River Flood Warning 50, NWS Chicago, IL

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
703 AM CDT THU MAY 26 2011

.DISCUSSION...
332 AM CDT

TODAY...
POTENT UPPER LEVEL SHORTWAVE CENTERED EARLY THIS MORNING OVER
CENTRAL ILLINOIS CONTINUES TO DRIFT EAST. ACROSS THE NORTHERN
PERIPHERY OF THIS SHORTWAVE AN AREA OF DEFORMATION
PRECIPITATION...STRETCHING ACROSS WEST CENTRAL ILLINOIS NORTHEAST
THROUGH SOUTHERN LAKE MICHIGAN. ANTI-CYCLONIC FLOW CENTERED OVER
MANITOBA/WESTERN ONTARIO...WAS BEGINNING TO BUILD INTO THE UPPER
MIDWEST PROVIDING MUCH DRIER/COOLER AIR. THE COMBINATION OF THE
ANTI-CYCLONIC FLOW TO THE NORTH AND POTENT UPPER LEVEL SHORTWAVE TO
THE SOUTH...HAS ALLOWED A TIGHT PRESSURE GRADIENT TO OCCUR OVER
NORTHERN IL/SOUTHERN WI...WITH BREEZY CONDITIONS AT THE SURFACE FROM
THE NORTHEAST.

PRECIPITATION WILL STEADILY COME TO AN END LATER TODAY...HOWEVER
DURING THE FIRST HALF OF THE MORNING NORTHERN IL WILL CONTINUE TO BE
UNDER THE INFLUENCE OF A DEPARTING DEFORMATION ZONE. THUS EXPECT
SHOWERS TO PERSIST...RAPIDLY DECLINING WITH BETTER MIXING AND
MID-LVL SUBSIDENCE ARRIVING IN THE AFTERNOON HOURS.

MUCH COOLER AIR IS SLIDING SOUTHWEST ACROSS THE STRAITS OF
MACKINAW...ACROSS LAKE MICHIGAN TOWARDS NORTHERN IL. THIS COMBINED
WITH CONSIDERABLE SOLAR SHIELDING THROUGH MIDDAY WILL LIMIT SURFACE
HEATING...THUS EXPECT TEMPS TO REMAIN WELL BELOW NORMAL WITH HIGHS
MAINLY IN THE LOW/MID 50S. CLOSER TO LAKE MICHIGAN TEMPERATURES WILL
BE UNDER THE COOLER MARINE ENVIRONMENT...AND MAY HOLD TEMPERATURES
TO AROUND 50 DEGREES. A FEW LOCATIONS MAY STRUGGLE TO WARM ABOVE THE
UPPER 40S.

TONIGHT THROUGH FRIDAY...
500MB TROUGH CONTINUES TO PIVOT EAST WITH DIFLUENT FLOW ALOFT AND
GOOD MIXING IN THE LATE AFTERNOON/EVENING HOURS...EXPECT SKY COVER
TO THIN. THERMAL TROUGH AT 850MB BASED ON NAM/LOCAL WRF INDICATE
TEMPS AT 850MB OF 3 TO 5 DEG C ACROSS THE NORTHWEST PORTIONS OF THE
CWFA...SLIGHTLY WARMER FURTHER SOUTHEAST. ALTHOUGH IT APPEARS DRY
WEATHER WILL DEVELOP FOR TONIGHT...THE PRESENCE OF ANTI-CYCLONIC
FLOW AND MINIMAL PRESSURE GRADIENT SHOULD KEEP WINDS MINIMAL.
ALTHOUGH IT DOES NOT APPEAR WINDS GO COMPLETELY CALM...THEY DO
DECOUPLE TO LESS THAN 10KT. THUS EXPECT RADIATIONAL COOLING TO BE
MAXIMIZED...AND ALLOW TEMPS TO BOTTOM OUT EARLY FRI IN THE UPR 30S
NORTH OF I-88 AND WEST OF LAKE MICHIGAN. THIS ARE COULD SEE SOME
PATCHY FROST DEVELOP AFTER MIDNIGHT. ELSEWHERE TEMPERATURES WILL
COOL INTO THE LOW/MID 40S.

