Flash Flood Watch n effect through Monday morning

Weather

June 23rd, 2013 by Ric Hanson

AREA COUNTIES: CRAWFORD-CARROLL-AUDUBON-GUTHRIE-DALLAS….

345 AM CDT SUN JUN 23 2013

…HEAVY RAIN AND FLASH FLOODING POSSIBLE THIS AFTERNOON THROUGH TONIGHT…

A COOL FRONT AND STORM SYSTEM OVER THE PLAINS WILL COMBINE TO INCREASE THUNDERSTORM CHANCES THIS AFTERNOON AND TONIGHT ACROSS CENTRAL IOWA. THERE MAY BE SEVERAL ROUNDS OF THUNDERSTORMS FROM THIS AFTERNOON THROUGH TONIGHT. AMPLE MOISTURE IN THE ATMOSPHERE

…FLASH FLOOD WATCH IN EFFECT FROM 1 PM CDT THIS AFTERNOON THROUGH MONDAY MORNING…

* SEVERAL ROUNDS OF THUNDERSTORMS ARE POSSIBLE TODAY AND TONIGHT. RAINFALL AMOUNTS MAY TOTAL 2 TO 3 INCHES WITH ISOLATED AMOUNTS OF 4 OR MORE INCHES OF RAIN BY MONDAY MORNING IN SOME LOCATIONS. AT THIS TIME THE NORTHERN TWO THIRDS OF CENTRAL IOWA ARE FAVORED FOR THE HEAVIER RAINFALL. THE AREA OF HEAVY RAIN AND POTENTIAL FOR FLASH FLOODING MAY BE EXPANDED SOUTH INTO SOUTHERN IOWA FOR LATER TODAY AND TONIGHT.

* THUNDERSTORMS ARE EXPECTED TO INCREASE BY EARLY AFTERNOON OVER NORTHERN IOWA AND STRENGTHEN AS THEY MOVE SOUTH THIS AFTERNOON AND TONIGHT WHEN THE POTENTIAL FOR FLASH FLOODING WILL BE THE GREATEST. RAINFALL RATES OF SEVERAL INCHES PER HOUR MAY CAUSE FLASH FLOODING OF CREEKS AND STREAMS ALONG WITH THE POTENTIAL FOR URBAN FLASH FLOODING.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED.