Flash Flood Warning 12, NWS Chicago, IL

056 
WGUS73 KLOT 091111
FFSLOT

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
611 AM CDT THU JUN 9 2011

ILC031-037-043-063-089-093-099-103-141-197-091630-
/O.CON.KLOT.FF.W.0012.000000T0000Z-110609T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KANE IL-KENDALL IL-LA SALLE IL-OGLE IL-WILL IL-GRUNDY IL-DE KALB IL-
DUPAGE IL-LEE IL-COOK IL-
611 AM CDT THU JUN 9 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHERN COOK...LEE...
SOUTHERN DUPAGE...SOUTHERN DE KALB...NORTHERN GRUNDY...WILL...
SOUTHERN OGLE...NORTHERN LA SALLE...KENDALL AND SOUTHERN KANE
COUNTIES UNTIL 1130 AM CDT...

AT 604 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL CONTINUING ACROSS THE WARNED 
AREA. RADAR RAINFALL ESTIMATES WERE AS HIGH AS 4 TO 5 INCHES OVER 
PORTIONS OF KENDALL AND WILL COUNTIES.

RAPID RISES ON PORTIONS OF THE DU PAGE RIVER...BLACKBERRY 
CREEK...AND MANY OTHER SMALL CREEKS AND STREAMS IN THE AFFECTED AREA 
WILL CONTINUE THIS MORNING.

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
AURORA...BATAVIA...BOLINGBROOK...BURR RIDGE...CHANNAHON...CHICAGO
HEIGHTS...DE KALB...DIXON...DOWNERS GROVE...DUPAGE AIRPORT...
FLOSSMOOR...FRANKFORT...GENEVA...GLENWOOD...HOMER GLEN...INGALLS
PARK...JOLIET...LA SALLE...LEMONT...LISLE...LITTLE ROCK...LOCKPORT...
MARSEILLES...MATTESON...MENDOTA...MIDLOTHIAN...MINOOKA...MOKENA...
MORRIS AND NAPERVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE ELEVATED LEVELS ON SMALL
CREEKS AND STREAMS...PONDING OF WATER ON ROADS...URBAN AREAS...
HIGHWAYS... UNDERPASSES AND LOW LYING AREAS.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS
AND STREAMS...HIGHWAYS...VIADUCTS AND UNDERPASSES. ADDITIONALLY...
RURAL ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND
OTHER LOW LYING AREAS ARE ALSO SUBJECT TO FLOODING.

MOST FLOOD RELATED DEATHS OCCUR IN VEHICLES. DO NOT ATTEMPT TO CROSS
BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY.
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT OR
IN A VEHICLE.

&&

LAT...LON 4198 8832 4177 8793 4152 8756 4131 8755
      4131 8917 4158 8918 4159 8964 4192 8963
      4193 8969 4198 8969

$$

MORRIS

442 
WGUS73 KLOT 091240
FFSLOT

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
740 AM CDT THU JUN 9 2011

ILC031-037-043-063-089-093-099-103-141-197-091630-
/O.CON.KLOT.FF.W.0012.000000T0000Z-110609T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KANE IL-KENDALL IL-LA SALLE IL-OGLE IL-WILL IL-GRUNDY IL-DE KALB IL-
DUPAGE IL-LEE IL-COOK IL-
740 AM CDT THU JUN 9 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHERN COOK...LEE...
SOUTHERN DUPAGE...SOUTHERN DE KALB...NORTHERN GRUNDY...WILL...
SOUTHERN OGLE...NORTHERN LA SALLE...KENDALL AND SOUTHERN KANE
COUNTIES UNTIL 1130 AM CDT...

AT 736 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL CONTINUING ACROSS THE WARNED 
AREA. RADAR RAINFALL ESTIMATES WERE OVER 5 INCHES IN SOME ISOLATED 
LOCATIONS OF WILL AND KENDALL COUNTIES. MANY AREAS RECEIVED BETWEEN 
2 AND 4 INCHES OF RAIN. PORTIONS OF ROUTE 30 WERE FLOODED IN 
PLAINFIELD AND OTHER STREETS...VIADUCTS...AND LOW LYING AREAS WERE 
FLOODED. SMALL STREAMS WILL CONTINUE TO RISE IN RESPONSE TO THE 
HEAVY RAINFALL AND RUNOFF. 

