River Flood Warning 21, NWS Chicago, IL

550 
WGUS83 KLOT 110316
FLSLOT
 
FLOOD STATEMENT 
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 
1016 PM CDT WED APR 10 2013

...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN 
ILLINOIS...
 
  ROCK RIVER AT ROCKTON AFFECTING WINNEBAGO COUNTY 
  ROCK RIVER AT LATHAM PARK AFFECTING WINNEBAGO COUNTY 
  ROCK RIVER AT BYRON AFFECTING OGLE COUNTY 

.SYNOPSIS...

SEVERAL ROUNDS OF LOCALLY HEAVY RAIN AND THUNDERSTORMS WILL CONTINUE TO 
PRODUCE RISES ON THE UPPER ROCK RIVER OVER THE NEXT FEW DAYS.

SAFETY MESSAGE...IF YOU ENCOUNTER A FLOODED ROADWAY...TURN AROUND AND
FIND AN ALTERNATE ROUTE.

&&

ILC201-111716-
/O.EXT.KLOT.FL.W.0019.130412T1400Z-000000T0000Z/
/ROKI2.2.ER.130412T1400Z.130415T0600Z.000000T0000Z.NO/
1016 PM CDT WED APR 10 2013

THE FLOOD WARNING CONTINUES FOR
  THE ROCK RIVER AT ROCKTON.
* FROM FRIDAY MORNING UNTIL FURTHER NOTICE.
* AT  930 PM WEDNESDAY THE STAGE WAS 8.7 FEET. 
* FLOOD STAGE IS 10.0 FEET. 
* MODERATE FLOODING IS FORECAST.
* FORECAST...RISE ABOVE FLOOD STAGE BY LATE FRIDAY MORNING AND 
  CONTINUE TO RISE TO NEAR 11.4 FEET BY EARLY MONDAY MORNING.
* IMPACT...AT 12.0 FEET...WATER BEGINS TO FLOW OVER LOW LYING ROADS 
  ALONG THE RIVER IN ROSCOE.

$$

ILC201-111716-
/O.EXT.KLOT.FL.W.0020.130412T1200Z-000000T0000Z/
/LATI2.2.ER.130412T1200Z.130414T1800Z.000000T0000Z.UU/
1016 PM CDT WED APR 10 2013

THE FLOOD WARNING CONTINUES FOR
  THE ROCK RIVER AT LATHAM PARK.
* FROM FRIDAY MORNING UNTIL FURTHER NOTICE.
* AT  915 PM WEDNESDAY THE STAGE WAS 8.9 FEET. 
* FLOOD STAGE IS 10.0 FEET. 
* MODERATE FLOODING IS FORECAST.
* FORECAST...RISE ABOVE FLOOD STAGE BY FRIDAY MORNING AND CONTINUE TO
  RISE TO NEAR 11.0 FEET BY SUNDAY AFTERNOON.
* IMPACT...AT 10.0 FEET...WATER AFFECTS LOW LYING BACK YARDS NEAR THE 
  RIVER.

$$

ILC141-111716-
/O.EXT.KLOT.FL.W.0021.130414T0600Z-130415T0600Z/
/BYRI2.1.ER.130414T0600Z.130414T0600Z.130415T0000Z.UU/
1016 PM CDT WED APR 10 2013

THE FLOOD WARNING CONTINUES FOR
  THE ROCK RIVER AT BYRON.
* FROM LATE SATURDAY NIGHT TO LATE SUNDAY NIGHT.
* AT  915 PM WEDNESDAY THE STAGE WAS 10.4 FEET. 
* FLOOD STAGE IS 13.0 FEET. 
* FORECAST...THE RIVER IS EXPECTED TO RISE TO NEAR FLOOD STAGE EARLY 
  SUNDAY MORNING.
* IMPACT...AT 13.0 FEET...WATER APPROACHES HOUSES ALONG THE RIVER 
  DOWNSTREAM FROM BYRON.

$$

974 
WGUS83 KLOT 111051
FLSLOT
 
FLOOD STATEMENT 
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 
551 AM CDT THU APR 11 2013

...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN 
ILLINOIS...
  DES PLAINES RIVER NEAR RUSSELL AFFECTING LAKE COUNTY 
  FOX RIVER AT ALGONQUIN TAILWATER AFFECTING KANE AND MCHENRY 
  COUNTIES 
  PECATONICA RIVER NEAR SHIRLAND AFFECTING WINNEBAGO COUNTY 
  ROCK RIVER AT ROCKTON AFFECTING WINNEBAGO COUNTY 
  ROCK RIVER AT LATHAM PARK AFFECTING WINNEBAGO COUNTY 
  ROCK RIVER AT BYRON AFFECTING OGLE COUNTY 
  SUGAR CREEK AT MILFORD AFFECTING IROQUOIS COUNTY 

.SYNOPSIS...
WIDESPREAD RAINFALL AMOUNTS OF ONE TO TWO INCHES WILL RESULT
IN SIGNIFICANT RISES...WITH THE POTENTIAL FOR REACHING FLOOD
STAGE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...IF YOU ENCOUNTER A FLOODED ROADWAY...TURN AROUND AND
FIND AN ALTERNATE ROUTE.

