HYDROLOGIC OUTLOOK
Warning Issue Date: 747 PM CST WED DEC 23 2009
THE LITTLE WABASH RIVER.
THE FOLLOWING FLOOD FORECASTS ARE BASED PRIMARILY ON EXPECTED
RAINFALL OVER THE NEXT 24 HOURS. THERE IS SOME UNCERTAINTY IN THE
CREST FORECASTS AT THIS TIME AND SO THEY WILL LIKELY BE ADJUSTED ONCE
THE RAINFALL IS OBSERVED.
FOR THE LITTLE WABASH RIVER NEAR CLAY CITY...THE LATEST STAGE IS 10.5
FEET AT 7 PM WEDNESDAY. FLOOD STAGE IS 16.0 FEET. MINOR FLOODING IS
FORECAST...WITH A CREST OF 20.3 FEET SATURDAY EVENING...WHICH IS 4.3
FEET ABOVE FLOOD STAGE. THE RIVER SHOULD RISE ABOVE THE FLOOD STAGE
OF 16.0 FEET TOMORROW AFTERNOON. AT 22.0 FEET...THE ROAD 1 MILE
EAST OF THE GAGE IS FLOODED.
FLD OBSERVED FORECAST 6AM
LOCATION STG STG DAY TIME THU FRI SAT
LITTLE WABASH RIVER
CLAY CITY 16 10.5 WED 7 PM 12.2 18.2 20.0
$$
FLOOD WATCH
Warning Issue Date: 1105 PM CST WED DEC 23 2009
...FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY EVENING...
THE FLOOD WATCH CONTINUES FOR
* PORTIONS OF CENTRAL ILLINOIS...EAST CENTRAL ILLINOIS AND
SOUTHEAST ILLINOIS...INCLUDING THE FOLLOWING AREAS...IN
CENTRAL ILLINOIS...CASS...CHRISTIAN...DE WITT...FULTON...
KNOX...LOGAN...MACON...MARSHALL...MASON...MCLEAN...MENARD...
MORGAN...MOULTRIE...PEORIA...PIATT...SANGAMON...SCHUYLER...
SCOTT...SHELBY...STARK...TAZEWELL AND WOODFORD. IN EAST
CENTRAL ILLINOIS...CHAMPAIGN...CLARK...COLES...CUMBERLAND...
DOUGLAS...EDGAR AND VERMILION. IN SOUTHEAST ILLINOIS...CLAY...
CRAWFORD...EFFINGHAM...JASPER...LAWRENCE AND RICHLAND.
* THROUGH THURSDAY EVENING
* EXPECT PERIODS OF MODERATE TO LOCALLY HEAVY RAINFALL WITH
ISOLATED THUNDERSTORMS. RAINFALL AMOUNTS OF 2 TO 3 INCHES WILL
BE POSSIBLE...WITH SOME LOCALLY HIGHER AMOUNTS.
* THE LATEST SOIL TEMPERATURES ACROSS CENTRAL ILLINOIS INDICATE
THE FROST DEPTH AT BETWEEN 3 TO 5 INCHES. THE COMBINATION OF
THE EXPECTED RAINFALL COUPLED WITH THE FROZEN TOPSOIL WILL
HELP TO PRODUCE SIGNIFICANT RUNOFF INTO AREA RIVERS...CREEKS
AND STREAMS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON
CURRENT FORECASTS.
YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE
FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE
PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP.
$$
AUTEN
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