291 FPUS63 KDMX 212106 SFPIA IAZALL-220930- IOWA STATE FORECAST NATIONAL WEATHER SERVICE DES MOINES IA 403 PM CDT WED JUL 21 1999 ...HEAT ADVISORY FOR SOUTHERN IOWA TODAY THROUGH FRIDAY... .TONIGHT...FAIR TO PARTLY CLOUDY. SCATTERED THUNDERSTORMS OVER ABOUT THE NORTH HALF. LOWS IN THE UPPER 60S NORTH TO MID 70S SOUTH. .THURSDAY...HOT AND HUMID WITH A SLIGHT CHANCE OF THUNDERSTORMS FAR EAST. HIGHS 90 TO 100. .THURSDAY NIGHT...A CHANCE OF THUNDERSTORMS FAR NORTHWEST OTHERWISE FAIR WITH LOWS IN THE LOW TO MID 70S. .FRIDAY...MOSTLY SUNNY...HOT...AND HUMID. HIGHS 90 TO 100. .FRIDAY NIGHT...FAIR WITH LOWS IN THE 70S. .EXTENDED FORECAST... .SATURDAY THROUGH MONDAY...CONTINUED VERY WARM AND HUMID. A CHANCE OF THUNDERSTORMS LATE MONDAY. LOWS IN THE LOW TO MID 70S AND HIGHS IN THE 90S. $$ MS JUL 99