&&

ILC089-111-120051-
/O.CON.KLOT.FL.W.0023.130412T1800Z-000000T0000Z/
/AFBI2.2.ER.130412T1800Z.130415T1800Z.000000T0000Z.UU/
551 AM CDT THU APR 11 2013

THE FLOOD WARNING CONTINUES FOR
  THE FOX RIVER AT ALGONQUIN TAILWATER.
* FROM FRIDAY AFTERNOON UNTIL FURTHER NOTICE.
* AT  530 AM THURSDAY THE STAGE WAS 8.4 FEET. 
* FLOOD STAGE IS 9.5 FEET. 
* RECENT ACTIVITY...FLOOD FORECASTS FOR ALGONQUIN WERE MOVED TO THIS 
  LOCATION ON JULY 5 2011. GAGE ZERO DATUM IS DIFFERENT FROM THE OLD 
  GAGE LOCATION. FLOOD AND ACTION STAGES HAVE CHANGED.
* MODERATE FLOODING IS FORECAST.
* FORECAST...RISE ABOVE FLOOD STAGE BY FRIDAY AFTERNOON AND CONTINUE 
  TO RISE TO NEAR 10.9 FEET BY MONDAY AFTERNOON.


$$

ILC201-120051-
/O.CON.KLOT.FL.W.0019.130412T1400Z-000000T0000Z/
/ROKI2.2.ER.130412T1400Z.130415T0600Z.000000T0000Z.NO/
551 AM CDT THU APR 11 2013

THE FLOOD WARNING CONTINUES FOR
  THE ROCK RIVER AT ROCKTON.
* FROM FRIDAY MORNING UNTIL FURTHER NOTICE.
* AT  530 AM THURSDAY THE STAGE WAS 9.0 FEET. 
* FLOOD STAGE IS 10.0 FEET. 
* MODERATE FLOODING IS FORECAST.
* FORECAST...RISE ABOVE FLOOD STAGE BY FRIDAY MORNING AND CONTINUE TO
  RISE TO NEAR 11.4 FEET BY EARLY MONDAY MORNING.
* IMPACT...AT 10.5 FEET...WATER BEGINS TO FLOW OVER PORTIONS OF 
  EDGEMERE TERRACE NEAR ROSCOE.

$$

ILC201-120051-
/O.CON.KLOT.FL.W.0020.130412T1200Z-000000T0000Z/
/LATI2.2.ER.130412T1200Z.130414T1800Z.000000T0000Z.UU/
551 AM CDT THU APR 11 2013

THE FLOOD WARNING CONTINUES FOR
  THE ROCK RIVER AT LATHAM PARK.
* FROM FRIDAY MORNING UNTIL FURTHER NOTICE.
* AT  500 AM THURSDAY THE STAGE WAS 9.2 FEET. 
* FLOOD STAGE IS 10.0 FEET. 
* MODERATE FLOODING IS FORECAST.
* FORECAST...RISE ABOVE FLOOD STAGE BY FRIDAY MORNING AND CONTINUE TO
  RISE TO NEAR 11.0 FEET BY SUNDAY AFTERNOON.
* IMPACT...AT 10.0 FEET...WATER AFFECTS LOW LYING BACK YARDS NEAR THE 
  RIVER.

$$

ILC141-120051-
/O.CON.KLOT.FL.W.0021.130414T0600Z-130415T0600Z/
/BYRI2.1.ER.130414T0600Z.130414T0600Z.130415T0000Z.UU/
551 AM CDT THU APR 11 2013

THE FLOOD WARNING CONTINUES FOR
  THE ROCK RIVER AT BYRON.
* FROM LATE SATURDAY NIGHT TO LATE SUNDAY NIGHT.
* AT  515 AM THURSDAY THE STAGE WAS 10.7 FEET. 
* FLOOD STAGE IS 13.0 FEET. 
* FORECAST...THE RIVER IS EXPECTED TO RISE TO NEAR FLOOD STAGE EARLY 
  SUNDAY MORNING.
* IMPACT...AT 13.0 FEET...WATER APPROACHES HOUSES ALONG THE RIVER 
  DOWNSTREAM FROM BYRON.

$$

ILC097-120051-
/O.CON.KLOT.FL.W.0024.130411T2200Z-130417T0000Z/
/RUSI2.1.ER.130411T2200Z.130413T0600Z.130416T1800Z.NO/
551 AM CDT THU APR 11 2013

THE FLOOD WARNING CONTINUES FOR
  THE DES PLAINES RIVER NEAR RUSSELL.
* FROM THIS AFTERNOON TO TUESDAY EVENING.
* AT  515 AM THURSDAY THE STAGE WAS 6.3 FEET. 
* FLOOD STAGE IS 7.0 FEET. 
* MINOR FLOODING IS FORECAST.
* FORECAST...RISE ABOVE FLOOD STAGE BY LATE THIS AFTERNOON AND 
  CONTINUE TO RISE TO NEAR 7.7 FEET BY EARLY SATURDAY MORNING. 
* IMPACT...AT 8.0 FEET...AGRICULTURAL LAND AND PARK LANDS FLOOD. WATER
  APPROACHES A FEW HOMES NEAR RAILROAD TRACKS.

$$

ILC201-120051-
/O.CON.KLOT.FL.W.0022.130412T1800Z-130416T1500Z/
/SIRI2.1.ER.130412T1800Z.130414T1200Z.130416T0900Z.NO/
551 AM CDT THU APR 11 2013

