Severe Storm Watch until 10 PM. NOAA SPC has issued a watch until 10 PM, including St. Cloud, Redwood Falls, Alexandria, Wheaton, Detroit Lakes, Fergus Falls and the Fargo-Moorhead area. Details:
URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 248 NWS STORM PREDICTION CENTER NORMAN OK 250 PM CDT SUN JUN 12 2016 THE NWS STORM PREDICTION CENTER HAS ISSUED A * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF WESTERN MINNESOTA SOUTHEAST AND EAST CENTRAL NORTH DAKOTA NORTHEAST SOUTH DAKOTA * EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 250 PM UNTIL 1000 PM CDT. * PRIMARY THREATS INCLUDE... SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE A TORNADO OR TWO POSSIBLE SUMMARY...THUNDERSTORMS HAVE INTENSIFIED NEAR THE SD/ND/MN BORDER AND ARE EXPECTED TO MOVE NORTHEAST INTO WEST CENTRAL MINNESOTA DURING THE LATE AFTERNOON. ADDITIONAL STORMS MAY DEVELOP TO THE WEST CLOSER TO THE SURFACE LOW AND ASSOCIATED COLD FRONT LATER THIS AFTERNOON...WITH ALL ACTIVITY CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WIND GUSTS. THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75 STATUTE MILES EAST AND WEST OF A LINE FROM 45 MILES EAST SOUTHEAST OF WATERTOWN SOUTH DAKOTA TO 50 MILES NORTH NORTHEAST OF FARGO NORTH DAKOTA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES. AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 24025.
Developing Squall Line. The 3:30 pm visible cloud loop shows strong to severe storms popping over far western Minnesota; the primary risk is damaging (straight-line) winds, but large hail and a few isolated tornadoes can't be ruled out.
HRRR Model: 1 AM Monday. NOAA's hourly 2.5 km resolution HRRR suggests strong T-storms entering the metro shortly before midnight. Although the severe risk will have diminished, small hail, 50 mph gusts and frequent lightning may accompany this line of storms.