Flash Flood Warning 13, NWS Chicago, IL

000 
WGUS73 KLOT 110844
FFSLOT

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
344 AM CDT THU JUN 11 2009

ILC091-197-INC089-127-111745-
/O.CON.KLOT.FF.W.0013.000000T0000Z-090611T1745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KANKAKEE IL-WILL IL-LAKE IN-PORTER IN-
344 AM CDT THU JUN 11 2009

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1245 PM CDT FOR
SOUTHERN PORTER...CENTRAL LAKE...EAST CENTRAL WILL AND NORTHEASTERN
KANKAKEE COUNTIES...

AT 343 AM CDT...NATIONAL WEATHER SERVICE RADAR CONTINUED TO INDICATE
A THUNDERSTORM PRODUCING VERY HEAVY RAIN OVER THE WARNED AREA. MORE 
STORMS ARE MOVING INTO THE WARNED AREA FROM THE WEST AND SOUTHWEST.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CEDAR LAKE...
MALDEN AND CROWN POINT

REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY FOR RELAY TO
THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN CHICAGO.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS MORE DIFFICULT TO SEE
WATER ON THE ROAD OR JUDGE HOW DEEP IT IS.

MORE THAN HALF OF FLASH FLOOD DEATHS OCCUR IN VEHICLES. TWO FEET OF
FAST MOVING WATER CAN SWEEP VEHICLES...EVEN A PICKUP OR AN SUV...OFF
THE ROAD AND INTO A FLOOD SWOLLEN STREAM. TURN AROUND...DONT DROWN.

LAT...LON 4136 8799 4144 8744 4143 8716 4148 8695
      4135 8694 4114 8797

$$

BRUMER

000 
WGUS73 KLOT 110911
FFSLOT

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
411 AM CDT THU JUN 11 2009

ILC091-197-INC089-127-110921-
/O.CAN.KLOT.FF.W.0013.000000T0000Z-090611T1745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KANKAKEE IL-WILL IL-LAKE IN-PORTER IN-
411 AM CDT THU JUN 11 2009

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHERN PORTER...
CENTRAL LAKE...EAST CENTRAL WILL AND NORTHEASTERN KANKAKEE
COUNTIES...

THIS WARNING WILL BE REPLACED BY A NEW WARNING COVERING A LARGER 
AREA AND EXTENDING THE ENDING TIME.

LAT...LON 4136 8799 4144 8744 4143 8716 4148 8695
      4135 8694 4114 8797

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
215 AM CDT THU JUN 11 2009

.DISCUSSION...

312 PM...MAIN FORECAST CONCERN THIS AFTERNOON IS THE NEXT WAVE/
SYSTEM TO MOVE ACROSS THE REGION LATE TONIGHT AND WEDNESDAY AND
HOW FAR NORTH PRECIP WILL EXTEND/DEVELOP. LONGER TERM...CONCERNS
FOCUS ON VARIOUS SMALL CHANCES FOR PRECIP THRU THE WEEKEND AND A
POSSIBLE BIG WARM UP FOR THE MIDDLE OF NEXT WEEK.

CLOUDS SCATTERED OUT LATE THIS MORNING AND EARLY THIS AFTERNOON
AS LIGHT RAIN SHOWERS DISSIPATED ALONG WITH SOME SUBSIDENCE.
SUNSHINE ALLOWING TEMPS TO WARM WELL INTO THE 70S AWAY FROM THE
LAKE WITH TEMPS NEAR 80 FAR SOUTHERN CWA. COULD BE A FEW ISOLATED
SHOWERS OR TS ACROSS THE SOUTHERN COUNTIES GIVEN INSTABILITY AND
FRONTAL LOCATION BUT EXPECT ANY ACTIVITY THAT MAY DEVELOP TO BE
RATHER DIURNAL AND ENDING WITH/SHORTLY AFTER SUNSET.

NEXT SHORTWAVE LIFTS NORTHEAST ACROSS THE AREA TONIGHT AND MODELS
APPEAR IN FAIR AGREEMENT WITH PRECIP DEVELOPING OVERNIGHT INTO
THURSDAY MORNING WITH THE BULK OF THE ACTIVITY REMAINING ACROSS
CENTRAL IL INTO NORTHWEST INDIANA. WHILE THE TREND HAS BEEN TO
LIFT THIS PRECIP A LITTLE FURTHER NORTH...APPEARS THERE WILL BE A
RATHER SHARP GRADIENT/CUTOFF TO THE PRECIP SOMEWHERE ACROSS THE
CENTER PART OF THE CWA. IN ADDITION...EAST/NORTHEAST FLOW WILL
LIKELY KEEP SOMEWHAT DRIER AIR ADVECTING INTO THE NORTHERN SIDE OF
THIS SYSTEM...LIMITING THE NORTHERN EXTENT OF PRECIP. SO FOR
NOW...HAVE TRENDED POPS HIGHER WITH CHANCE NORTH AND LIKELY SOUTH
BUT SUSPECT THESE POPS MAY END UP BEING TOO LOW...ESPECIALLY
ACROSS SOUTHERN AREAS. THIS SYSTEM IS QUITE PROGRESSIVE AND EXPECT
PRECIP TO BE ENDING FROM NORTHWEST TO SOUTHEAST THURSDAY AFTERNOON
INTO THURSDAY EVENING. HAVE TRIMMED A FEW DEGREES OFF HIGH TEMPS
FOR THURSDAY...WITH WARMEST TEMPS ACROSS NORTHWEST/WESTERN IL AS
CLOUDS SCATTER OUT THERE BY MID/LATE AFTERNOON.