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
AURORA...BATAVIA...BOLINGBROOK...BURR RIDGE...CHANNAHON...CHICAGO
HEIGHTS...DE KALB...DIXON...DOWNERS GROVE...DUPAGE AIRPORT...
FLOSSMOOR...FRANKFORT...GENEVA...GLENWOOD...HOMER GLEN...INGALLS
PARK...JOLIET...LA SALLE...LEMONT...LISLE...LITTLE ROCK...LOCKPORT...
MARSEILLES...MATTESON...MENDOTA...MIDLOTHIAN...MINOOKA...MOKENA...
MORRIS AND NAPERVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE ELEVATED LEVELS ON SMALL
CREEKS AND STREAMS...PONDING OF WATER ON ROADS...URBAN AREAS...
HIGHWAYS... UNDERPASSES AND LOW LYING AREAS.

MOST FLOOD RELATED DEATHS OCCUR IN VEHICLES. DO NOT ATTEMPT TO CROSS
BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY.
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT OR
IN A VEHICLE.

&&

LAT...LON 4198 8832 4177 8793 4152 8756 4131 8755
      4131 8917 4158 8918 4159 8964 4192 8963
      4193 8969 4198 8969

$$

MORRIS

389 
WGUS73 KLOT 091334
FFSLOT

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
834 AM CDT THU JUN 9 2011

ILC031-037-043-063-089-093-099-103-141-197-091630-
/O.CON.KLOT.FF.W.0012.000000T0000Z-110609T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KANE IL-KENDALL IL-LA SALLE IL-OGLE IL-WILL IL-GRUNDY IL-DE KALB IL-
DUPAGE IL-LEE IL-COOK IL-
834 AM CDT THU JUN 9 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHERN COOK...LEE...
SOUTHERN DUPAGE...SOUTHERN DE KALB...NORTHERN GRUNDY...WILL...
SOUTHERN OGLE...NORTHERN LA SALLE...KENDALL AND SOUTHERN KANE
COUNTIES UNTIL 1130 AM CDT...

AT 830 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL CONTINUING OVER PORTIONS OF 
WILL AND COOK COUNTIES EXTENDING INTO NORTHWEST INDIANA. SOME OF THE 
HEAVIER STORMS MAY PRODUCE AN ADDITIONAL 1/2 TO 1 INCH OF 
RAINFALL.

SMALL STREAMS AND CREEKS WILL CONTINUE TO RISE IN RESPONSE TO THE 
HEAVY RAINFALL AND RUNOFF. 

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
AURORA...BATAVIA...BOLINGBROOK...BURR RIDGE...CHANNAHON...CHICAGO
HEIGHTS...DE KALB...DIXON...DOWNERS GROVE...DUPAGE AIRPORT...
FLOSSMOOR...FRANKFORT...GENEVA...GLENWOOD...HOMER GLEN...INGALLS
PARK...JOLIET...LA SALLE...LEMONT...LISLE...LITTLE ROCK...LOCKPORT...
MARSEILLES...MATTESON...MENDOTA...MIDLOTHIAN...MINOOKA...MOKENA...
MORRIS AND NAPERVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE ELEVATED LEVELS ON SMALL
CREEKS AND STREAMS...PONDING OF WATER ON ROADS...URBAN AREAS...
HIGHWAYS... UNDERPASSES AND LOW LYING AREAS.

MOST FLOOD RELATED DEATHS OCCUR IN VEHICLES. DO NOT ATTEMPT TO CROSS
BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY.
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT OR
IN A VEHICLE.

