482 FPUS63 KDMX 240219 SFPIA IAZ001>064-069>099-240900- IOWA STATE FORECAST...UPDATE NATIONAL WEATHER SERVICE DES MOINES IA 917 PM CDT TUE JUN 23 1998 ...TORNADO WATCH NORTHWEST AND NORTH CENTRAL UNTIL 1 AM... ...FLASH FLOOD WATCH TONIGHT FOR PARTS OF WESTERN...CENTRAL AND NORTHERN IOWA... .TONIGHT...SCATTERED THUNDERSTORMS...SOME SEVERE...WEST AND NORTHWEST THIS EVENING BECOMING MORE WIDESPREAD OVERNIGHT WITH HEAVY RAINFALL POSSIBLE...ESPECIALLY NORTH AND WEST HALF. LOWS MID 60S TO AROUND 70. .WEDNESDAY...A CHANCE OF THUNDERSTORMS EARLY NORTHEAST THIRD. THEN BECOMING PARTLY SUNNY. VERY WARM AND HUMID WITH HIGHS FROM 85 TO 90. .WEDNESDAY NIGHT...A CHANCE OF THUNDERSTORMS NORTH...OTHERWISE PARTLY CLOUDY. LOWS IN THE UPPER 60S TO LOWER 70S. .THURSDAY...PARTLY TO MOSTLY SUNNY. VERY WARM AND HUMID WITH HIGHS IN THE UPPER 80S TO MIDDLE 90S. .EXTENDED FORECAST... .FRIDAY AND SATURDAY...HOT AND HUMID. LOWS 70 TO 75. HIGHS IN THE LOWER TO MIDDLE 90S. .SUNDAY...A CHANCE OF THUNDERSTORMS CENTRAL AND NORTHWEST. LOWS IN THE UPPER 60S TO LOWER 70S. HIGHS IN THE UPPER 80S TO LOWER 90S. SEARCY