Flash Flood Warning 35, NWS Chicago, IL

000 
WGUS73 KLOT 032157
FFSLOT
ILC031-040100-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO IL
458 PM CDT SAT JUL 3 2004

...A FLASH FLOOD WARNING CONTINUES FOR COOK COUNTY IN ILLINOIS UNTIL
800 PM CDT...

AT 455 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THAT RAIN WAS DIMINISHING ACROSS COOK COUNTY. HOWEVER A NEW BAND OF 
MODERATE TO HEAVY RAIN WAS MOVING NORTH FROM KANKAKEE AND WILL MOVE 
INTO THE METRO AREA ONCE AGAIN. HEAVIEST RAINFALL SO FAR EXTENDED 
FROM LOGAN SQUARE NORTH THROUGH WINNETKA. THESE AREAS WILL MAINTAIN 
THE GREATEST POTENTIAL FOR FLOODING.

THE EXCESSIVE RAINFALL WILL CAUSE FLOODING ON FLOOD PRONE STREETS 
AND UNDERPASSES AND BASEMENTS. NEVER WALK OR DRIVE INTO FLOODED 
AREAS AND ABANDON VEHICLES CAUGHT IN RISING WATERS.

REPORT FLOODING TO YOUR LOCAL ESDA...OR THE NEAREST LAW ENFORCEMENT
AGENCY...FOR RELAY TO THE NATIONAL WEATHER SERVICE. STAY TUNED FOR
LATER STATEMENTS.

LAT...LON 4203 8763 4162 8755 4161 8790 4203 8791

$$

BRUMER

000 
WGUS73 KLOT 032257
FFSLOT
ILC031-032330-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO IL
557 PM CDT SAT JUL 3 2004

...THE FLASH FLOOD WARNING FOR COOK COUNTY HAS BEEN CANCELLED...

AT 553 PM CDT...THE HEAVY RAINS THAT WERE EXPECTED TO MOVE NORTH 
INTO THE COOK COUNTY HAVE WEAKENED CONSIDERABLY. LIGHT RAIN WILL 
CONTINUE UNTIL 700 PM FOR CHICAGOLAND WITH A BREAK UNTIL 800 PM WHEN 
LIGHT RAIN MAY AGAIN MOVE INTO THE AREA. 

ANY FLOODING THAT HAS OCCURRED SHOULD BE RECEDING. NO ADDITIONAL 
FLOODING IS ANTICIPATED IN THE WARNED AREA. THEREFORE...THE FLOOD 
WARNING HAS BEEN CANCELED.

LAT...LON 4203 8763 4162 8755 4161 8790 4203 8791

$$

BRUMER

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHICAGO IL
325 PM CDT SAT JUL 3 2004

.DISCUSSION...

...UPDATE 325 PM...WILL BE DROPPING TOR WATCH FOR ALL WFO LOT
COUNTIES WITH ZFP ISSUANCE. HAVE ISSUED URBAN/SMALL STRM ADVISORY
FOR NERN IL AND LAKE/PORTER IND.

FOCUS OF FORECAST ON SHORTER TERM WITH UPPER SYSTEM AND HOLIDAY
FESTIVITIES THROUGH MONDAY.

CLOSED UPPER LOW HIGHLY EVIDENT IN GOES VAPOR IMAGERY OVER XTRM NERN
MO THIS AFTN...WITH VORT MAX NOTED MOVING OUT OF BASE OF TROUGH AND
LIFTING NORTHEAST INTO CNTRL IL. WIDESPREAD INCRS IN DIUNAL
CONVECTION OCCURRING AS IS TYPICAL WITH THESE FEATURES IN WARM
SEASON. NWP CONSISTENT IN MOVG UPPER CIRCULATION NORTHEAST ACROSS
NRN IL TONIGHT...WITH ETA PREFERRED IN SLIGHTLY SLOWER PROGRESS
TYPICAL OF CLOSED UPPER SYSTEMS. THUS WILL CONTINUE CATEGORICAL POPS
THROUGH EVENING THEN TAPER TO CHANCE POPS ACROSS SOUTHWESTERN CWA
AFTER MIDNIGHT AS TROUGH AXIS MOVES NORTHEAST AND DIURNAL LULL IN
CONVECTION DEVELOPS. WITH SLOWER SOLUTION OF ETA PREFERRED HAVE KEPT
LOW CHC POPS INTO SUNDAY MORNING AS UPPER TROUGH SLOWLY PULLS OUT.
HAVE ELECTED TO KEEP LOW CHC POPS CWA WIDE INTO AFTN AS WELL...AS
ALL GUIDANCE BRINGING SECONDARY S/WV INTO MID/UPPER MS VLY BY AFTN.
THIS APPEARS TO HAVE CONTINUITY WITH S/WV CURRENTLY EVIDENT IN VAPOR
IMAGERY OVER WY...THOUGH GFS APPEARS TO OVERDO STRENGTH OF THIS
FEATURE THRU 24-36 HOURS AS RESULT OF CONVECTIVE FEEDBACK. ETA/META
INDICATE LLVL MOISTURE REMAINING IN PLACE ACROSS FCST AREA SUN AFTN
WITH SFC DEWPOINTS IN UPPER 60S. META FCST SOUNDINGS SHOWING
MODERATE INSTALBILITY DVLPG SBCAPE OF 2000 J/KG BY AFTN ESPECIALLY
SRN CWA...WITH UNIDIRECTIONAL WESTERLY SHEAR PROFILES. SPC HAS
INCLUDED SERN HALF OF CWA IN DAY 2 SLGT RISK. APPEARS FCST AREA TO
DRY OUT SUN NGT AS COLD FRONT SLIPS IN FROM THE NORTH AND WEAK S/WV
RIDGING DVLPS BY MONDAY MORNING.

FRONT SAGS INTO/JUST SOUTH OF FCST AREA MON MORNING...BEFORE NEXT
S/WV MOVES ACROSS CNTRL PLAINS AND LIFTS FRONT BACK NORTH LATE MON
AND MON NGT. NXT CHC POPS IN PLACE WITH NORTHWARD MOVEMENT OF THE
FRONT FAR SOUTHWEST SECTIONS MON AFTN AND ENTIRE CWA MON NGT.

TEMP WISE...HAVE RAISED MIN TEMPS A BIT TNGT WITH DEWPOINTS HANGING
IN UPPER 60S. OTHER SIG CHANGE WAS TO ACCOUNT FOR COOLER MAXES ON
MON N/NERN COUNTIES WITH NE FLOW OF LAKE MICH.

RATZER

&&

.AVIATION...

FOR 18Z TAFS...CURRENT EXPANSION OF TSRA WILL MOVE INTO THE
TERMINALS LATER THIS AFTERNOON. MFVR TO IFR CIGS/VIS IS
ANTICIPATED ASSOCIATED WITH THE STRONGEST CELLS. TSRA WILL
TRANSITION OVER TO SHRA BY 00Z AND PERSIST UNTIL NEAR 06Z.
OVC CIGS ANTICPATED TO LOWER AFTER THE PRECIP ENDS TO NEAR 1000
FT AGL OVERNIGHT GIVEN HIGH MOISTURE FIELDS. SHORTLY AFTER
SUNRISE CIGS SHOULD BECOME BKN AOA 3000 FT AGL. SFC WINDS
TONIGHT WILL PERSIST OUT OF TEH SE THEN VEER AFTER MINIGHT TO THE
SW...WESTERLY FLOW TOMORROW.

&&

.LOT...WATCHES/WARNINGS/ADVISORIES...
.IL...NONE.
.IN...NONE.
.LK MI...NONE.

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE CHICAGO IL
300 PM CDT SAT JUL 3 2004

ILZ003>006-008-010>014-019>022-023-032-033-039-INZ001-002-010-011-019
-041100-
WINNEBAGO-BOONE-MCHENRY-LAKE IL-OGLE-LEE-DE KALB-KANE-DU PAGE-COOK-
LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-IROQUOIS-FORD-
LAKE IN-PORTER-NEWTON-JASPER-BENTON-
300 PM CDT SAT JUL 3 2004

THIS PORTION OF THE HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL
AND NORTHEAST ILLINOIS...AND NORTHWEST INDIANA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

RAIN SHOWERS AND OCCASIONAL THUNDERSTORMS WILL BECOME NUMEROUS ACROSS THE
REGION THIS AFTERNOON AND INTO TONIGHT. THE MAIN CONCERN FROM THE ACTIVITY
WILL BE LOCALLY BRIEF HEAVY RAIN ASSOCIATED WITH THE STRONGER STORMS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

THERE WILL BE A CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING
ON SUNDAY. THE NEXT CHANCE OF SHOWERS AND THUNDERSTORMS WILL BE LATE
MONDAY NIGHT THROUGH EARLY WEDNESDAY MORNING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE
NWS CHICAGO WEBPAGE: WWW.CRH.NOAA.GOV/LOT (LOWER CASE)

LMZ740>746-766-041100-
WINTHROP HARBOR IL TO NEW BUFFALO MI-
LAKE MICHIGAN-
300 PM CDT SAT JUL 3 2004

THIS PORTION OF THE HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS
AND INDIANA WATERS OF LAKE MICHIGAN.

.DAY ONE...THIS AFTERNOON AND TONIGHT

RAIN SHOWERS AND OCCASIONAL THUNDERSTORMS ARE EXPECTED THROUGH TONIGHT.
SOME OF THE SHOWERS AND THUNDERSTORMS MAY PRODUCE PERIODS OF HEAVY RAIN.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

THERE WILL BE A CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING
ON SUNDAY. THE NEXT CHANCE OF SHOWERS AND THUNDERSTORMS WILL BE LATE
MONDAY NIGHT THROUGH EARLY WEDNESDAY MORNING.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE
NWS CHICAGO WEBPAGE: WWW.CRH.NOAA.GOV/LOT (LOWER CASE)

05

ILZ019-ILZ021-ILZ023-ILZ032-ILZ033-ILZ039-INZ010-INZ011-INZ019-
040000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO IL
324 PM CDT SAT JUL 3 2004

ILZ019-021-023-032-033-039-INZ010-011-019-040000-
THE NATIONAL WEATHER SERVICE IN CHICAGO HAS CLEARED ALL COUNTIES
IN TORNADO WATCH 540. COUNTIES CLEARED INCLUDE:

IN ILLINOIS:
FORD...GRUNDY...IROQUOIS...KANKAKEE...LA SALLE...LIVINGSTON...

IN INDIANA:
BENTON...JASPER...NEWTON...

THIS INCLUDES THE CITIES OF...FOWLER...GIBSON CITY...KANKAKEE...
LA SALLE...MOROCCO...MORRIS...PONTIAC...RENSSELAER...WATSEKA...

AEP