&&

LAT...LON 4198 8832 4177 8793 4152 8756 4131 8755
      4131 8917 4158 8918 4159 8964 4192 8963
      4193 8969 4198 8969

$$

MORRIS

430 
WGUS73 KLOT 091445
FFSLOT

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
945 AM CDT THU JUN 9 2011

ILC031-037-043-063-089-093-099-103-141-197-091630-
/O.CON.KLOT.FF.W.0012.000000T0000Z-110609T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KANE IL-KENDALL IL-LA SALLE IL-OGLE IL-WILL IL-GRUNDY IL-DE KALB IL-
DUPAGE IL-LEE IL-COOK IL-
945 AM CDT THU JUN 9 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHERN COOK...LEE...
SOUTHERN DUPAGE...SOUTHERN DE KALB...NORTHERN GRUNDY...WILL...
SOUTHERN OGLE...NORTHERN LA SALLE...KENDALL AND SOUTHERN KANE
COUNTIES UNTIL 1130 AM CDT...

AT 942 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WERE MOVING OUT OF THE AREA WITH A FEW AREAS OF LIGHT 
TO MODERATE RAIN REMAINING. RADAR ESTIMATED STORM TOTAL RAINFALL 
GENERALLY RANGED BETWEEN 3 AND 5 INCHES. 

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
AURORA...BATAVIA...BOLINGBROOK...BURR RIDGE...CHANNAHON...CHICAGO
HEIGHTS...DE KALB...DIXON...DOWNERS GROVE...DUPAGE AIRPORT...
FLOSSMOOR...FRANKFORT...GENEVA...GLENWOOD...HOMER GLEN...INGALLS
PARK...JOLIET...LA SALLE...LEMONT...LISLE...LITTLE ROCK...LOCKPORT...
MARSEILLES...MATTESON...MENDOTA...MIDLOTHIAN...MINOOKA...MOKENA...
MORRIS AND NAPERVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE ELEVATED LEVELS ON SMALL
CREEKS AND STREAMS...PONDING OF WATER ON ROADS...URBAN AREAS...
HIGHWAYS... UNDERPASSES AND LOW LYING AREAS.

MOST FLOOD RELATED DEATHS OCCUR IN VEHICLES. DO NOT ATTEMPT TO CROSS
BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY.
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT OR
IN A VEHICLE.

&&

LAT...LON 4198 8832 4177 8793 4152 8756 4131 8755
      4131 8917 4158 8918 4159 8964 4192 8963
      4193 8969 4198 8969

$$

MORRIS

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
522 AM CDT THU JUN 9 2011

.DISCUSSION...

357 AM...ACTIVE PATTERN TO CONTINUE THROUGH SATURDAY WITH
FORECAST CONCERNS FOCUSED ON CONVECTIVE TRENDS/TIMING ALONG WITH
THE POTENTIAL FOR SVR WEATHER AND HEAVY RAIN.

THUNDERSTORMS CONTINUE TO DEVELOP ACROSS THE AREA EARLY THIS
MORNING AS THE LOW LEVEL JET FEEDS MOISTURE AS A SHORTWAVE IS
PASSING TO THE EAST. EXPECT THIS ACTIVITY TO CONTINUE...AT LEAST
ON A SCATTERED BASIS THROUGH SUNRISE WITH A DIMINISHING TREND
INTO THE MID MORNING HRS. THE MAIN COLD FRONT IS NOW PUSHING
THROUGH SOUTHERN WI AND NORTHEAST IOWA...THUS THESE STORMS HAVE
AND WILL CONTINUE TO HAVE THE POTENTIAL TO BE SURFACE BASED WITH
THE POTENTIAL FOR LOCALIZED DAMAGING WIND GUSTS AND PERHAPS SOME
HAIL IN THE STRONGER CORES. THESE STORMS WILL ALSO PRODUCE
TORRENTIAL RAIN...STORM THAT WENT THROUGH LOT AN HR OR SO AGO
REDUCED VISIBILITIES TO JUST A FEW HUNDRED FEET.

