Severe Thunderstorm Warning 72, NWS Grand Rapids, MI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
444 PM EDT FRI JUL 23 1999

CHALLENGE FOR TODAY HAS BEEN AND WILL CONTINUE TO BE THUNDERSTORMS
WATCH 575 HAS BEEN CLEARED FOR THE GRR CWA AND REPLACED BY WATCH
576.

FIRST ROUND OF TSTMS HAS MOVED EAST AND THE NEXT ROUND IS MOVING
INTO LAKE MI. ATMOSPHERE IMMEDIATELY BEHIND THE FIRST LINE OF
CONVECTION IN THE NW PORTION OF THE CWA HAS CAPES AS LOW AS 100 WITH
CAPES OVER WRN AND SRN PARTS OF CWA RANGING FROM 2000 TO 4000 SO LIS
RANGE FROM -4 TO -8 SO AIRMASS REMAINS UNSTABLE. TSTMS ACTIVITY HAS
BEEN DIMINISHING AS IT MOVES ACROSS THE LAKE BUT EXPECT THAT AS THE
MAIN TROF FORCES THE STORMS EAST THEY WILL BEGIN TO HOLD TOGETHER AS
THEY MOVE ACROSS THE LAKE AND REGENERATE AS THEY MOVE OVER THE
WARMER LAND.

INTERESTING FEATURE ON RADAR THIS AFTERNOON IS AN OUTFLOW BOUNDARY
FROM SOUTH CENTRAL NEWAYGO COUNTY ACROSS KENT TO SE EATON COUNTY.  A
SMALL A WEAK STORM FIRED ON THE BOUNDARY EARLIER BUT IT HAS YET TO
PROVIDE A FOCUS... EXPECT THIS TO CHANGE LATER THIS EVENING AS THE
STORMS FROM WISCONSIN MOVE INTO OUR AREA.

REMAINDER OF FORECAST...HOT AND DUSTY AS WE REALLY HAVE NO REAL
CHANGE IN AIRMASS. DEWPOINTS GO FROM THE 70S TO THE 60S SO STILL
UNCOMFORTABLE BUT HEAT INDICES WELL BELOW THE VALUES THEY REACHED
TODAY EVEN THOUGH TEMPS WILL BE WARMER.  ZONAL FLOW WITH 5OO MB
RIDGE BUILDING BACK INTO THE GREAT LAKES EARLY NEXT WEEK.
.GRR...NONE.
MWH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
559 PM EDT FRI JUL 23 1999

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

1145 AM    IRONS                     MI   WIND DAMAGE
07/23/99   LAKE                           TREES DOWN

1240 PM    RUSTFORD                  MI   WIND DAMAGE
07/23/99   MECOSTA                        TREES DOWN

0115 PM    ROSEBUSH                  MI   WIND DAMAGE
07/23/99   ISABELLA                       TREES DOWN
                                          DOWN

0215 PM    ITHACA                    MI   WIND DAMAGE
07/23/99   GRATIOT                        TREES AND POWER LINES DOWN

0232 PM    MT PLESANT                MI   TORNADO
07/23/99   ISABELLA                       TOUCHDOWN

0238 PM    TOPKINS                   MI   WIND DAMAGE
07/23/99   JACKSON                        TREES DOWN

0245 PM    EATON RAPIDS              MI   .75 INCH HAIL
07/23/99   EATON

0325 PM    DANSVILLE                 MI   WIND DAMAGE
07/23/99   INGHAM                         NUMEROUS TREES DOWN

0326 PM    WEBBERVILLE               MI   WIND DAMAGE
07/23/99   INGHAM                         NMEROUS TREES DOWN

0327 PM    STOCKBRIDGE               MI   WIND DAMAGE
07/23/99   INGHAM                         TREES DOWN

MWH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
559 PM EDT FRI JUL 23 1999

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

1145 AM    IRONS                     MI   WIND DAMAGE
07/23/99   LAKE                           TREES DOWN

1240 PM    RUSTFORD                  MI   WIND DAMAGE
07/23/99   MECOSTA                        TREES DOWN

0115 PM    ROSEBUSH                  MI   WIND DAMAGE
07/23/99   ISABELLA                       TREES DOWN
                                          DOWN

0215 PM    ITHACA                    MI   WIND DAMAGE
07/23/99   GRATIOT                        TREES AND POWER LINES DOWN

0232 PM    MT PLESANT                MI   TORNADO
07/23/99   ISABELLA                       TOUCHDOWN

0238 PM    TOPKINS                   MI   WIND DAMAGE
07/23/99   JACKSON                        TREES DOWN

0245 PM    EATON RAPIDS              MI   .75 INCH HAIL
07/23/99   EATON

0325 PM    DANSVILLE                 MI   WIND DAMAGE
07/23/99   INGHAM                         NUMEROUS TREES DOWN

0326 PM    WEBBERVILLE               MI   WIND DAMAGE
07/23/99   INGHAM                         NMEROUS TREES DOWN

0327 PM    STOCKBRIDGE               MI   WIND DAMAGE
07/23/99   INGHAM                         TREES DOWN

MWH

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