HYDROLOGIC OUTLOOK
Issue Date: 1217 PM CST TUE DEC 22 2009
Expiration: 615 PM CST TUE DEC 22 2009

...HEAVY RAINFALL POTENTIAL INCREASING OVER CENTRAL AND SOUTHEAST
ILLINOIS WEDNESDAY AND THURSDAY...
AN INTENSE STORM SYSTEM IS EXPECTED TO SLOWLY PUSH NORTHEAST FROM
THE SOUTHERN PLAINS INTO THE MID MISSISSIPPI VALLEY WEDNESDAY AND
THURSDAY BRINGING WITH IT THE THREAT FOR HEAVY RAINFALL AND FLOODING
OVER PARTS OF CENTRAL...EAST CENTRAL AND SOUTHEAST ILLINOIS. THERE
IS THE POTENTIAL FOR 2 TO 3 INCHES OF RAIN ACROSS THE AREA BY THURSDAY
EVENING...WITH LOCALIZED 4 INCH AMOUNTS POSSIBLE. LOCAL FROST DEPTH
OBSERVATIONS ACROSS CENTRAL ILLINOIS INDICATES VALUES RANGE FROM 3 TO
5 INCHES. RAINFALL OF THIS MAGNITUDE OVER THE FROZEN SURFACE WILL
PRODUCE MOSTLY RUNOFF INTO AREA RIVERS...STREAMS AND CREEKS...INCREASING
THE THREAT FOR FLOODING LATER THIS WEEK.
ALTHOUGH ALL OF THE RIVERS ACROSS CENTRAL...EAST CENTRAL AND SOUTHEAST
ILLINOIS WERE NOW BELOW FLOOD STAGE...RAINFALL AMOUNTS THAT ARE NOW
EXPECTED ACROSS THE AREA INTO LATE THURSDAY WILL CAUSE MANY OF THE
RIVERS...CREEKS AND STREAMS TO EXPERIENCE SIGNIFICANT RISES.
PEOPLE LIVING OR TRAVELING NEAR CREEKS...STREAMS...OR LOW LYING
FLOOD PRONE AREAS SHOULD CLOSELY MONITOR WEATHER CONDITIONS THIS
WEEK. FOR UPDATED RIVER INFORMATION ACROSS CENTRAL AND SOUTHEAST
ILLINOIS...PLEASE VISIT OUR AHPS WEBSITE AT THE FOLLOWING LINK...
HTTP://WWW.CRH.NOAA.GOV/AHPS2/INDEX.PHP?WFO=ILX (ALL LOWER CASE)
$$
SMITH

HAZARDOUS WEATHER OUTLOOK
Issue Date: 1139 AM CST TUE DEC 22 2009
Expiration: 600 AM CST WED DEC 23 2009

Expires:200912231200;;
FLUS43 KILX 221739
HWOILX
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LINCOLN IL
1139 AM CST TUE DEC 22 2009
ILZ027>031-037-038-045-046-231200-
CHAMPAIGN-KNOX-MARSHALL-MCLEAN-PEORIA-STARK-TAZEWELL-VERMILION-
WOODFORD-
1139 AM CST TUE DEC 22 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
ILLINOIS AND EAST CENTRAL ILLINOIS.
.DAY ONE...THIS AFTERNOON AND TONIGHT
FREEZING DRIZZLE WILL BE POSSIBLE TONIGHT...ESPECIALLY NORTH OF
I-74. ONLY A LIGHT ACCUMULATION OF ICE IS EXPECTED THROUGH
WEDNESDAY MORNING...HOWEVER ANY AMOUNT OF ICE CAN MAKE TRAVEL
HAZARDOUS.
.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
SOME FREEZING RAIN MAY CONTINUE THROUGH MID MORNING ON
WEDNESDAY...WITH SOME ADDITIONAL LIGHT ICING POSSIBLE. THERE IS
ALSO THE POTENTIAL FOR HEAVY RAIN WEDNESDAY AFTERNOON INTO THURSDAY.
LOCALIZED FLOODING WILL BE POSSIBLE...ESPECIALLY AS THE RAIN FALLS
ON FROZEN GROUND. PLEASE CONTINUE TO MONITOR LATER FORECASTS AND
STATEMENTS FOR MORE INFORMATION ON THIS DEVELOPING WINTER STORM.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT.
$$

SPECIAL WEATHER STATEMENT
Issue Date: 428 AM CST TUE DEC 22 2009
Expiration: 430 PM CST TUE DEC 22 2009

...A SIGNIFICANT STORM WILL IMPACT THE MIDWEST MIDWEEK...
A STRONG STORM SYSTEM IS EXPECT TO DEVELOP OVER THE WESTERN UNITED
STATES TODAY...AND MOVE SLOWLY EASTWARD THE REST OF THE WEEK. IT
WILL IMPACT MUCH OF THE MIDWEST...BEGINNING LATER TODAY AND
CONTINUING THROUGH CHRISTMAS DAY.
CURRENT INDICATIONS ARE THAT A CHANCE OF LIGHT FREEZING RAIN OR
FREEZING DRIZZLE WILL DEVELOP NORTH OF INTERSTATE 74 TONIGHT. AS
SOUTHEAST WINDS INTENSIFY ON WEDNESDAY...WARM AIR WILL CHANGE ANY
LINGERING FREEZING RAIN TO RAIN ACROSS THE REGION FROM SOUTH TO
NORTH.
AT THIS TIME IT APPEARS THAT THE AMOUNT OF ICING WILL BE
LIGHT...FROM TONIGHT THROUGH WEDNESDAY MORNING. HOWEVER...ANY
FREEZING RAIN OR FREEZING DRIZZLE WILL MAKE TRAVELING DIFFICULT.
THE HEAVIEST PRECIPITATION WILL LIKELY FALL AS RAIN WEDNESDAY
NIGHT AND THURSDAY...WITH THUNDERSTORMS A DISTINCT POSSIBILITY ALONG
AND SOUTH OF INTERSTATE 72. STORM CHANCES WILL BE ESPECIALLY HIGH
DURING CHRISTMAS EVE AS A STRONG COLD FRONT PLOWS THROUGH THE
AREA. LOCALIZED FLOODING WILL BE POSSIBLE DUE TO HEAVY RAINS AND
HIGH RUNOFF OVER THE FROZEN GROUND. ONCE THE STORM PULLS NORTH OF OUR
AREA ON CHRISTMAS DAY...COLD AIR WILL CHANGE THE RAIN TO SNOW
SHOWERS...WITH LIGHT SNOW ACCUMULATION POSSIBLE.
HOLIDAY TRAVELERS NEED TO BE PARTICULARLY ALERT TO TRAVEL CONDITIONS
THIS WEEK. THIS STORM HAS THE POTENTIAL TO SIGNIFICANTLY IMPACT
HIGHWAYS AND AIRPORTS IN THE MIDWEST...PARTICULARLY TO THE NORTH AND
NORTHWEST OF OUR AREA. AT THIS TIME IT APPEARS THE MOST SIGNIFICANT
SNOWFALL AND ICE ACCUMULATIONS WILL OCCUR ACROSS PARTS OF IOWA...
SOUTHERN MINNESOTA...EXTREME SOUTHERN WISCONSIN...AND NORTHERN
ILLINOIS.
$$
SHIMON