WITH EXPECTATION THAT CONVECTION WILL WIND DOWN DURING THIS
MORNING...MIDDAY SHOULD BE RELATIVELY QUIET BUT AS TEMPS WARM AND
INSTABILITY INCREASES AHEAD OF THE FRONT ACROSS CENTRAL IL THIS
AFTERNOON...EXPECT ADDITIONAL THUNDERSTORM DEVELOPMENT WITH SOME
OF THESE STORMS POTENTIALLY BECOMING SEVERE.

MODELS SHOW ANOTHER SHORTWAVE MOVING ACROSS NORTHERN IL AND
SOUTHERN WI EARLY FRIDAY MORNING...AS THE UPPER RIDGE PUSHES BACK
NORTH SOME. LOW LEVEL JET ONCE AGAIN FEEDING INTO THIS SHORTWAVE
AND WITH PRECIPITABLE WATER VALUES BACK INTO THE 1.5 TO 2 INCH
RANGE BY FRIDAY MORNING...THESE STORMS WILL LIKELY PRODUCE HEAVY
RAIN. GIVEN THE HEAVY RAIN THAT HAS OCCURRED SO FAR THIS MORNING
ITS POSSIBLE THAT A FLOOD WATCH MAY BE NEEDED FOR THE NORTHERN
CWA. AND IF NOT FOR LATE TONIGHT/FRIDAY MORNING...A FLOOD WATCH
COULD BE NEEDED FRIDAY NIGHT INTO SATURDAY AS ANOTHER WAVE
LIFTING NORTHEAST ACROSS THE REGION WILL LIKELY PRODUCE HEAVY
RAIN. TOO MUCH UNCERTAINTY FROM THIS DISTANCE AS TO WHERE EXACTLY
THE HEAVIER RAINS WILL OCCUR. FLOW FINALLY TURNS WESTERLY
SATURDAY WITH PRECIP ENDING BY LATE MORNING WITH DRY WEATHER THEN
EXPECTED THROUGH MONDAY.

THE COLD FRONT WILL MOVE SOUTH ACROSS THE CWA THIS MORNING AND
INTO THIS AFTERNOON. TEMPS IN THE 60S ACROSS THE NORTHERN CWA MAY
END UP BEING THE HIGHS FOR THE DAY...PERHAPS SOME RECOVERY WITH
ANY BREAKS IN THE CLOUDS. TEMPS NEAR ALONG THE LAKE MAY STRUGGLE
TO GET BACK INTO THE LOWER 60S...AFTER THIS MORNING/S HIGHS
PRE-FROPA. TEMPS DROP INTO THE 50S TONIGHT MOST AREAS WITH
EASTERLY FLOW UNDER THE ELEVATED CONVECTION. WARM FRONT THEN
PUSHES BACK NORTH INTO THE CENTRAL PART OF THE CWA FRIDAY WITH A
SHARP TEMP GRADIENT POSSIBLE...AND TEMPS POSSIBLE BACK INTO THE
MID/UPPER 80S SOUTH OF THE FRONT FRIDAY. CMS

&&

.AVIATION...

//ORD AND MDW CONCERNS...UPDATED 10Z...

* PERIODS OF TSRA THRU EARLY MORNING.
* CONVECTIVELY DISTURBED WIND DIRECTION EVENTUALLY BECOMING
  NORTHEAST.
* POTENTIAL FOR MVFR CIGS IN THE MORNING.
* GUSTY NW WINDS THURSDAY AFTERNOON.

RATZER

//DISCUSSION...UPDATED 10Z...