MID-LVL HEIGHTS INCREASE THROUGHOUT FRI AFTN/EVE...WITH DRY AIR IN
THE BOUNDARY LAYER. IT APPEARS A LULL IN THE WEATHER SYSTEMS WILL
CONTINUE THROUGH MUCH OF THE DAY FRI...AS A UPPER LEVEL VORT PUSHES
INTO THE NORTHERN PLAINS. THIS FEATURE HAS UNDERGONE SUBSTANTIAL
ADJUSTMENTS WITH RESPECT TO THE PLACEMENT OF THE UPPER LEVEL
FEATURE. IT NOW APPEARS GUIDANCE BRINGS THIS FEATURE INTO THE UPPER
PLAINS. ONE OF THE DRIVERS FOR THE FURTHER NORTH PATH IS THE
DOWNSTREAM RIDGE THAT CONTINUES TO BE OVER THE CANADIAN
MARITIME...SLOWING THE PROGRESSIVE NATURE OF WEATHER SYSTEMS IN THE
MID-LATITUDES.

THIS DOWNSTREAM RIDGE WILL BE A KEY COMPONENT TO THE ANTICIPATED
WARM-UP AND STRONG SUB-TROPICAL RIDGE FOR THE EASTERN THIRD OF THE
COUNTRY OVER THE SECOND HALF OF THE WEEKEND THROUGH MEMORIAL DAY.

TEMPERATURES FRIDAY WILL WARM INTO THE 60S FOR MANY PORTIONS OF THE
NORTHERN IL/NORTHWEST IN...THE EXCEPTION WILL BE LOCATIONS ADJACENT
TO LAKE MICHIGAN WHERE TEMPS MAY STRUGGLE TO REACH 60 DEGREES.

FLOW THEN TURNS SOUTHEASTERLY IN ADVANCE OF THE APPROACHING UPPER
LEVEL SYSTEM EXPECTED TO REMAIN OVER THE UPPER MIDWEST LATER THIS
WEEK.

SATURDAY THROUGH WEDNESDAY...
MAIN CHALLENGE FOR THE EXTENDED FORECAST RESIDES WITH TEMPERATURES
AND PLACEMENT OF YET ANOTHER UPPER LEVEL SYSTEM OVER THE UPPER
MIDWEST FOR THE HOLIDAY WEEKEND.

LATE IN THE WEEK THE DOWNSTREAM RIDGE ACROSS THE CANADIAN MARITIME
WILL GRADUALLY STRETCH AND BE ORIENTED FROM THE GULF OF MEXICO
NORTHEAST THROUGH NEW ENGLAND. WITH AN ANOMALOUSLY STRONG TROUGH
OVER THE EASTERN CARIBBEAN...THIS WILL ALLOW FURTHER RIDGING TO TAKE
PLACE ACROSS THE GULF AND EVENTUALLY OVERSPREAD THE OHIO VALLEY AND
PORTIONS OF THE GREAT LAKES AS A SUBTROPICAL RIDGE DEVELOPS.

THIS RIDGE IS EXPECTED TO PROVIDE CONSIDERABLE WARMTH TO OUR CWFA
SUN/MON (MEMORIAL DAY)...AS A POTENT 850MB THERMAL RIDGE OF 23 TO 25
DEG C PUSHES OVERHEAD. GUIDANCE CONTINUES TO SUGGEST TEMPS BOTH
SUN/MON WILL WARM WELL INTO THE 80S. WITH THE RIDGE AXIS LOCATED
SOUTHEAST OF OUR REGION...A STEADY SOUTHWEST FLOW OF WARM AIR IS
EXPECTED TO ADVECT OVER ILLINOIS. GIVEN THIS ANTICIPATED
SCENARIO...AFTN TEMPS WILL UNDERGO FURTHER MODIFICATION CLOSER TO
DOWNTOWN CHICAGO.

THE LARGER CHALLENGE WILL BE THE PROXIMITY OF A RING-OF-FIRE SETTING
UP ACROSS THE CENTRAL PLAINS AND SLIDING ALONG THE NORTHERN
PERIPHERY OF THE RIDGE. THIS PATTERN IS CONDUCIVE OF PRODUCING A
SERIES OF MCS...WITH ABUNDANT LLVL MOISTURE BEING ADVECTED INTO THE
CENTRAL PLAINS.

THIS SYSTEM TAKES ON A SIMILAR CHARACTERISTICS TO THE SERIES OF
COMPLEXES OF THUNDERSTORMS THAT WERE NOTED IN JULY OF 2010...WHICH PRODUCED
FLOODING OVER PORTIONS OF IOWA/WISCONSIN/ILLINOIS. PRIOR TO THIS
MUCH OF THE U.S. EAST OF THE MISSISSIPPI RIVER WAS IN THE MIDST OF
WIDESPREAD HEAT AND HUMIDITY. WHILE THERE ARE DIFFERENCES...THE
OVERALL PATTERN SUGGESTED BY THE ANOMALIES OF PWAT/MFLUX THAT AN
ACTIVE MON/TUE MAY BE EXPECTED FOR PORTIONS OF THE MIDWEST
POSSIBLY GREAT LAKES REGIONS. THE CHALLENGE IS THE PRECISE
PLACEMENT OF THIS. IT SHOULD BE NOTED THAT GEFS MEMBERS WITHIN THE
LATEST CYCLE ARE WEAKENING THE RIDGE EARLIER AND PLACEMENT IS
FURTHER SOUTH.

