000 
NZUS43 KFSD 270923
RWSFSD

REGIONAL WEATHER SYNOPSIS
NATIONAL WEATHER SERVICE SIOUX FALLS SD
400 AM CDT TUE MAY 27 2003

HIGH PRESSURE OVER NORTHERN ILLINOIS WILL CONTINUE TO DOMINATE THE 
WEATHER OVER THE TRI STATE AREA BY PROVIDING DRY CONDITIONS THROUGH 
MOST OF TODAY.  HOWEVER...BY AFTERNOON A WEAK COLD FRONT THAT IS 
CURRENTLY OVER EASTERN WYOMING WILL BE PROGRESSING ACROSS THE 
DAKOTAS.  AS THE FRONT INCHES EASTWARD...THUNDERSTORMS WILL BECOME A 
POSSIBILITY.  THE LIMITING FACTOR TO THIS DEVELOPMENT WILL BE THE 
AMOUNT OF MOISTURE THAT WILL BE AVAILABLE.  AT THIS TIME...IT LOOKS 
LIKE MOST OF THE REGION SHOULD REMAIN DRY THROUGH TONIGHT AS THE 
LOWER LEVELS OF THE ATMOSPHERE ARE FORECAST TO REMAIN RELATIVELY 
DRY...LIMITING THE THUNDERSTORM CHANCES.  THE BEST CHANCES FOR RAIN
TONIGHT WILL BE IN NORTH DAKOTA AND NORTHERN SECTIONS OF MINNESOTA.  

FOR MOST OF THE REGION...HIGH TEMPERATURES TODAY WILL BE A FEW 
DEGREES WARMER THAN THOSE OF YESTERDAY WITH MAINLY 80S...EXCEPT FOR 
70S IN NORTHERN SECTIONS OF MINNESOTA.  LOW TEMPERATURES TONIGHT 
WILL BE IN THE 40S AND 50S. 

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HEITKAMP