VARIOUS WAVES THEN MOVE ACROSS THE CENTRAL U.S. AND SOUTHERN
LAKES REGION FRIDAY THRU SUNDAY IN ZONAL FLOW BUT LITTLE IN THE
WAY OF CONFIDENCE ON TIMING/LOCATION AND MOST OF THEM APPEAR TO
MOVE GENERALLY SOUTH OF THE CWA BUT CLOSE ENOUGH TO WARRANT LOW
CHANCE POPS. BY EARLY NEXT WEEK...HIGH PRESSURE SHIFTS EAST OF
THE LAKES REGION WITH AN UPPER RIDGE BUILDING ACROSS THE LAKES...
AT LEAST AS ADVERTISED BY THE LAST TWO ECMWF RUNS. SHOULD THIS
VERIFY...IT WILL MEAN A VERY WARM MID/LATE WEEK AS 850MB TEMPS
ARE PROGGED +22C OR BETTER. CERTAINLY A BIT EARLY TO GO QUITE
THIS WARM GIVEN THE DIFFERENT GFS BUT HAVE STARTED THE TREND.
CMS

&&

.AVIATION...
215 AM CDT

0600 UTC TAFS...INVERTED 850 TROF STRETCHING THRU NRN IL ACCORDING
TO MODELS. WITH NE FLOW OFF LAKE AND OVERRUNNING FROM THE
SOUTHWEST ON TOP OF THIS INVERSION...APPEARS ELEVATED CONVECTION
HAS DEVELOPED ACROSS NRN IL AND NW INDY AND INFLUENCING MAINLY MDW
AND GYY BUT STAYING SOUTH OF ORD AND DPA. MAIN CONVECTION
ASSOCIATED WITH PASSING SHORT WAVE IN SRN IL IS ADVANCING NE AND
MAY CLIP SOME TERMINALS NEAR SUNRISE. HOWEVER THAT IS USUAL TIME
FOR OVERNIGHT CONVECTION TO FALL APART AND AM BEING OPTIMISTIC AND
LEAVING PCPN OUT FOR NOW. LOCAL PCPN HAS SATURATED LOWER LAYERS
HOWEVER AND SCT TO BKN MVFR CLOUD LAYERS ARE NOW IN VICINITY OF
TERMINALS IN NE IL. THIS MAY BE VERY INTERMITTENT AND WILL PROBABLY
BE AROUND THRU THE MRNG HOURS. STILL LOOKING FOR WAVE TO BE PAST
NRN IL IN THE AFTN AND HIGH PRESSURE BUILDING IN...SO STILL TAKING
IT VFR AROUND NOONTIME AND CLEARING OUT AFT 00Z THIS EVENING. WINDS
REMAIN NE THRU THURS NGT.

RLB

&&

.MARINE...
135 PM CDT

THE COMBINATION OF SURFACE HIGH ACROSS THE WESTERN GREAT LAKES AND
ANOTHER SURFACE WAVE RIDING ALONG THE FRONT STALLED TO THE SOUTH
OF LAKE MICHIGAN WILL RESULT IN CONTINUED NORTHEAST WINDS THROUGH
FRIDAY. THIS SURFACE WAVE WILL MOVE INTO THE OHIO RIVER VALLEY
FRIDAY...AS THE HIGH PRESSURE SYSTEM TO THE NORTH CONTINUES TO
SETTLE SOUTHWARD ACROSS THE WESTERN GREAT LAKES. AS THIS HIGH
DRIFTS OVER LAKE MICHIGAN...NORTHEAST WINDS 10 TO 15 KNOTS WILL
DIMINISH IN SPEED ON SATURDAY AND BECOME SOUTH SATURDAY
AFTERNOON/EVENING AS AN AREA OF LOW PRESSURE MOVES ACROSS ONTARIO.
THE LOW PRESSURE AREA WILL MOVE INTO WESTERN QUEBEC BY MONDAY
MORNING AS A REINFORCING RIDGE OF HIGH PRESSURE BUILDS INTO THE
REGION. A RELATIVELY WEAK GRADIENT WILL BE MAINTAINED THROUGH THE
PERIOD...AND DO NOT FORESEE ANY POTENTIAL FOR MARINE HEADLINES
THROUGH THE WEEKEND.

MARSILI

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...NONE.
IN...NONE.
LM...NONE.
&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
341 PM CDT WED JUN 10 2009

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
112045-
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-
341 PM CDT WED JUN 10 2009 /441 PM EDT WED JUN 10 2009/

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

.DAY ONE...TONIGHT.

ISOLATED THUNDERSTORMS ARE POSSIBLE SOUTH OF INTERSTATE 80.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

ISOLATED THUNDERSTORMS ARE POSSIBLE THURSDAY MORNING MAINLY SOUTH
OF INTERSTATE 80.

THERE IS A CHANCE OF THUNDERSTORMS SATURDAY NIGHT...SUNDAY...AND
MONDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.

&&

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

LMZ740>745-112045-
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-
341 PM CDT WED JUN 10 2009

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

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

THERE IS A CHANCE OF THUNDERSTORMS MONDAY NIGHT.

&&

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-
870-872-874-876-878-112045-
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 TOW 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-
341 PM CDT WED JUN 10 2009

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

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

&&

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