THE FLOOD WARNING CONTINUES FOR
  THE PECATONICA RIVER NEAR SHIRLAND.
* FROM FRIDAY AFTERNOON TO TUESDAY MORNING.
* AT  515 AM THURSDAY THE STAGE WAS 10.4 FEET. 
* FLOOD STAGE IS 12.0 FEET. 
* MINOR FLOODING IS FORECAST.
* FORECAST...RISE ABOVE FLOOD STAGE BY FRIDAY AFTERNOON AND CONTINUE 
  TO RISE TO NEAR 12.9 FEET BY SUNDAY MORNING. 
* IMPACT...AT 12.0 FEET...WATER OVERFLOWS LOW LYING AREAS NEAR THE 
  RIVER.

$$

ILC075-120051-
/O.CON.KLOT.FL.W.0025.130412T0501Z-130414T0215Z/
/MILI2.1.ER.130412T0501Z.130412T1800Z.130413T2015Z.NO/
551 AM CDT THU APR 11 2013

THE FLOOD WARNING CONTINUES FOR
  THE SUGAR CREEK AT MILFORD.
* FROM LATE TONIGHT TO SATURDAY EVENING.
* AT  500 AM THURSDAY THE STAGE WAS 6.7 FEET. 
* FLOOD STAGE IS 18.0 FEET. 
* MINOR FLOODING IS FORECAST.
* FORECAST...RISE ABOVE FLOOD STAGE BY EARLY FRIDAY AND CONTINUE TO 
  RISE TO NEAR 20.1 FEET BY FRIDAY AFTERNOON. 

$$

848 
WGUS83 KLOT 111523
FLSLOT
 
FLOOD STATEMENT 
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 
1023 AM CDT THU APR 11 2013

...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN 
ILLINOIS...
 
  PECATONICA RIVER NEAR SHIRLAND AFFECTING WINNEBAGO COUNTY 
  ROCK RIVER AT ROCKTON AFFECTING WINNEBAGO COUNTY 
  ROCK RIVER AT LATHAM PARK AFFECTING WINNEBAGO COUNTY 
  ROCK RIVER AT BYRON AFFECTING OGLE COUNTY 

.AN ADDITIONAL 3/4 TO 1 INCH OF RAIN FELL OVER PARTS OF THE
ROCK RIVER BASIN DURING THE LAST 24 HOURS. WATER LEVELS
CONTINUE TO RISE ON THE ROCK RIVER AND ITS TRIBUTARIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...IF YOU ENCOUNTER A FLOODED ROADWAY...TURN AROUND AND
FIND AN ALTERNATE ROUTE.

&&

ILC201-120523-
/O.EXT.KLOT.FL.W.0019.130412T0600Z-000000T0000Z/
/ROKI2.2.ER.130412T0600Z.130414T0600Z.000000T0000Z.NO/
1023 AM CDT THU APR 11 2013

THE FLOOD WARNING CONTINUES FOR
  THE ROCK RIVER AT ROCKTON.
* FROM LATE TONIGHT UNTIL FURTHER NOTICE.
* AT 930 AM THURSDAY THE STAGE WAS 9.2 FEET. 
* FLOOD STAGE IS 10.0 FEET. 
* MODERATE FLOODING IS FORECAST.
* FORECAST...RISE ABOVE FLOOD STAGE BY EARLY FRIDAY AND CONTINUE TO 
  RISE TO NEAR 11.0 FEET BY EARLY SUNDAY MORNING.
* IMPACT...AT 10.5 FEET...WATER BEGINS TO FLOW OVER PORTIONS OF 
  EDGEMERE TERRACE NEAR ROSCOE.

$$

ILC201-120523-
/O.EXT.KLOT.FL.W.0020.130412T0900Z-000000T0000Z/
/LATI2.2.ER.130412T0900Z.130415T0000Z.000000T0000Z.UU/
1023 AM CDT THU APR 11 2013

THE FLOOD WARNING CONTINUES FOR
  THE ROCK RIVER AT LATHAM PARK.
* FROM LATE TONIGHT UNTIL FURTHER NOTICE.
* AT 930 AM THURSDAY THE STAGE WAS 9.3 FEET. 
* FLOOD STAGE IS 10.0 FEET. 
* MODERATE FLOODING IS FORECAST.
* FORECAST...RISE ABOVE FLOOD STAGE BY EARLY FRIDAY AND CONTINUE TO 
  RISE TO NEAR 11.0 FEET BY SUNDAY EVENING.
* IMPACT...AT 10.0 FEET...WATER AFFECTS LOW LYING BACK YARDS NEAR THE 
  RIVER.

$$

ILC141-120523-
/O.EXT.KLOT.FL.W.0021.130414T1200Z-130415T1200Z/
/BYRI2.1.ER.130414T1200Z.130414T1200Z.130415T0600Z.UU/
1023 AM CDT THU APR 11 2013

THE FLOOD WARNING CONTINUES FOR
  THE ROCK RIVER AT BYRON.
* FROM SUNDAY MORNING TO MONDAY MORNING.
* AT 915 AM THURSDAY THE STAGE WAS 10.9 FEET. 
* FLOOD STAGE IS 13.0 FEET. 
* FORECAST...THE RIVER IS EXPECTED TO RISE TO NEAR FLOOD STAGE SUNDAY
  MORNING.
* IMPACT...AT 13.0 FEET...WATER APPROACHES HOUSES ALONG THE RIVER 
  DOWNSTREAM FROM BYRON.

$$

ILC201-120523-
/O.EXT.KLOT.FL.W.0022.130412T1800Z-130417T0400Z/
/SIRI2.1.ER.130412T1800Z.130414T1800Z.130416T2200Z.NO/
1023 AM CDT THU APR 11 2013

