HAZARDOUS WEATHER OUTLOOK
Issue Date: 1203 PM CST THU DEC 24 2009
Expiration: 1200 PM CST FRI DEC 25 2009

/100 PM EST THU DEC 24 2009/
THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
.DAY ONE...THIS AFTERNOON AND TONIGHT.
FREEZING RAIN WILL CONTINUE TO BE A THREAT ACROSS NORTHWEST
INDIANA UNTIL TEMPERATURES RISE ABOVE FREEZING DURING THE MID
AFTERNOON.
MODERATE TO HEAVY RAIN IS EXPECTED TO PERSIST FROM THE AFTERNOON
THROUGH THE OVERNIGHT HOURS. THIS RAINFALL WILL COMBINE WITH
RAPIDLY MELTING SNOW AND ICE TO CREATE SIGNIFICANT AMOUNTS OF
RUNOFF...WHICH MAY RESULT IN RISES ALONG AREA RIVERS...AS WELL
FLOODING OF LOW LYING AND FLOOD PRONE AREAS.
.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.
FLOODING THAT OCCURS AS A RESULT OF RAIN THURSDAY AFTERNOON
THROUGH FRIDAY MORNING WILL LIKELY PERSIST THROUGH A PORTION OF
THE DAY TWO THROUGH SEVEN PERIOD.
PRECIPITATION IS EXPECTED TO CHANGE BACK TO LIGHT SNOW SHOWERS
DURING THE DAY ON FRIDAY...AND THESE SNOW SHOWERS WILL PERSIST
THROUGH LATE SUNDAY. 1 TO 3 ADDITIONAL INCHES OF SNOW COULD
ACCUMULATE BY SUNDAY NIGHT.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH
TONIGHT...HOWEVER...SPOTTERS ARE ENCOURAGED TO REPORT ANY OBSERVED
FLOODING TO THE NATIONAL WEATHER SERVICE IN CHICAGO.
&&
COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO
$$

FLOOD WATCH
Issue Date: 345 AM CST WED DEC 23 2009
Expiration: 600 AM CST FRI DEC 25 2009

...HEAVY RAIN AND FLOODING POSSIBLE THURSDAY AFTERNOON THROUGH
FRIDAY MORNING...
.A DEVELOPING WINTER STORM OVER THE SOUTHERN PLAINS WILL MOVE
NORTH TO IOWA BY FRIDAY MORNING. AFTER A PERIOD OF WINTRY
PRECIPITATION WEDNESDAY AFTERNOON INTO THURSDAY MORNING...WARM
MOIST AIR WILL SPREAD NORTH ACROSS THE AREA WITH PERIODS OF
HEAVY RAIN EXPECTED THURSDAY AFTERNOON AND THURSDAY NIGHT.
ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
231745-
/O.NEW.KLOT.FA.A.0003.091224T1800Z-091225T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WINNEBAGO-BOONE-MCHENRY-LAKE IL-OGLE-LEE-DE KALB-KANE-DUPAGE-COOK-
LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-IROQUOIS-FORD-
LAKE IN-PORTER-NEWTON-JASPER-BENTON-
INCLUDING THE CITIES OF...ROCKFORD...BELVIDERE...WOODSTOCK...
WAUKEGAN...OREGON...DIXON...DEKALB...AURORA...WHEATON...CHICAGO...
OTTAWA...OSWEGO...MORRIS...JOLIET...KANKAKEE...PONTIAC...
WATSEKA...PAXTON...GARY...VALPARAISO...MOROCCO...RENSSELAER...
FOWLER
345 AM CST WED DEC 23 2009 /445 AM EST WED DEC 23 2009/
...FLOOD WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH LATE
THURSDAY NIGHT...
THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A
* FLOOD WATCH FOR PORTIONS OF ILLINOIS AND INDIANA...INCLUDING
THE FOLLOWING AREAS...IN ILLINOIS...BOONE...COOK...DE KALB...
DUPAGE...FORD...GRUNDY...IROQUOIS...KANE...KANKAKEE...
KENDALL...LA SALLE...LAKE IL...LEE...LIVINGSTON...MCHENRY...
OGLE...WILL AND WINNEBAGO. IN INDIANA...BENTON...JASPER...LAKE
IN...NEWTON AND PORTER.
* FROM THURSDAY AFTERNOON THROUGH LATE THURSDAY NIGHT.
* HEAVY RAIN IS EXPECTED TO DEVELOP ACROSS NORTHERN ILLINOIS AND
NORTHWEST INDIANA BY THURSDAY AFTERNOON AND CONTINUE THROUGH
EARLY FRIDAY MORNING. STORM TOTAL RAINFALL AMOUNTS OF 1 TO 2
INCHES WILL BE COMMON. SOME AREAS MAY RECEIVE AS MUCH AS 3
INCHES BY FRIDAY MORNING.
* THE DEPTH OF THE CURRENT SNOW PACK RANGES FROM 5 TO 8 INCHES
OVER NORTHWEST ILLINOIS TO 1 TO 3 INCHES ACROSS NORTHWEST
INDIANA. AS THIS SNOW MELTS...COMBINED WITH THE EXPECTED HEAVY
RAIN...AND FROZEN GROUND CONDITIONS...RAPID RUNOFF AND RISES ON
AREA RIVERS ARE EXPECTED. SOME RIVERS MAY REACH OR EXCEED FLOOD
STAGE. FLOODING OF LOW LYING AND FLOOD PRONE AREAS WILL ALSO BE
POSSIBLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON
CURRENT FORECASTS.
YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE
FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE
PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP.
$$