TWO AREAS OF THUNDERSTORMS MOVING EAST ALONG FRONTAL ZONE ACROSS
IOWA...NORTHERN IL AND NORTHERN INDIANA THIS MORNING. 35 KNOT
SOUTHWEST LOW LEVEL JET CONTINUES TO FEED ELEVATED STORMS OVER
NORTH CENTRAL/NORTHEAST IL...SO EXPECT THUNDER TO CONTINUE ACROSS
TERMINALS FOR THE NEXT COUPLE OF HOURS AT LEAST. NEAR TERM HIGH
RES CONVECTIVE MODELS SUGGEST IOWA CONVECTION WILL MOVE INTO
NORTHERN IL...BUT WEAKEN BY AROUND 15Z AS LOW LEVEL JET VEERS WEST
AND WEAKENS. WILL CONTINUE TO EVALUATE FOR 12Z TAFS...BUT WILL
LIKELY NEED TO EXTEND PRECIP/THUNDER MENTION FOR A FEW HOURS THIS
MORNING BEFORE ACTIVITY WEAKENS AND SAGS SOUTH OF TERMINALS.

RATZER

PREVIOUS DISCUSSION FROM 06Z...

SHOWER AND THUNDERSTORM ACTIVITY BROKE OUT ACROSS THE REGION LATE
LAST EVENING AND IS STILL WORKING TO THE SOUTH. THE MAIN FRONTAL
BOUNDARY STILL REMAINS TO THE WEST...GENERALLY ON A LINE FROM GRB
SOUTHWEST TO DBQ AND THEN STJ. THE BRUNT OF THE SHOWER AND
THUNDERSTORM ACTIVITY HAS TRANSITIONED SOUTH...THOUGH THERE WILL
BE SOME LINGERING SHOWERS AND THE OCCNL CLAP OF THUNDER OVER THE
NEXT FEW HOURS. THE MAIN FRONT HAS NOT MADE GOOD PROGRESS
OVERNIGHT AND LIKELY WONT MOVE THROUGH THE EASTERN TERMINALS UNTIL
THE 09Z TIME FRAME. WAVE WORKING NORTHWEST ACROSS THE PLAINS
SHOULD MOVE ACROSS THE NORTHERN ILLINOIS REGION AND MAY REIGNITE
SOME SHOWER ACTIVITY/KEEP IT GOING. CONFIDENCE ISNT THE HIGHEST WITH
HOW MUCH ACTIVITY WILL REDEVELOP AND WHAT THE COVERAGE WILL LIKELY
BE. WILL MAINTAIN A VCSH THOUGH SOME SHOWERS MAY WORK THEIR WAY
OVER THE TERMINALS IN THAT TIME. FORECAST SOUNDINGS REMAIN
RELATIVELY MOIST IN THE MORNING WITH FLOW OFF OF THE LAKE...AND
STILL HINT AT SOME MVFR CIGS DEVELOPING...THOUGH GUIDANCE HAS
BACKED OFF SOME AND DID FOLLOW THAT TREND SLIGHTLY. WINDS GUSTS TO
AGAIN PICK UP IN THE AFTERNOON AND GENERALLY PEAK IN THE 20 KT
RANGE OUT OF THE NORTHWEST.

NEXT AND MORE PROMINENT WAVE IS CURRENTLY BEING EJECTED ACROSS THE
FOUR CORNER STATES AND SHOULD WORK NORTH ACROSS THE PLAINS TODAY.
WITH IT...LOW PRESSURE WILL ATTEMPT TO BUILD ACROSS PLAINS AND MOVE
NORTHEAST. THE STALLED BOUNDARY THAT WAS THE REMNANTS OF THE STORM
SYSTEM TONIGHT...WILL AGAIN LIFT TO THE NORTH AND ACROSS THE
TERMINALS. WITH THIS...EXPECT IT TO BRING THE RENEWED CHANCES FOR
SHOWERS AND THUNDERSTORMS...GENERALLY BEYOND 09Z ON THE 10TH.

SHEA

//ORD AND MDW CONFIDENCE...UPDATED 08Z...

* HIGH CONFIDENCE ON PERIODS OF THUNDER THROUGH 10Z.

* MEDIUM CONFIDENCE IN MVFR CIGS THIS AM.
* MEDIUM HIGH CONFIDENCE ON WINDS FORECAST INCLUDING WIND SHIFT.

RATZER

//OUTLOOK FOR ORD/MDW FOR 12Z FRIDAY-12Z WEDNESDAY...UPDATED 00Z...