THE FLOOD WARNING CONTINUES FOR
  THE PECATONICA RIVER NEAR SHIRLAND.
* FROM FRIDAY AFTERNOON TO TUESDAY EVENING.
* AT 945 AM THURSDAY THE STAGE WAS 10.5 FEET. 
* FLOOD STAGE IS 12.0 FEET. 
* MINOR FLOODING IS FORECAST.
* FORECAST...RISE ABOVE FLOOD STAGE BY FRIDAY AFTERNOON AND CONTINUE 
  TO RISE TO NEAR 12.7 FEET BY SUNDAY AFTERNOON. 
* IMPACT...AT 12.0 FEET...WATER OVERFLOWS LOW LYING AREAS NEAR THE 
  RIVER.

$$

052 
WGUS83 KLOT 120245
FLSLOT
 
FLOOD STATEMENT 
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 
945 PM CDT THU APR 11 2013

...THE FLOOD WARNING IS CANCELLED FOR THE FOLLOWING RIVERS IN 
ILLINOIS...
 
  ROCK RIVER AT BYRON AFFECTING OGLE COUNTY

.SYNOPSIS...
RIVER LEVELS WILL REMAIN ABOVE BANKFULL ALONG THE ROCK RIVER 
NEAR BYRON FOR THE NEXT SEVERAL DAYS...HOWEVER THE RIVER IS NO 
LONGER EXPECTED TO RISE TO OR ABOVE FLOOD STAGE. THEREFORE THE 
FLOOD WARNING HAS BEEN CANCELLED. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...IF YOU ENCOUNTER A FLOODED ROADWAY...TURN AROUND AND
FIND AN ALTERNATE ROUTE.

&&

ILC141-120315-
/O.CAN.KLOT.FL.W.0021.000000T0000Z-130415T1200Z/
/BYRI2.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.UU/
945 PM CDT THU APR 11 2013

THE FLOOD WARNING IS CANCELLED FOR
  THE ROCK RIVER AT BYRON.
* AT  915 PM THURSDAY THE STAGE WAS 11.3 FEET. 
* FLOOD STAGE IS 13.0 FEET. 
* FORECAST...THE RIVER WILL CREST BELOW FLOOD STAGE AT 12.4 FEET 
  EARLY SUNDAY MORNING.
* IMPACT...AT 12.0 FEET...WATER INUNDATES YARDS OF SEVERAL HOUSES 
  ALONG RIVER ROAD NEAR BYRON. PARKS NEAR THE BRIDGE IN BYRON ARE 
  COMPLETELY FLOODED.

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
902 AM CDT WED APR 10 2013

.MESOSCALE DISCUSSION...
540 AM CDT

SMALL MCS CONTINUES TO TRACK INTO WESTERN ILLINOIS EARLY THIS
MORNING. IR IMAGERY OVER THE PAST COUPLE OF HOURS HAS SHOWN A
DECREASE IN THE COVERAGE OF COLD CLOUD TOPS...BUT SMALL AREA OF
STRONG CONVECTION NEAR THE APPARENT MCV THAT HAS FORMED CONTINUES TO
PRODUCE CLOUD TOPS COLDER THAN -70C. RECENTLY A LINE OF
THUNDERSTORMS HAS FILLED IN TO THE SOUTH OF THIS SMALL MCS...BUT THE
SOUTHERN EXTENT OF THAT LINE APPEARS TO BE STRUGGLING AS IT
ENCOUNTERS ONLY WEAK FORCING AND A STOUT CAP. CLOSER TO THE
MCV...SHORT LINE OF CONVECTION IS MAINTAINING ITS INTENSITY THOUGH
IS CERTAINLY ELEVATED LOCATED WELL NORTH OF THE SFC BOUNDARY.

A COUPLE OF ACARS SOUNDINGS OUT OF RFD AFTER 08Z INDICATED 300-600
J/KG OF CAPE FOR PARCELS LIFTED FROM AROUND 800MB WITH LITTLE
INHIBITION. WHILE LAPSE RATES ARE WEAK...STRONG THETA-E ADVECTION IN
ADVANCE OF THIS SMALL MCS SHOULD CONTINUE TO PROVIDE WEAK BUT LIKELY
SUFFICIENT INSTABILITY FOR IT TO MAINTAIN ITSELF FOR AT LEAST THE
NEXT COUPLE OF HOURS AS IT MOVES INTO AND ACROSS OUR CWA. DUE TO THE
HIGHLY ELEVATED NATURE IT IS UNLIKELY TO POSE A DAMAGING WIND
THREAT. RATHER LOW WET BULB ZERO HEIGHTS SHOULD ALLOW STORMS TO
PRODUCE HAIL RATHER EASILY...WITH THE STRONGER STORMS POSSIBLY EVEN
PRODUCING LARGE AMOUNTS OF SMALL HAIL. THE WEAKENING/SHRINKING AREA
OF STRATIFORM PRECIP IN THE WAKE OF THE MCS DOES LESSEN THE THREAT
OF HEAVY RAINFALL TOTALS THIS MORNING.

IZZI

&&

.DISCUSSION...
330 AM CDT

FORECAST CHALLENGES REMAIN THE HEAVY RAIN AND CONVECTIVE POTENTIAL
THROUGH TONIGHT...ALONG WITH TEMPERATURES AS VERY SHARP FRONT
CONTINUES TO MEANDER AROUND OUR SOUTHERN CWA THE NEXT 24 HOURS.

