.DAY ONE…TODAY AND TONIGHT
A VERY SERIOUS AND POTENTIALLY HISTORIC HEAVY RAINFALL AND FLOODING EVENT IS LIKELY THIS AFTERNOON THROUGH MONDAY. A FLASH FLOOD WATCH IS IN EFFECT FOR MOST OF THE REGION.
HEAVY RAIN AND THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS AFTERNOON AND CONTINUE TONIGHT. A FEW OF THE STORMS COULD BE SEVERE ALONG AND SOUTH OF INTERSTATE 70. HEAVY RAIN WILL CAUSE RAPID RISES ALONG CREEKS, STREAMS AND RIVERS. FLASH FLOODING OF LOW LYING AREAS IS LIKELY.
.DAYS TWO THROUGH SEVEN…SUNDAY THROUGH FRIDAY
A VERY SERIOUS AND POTENTIALLY HISTORIC HEAVY RAINFALL AND FLOODING EVENT IS LIKELY THIS AFTERNOON THROUGH MONDAY. A FLASH FLOOD WATCH IS IN EFFECT FOR MOST OF THE REGION.
ANOTHER PERIOD OF POTENTIALLY HEAVY RAINFALL WILL OCCUR SUNDAY THROUGH MONDAY. STORM TOTAL RAINFALL AMOUNTS OF 5 TO 8 INCHES ARE LIKELY ALONG AND SOUTH OF JEFFERSON CITY MISSOURI TO CARLINVILLE ILLINOIS LINE, WITH AMOUNTS OF 3 TO 5 INCHES NORTH OF THIS LINE.
THIS HEAVY RAINFALL WILL LIKELY RESULT IN LIFE-THREATENING FLASH FLOODING OF LOW LYING OR POOR DRAINAGE AREAS…AND SMALLER CREEKS AND STREAMS. FLOODING OF MOST RIVERS IS EXPECTED WITH MAJOR AND POSSIBLY HISTORIC FLOODING ON SOME RIVERS ACROSS THE SOUTHEAST HALF OF MISSOURI AND SOUTHWEST ILLINOIS.