Severe Thunderstorm Warning 46, NWS Chicago, IL

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHICAGO IL
245 PM CDT SAT JUN 28 2003

PUBLIC DISCUSSION FOR AFTERNOON ZONES...

MAIN WX PROBLEM NXT 6 HRS OR SO WILL BE CHASING MARGINALLY SVR TSTMS
AROUND. MAIN BAND OF STMS HAVE FORMED ON OLD CONVERGENCE LINE LEFT
FROM EARLIER CONVECTION.  HAIL APPEARS TO BE THE MAIN THREAT WITH
THESE STMS...HOWEVER...TRAINING ECHOES S OF I-80 MAY RESULT IN
LOCALIZED FLOODING.  OVERALL...WILL GENLY GO WITH UNQUALIFOED
MENTION OF SCT TSTMS THROUGH THIS EVENING...THEN CLRG OVERNIGHT.
ONE VORT MAX IS NOW MOVG INTO WRN LWR MI.  ANOTHER...WEAKER
DISTURBANCE IS LOCATED TO S OF LSE WITH SOMEWHAT MORE CONCENTRATED
MOISTURE CONVERGENCE ASSD WITH THIS FEATURE NOW MOVG INTO SWRN WI.
AM LOOKING FOR THESE FEATURES TO BE MAIN FOCUS FOR CONTD TSTM DVLPMT
INTO THIS EVENING.  INSTABILITY ACROSS FA INTO THIS EVENING WOULD
SUPPORT A FEW STORMS THAT COULD BRIEFLY PRODUCE 1 INCH HAIL.

OVERNIGHT...STMS EXPECTED TO DMNISH A FEW HRS AFT SS...THEN DRYING
MOVES IN AS HI PRES RDG NOW OVER WRN DAKS BUILDS TWD MID MS VLY.
THIS IS TO PROVIDE SUBSIDENT CONDITIONS WITH LGT FLOW ACRS AREA THRU
TUES.  BY WED-THUR...SLY TO SWLY FLO TO INCRS AND USHER IN
WARMER...MORE SUMMERLIKE TEMPS/HUMIDITY FOR LATTER HALF OF WEEK.
AT PRESENT...NEXT WX SYS NOT EXPECTED TO AFFECT AREA UNTIL AFTER
MIDWEEK.  MDLS CONSISTENT IN BUILDING HOT DOME OVER HI PLAINS BY MID
WEEK WITH A SERIES OF LOWS MOVING THRU SRN CAN.  COLD FRONT
CURRENTLY FCST TO MOVE THRU TWD END OF WEEK SO WILL KEEP TSTM CHC IN
FOR FOURTH.

.CHI...NONE

MERZLOCK

ILZ003>006-008-010>014-019-020>023-032-033-039-INZ001-002-010-011-019
-291100-

HAZARDOUS WEATHER OUTLOOK...CORRECTED
NATIONAL WEATHER SERVICE CHICAGO IL
430 PM CDT SAT JUN 28 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL AND NORTHEAST
ILLINOIS...NORTHWEST INDIANA...AND THE ADJACENT WATERS OF LAKE
MICHIGAN.

.DAY ONE... TONIGHT

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS EVENING.

THE ATMOSPHERE OVER THE REGION WILL REMAIN UNSTABLE ENOUGH THROUGH
THIS EVENING TO SUPPORT THUNDERSTORM DEVELOPMENT.  THESE STORMS MAY
BRIEFLY PRODUCE MARGINALLY SEVERE HAIL AND WIND GUSTS TO 60 MPH IN
ISOLATED COVERAGE.

THE THUNDERSTORMS ARE EXPECTED TO WEAKEN AND DISSIPATE SOON AFTER
SUNSET.

.DAYS TWO THROUGH SEVEN... SUNDAY THROUGH FRIDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

THE NEXT THREAT OF THUNDERSTORMS APPEARS TO BE LATE IN THE UPCOMING
WEEK...ABOUT THURSDAY NIGHT OR FRIDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

&&

           NWS CHICAGO WEBPAGE

    HTTP://WWW.CRH.NOAA.GOV/LOT (LOWER CASE)
OR  HTTP://WEATHER.NOAA.GOV/CHICAGO (LOWER CASE)

MERZLOCK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
351 PM CDT SAT JUN 28 2003

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

0330 PM    4 W BONFIELD              IL   1 INCH HAIL
06/28/03   KANKAKEE                       REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

0330 PM    4 W BONFIELD              IL   WIND DAMAGE
06/28/03   KANKAKEE                       SIX INCH DIAMETER TREE
                                          BRANCHES DOWN. REPORTED
                                          BY LAW ENFORCEMENT
                                          OFFICIAL.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
430 PM CDT SAT JUN 28 2003

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

0355 PM    7 E KANKAKEE              IL   WIND DAMAGE
06/28/03   KANKAKEE                       LARGE TREE BRANCHES
                                          DOWN ACROSS ROAD NEAR
                                          ROUTES 1 AND 17.
                                          REPORTED BY PUBLIC.