LARGE/STRONG UPPER LOW IS BEGINNING TO EMERGE FROM THE ROCKIES ONTO
THE CENTRAL HIGH PLAINS. VERY SHARP FRONTAL BOUNDARY STRETCHES FROM
NORTHERN IN WEST THROUGH OUR SOUTHERN MOST TIP OF OUR CWA TO A WEAK
LOW OVER NORTH CENTRAL MISSOURI. THE LOW AND SFC FRONT SHOULD MOVE
VERY LITTLE TODAY AS THEY WAIT FOR THE UPPER SYSTEM TO MAKE MORE
EASTWARD PROGRESS TONIGHT INTO THURSDAY.

FOR TODAY...LOOSELY ORGANIZED MCS OVER IOWA AND NORTHERN MISSOURI
WILL LIKELY MOVE ACROSS THE CWA THIS MORNING WITH A PERIOD OF
SHOWERS AND SOME THUNDERSTORMS. WOULD GENERALLY EXPECT THIS MCS TO
MAINTAIN ITS INTENSITY THROUGH THE EARLY MORNING HOURS AS IT IS FED
BY 45KT+ LOW LEVEL JET AND RESULTANT MOISTURE TRANSPORT WITH SPC
MESOANALYSIS INDICATING SUFFICIENT INSTABILITY AND SHEAR IN PLACE
FOR SYSTEM TO MAINTAIN ITSELF. AFTER SUNRISE THE SYSTEM WILL LIKELY
START TO WEAKEN OVER OUR EASTERN CWA AS LOW LEVEL JET VEERS SOMEWHAT
AND BEGINS TO WEAKEN. IN THE WAKE OF THIS MCS...WOULD EXPECT TO SEE
MANY HOURS OF GENERALLY DRY CONDITIONS AS WEAK SUBSIDENCE DEVELOPS
IN THE WAKE OF THE WEAK MCV. THIS MCS MAY WELL ACT TO RE-ENFORCE THE
SURFACE FRONT AND POTENTIALLY PUSH IT SOUTH OF THE CWA BORDER TODAY
LEAVING MUCH OF THE AREA IN A COLD AND STABLE ENVIRONMENT FOR MUCH
OF TODAY. WHILE WEAK SHORTWAVE RIDGING WILL NOT BE OVERLY FAVORABLE
FOR REDEVELOPMENT OF PRECIP/CONVECTION THIS AFTERNOON...CONTINUED
ISENTROPIC ASCENT AS A RESULT OF MODERATE LLJ COULD BE ENOUGH FOR
SOME ISOLD SHRA/TSRA THIS AFTERNOON SO WILL KEEP SOME SMALL POPS IN
THROUGH THE AFTERNOON.

STRONG SHORTWAVE IS PROGGED TO PIVOT AROUND THE BASE OF THE UPPER
LOW THIS AFTERNOON AND LIKELY ENHANCE ASCENT AND RESULT IN FAIRLY
EXTENSIVE SQUALL LINE DEVELOPING NEAR THE FRONT FROM NORTHERN MO
SOUTH INTO THE RED RIVER VALLEY. THIS SQUALL LINE IS LIKELY TO THEN
TRACK FAIRLY QUICKLY NORTHEASTWARD INTO OUR CWA LATER THIS EVENING.
IT IS POSSIBLE THAT THE SFC FRONT COULD BEGIN TO RETREAT NORTHWARD
LATE THIS AFTERNOON AND EARLY THIS EVENING AHEAD OF THE SQUALL
LINE...WHICH ASSUMING IT GETS INTO OUR FAR SOUTHERN CWA THEN THERE
COULD BE SOME WIND POTENTIAL WITH THE LINE. HOWEVER...THE AREAL
EXTENT AND RISK OF SVR WX IN OUR CWA LOOKS VERY LIMITED WITH
CONVECTION LIKELY TOO ELEVATED TO SUPPORT MUCH OF A RISK OF WIND
NORTH OF THE FRONT AND CONVECTIVE MODE EXPECTED TO BE UNSUPPORTIVE
OF A HAIL RISK BY THIS EVENING.

WHILE SEVERE THREAT LOOKS FAIRLY LIMITED...AM CONCERNED ABOUT THE
POTENTIAL FOR HEAVY RAINFALL TONIGHT. PRECIPITABLE WATER VALUES ARE
PROGGED TO INCREASE TO NEARLY 1.5 INCHES...OR NEARLY 250% OF NORMAL
TONIGHT...MEANING CONVECTION WILL LIKELY HAVE OPPORTUNITY TO BE VERY
EFFICIENT RAIN PRODUCERS. FLASH FLOOD GUIDANCE IS NOT OVERLY HIGH
NOW AND COULD BE KNOCKED DOWN LOWER BY THE RAINFALL FROM THIS
MORNING'S MCS. CERTAINLY NOT LOOKING LIKE A BLOCK-BUSTER HEADLINE
MAKING FLOOD EVENT...BUT POTENTIAL DOES EXISTS FOR SOME AREAL AND
RIVER FLOODING TONIGHT. GIVEN UNCERTAINTIES STILL IN CONVECTIVE
EVOLUTION NEXT 24 HORUS AND ANTICIPATED SOMEWHAT MARGINAL FLOOD
THREAT HAVE OPTED TO CONTINUE WITH ESF AND LET DAY SHIFT RE-ACCESS
FOR POSSIBLE FLOOD WATCH. SEVERAL RIVER FORECAST POINTS IN OUR CWA
COULD END UP GOING INTO FLOOD AND CORRESPONDING WATCHES AND WARNINGS
FOR THEM WILL CONTINUE TO UPDATED THROUGH TODAY.

