...HEAVY RAINFALL POTENTIAL THIS WEEKEND...
THE REMNANTS OF TROPICAL CYCLONE ISAAC WILL MOVE NORTH INTO THE
MID MISSISSIPPI VALLEY BY LATE FRIDAY NIGHT AND SLOWLY PROGRESS
EASTWARD DURING THE WEEKEND...LIKELY ACROSS CENTRAL ILLINOIS. HIGH
AMOUNTS OF MOISTURE WILL ACCOMPANY THE SYSTEM AND PROVIDE THE
POTENTIAL FOR HEAVY RAINFALL RATES THAT OFTEN OCCUR WITH INLAND
TROPICAL SYSTEMS. THE PRECISE PATH OF THE SYSTEM REMNANTS REMAIN
HIGHLY UNCERTAIN...BUT THERE IS THE CHANCE FOR TOTAL RAINFALL
AMOUNTS BY LATE SUNDAY AT OR IN EXCESS OF TWO TO FIVE INCHES
ACROSS PARTS OF THE KANKAKEE AND VERMILION RIVER BASINS AND
SOUTHWARD. THIS INCLUDES THE IROQUOIS RIVER...AND INDIAN AND SUGAR
CREEKS.
WHILE CONDITIONS HAVE PRIMARILY BEEN DRY FOR MANY MONTHS AND MOST
STREAM FLOWS ARE BELOW NORMAL...THERE WAS RECENTLY HEAVY RAIN ON
AUGUST 26TH THAT MAY HAVE LOCALLY LOWERED THE GROUNDS WATER
CAPACITY. ALSO...IF HEAVY RAINFALL RATES WERE TO OCCUR...THESE CAN
LEAD TO FLASH FLOODING AND QUICK RISES ON SMALLER BASIN STREAMS AT
ANY TIME...EVEN WHEN EXPERIENCING PROLONGED DROUGHT.
THOSE WITH HYDROLOGIC INTERESTS SHOULD CONTINUE TO MONITOR
OUTLOOKS AND FORECAST RAINFALL AMOUNTS INTO THE HOLIDAY
WEEKEND AS THE FORECAST IS FURTHER REFINED.
