTLY COOLER AIR
MASS WILL FILTER INTO ON SUNDAY...THEREFORE WILL DROP HIGH
TEMPERATURES BACK A FEW DEGREES FROM THE PREVIOUS FORECAST.

REMAINDER OF THE FORECAST PERIOD REMAINS DRY...ASSUMING THAT THE MRF
BLOCKING PATTERN DOES DEVELOP.

.GRB...NONE.

ECKBERG
WWW.CRH.NOAA.GOV/GRB

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-212030-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREEN BAY WI
1200 PM CDT WED AUG 21 2002

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF CENTRAL...NORTH CENTRAL
AND NORTHEAST WISCONSIN.

THERE IS A SLIGHT RISK OF SEVERE STORMS OVER PARTS OF CENTRAL AND
EAST-CENTRAL WISCONSIN DURING THE AFTERNOON AND EVENING HOURS. THE
SLIGHT RISK AREA IS SOUTH OF A LINE FROM MARSHFIELD...TO GREEN BAY...TO
KEWAUNEE. THE PRIMARY THREAT WILL BE OF DAMAGING WINDS...AND OCCUR
BETWEEN 2:00 PM AND 8:00 PM. IN ADDITION...HEAVY RAINFALL IS POSSIBLE
ACROSS THE ENTIRE AREA THIS AFTERNOON AND THIS EVENING.

A STRONG EAST-WEST FRONTAL BOUNDARY IS EXPECTED TO REMAIN NEARLY
STATIONARY ACROSS CENTRAL AND EAST-CENTRAL WISCONSIN THIS AFTERNOON.
PERIODS OF SHOWERS AND THUNDERSTORMS WILL CONTINUE NORTH OF THE FRONT.
THE WIDESPREAD RAIN...EXTENSIVE CLOUD COVER...AND SOUTHEAST WINDS WILL
KEEP TEMPERATURES NORTH OF THE FRONT RATHER COOL...AND SHOULD PREVENT
ANY STORMS ACROSS NORTH-CENTRAL AND NORTHEAST WISCONSIN FROM BECOMING
SEVERE. SUNSHINE ACROSS SOUTHERN WISCONSIN AND NORTHERN ILLINOIS WILL
LEAD TO MUCH WARMER TEMPERATURES THERE. BRISK SOUTHERLY WINDS WILL BRING
THE WARMER AIR NORTHWARD...AND COULD FUEL STRONG OR SEVERE STORMS IN THE
VICINITY OF THE FRONT DURING THE AFTERNOON AND EARLY EVENING HOURS.

SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON AND EVENING.

SKOWRONSKI
WWW.CRH.NOAA.GOV/GRB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
627 PM CDT WED AUG 21 2002

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

0550 PM    4 E PICKETT               WI   .75 INCH HAIL
08/21/02   WINNEBAGO                      REPORTED BY WEATHER
                                          SPOTTER.

SAC