INITIAL WAVE OF SHOWERS AND THUNDERSTORMS LIKELY TO PUSH OFF TO THE
EAST OF THE CWA LATER TONIGHT...BUT COULD SEE SOME ADDITIONAL
SHOWERS MOVE THROUGH LATE TONIGHT INTO THURSDAY MORNING ASSOCIATED
WITH THE STRONG DCVA IN ADVANCE OF THE UPPER LOW. SHOWERS LOOK TO
END THURSDAY MORNING WITH MODELS INDICATING SOME MID LEVEL DRY
INTRUSION PUNCHING INTO THE AREA THURSDAY AFTERNOON SHUTTING DOWN
THE PRECIP AND POSSIBLY MAKING THURS AFTERNOON'S WEATHER SOMEWHAT
SALVAGEABLE. IN FACT...SFC TROUGH/OCCLUDED FRONT IS PROGGED TO PUSH
THROUGH THE CWA BY EARLY AFTERNOON RESULTING IN A WIND SHIFT TO
WEST-SOUTHWESTERLY ALLOWING FOR SOMEWHAT MODERATE TEMPS TO PUSH
RIGHT UP TO THE LAKE FRONT BY MID TO LATE AFTERNOON THURSDAY.

STRONGER COLD AIR ADVECTION THEM LIKELY TO ARRIVE THURSDAY NIGHT
INTO FRIDAY...WHICH WILL RESULT IN STEEPENING LAPSE RATES AND AT
LEAST SOME POTENTIAL FOR SOME RAIN SHOWERS THURS NIGHT INTO FRIDAY
WITH TEMPS POSSIBLY COLD ENOUGH FOR PRECIP TO MIX WITH OR CHANGE TO
SNOW/GRAUPEL THURS NIGHT INTO FRIDAY MORNING. COLD AIR MASS WILL
LINGER OVER THE REGION SATURDAY BEFORE NEXT SYSTEM IS PROGGED TO
TAKE AIM ON THE REGION SUNDAY.

ONCE AGAIN THE GFS AND ECMWF HAVE GONE TO OPPOSITE CORNERS OF THE
BOXING RING AND SEEM TO BE DIGGING IN FOR ANOTHER SHOW DOWN WITH
RESPECT TO THEIR HANDLING OF THIS SYSTEM. GFS SOLUTION WOULD KEEP
WARM FRONT SOUTH OF THE AREA SUNDAY RESULTING IN COLD EASTERLY FLOW
OFF THE LAKE WHILE ECMWF BLASTS THE FRONT NORTH INTO WISCONSIN
RESULTING IN A MUCH WARMER DAY...THOUGH BOTH MODELS SUPPORT
INCREASING SHOWERS/TSTM CHANCES SUNDAY. THE FRONTAL BOUNDARY IS THEN
PROGGED TO ESTABLISH RESIDENCE IN THE REGION THROUGH THE FIRST HALF
OF NEXT WEEK. WHILE IT CERTAINLY DOESN'T LOOK TO BE A COMPLETE
WASHOUT...TITS ALMOST IMPOSSIBLE TO TRY AND PICK OUT ANY PERIODS
WITH LOWER OR NO POPS AS THERE COULD BE COUPLE/FEW SHORTWAVES AND
ASSOCIATED ROUNDS OF SHOWERS/TSTMS MOVE THROUGH. TEMPS WILL HAVE A
LARGE BUST POTENTIAL AS WELL...PARTICULARLY NEAR THE LAKE...WHERE
FRONTAL POSITION COULD RESULT IN 20F+ TEMP SWINGS.

IZZI

&&

.AVIATION...

//ORD AND MDW CONCERNS...UPDATED 14Z...

* THUNDERSTORMS EXITING THE TERMINAL AREA AT 14Z. SHOWERS POSSIBLE
  THROUGH THE REST OF THE MORNING.

* PERIODS OF RAIN AND SCATTERED THUNDERSTORMS THIS EVENING INTO
  THE OVERNIGHT HOURS.

* IFR CEILINGS PREVAILING THROUGH THE PERIOD.

* STRONG/GUSTY NORTHEAST TO EAST WINDS TODAY.

PAW

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

LINE OF THUNDERSTORMS WILL BE MOVING ACROSS THE CHICAGO AREA
TERMINALS BETWEEN 1230Z AND 14Z WITH HEAVY RAIN AND VISIBILITIES
POSSIBLY DROPPING AS LOW AS 1SM. STRONGER WINDS FROM THE
WEST/NORTHWEST ARE ALSO POSSIBLE AS RPJ GUSTED TO 44KT AT 1135Z.
LOW CLOUDS HAVE SCATTERED OUT WITH THIS PRECIP BUT CIG TRENDS AN
HR OR TWO BEHIND THIS LINE IS TO GO BACK INTO IFR. CONFIDENCE ON
HOW LONG CIGS COULD REMAIN ABOVE 1KFT IS LOW...BUT THE DURATION
MAY END UP BEING A FEW HRS. THOUGH WITH CONTINUED NORTHEAST FLOW
OFF THE LAKE AND THE FRONTAL BOUNDARY WELL SOUTH OF THE AREA...
WILL REMAIN PESSIMISTIC WITH THIS FORECAST. IFR CIGS ARE EXPECTED
TO CONTINUE THROUGH THE PERIOD WITH LIFR CIGS POSSIBLE TONIGHT.

