Tornado Watch until 11 PM. Many of the ingredients necessary for supercell thunderstorms are converging on central and eastern Minnesota. Bemidji, Brainerd, St. Cloud and the Twin Cities are all in the watch area, along with much of the St. Croix River Valley. Stay alert this evening - most of us will just see a heavy thunderstorm, possibly some small hail, but large hail, damaging straight-line winds and a few isolated tornadoes can't be ruled out. More details on the watch from NOAA SPC:
URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 475 NWS STORM PREDICTION CENTER NORMAN OK 345 PM CDT SUN AUG 24 2014 THE NWS STORM PREDICTION CENTER HAS ISSUED A * TORNADO WATCH FOR PORTIONS OF NORTHERN AND CENTRAL MINNESOTA NORTHWEST WISCONSIN * EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 345 PM UNTIL 1100 PM CDT. * PRIMARY THREATS INCLUDE... A FEW TORNADOES POSSIBLE ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE MILES EAST AND WEST OF A LINE FROM 75 MILES NORTH NORTHEAST OF BEMIDJI MINNESOTA TO 20 MILES SOUTH OF MINNEAPOLIS MINNESOTA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND 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. DISCUSSION...THUNDERSTORMS ARE EXPECTED TO INCREASE IN COVERAGE AND INTENSITY LATE THIS AFTERNOON INTO EVENING AHEAD OF A COLD FRONT MOVING EAST ACROSS THE WATCH AREA. THE COMBINATION OF MODERATE TO STRONG INSTABILITY AND A VERTICALLY VEERING WIND PROFILE WITH MODERATE AMOUNTS OF LOW-LEVEL AND DEEP-LAYER SHEAR WILL BE SUPPORTIVE OF SUPERCELLS CAPABLE OF A FEW TORNADOES...LARGE HAIL AND DAMAGING WINDS. AVIATION...TORNADOES AND 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 550. MEAN STORM MOTION VECTOR 24025.