BEACHLER

&&

.AVIATION...

//ORD AND MDW CONCERNS...UPDATED 12Z...

* CEILINGS

* WINDS

* RAIN

TRS

//DISCUSSION...UPDATED 12Z...

UPPER LOW HAS GRADUALLY DRIFTED EAST FROM EAST CENTRAL MO TO
SOUTHWEST IL OVERNIGHT WITH NORTHEAST-SOUTHWEST DEFORMATION ZONE
FROM SW LOWER MI ACROSS SOUTHERN LAKE MI AND NORTHEAST IL TO WEST
CENTRAL IL. MODELS HAVE THE DEFORMATION ZONE WEAKENING AND SLIDING
VERY SLOWLY SOUTHWARD THIS MORNING AS THE UPPER LOW CONTINUES ON
TO EAST CENTRAL IL.

RADAR OVER THE LAST FEW HOURS HAS SHOWN A TREND OF DECREASING
INTENSITY OF THE RAIN...AS WELL AS A START OF BREAKING UP OF THE
SOLID RAIN BAND. WITH PROGGED WEAKENING OF DEFORMATION ZONE EXPECT
THIS TREND TO CONTINUE WITH LIGHT RAIN DIMINISHING TO LIGHT
SHOWERS THIS MORNING...AND SHOWERS ENDING EARLY AFTERNOON.

CONTINUOUS MODERATE RAINFALL OVERNIGHT COUNTERACTED ADVECTION OF
LOWER 40S TO MID 30S DEW POINTS ON FAIRLY STRONG NORTH-NORTHEAST
LOW LEVEL WINDS. WITH A DECREASE IN RAIN EXPECT THE DRYING TO WORK
FURTHER SOUTH AND OVER THE CHI TERMINALS WITH CEILINGS IMPROVING
TO MVFR BY MID MORNING AND TO VFR BY EARLY AFTERNOON.

STRONG DEEP NORTHEAST TO NORTH-NORTHEAST HAD WINDS GUSTING TO
AROUND 30KTS. WINDS PROGGED TO ONLY GRADUALLY DIMINISH...WITH
GUSTINESS NOT ENDING TIL THIS EVENING.

TRS

//ORD AND MDW CONFIDENCE...UPDATED 12Z...

* HIGH CONFIDENCE IN RAIN TRENDS.

* HIGH CONFIDENCE IN WIND TRENDS.

* MODERATE CONFIDENCE IN CEILING TRENDS.

TRS

//OUTLOOK FOR ORD/MDW FOR 00Z SATURDAY-12Z THURSDAY...UPDATED 12Z...

FRIDAY NIGHT...CHANCE OF TS WITH ASSOCIATED MVFR...BRIEF
IFR...VISIBILITIES.

SATURDAY...VFR

SUNDAY...VFR

MONDAY...VFR

TUESDAY...CHANCE OF TS WITH ASSOCIATED MVFR...BRIEF
IFR...VISIBILITIES.

WEDNESDAY...VFR.

TRS

&&

.MARINE...
250 AM CDT

LOW PRESSURE IS MOVING ACROSS EASTERN MISSOURI INTO ILLINOIS THIS
MORNING AND WILL CONTINUE TO SLOWLY TRACK EAST ACROSS INDIANA TODAY.
OVER LAKE MICHIGAN...MODERATE NORTHEAST TO NORTH FLOW IS EXPECTED TO
CONTINUE THROUGH TODAY AND OVERNIGHT AS A TIGHT PRESSURE GRADIENT
PERSISTS BETWEEN THE LOW AND HIGH PRESSURE OVER MANITOBA. THIS RIDGE
WILL BEGIN TO MOVE OVER THE LAKE ON FRIDAY ALLOWING WINDS AND
EVENTUALLY WAVES TO DIMINISH. UNTIL THEN...A SMALL CRAFT ADVISORY
WILL BE IN PLACE OVER THE INDIANA AND ILLINOIS NEARSHORE WATERS
WITH WINDS UP TO 30 KTS EXPECTED. ANOTHER WEAK LOW PRESSURE SYSTEM
WILL MOVE ACROSS THE REGION THIS WEEKEND...BUT WINDS ARE NOT
EXPECTED TO BE AS STRONG WITH A WEAKER GRADIENT IN PLACE. THE NEXT
PERIOD OF CONCERN FOR STRONGER WINDS WILL BE NEXT TUESDAY AS LOW
PRESSURE IS EXPECTED TO MOVE NORTH ACROSS THE WESTERN GREAT LAKES
AND SOUTHERLY FLOW RAMPS UP AHEAD OF A COLD FRONT.