AS LOW PRESSURE SLOWLY APPROACHES THE AREA THIS EVENING INTO THE
OVERNIGHT HOURS...EXPECT PERIODS/WAVES OF SHOWERS AND
THUNDERSTORMS DEVELOPING BY EARLY/MID EVENING. OPTED TO MAINTAIN
CURRENT PREVAILING RA WITH VICINITY THUNDER BUT EXPECT AT LEAST
TEMPO...PERHAPS PREVAILING THUNDER WILL BE NEEDED AS TRENDS
EMERGE.

PREVAILING WINDS WILL REMAIN NORTHEAST THROUGH THE PERIOD AND WILL
BE STRONG/GUSTY. WINDS WILL LIKELY INCREASE FURTHER THIS EVENING
WITH GUSTS PERHAPS REACHING 30 KTS. CMS

//ORD AND MDW CONFIDENCE...UPDATED 14Z...

* HIGH CONFIDENCE IN SHOWER/THUNDERSTORM TREND THIS MORNING.
  MEDIUM CONFIDENCE FOR THIS EVENING AND OVERNIGHT.

* MEDIUM CONFIDENCE IN CEILINGS REMAINING IFR.

* MEDIUM CONFIDENCE IN WIND TREND.

PAW

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

* THURSDAY NIGHT AND FRIDAY...CHANCE OF RAIN/SNOW SHOWERS. MVFR
  POSSIBLE.
* SATURDAY...DRY/VFR.
* SUNDAY...CHANCE OF SHRA/TSRA. MVFR POSSIBLE.
* MONDAY AND TUESDAY...CHANCE OF SHOWERS. MVFR POSSIBLE.

&&

.MARINE...

335 AM...THE GRADIENT REMAINS FAIRLY STRONG ACROSS THE CENTRAL
PORTION OF THE LAKE WITH GALE GUSTS BEING REPORTED ALONG PARTS OF
THE WI SHORE AND MOVED UP THE START TIME OF THE GALE WARNING FOR
THE CENTRAL THIRD TO NOW. AS ELONGATED LOW PRESSURE FROM MISSOURI
SOUTH INTO TEXAS CONSOLIDATES INTO A SMALLER LOW...WHICH WILL MOVE
INTO NORTHERN IL THURSDAY MORNING...THE GRADIENT WILL CONTINUE TO
TIGHTEN WITH HIGH PRESSURE BUILDING ACROSS NORTH CENTRAL ONTARIO.
GALES WILL THEN SPREAD ACROSS THE ENTIRE LAKE AND HAVE UPGRADED
THE GALE WATCH FOR THE SOUTHERN THIRD TO A GALE WARNING STARTING
LATE THIS AFTERNOON. MAY NEED A SHORT DURATION GALE WARNING FOR
THE ILLINOIS NEARSHORE WATERS THIS EVENING/OVERNIGHT AS THE LOW
APPROACHES AND THIS WILL NEED TO BE MONITORED WITH LATER
FORECASTS. THE LOW IS NOW EXPECTED TO ELONGATE ACROSS THE SOUTHERN
LAKES REGION THURSDAY NIGHT. THIS WILL BRING SOUTHERLY WINDS TO
THE SOUTHERN THIRD OF THE LAKE WHILE STRONGER NORTHEASTERLY WINDS
REMAIN OVER THE NORTHERN PORTIONS OF THE LAKE. BY FRIDAY AFTERNOON
THE LOW MOVES EAST OF THE LAKE WITH NORTHWESTERLY FLOW SLOWLY
WEAKENING ON SATURDAY AS HIGH PRESSURE APPROACHES. CMS

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...NONE.
IN...NONE.
LM...GALE WARNING...LMZ366-LMZ565-LMZ567-LMZ669-LMZ671-LMZ868-LMZ870-
     LMZ872 UNTIL 9 PM THURSDAY.

     GALE WARNING...LMZ080-LMZ673-LMZ675-LMZ777-LMZ779-LMZ874-LMZ876-
     LMZ878...4 PM WEDNESDAY TO 9 PM THURSDAY.

     GALE WARNING...LMZ261-LMZ362-LMZ364-LMZ563...4 PM WEDNESDAY TO
     10 AM FRIDAY.

     SMALL CRAFT ADVISORY...ILLINOIS NEARSHORE WATERS UNTIL 11 PM FRIDAY.

     SMALL CRAFT ADVISORY...INDIANA NEARSHORE WATERS UNTIL 5 AM SATURDAY.

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
448 AM CDT WED APR 10 2013

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
111000-
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-
448 AM CDT WED APR 10 2013 /548 AM EDT WED APR 10 2013/

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 COULD PRODUCE:
    VERY HEAVY RAIN.
    FREQUENT LIGHTNING.
    HAIL TO THE SIZE OF NICKELS.
    AND POSSIBLY ISOLATED WIND GUSTS OVER 60 MPH.

  AREAS AFFECTED AND TIMING:

  ONE WAVE OF SHOWERS AND THUNDERSTORMS WILL MOVE ACROSS THE
  REGION EARLY THIS MORNING.

