THE FLASH FLOOD WATCH IS NOW IN EFFECT FOR
* PORTIONS OF ILLINOIS AND MISSOURI…INCLUDING THE FOLLOWING COUNTIES…IN ILLINOIS…ADAMS IL…BOND IL…BROWN IL… CALHOUN IL…CLINTON IL…FAYETTE IL…GREENE IL…JERSEY IL… MACOUPIN IL…MADISON IL…MARION IL…MONROE IL…MONTGOMERY IL…PIKE IL…ST. CLAIR IL AND WASHINGTON IL. IN MISSOURI… JEFFERSON MO…LEWIS MO…LINCOLN MO…MARION MO…PIKE MO… RALLS MO…ST. CHARLES MO…ST. LOUIS CITY MO AND ST. LOUIS MO.
* THROUGH LATE WEDNESDAY NIGHT
* SEVERAL ROUNDS OF SHOWERS AND THUNDERSTORMS WILL BRING HEAVY RAINFALL AND THE POTENTIAL OF FLASH FLOODING TO THE REGION… MAINLY TONIGHT THROUGH WEDNESDAY EVENING. WIDESPREAD MULTI DAY RAINFALL TOTALS OF 2 TO 4 INCHES ARE LIKELY…WITH LOCALIZED AMOUNTS EXCEEDING 5 INCHES.
* HEAVY RAINFALL WILL RESULT IN FLOODING OF LOW LYING OR POOR DRAINAGE AREAS…AND ULTIMATELY DANGEROUS FLASH FLOODING ON SMALLER CREEKS AND STREAMS. SIGNIFICANT RISES ON LARGER STREAMS AND RIVERS WILL ALSO BE POSSIBLE.