000 AWUS83 KFSD 200841 RWSFSD SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098-IAZ001>003- 012>014-020>022-031-032-NEZ013-014-201600- WEATHER SUMMARY FOR THE NORTH CENTRAL UNITED STATES NATIONAL WEATHER SERVICE SIOUX FALLS SD 341 AM CDT FRI MAY 20 2005 HIGH PRESSURE CENTERED OVER THE GREAT LAKES REGION...WILL KEEP THE EASTERN HALF OF THE NORTHERN PLAINS DRY AND PLEASANT TODAY. MEANWHILE...LOW PRESSURE FORMING OVER THE WESTERN HIGH PLAINS...WILL BRING AN INCREASING CHANCE OF THUNDERSTORMS TO THE WESTERN DAKOTAS AND WESTERN NEBRASKA TODAY. AN EARLY TASTE OF SUMMER WILL TOUCH THE WESTERN PART OF THE REGION TODAY...AS TEMPERATURES CLIMB INTO THE LOW 90S ACROSS CENTRAL AND WESTERN NEBRASKA AND PORTIONS OF SOUTH CENTRAL AND SOUTHWEST SOUTH DAKOTA THIS AFTERNOON. THE THUNDERSTORM THREAT WILL SPREAD EAST ACROSS THE DAKOTAS AND NEBRASKA LATE TODAY AND TONIGHT...AS THE AREA OF LOW PRESSURE DRIFTS SLOWLY EAST. HEAVY RAIN AND SOME SEVERE WEATHER WILL BE POSSIBLE TONIGHT...ESPECIALLY ACROSS NORTH DAKOTA. SHOWERS AND THUNDERSTORMS WILL SHIFT FROM THE EASTERN DAKOTAS AND EASTERN NEBRASKA INTO MINNESOTA AND IOWA ON SATURDAY...WHILE THE WESTERN HIGH PLAINS BECOMES PARTLY CLOUDY...WINDY AND COOLER ON SATURDAY. EXCEPT FOR SOME SHOWER ACTIVITY ACROSS NORTHERN MINNESOTA...IT SHOULD BE DRY...MILD AND BREEZY ACROSS THE NORTHERN PLAINS ON SUNDAY. HIGH TEMPERATURES TODAY WILL RANGE FROM THE UPPER 60S OVER EASTERN MINNESOTA AND EASTERN IOWA...TO THE LOW 90S ACROSS MUCH OF CENTRAL AND WESTERN NEBRASKA AND PARTS OF SOUTH CENTRAL AND SOUTHWEST SOUTH DAKOTA. LOWS TONIGHT WILL BE IN THE 50S NORTH AND EAST...TO THE MID 60S ACROSS MUCH OF NEBRASKA AND PARTS OF SOUTH DAKOTA. HIGHS ON SATURDAY WILL VARY FROM THE 70S NORTH AND EAST...TO THE MID 80S ACROSS SOUTHERN NEBRASKA. $$ GH