  THERE IS A SMALL POTENTIAL FOR THUNDERSTORMS LATE THIS MORNING
  THROUGH THIS AFTERNOON BEFORE THE THREAT OF THUNDERSTORMS
  INCREASES AGAIN THIS EVENING INTO THE NIGHT TONIGHT.

  DISCUSSION:

  ONE CLUSTER OF THUNDERSTORMS WILL MOVE ACROSS THE REGION THIS
  MORNING. SOME OF THE STORMS WILL PRODUCE FREQUENT
  LIGHTNING...HEAVY RAIN...AND HAIL. THERE IS A SMALL THREAT OF
  LOCALLY DAMAGING WINDS WITH THE STORMS THIS MORNING SOUTH OF A
  RENSSELAER INDIANA TO PONTIAC ILLINOIS LINE.

  THERE IS A SMALL POTENTIAL FOR THUNDERSTORMS LINGERING INTO THE
  AFTERNOON...BUT OVERALL THERE SHOULD BE SOME BREAK IN THE
  THUNDERSTORM ACTIVITY FOR A TIME THIS AFTERNOON INTO EARLY THIS
  EVENING.

  THEN...ANOTHER ROUND OF THUNDERSTORMS IS LIKELY TO SWEEP ACROSS
  THE REGION THIS EVENING INTO THE EARLY PORTIONS OF THE OVERNIGHT
  HOURS. HEAVY RAIN AND CLOUD TO GROUND LIGHTNING WILL BE THE
  PRIMARY THREATS WITH THESE STORMS...THOUGH AGAIN THERE DOES
  APPEAR TO BE A SMALL THREAT FOR DAMAGING WINDS SOUTH OF A
  RENSSELAER INDIANA TO PONTIAC ILLINOIS LINE AGAIN TONIGHT.

  PORTIONS OF THE AREA COULD PICK UP LOCALLY OVER TWO INCHES OF
  RAIN BY THURSDAY MORNING...WHICH COULD RESULT IN SIGNIFICANT
  RISES OR EVEN FLOODING ON AREA RIVERS AND STREAMS AS WELL AS
  SOME FLOODING OR LOW LYING OR POOR DRAINAGE AREAS.

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

  THE CHANCE EXISTS FOR A ROUND OR TWO OF THUNDERSTORMS SUNDAY
  THROUGH TUESDAY.

.SPOTTER INFORMATION STATEMENT...

  DUE TO THE LIMITED THREAT OF SEVERE WEATHER...SPOTTER ACTIVATION
  IS NOT ANTICIPATED...BUT SPOTTERS ARE ASKED TO RELAY ANY REPORTS
  OF HAIL OR MEASURED HEAVY RAINFALL TOTALS TO THE NATIONAL
  WEATHER SERVICE.

&&

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

LMZ740>745-111000-
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-
448 AM CDT WED APR 10 2013

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.

A PERIOD OF THUNDERSTORMS IS LIKELY THIS MORNING AND AGAIN
TONIGHT. SOME OF THE STORMS COULD PRODUCE BRIEF GUSTY WINDS OVER
35 KNOTS...HAIL...AND FREQUENT CLOUD TO WATER LIGHTNING.

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

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

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

THE CHANCE EXISTS FOR A ROUND OR TWO OF THUNDERSTORMS SUNDAY
THROUGH TUESDAY.

&&

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-
870-872-874-876-878-111000-
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-
448 AM CDT WED APR 10 2013

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

.DAY ONE...TODAY AND TONIGHT.

PERIODS OF THUNDERSTORMS ARE LIKELY THROUGH TONIGHT...ESPECIALLY
OVER THE SOUTHERN PORTIONS OF THE LAKE.

GALE FORCE WINDS ARE LIKELY.

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

GALE FORCE WINDS WILL LINGER INTO THURSDAY NIGHT OVER THE ENTIRE
LAKE...AND INTO FRIDAY MORNING FOR NORTHERN PORTIONS OF THE LAKE.

THERE WILL BE AT LEAST A COUPLE CHANCES FOR THUNDERSTORMS SUNDAY
THROUGH TUESDAY...ESPECIALLY SOUTHERN PORTIONS OF THE LAKE.

&&

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

IZZI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
825 AM CDT WED APR 10 2013

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

0818 AM     HAIL             2 NNE JOLIET            41.55N 88.11W
04/10/2013  M0.25 INCH       WILL               IL   COCORAHS

&&

ACS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
843 AM CDT WED APR 10 2013

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

0835 AM     HAIL             4 SW ADDISON            41.88N 88.07W
04/10/2013  M0.25 INCH       DUPAGE             IL   COCORAHS

&&

ACS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
844 AM CDT WED APR 10 2013

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

0837 AM     HAIL             BERWYN                  41.84N 87.79W
04/10/2013  M0.25 INCH       COOK               IL   PUBLIC

&&

ACS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
849 AM CDT WED APR 10 2013

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

0800 AM     HAIL             5 SE MARSEILLES         41.28N 88.62W
04/10/2013  M0.25 INCH       LA SALLE           IL   COCORAHS

&&

ACS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
855 AM CDT WED APR 10 2013

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

0849 AM     HAIL             CHICAGO                 41.88N 87.63W
04/10/2013  E0.25 INCH       COOK               IL   TRAINED SPOTTER

            AT UIC CAMPUS

&&

ACS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
939 AM CDT WED APR 10 2013

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

0732 AM     HAIL             2 NW ARLINGTON HEIGHTS  42.11N 88.02W
04/10/2013  M0.50 INCH       COOK               IL   COCORAHS

&&

ACS