Severe Thunderstorm Warning 14, NWS Chicago, IL

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHICAGO IL
300 PM CDT TUE JUN 4 2002

MAIN WX PROB IS IN NEAR TERM WITH ONGOING THUNDERSTORMS.  QSTNRY
BNDRY ACROSS NRN IL.  WW239 WIBIS SHORTLY FOR PORTIONS OF
NORTHEAST IL AND NWRN IN.  OTHER QUESTION INVOLVES FLOOD
WATCH/WARNING.  AM EXPECTING TO ALLOW THESE TO EXPIRE AS MAIN
FOCUS FOR RENEWED TSTM DVLPMT APPEARS TO HAVE SHIFTED SWD ALONG
OUTFLOW BOUNDARIES FROM EARLIER CONVECTION.  VIS SATLT LOOPS
SHOW MOST INTS CONVECTION DVLPG OVER WCNTRL IL FRM NR BRL-SRN
LASALLE CO.  THIS SHUD ALSO LIMIT ANY ADDL DVLPMT N OF I-80.
THEREFORE WILL GO GENLY WITH MOS POPS WITH CHC CAT N CNTRL IL
AND LIKELY THRU I-80 CORRIDOR...THEN CATEGORICAL TO S.

BY 12Z WED...MAIN AXIS OF THETA-E ADVCN SHIFTS S AND E OF FA SO
WILL HAVE SOME LINGERING SHWRS IN SRN PORTION OF CWA IN MRNG.
DECENT SUBSIDENCE WED-THU SUGGESTS CLRG MAY BE A LTL QUICKER
THAN PREV FCST SO MAY MENTION THIS IN NRN IL CTYS FOR WED AFTN.

HI PRES BUILDS IN THU-FRI AND WX IS EXPECTED TO BE NIL UNTIL
RETURN OF MT AMS ABOUT SAT NIGHT OR SUN BASED ON 12Z AVN.

.CHI...NONE

MERZLOCK

ILZ003>006-008-010>014-019>023-032>033-039-INZ001>002-010>011-019
-051100-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO IL
1200 PM CDT/EST TUE JUN 4 2002

FOR NORTH CENTRAL AND NORTHEAST ILLINOIS AND NORTHWEST INDIANA

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON
AND TONIGHT.

A FLOOD WATCH IS IN EFFECT FOR NORTH CENTRAL AND FAR NORTHEAST
ILLINOIS THROUGH THIS AFTERNOON.

A STATIONARY FRONT LIES ACROSS NORTHERN ILLINOIS AND NORTHERN
INDIANA FROM NEAR THE QUAD CITIES TO NEAR PONTIAC TO NORTH OF
LAFAYETTE INDIANA.  CLUSTERS OF THUNDERSTORMS WILL CONTINUE TO
DEVELOP THIS AFTERNOON AND TONIGHT ALONG AND NORTH OF THE FRONT.

SOME OF THE STORMS NORTH OF THE FRONT MAY PRODUCE LARGE HAIL
WHILE THE SEVERE THREAT CLOSER TO THE WARM TROPICAL AIR OVER
CENTRAL ILLINOIS MAY INCLUDE DAMAGING WIND GUSTS AS SOME
THUNDERSTORM CLUSTERS THIS AFTERNOON EVOLVE INTO BOWING LINES.

OVER NORTHERN ILLINOIS...GENERALLY NORTH OF INTERSTATE
88...HEAVY RAINFALL IS EXPECTED TO CONTINUE THROUGH MID
AFTERNOON WITH RAINFALL TOTALS NEAR 6 INCHES IN SOME AREAS.

MERZLOCK