FRIDAY...MVFR POSSIBLE. TSRA LIKELY.
SATURDAY...VFR. CHANCE OF SHRA EARLY.
SUNDAY...VFR.
MONDAY...VFR. CHANCE OF TSRA.
TUESDAY...VFR. CHANCE OF TSRA.

SHEA

&&

.MARINE...
515 AM CDT

A TROUGH OF LOW PRESSURE CONTINUES TO SLOWLY SHIFT EAST AND WEAKEN
THIS MORNING...WITH A COLD FRONT PUSHING SOUTH DOWN THE LAKE.
WINDS WILL CONTINUE TO SHIFT TO THE NORTH BEHIND THIS FRONT AND
INCREASE TO THE 15 TO 25 KT RANGE FOR MOST OF TODAY. THEN WITH A
RIDGE OF HIGH PRESSURE TO THE NORTH MOVING EAST ACROSS THE
REGION...WINDS WILL SHIFT TO THE EAST AND DIMINISH LATE TONIGHT INTO
EARLY FRIDAY. A TROUGH OF LOW PRESSURE WILL THEN DEVELOP AND MOVE
NORTHEAST OUT OF THE CENTRAL PLAINS ON FRIDAY. AS THIS
OCCURS...WINDS WILL BEGIN TO VARY WITH THE APPROACH OF THE LOW
BEFORE TURNING MORE NORTHWEST AS A RIDGE OF HIGH PRESSURE BUILDS
ACROSS THE NORTHERN PLAINS.

RODRIGUEZ

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...NONE.
IN...NONE.
LM...SMALL CRAFT ADVISORY...LMZ743-LMZ744-LMZ745...10 AM THURSDAY TO
     4 AM FRIDAY.

     SMALL CRAFT ADVISORY...LMZ740-LMZ741-LMZ742...10 AM THURSDAY TO
     10 AM FRIDAY.

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
452 AM CDT THU JUN 9 2011

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
101000-
WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-OGLE-LEE-DE KALB-KANE-
DUPAGE-COOK-LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-
IROQUOIS-FORD-LAKE INDIANA-PORTER-NEWTON-JASPER-BENTON-
452 AM CDT THU JUN 9 2011 /552 AM EDT THU JUN 9 2011/

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

.DAY ONE...TODAY AND TONIGHT.

  WEATHER HAZARDS EXPECTED:

  THUNDERSTORMS...THE STRONGEST MAY PRODUCE...

  DAMAGING WINDS IN EXCESS OF 60 MPH.
  HALF DOLLAR SIZE HAIL.
  TORRENTIAL RAIN...WHICH MAY CAUSE FLASH FLOODING.
  DEADLY CLOUD TO GROUND LIGHTNING.

  AREAS AFFECTED AND TIMING:

  SCATTERED THUNDERSTORMS WILL MOVE EAST ACROSS AREAS MAINLY SOUTH
  OF INTERSTATE 88 THIS MORNING. THESE THUNDERSTORMS WILL HAVE THE
  POTENTIAL TO PRODUCE QUARTER SIZE HAIL AND HEAVY RAIN...AND
  POSSIBLY LOCALIZED FLOODING.

  ADDITIONAL THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON INTO THIS
  EVENING... ESPECIALLY SOUTH OF THE ILLINOIS AND KANKAKEE RIVERS.
  THESE THUNDERSTORMS MAY PRODUCE HALF DOLLAR SIZE HAIL AND
  DAMAGING WINDS IN EXCESS OF 60 MPH...AS WELL AS HEAVY RAIN.

  MORE THUNDERSTORMS ARE EXPECTED TONIGHT...ESPECIALLY AFTER
  MIDNIGHT. THESE THUNDERSTORMS WILL BE ELEVATED WITH THE MAIN
  THREATS BEING TORRENTIAL RAIN WHICH MAY CAUSE LOCAL FLASH
  FLOODING AS WELL AS SMALL HAIL.