BMD

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...NONE.
IN...NONE.
LM...SMALL CRAFT ADVISORY...NEARSHORE WATERS
     UNTIL 10 AM FRIDAY.

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
433 AM CDT THU MAY 26 2011

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
270945-
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-
433 AM CDT THU MAY 26 2011 /533 AM EDT THU MAY 26 2011/

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

.DAY ONE...TODAY AND TONIGHT.

SHOWERS WILL CONTINUE THROUGH TODAY COMING TO AN END LATER THIS
AFTERNOON. ADDITIONAL PRECIPITATION IS EXPECTED TO REMAIN LIGHT OR
AROUND ONE TENTH OF AN INCH...HOWEVER WITH SATURATED SOILS FROM
RECENT HEAVY RAINFALL THIS MAY RESULT IN NEW OR CONTINUE FLOODING
OF AREA STREAMS.

PORTIONS OF THE ILLINOIS...KANKAKEE RIVERS WILL REMAIN IN FLOOD.
NUMEROUS OTHER STREAMS WILL CONTINUE TO SEE ELEVATED STREAMFLOWS
AND APPROACH BANKFULL STAGE OVER THE NEXT FEW DAYS.

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

THERE WILL BE A CHANCE FOR THUNDERSTORMS SATURDAY THROUGH TUESDAY.

PORTIONS OF THE ILLINOIS...KANKAKEE RIVERS WILL REMAIN IN FLOOD.
NUMEROUS OTHER STREAMS WILL CONTINUE TO SEE ELEVATED STREAMFLOWS
AND APPROACH BANKFULL STAGE OVER THE NEXT FEW DAYS.

.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>745-270945-
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-
433 AM CDT THU MAY 26 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.

STRONG WINDS AND HIGH WAVES WILL LEAD TO HAZARDOUS CONDITIONS FOR
THE ILLINOIS AND INDIANA NEARSHORE WATERS TODAY AND TONIGHT.

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

THERE IS A CHANCE FOR THUNDERSTORMS SATURDAY THROUGH TUESDAY.

STRONG WINDS AND HIGH WAVES WILL LEAD TO HAZARDOUS CONDITIONS FOR
THE ILLINOIS AND INDIANA NEAR SHORE WATERS FRIDAY.

&&

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-
870-872-874-876-878-270945-
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-
433 AM CDT THU MAY 26 2011

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

.DAY ONE...TODAY AND TONIGHT.

AT TIMES WIND GUSTS TODAY MAY APPROACH GALE CRITERIA.

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

THERE IS A CHANCE FOR THUNDERSTORMS SATURDAY THROUGH TUESDAY.

&&

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

BEACHLER

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
612 AM CDT THU MAY 26 2011

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

0600 AM     HEAVY RAIN       ENE PEOTONE             41.33N 87.80W
05/26/2011  M3.17 INCH       WILL               IL   COCORAHS

            PAST 24 HRS. MINOR FLOODING OCCURRING.

&&

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
620 AM CDT THU MAY 26 2011

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

0600 AM     HEAVY RAIN       1 ESE ELK GROVE VILLAGE 42.00N 87.97W
05/26/2011  M2.20 INCH       COOK               IL   COCORAHS

            STORM TOTAL THROUGH 6AM TODAY.

&&

RC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
731 AM CDT THU MAY 26 2011

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

0700 AM     HEAVY RAIN       ROMEOVILLE              41.65N 88.09W
05/26/2011  M2.92 INCH       WILL               IL   OFFICIAL NWS OBS

            24 HOUR TOTAL AT NWS CHICAGO.

&&

RC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
734 AM CDT THU MAY 26 2011

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

0700 AM     HEAVY RAIN       OHARE AIRPORT           41.98N 87.90W
05/26/2011  M3.15 INCH       COOK               IL   OFFICIAL NWS OBS

            24 HOUR TOTAL.

&&

RC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
738 AM CDT THU MAY 26 2011

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

0540 AM     HEAVY RAIN       2 WSW ELK GROVE VILLAGE 41.99N 88.03W
05/26/2011  M1.83 INCH       DUPAGE             IL   COCORAHS

            24 HOUR TOTAL. RAIN STILL FALLING AT OBSERVATION. PONDING
            OF WATER IN LOW AREAS. MINOR STANDING WATER IN STREETS AT
            GULLYS/EDGES.

&&

RC

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