HYDROLOGIC OUTLOOK
Warning Issue Date: 414 AM CST TUE DEC 22 2009
HEAVY RAINFALL AND FLOODING POSSIBLE WEDNESDAY AND THURSDAY...
A LARGE STORM SYSTEM IS EXPECTED TO BRING PERIODS OF MODERATE AND
HEAVY RAINFALL TO MISSOURI AND ILLINOIS ON WEDNESDAY AND
THURSDAY. IN ADDITION TO THE RAIN...THUNDERSTORMS ARE EXPECTED
WHICH WILL LEAD TO ENHANCED RAINFALL RATES AND THE POTENTIAL OF
FLASH FLOODING.
GENERALLY 1 TO 2 INCHES OF RAINFALL IS EXPECTED AREAWIDE FROM THIS
STORM SYSTEM WITH LOCALLY HIGHER AMOUNTS...UP TO 4 INCHES...WHERE
THUNDERSTORMS ARE OBSERVED.
LATEST SOIL TEMPERATURE OBSERVATIONS INDICATE THAT THE FROST DEPTH
CURRENTLY RANGES FROM 8 INCHES ACROSS NORTHEAST MISSOURI AND WEST
CENTRAL ILLINOIS TO 2 INCHES ACROSS PORTIONS OF THE EASTERN OZARKS
AND SOUTHWEST ILLINOIS.
THE FROZEN SURFACE OF THE SOIL AND LACK OF VEGETATION WILL CAUSE
MUCH OF THE RAINFALL TO BECOME RUNOFF INTO CREEKS...STREAMS AND
RIVERS. INTENSE RAINFALL RATES FROM THUNDERSTORMS ON A FROZEN
SURFACE COULD CERTAINLY LEAD TO FLASH FLOODING OF LOW LYING
AREAS.
PEOPLE LIVING OR TRAVELING NEAR CREEKS...STREAMS...OR LOW LYING
FLOOD PRONE AREAS SHOULD CLOSELY MONITOR WEATHER CONDITIONS THIS
WEEK. IT IS ESPECIALLY IMPORTANT FOR THOSE WITH PROPERTY ALONG
RIVERS TO STAY ABREAST OF THE LATEST INFORMATION FROM THE NATIONAL
WEATHER SERVICE.
$$
CVKING
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