  DISCUSSION:

  SCATTERED THUNDERSTORMS EARLY THIS MORNING ARE ASSOCIATED WITH
  AN UPPER LEVEL DISTURBANCE MOVING ACROSS THE REGION. THESE
  STORMS ARE EXPECTED TO GRADUALLY DIMINISH IN COVERAGE AND
  INTENSITY LATER THIS MORNING AND INTO EARLY THIS AFTERNOON. A
  COLD FRONT WILL MOVE SOUTH ACROSS THE AREA THIS MORNING.
  INSTABILITY WILL INCREASE AHEAD OF THIS COLD FRONT ACROSS
  CENTRAL ILLINOIS AND CENTRAL INDIANA THIS AFTERNOON.
  THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG AND AHEAD OF THIS
  FRONT THIS AFTERNOON INTO THIS EVENING. ANOTHER UPPER LEVEL WAVE
  WILL MOVE ACROSS THE REGION LATE TONIGHT INTO FRIDAY MORNING...
  PRODUCING ELEVATED THUNDERSTORMS WHICH MAY PRODUCE TORRENTIAL
  RAIN IN SOME AREAS AND THE POTENTIAL FOR FLASH FLOODING.

PORTIONS OF THE KANKAKEE RIVER WILL REMAIN IN FLOOD.

THERE IS AN INCREASED RISK FOR RIP CURRENTS ALONG THE ILLINOIS AND
INDIANA SHORES OF LAKE MICHIGAN THROUGH FRIDAY MORNING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

THUNDERSTORMS WILL BE POSSIBLE FRIDAY AND FRIDAY NIGHT. SOME OF
THESE THUNDERSTORMS MAY BECOME SEVERE...ESPECIALLY FRIDAY
AFTERNOON. ALL OF THESE THUNDERSTORMS WILL HAVE THE POTENTIAL TO
PRODUCE TORRENTIAL RAINFALL WHICH MAY LEAD TO LOCALIZED FLASH
FLOODING.

PORTIONS OF THE KANKAKEE RIVER WILL REMAIN IN FLOOD THROUGH
SATURDAY EVENING. ADDITIONAL RISES ON AREA RIVERS WILL BE POSSIBLE
FRIDAY AND SATURDAY DUE TO EXPECTED HEAVY RAINFALL.

THERE IS A CHANCE OF THUNDERSTORMS MONDAY NIGHT THROUGH WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS MAY BE NEEDED TODAY AND TONIGHT.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

LMZ740>745-101000-
WINTHROP HARBOR TO WILMETTE HARBOR-
WILMETTE HARBOR TO NORTHERLY ISLAND-
NORTHERLY ISLAND TO CALUMET HARBOR-CALUMET HARBOR TO GARY-
GARY TO BURNS HARBOR-BURNS HARBOR TO MICHIGAN CITY-
452 AM CDT THU JUN 9 2011

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

.DAY ONE...TODAY AND TONIGHT.

SCATTERED THUNDERSTORMS ARE EXPECTED TODAY AND TONIGHT. SOME OF
THESE THUNDERSTORMS MAY PRODUCE SMALL HAIL AND WIND GUSTS TO 30
KNOTS.

STRONG WINDS AND HIGH WAVES WILL LEAD TO HAZARDOUS CONDITIONS FOR
SMALL CRAFT TODAY AND TONIGHT.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

SCATTERED THUNDERSTORMS ARE POSSIBLE FRIDAY AND FRIDAY NIGHT.
SOME OF THESE THUNDERSTORMS MAY PRODUCE SMALL HAIL AND WIND GUSTS
TO 30 KNOTS.

STRONG WINDS AND HIGH WAVES WILL LEAD TO HAZARDOUS CONDITIONS FOR
SMALL CRAFT FRIDAY MORNING.

