Severe Thunderstorm Warning 137, NWS La Crosse, WI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LA CROSSE WI
220 AM CDT THU JUN 25 1998

TODAY/S PRIMARY CONCERN...THUNDERSTORMS.

AS OF 07Z...DOPPLER RADAR INDICATED BOW ECHO HEADED TOWARD NORTHWEST
WI...WHILE ANOTHER AREA OF STORMS CONTINUES PUSHING ACROSS CENTRAL WI.
STORMS THAT HAD MOVED INTO IOWA FROM THE SOUTHWEST APPREARED TO BE
WEAKENING AS SHOWN BY WARMING TOPS ON INFRARED SATELLITE IMAGERY.
SURFACE LOW SITUATED IN NORTHWEST IOWA WITH WARM FRONT ACROSS SOUTHERN
MN AND CENTRAL WI. 00Z ETA INDICATED SURFACE LOW WILL ADVANCE THROUGH
SOUTHEAST MN TOWARD WESTERN WI...PUSHING WARM FRONT INTO NORTHEAST WI.

STORMS EXPECTED TO EXIT THE FORECAST AREA THIS MORNING AS UPPER LEVEL
ENERGY LIFTS ACROSS THE NORTHERN GREAT LAKES. THIS VERIFIED BY QPF IN
BOTH ETA AND NGM...WHICH DIMINISHES RAINFALL AMOUNTS WITH TIME FROM
WEST TO EAST. ALSO...CAP STRENGTHENS WITH 700 MB TEMPERATURES RISING TO
12C OVER NORTHEAST IOWA/SOUTHWEST WI AND UP TO 9C ACROSS NORTH CENTRAL
WI. THIS SHOULD PRECLUDE AFTERNOON THUNDERSTORM DEVELOPMENT DUE TO
STRONGLY CAPPED ATMOSPHERE.

THOMPSON

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
1100 AM CDT THU JUN 25 1998

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

0135 AM    ROME                      WI   WIND DAMAGE
06/25/98   ADAMS                          LARGE TREES WERE BLOWN
                                          DOWN.

0220 AM    MONDOVI                   WI   WIND DAMAGE
06/25/98   BUFFALO                        A COOP OBSERVER REPORTED
                                          LARGE TREES DOWN.

SHEA

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
1100 AM CDT THU JUN 25 1998

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

0135 AM    ROME                      WI   WIND DAMAGE
06/25/98   ADAMS                          LARGE TREES WERE BLOWN
                                          DOWN.

0220 AM    MONDOVI                   WI   WIND DAMAGE
06/25/98   BUFFALO                        A COOP OBSERVER REPORTED
                                          LARGE TREES DOWN.

SHEA

IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029-
032>034-041>044-053>055-061-261200-

HAZARDOUS WEATHER OUTLOOK...CORRECTED FOR WORDING
NATIONAL WEATHER SERVICE LA CROSSE WI
1215 PM CDT THU JUN 25 1998

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS LATER THIS AFTERNOON
INTO THIS EVENING...

THE STORM PREDICTION CENTER INDICATES THERE IS A SLIGHT RISK FOR SEVERE
WEATHER ACROSS SOUTHEAST MINNESOTA...NORTHEAST IOWA...AND CENTRAL AND
SOUTHWEST WISCONSIN THIS AFTERNOON INTO THE EVENING HOURS.  HOWEVER IT
APPEARS THE GREATEST THREAT OF SEVERE STORMS WILL BE EAST OF WISCONSIN
RAPIDS TO LA CROSSE TO WATERLOO LINE.  EAST OF THIS LINE THE AIRMASS IS
VERY MOIST WITH DEWPOINTS IN THE LOWER TO MIDDLE 70S.

THE ATMOSPHERE ACROSS ALL OF THE AREA WILL BE QUITE UNSTABLE FOR THE
AFTERNOON AND EVENING HOURS.  AN UPPER LEVEL DISTURBANCE NEAR DULUTH MN
IS LIFTING NORTHEAST ACROSS LAKE SUPERIOR.  MID-LEVEL TEMPERATURES OVER
THE AREA ARE WARMING AS THE DISTURBANCE MOVES AWAY FROM THE AREA.  THE
WARMER MID-LEVEL TEMPERATURES SHOULD KEEP THUNDERSTORMS ISOLATED TO
SCATTERED ACROSS THE AREA LATER TODAY AND THIS EVENING.

THE MAIN THREAT FROM ANY STORMS WILL BE LARGE HAIL AND DAMAGING WINDS...
BUT AN ISOLATED TORNADO MAY STILL BE POSSIBLE.

SPOTTER ACTIVATION MAY BE NECESSARY LATER THIS AFTERNOON INTO THIS
EVENING.

RRS