000 AWUS83 KFSD 080155 RWSFSD SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098-IAZ001>003- 012>014-020>022-031-032-NEZ013-014-081100- WEATHER SUMMARY FOR THE NORTH CENTRAL UNITED STATES NATIONAL WEATHER SERVICE SIOUX FALLS SD 855 PM CDT SUN AUG 7 2005 AN AREA OF LOW PRESSURE WILL SCOOT ACROSS NORTH DAKOTA OVERNIGHT...SETTLING OVER NORTHERN MINNESOTA ON MONDAY. A WEAK FRONTAL BOUNDARY WILL BECOME NEARLY STATIONARY ON MONDAY...EXTENDING FROM THE MINNESOTA LOW PRESSURE...SOUTHWESTWARD ACROSS SOUTH DAKOTA TO ANOTHER AREA OF LOW PRESSURE LOCATED OVER NORTHEAST WYOMING. THE LOW PRESSURE AND FRONTAL BOUNDARY WILL TRIGGER WIDELY SCATTERED THUNDERSTORMS ACROSS THE NORTHERN PART OF THE REGION TONIGHT AND MONDAY. THE FRONTAL BOUNDARY WILL BEGIN TO DRIFT SOUTH MONDAY NIGHT AND TUESDAY...WITH THE THUNDERSTORM ACTIVITY ALSO SHIFTING SLOWLY SOUTH WITH TIME. HOT AND HUMID CONDITIONS WILL CONTINUE SOUTH OF THE FRONTAL BOUNDARY...WITH SOMEWHAT COOLER AIR ACROSS THE NORTH. WITH A FAST JET STREAM SETTING UP OVER THE NORTHERN UNITED STATES...THE WEATHER WILL LIKELY REMAIN UNSETTLED OVER THE NORTHERN PLAINS FOR MOST OF THIS WEEK. EXCEPT FOR SOME 50S NEAR THE CANADIAN BORDER...OVERNIGHT LOWS WILL BE IN THE 60S TO MID 70S. HIGHS ON MONDAY WILL VARY FROM THE 80S IN NORTHERN MINNESOTA AND NORTHERN NORTH DAKOTA...TO 90 TO 105 DEGREES ELSEWHERE. HIGH HUMIDITY WILL ADD TO THE HEAT DISCOMFORT FROM THE MISSOURI RIVER EASTWARD MONDAY AFTERNOON. $$ GH