THERE IS A CHANCE OF THUNDERSTORMS MONDAY NIGHT THROUGH WEDNESDAY.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-101000-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN SOUTH OF A LINE FROM SEUL CHOIX POINT TO THE
MACKINAC BRIDGE AND NORTH OF A LINE FROM CHARLEVOIX MI TO SOUTH
FOX ISLAND 5 NM OFFSHORE-
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE
TO MID LAKE-
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
452 AM CDT THU JUN 9 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE
MICHIGAN.

.DAY ONE...TODAY AND TONIGHT.

SCATTERED THUNDERSTORMS ARE EXPECTED TODAY AND TONIGHT ACROSS
SOUTHERN LAKE MICHIGAN. SOME OF THESE THUNDERSTORMS MAY PRODUCE
SMALL HAIL AND WIND GUSTS TO 30 KNOTS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

SCATTERED THUNDERSTORMS ARE POSSIBLE FRIDAY AND FRIDAY NIGHT.
SOME OF THESE THUNDERSTORMS MAY PRODUCE SMALL HAIL AND WIND GUSTS
TO 30 KNOTS.

THERE IS A CHANCE OF THUNDERSTORMS MONDAY NIGHT THROUGH WEDNESDAY.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
230 AM CDT THU JUN 9 2011

ILZ010-090800-
LEE IL-
230 AM CDT THU JUN 9 2011

...SPECIAL WEATHER STATEMENT...

AT 226 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG
THUNDERSTORM 15 MILES SOUTHWEST OF WALTON...MOVING EAST AT 35 MPH.

NICKEL SIZE HAIL AND BRIEF HEAVY DOWNPOURS ARE POSSIBLE WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
  WALTON...             AMBOY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEAVY RAINFALL CAN LEAD TO FLOODING OF LOW LYING AREAS SUCH AS
DITCHES...VIADUCTS...UNDERPASSES...CREEKS AND DRAINAGE AREAS. SEEK
SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED.

LAT...LON 4176 8931 4158 8927 4158 8950 4158 8963
      4159 8964 4170 8964

BMD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
245 AM CDT THU JUN 09 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0242 AM     HAIL             ROMEOVILLE              41.65N 88.09W
06/09/2011  E0.25 INCH       WILL               IL   OFFICIAL NWS OBS

&&

CM

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
313 AM CDT THU JUN 09 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0300 AM     TSTM WND GST     EVERGREEN PARK          41.72N 87.70W
06/09/2011  M58 MPH          COOK               IL   FIRE DEPT/RESCUE

            SUSTAINED WINDS 48-50 MPH WITH PEAK GUST TO 58 MPH. PEA
            SIZED HAIL. 91ST AND CLIFTON PARK.

&&

RATZER

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
338 AM CDT THU JUN 09 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0300 AM     TSTM WND DMG     WORTH                   41.69N 87.79W
06/09/2011                   COOK               IL   TRAINED SPOTTER

            5 INCH DIA TREE FELL ON HOME WITH SMALLER BRANCHES DOWN
            ELSWHERE. 117TH ST AND RIDGELAND.

&&

60

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
347 AM CDT THU JUN 09 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0250 AM     HEAVY RAIN       OAK LAWN                41.72N 87.75W
06/09/2011  M0.90 INCH       COOK               IL   COCORAHS

            0.90 RAINFALL IN PAST 25 MINUTES. WIND GUSTS ESTIMATED AT
            50 MPH.

0310 AM     HEAVY RAIN       BURNHAM                 41.64N 87.54W
06/09/2011  M0.67 INCH       COOK               IL   COCORAHS

            RAINFALL IN PAST 10 MINUTES.

0310 AM     TSTM WND GST     BURNHAM                 41.64N 87.54W
06/09/2011  E67 MPH          COOK               IL   COCORAHS

0345 AM     HAIL             AMBOY                   41.72N 89.33W
06/09/2011  E0.50 INCH       LEE                IL   LAW ENFORCEMENT

&&

60

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
412 AM CDT THU JUN 09 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0410 AM     HAIL             FRANKLIN GROVE          41.84N 89.30W
06/09/2011  E0.50 INCH       LEE                IL   TRAINED SPOTTER

&&

60