SPECIAL WEATHER STATEMENT
Issue Date: 810 PM CST THU DEC 24 2009
Expiration: 1200 AM CST FRI DEC 25 2009

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO IL
810 PM CST THU DEC 24 2009
ILZ003-004-008-010-011-019-250600-
WINNEBAGO-BOONE-OGLE-LEE-DE KALB-LA SALLE-
INCLUDING THE CITIES OF...ROCKFORD...BELVIDERE...OREGON...DIXON...
DEKALB...OTTAWA
810 PM CST THU DEC 24 2009
AN ALREADY STRONG LOW PRESSURE SYSTEM OVER SOUTHERN MISSOURI WILL
STRENGTHEN EVEN FURTHER OVERNIGHT AS IT MOVES NORTH INTO IOWA. ON
THE NORTHEAST SIDE OF THIS STORM SYSTEM...PORTIONS OF NORTH
CENTRAL ILLINOIS ARE SEEING WINDS NEAR 30 MPH GUSTING TO AROUND
35 MPH. THIS IS IN THE SAME AREA WHERE FREEZING RAIN HAS COATED
TREE LIMBS AND POWER LINES. SOME OF THIS ICE HAS STARTED TO
MELT...BUT TEMPERATURES ARE HOVERING BARELY ABOVE FREEZING IN
MANY LOCATIONS. WINDS ARE NOT EXPECTED TO INCREASE MUCH MORE
OVERNIGHT...BUT UNTIL THIS LOW PRESSURE SYSTEM STARTS TO PULL AWAY
TO THE WEST TOMORROW MORNING...THE COMBINATION OF STRONG WINDS AND
RESIDUAL ICE COULD CAUSE ADDITIONAL PROBLEMS WITH FALLING TREE
LIMBS AND POWER LINES IN SOME LOCATIONS.
$$
LENNING

HAZARDOUS WEATHER OUTLOOK
Issue Date: 635 PM CST THU DEC 24 2009
Expiration: 630 PM CST FRI DEC 25 2009

Expires:200912260030;;
FLUS43 KDVN 250025
HWODVN
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
625 PM CST THU DEC 24 2009
IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-260030-
BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-JACKSON-IOWA-JOHNSON-
CEDAR-CLINTON-MUSCATINE-SCOTT-KEOKUK-WASHINGTON-LOUISA-JEFFERSON-
HENRY IA-DES MOINES-VAN BUREN-LEE-JO DAVIESS-STEPHENSON-CARROLL-
WHITESIDE-ROCK ISLAND-HENRY IL-BUREAU-PUTNAM-MERCER-HENDERSON-
WARREN-HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
625 PM CST THU DEC 24 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
ILLINOIS...NORTHWEST ILLINOIS...WEST CENTRAL ILLINOIS...EAST
CENTRAL IOWA...NORTHEAST IOWA...SOUTHEAST IOWA AND NORTHEAST
MISSOURI.
.DAY ONE...TONIGHT
A FLOOD WATCH IS IN EFFECT THROUGH TONIGHT FOR MUCH OF THE
OUTLOOK AREA.
A MAJOR STORM SYSTEM WILL TRACK FROM THE LOWER MISSISSIPPI VALLEY
INTO TO NORTHEAST MISSOURI TONIGHT. WIDESPREAD RAIN AND ISOLATED
THUNDERSTORMS WILL STREAM NORTH AHEAD OF THE STORM TONIGHT. BY
MORNING RAINFALL AMOUNTS OF 1 TO 1.25 INCHES WILL BE POSSIBLE OVER
EAST CENTRAL IOWA AND NORTHWEST AND WEST CENTRAL ILLINOIS. THIS
RAIN WILL BE FALLING ON COLD...FROZEN GROUND AND DENSE SNOW-PACK
ESPECIALLY ALONG AND NORTH OF INTERSTATE 80. THESE CONDITIONS WILL CREATE
SIGNIFICANT RUNOFF...WHICH WILL RESULT IN RISES AND EVENTUAL
FLOODING ALONG SOME AREA RIVERS AND STREAMS...AS WELL AS FLOODING
OF LOW LYING OR POORLY DRAINED AREAS.
.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY
THE RAIN WILL CHANGE TO SNOW FRIDAY MORNING FROM THE SOUTHWEST TO
THE NORTHEAST. LIGHT TO MODERATE SNOW WILL CONTINUE THROUGH SATURDAY
AFTERNOON. BY SATURDAY EVENING SNOW ACCUMULATIONS IN THE 2 TO 4
INCHE INCH RANGE ARE EXPECTED OVER MOST OF THE AREA.
LIGHT SNOW OR FLURRIES WILL CONTINUE SATURDAY NIGHT INTO SUNDAY
NIGHT WITH LITTLE ADDITIONAL ACCUMULATION.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED TONIGHT. HOWEVER REPORTS OF
RAINFALL TOTALS TONIGHT AND SNOW ACCUMULATIONS FRIDAY THROUGH
SUNDAY WILL BE APPRECIATED.
$$

HAZARDOUS WEATHER OUTLOOK
Issue Date: 417 PM CST THU DEC 24 2009
Expiration: 400 PM CST FRI DEC 25 2009

/457 PM EST THU DEC 24 2009/
THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
.DAY ONE...TONIGHT.
A STEADY RAIN WILL BE FALLING MOST OF THE NIGHT. THERE WILL BE
PERIODS OF MODERATE RAIN...AND SOME HEAVY RAIN IS POSSIBLE.
WIDESPREAD RAINFALL OF 1 TO 1.5 INCHES OVERNIGHT WILL COMBINE WITH
MELTING SNOW AND ICE TO CREATE SIGNIFICANT AMOUNTS OF WATER
RUNOFF. THIS WILL RESULT IN SIGNIFICANT RISES ON AREA RIVERS AND
STREAMS...WITH FLOODING POSSIBLE. FLOODING OF LOW LYING...FLOOD
PRONE AREAS IS LIKELY TO OCCUR.
.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.
HIGH RIVER AND STREAM LEVELS...AS WELL AS ANY FLOODING THAT MAY
OCCUR FROM THE RAINFALL AND SNOW MELT WILL LIKELY PERSIST INTO
THE WEEKEND.
PRECIPITATION IS EXPECTED TO CHANGE TO SNOW SHOWERS DURING THE
DAY FRIDAY. OFF AND ON SNOW SHOWERS WILL PERSIST THROUGH LATE
SUNDAY. MINOR ACCUMULATIONS MAY OCCUR...WITH A TOTAL OF 1 TO 3
INCHES OF SNOW FALLING OVER THE FRIDAY THROUGH SUNDAY PERIOD.
SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NECESSARY TONIGHT...HOWEVER
SPOTTERS ARE ENCOURAGED TO REPORT ANY MEASUREMENTS OF SIGNIFICANT
RAINFALL AS WELL AS ANY OBSERVED FLOODING TO THE CHICAGO OFFICE
OF THE NATIONAL WEATHER SERVICE.
&&
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.
$$