Tornado Watch. Conditions are ripe for a few rotating supercell thunderstorms capable of spinning up tornadoes into the late evening hours, especially west of MSP. This is a big watch area, including Brainerd, Alexandria, St. Cloud, Redwood Falls, Rochester and the Twin Cities. There have been a few confirmed reports of funnels and tornadoes near Fergus Falls so the atmosphere is certainly capable of violent weather into tonight. Stay alert and stay tuned for warnings. More details from NOAA SPC:
URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 406 NWS STORM PREDICTION CENTER NORMAN OK 520 PM CDT SUN JUL 12 2015 THE NWS STORM PREDICTION CENTER HAS ISSUED A * TORNADO WATCH FOR PORTIONS OF NORTHWESTERN AND NORTH-CENTRAL IOWA CENTRAL AND SOUTHERN MINNESOTA EXTREME EASTERN SOUTH DAKOTA EXTREME WESTERN WISCONSIN * EFFECTIVE THIS SUNDAY AFTERNOON AND MONDAY MORNING FROM 520 PM UNTIL 100 AM CDT. * PRIMARY THREATS INCLUDE... A FEW TORNADOES POSSIBLE WIDESPREAD DAMAGING WINDS LIKELY WITH ISOLATED SIGNIFICANT GUSTS TO 80 MPH POSSIBLE SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 3 INCHES IN DIAMETER POSSIBLE SUMMARY...COMBINATION OF: 1. EXISTING SEVERE THUNDERSTORMS IN THE SOUTHERN PART OF SPC WATCH 405 AND 2. ADDITIONAL DEVELOPMENT OVER NORTHEASTERN SOUTH DAKOTA ...IS EXPECTED TO RESULT IN AN INITIAL THREAT OF SUPERCELLS FROM THOSE AREAS INTO WESTERN MINNESOTA. DAMAGING HAIL...SEVERE GUSTS AND A FEW TORNADOES ARE EXPECTED. WITH TIME...STORMS SHOULD MERGE AND GROW INTO A LARGE BOWING COMPLEX...OFFERING MAINLY DAMAGING WIND...WITH SOME GUSTS LOCALLY REACHING HURRICANE FORCE. SUCH STORMS STILL MAY POSE A RISK OF A TORNADO OR TWO AS WELL AS ISOLATED LARGE HAIL...AS THEY CROSS MUCH OF SOUTHERN MINNESOTA AND EVENTUALLY PARTS OF WESTERN WISCONSIN AND NORTHERN IOWA. THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 120 STATUTE MILES EITHER SIDE OF A LINE FROM 15 MILES NORTH NORTHEAST OF ALEXANDRIA MINNESOTA TO 60 MILES SOUTHWEST OF ROCHESTER MINNESOTA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6). 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. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 650. MEAN STORM MOTION VECTOR 30030.