Tornado Watch Until 1 am Wednesday. A watch means "watch out", stay alert, keep an eye on the sky, and stay tuned to local media, make sure your NOAA Weather Radio is turned on, and be ready to head to the basement (or an interior "safe room") if skies turn threatening. SPC has issued this watch until 1 am tomorrow. It includes the northern suburbs of the Twin Cities, St. Cloud and Alexandria, but people living near Brainerd and the Twin Cities should not be complacent. If you live close to a watch box, within 50-75 miles, you may be impacted too.
URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 413 NWS STORM PREDICTION CENTER NORMAN OK 610 PM CDT TUE JUN 19 2012 THE NWS STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF CENTRAL MINNESOTA NORTHEAST SOUTH DAKOTA NORTHWEST WISCONSIN EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 610 PM UNTIL 100 AM CDT. TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 75 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 50 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES WEST OF WATERTOWN SOUTH DAKOTA TO 125 MILES EAST NORTHEAST OF SAINT CLOUD MINNESOTA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3). 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. OTHER WATCH INFORMATION...CONTINUE...WW 412... DISCUSSION...INTENSE WARM FRONT EXTENDS IN A ENEWD FASHION FROM A SFC LOW IN ERN SD...ACROSS CNTRL MN...AND INTO NRN WI. A VERY MOIST...UNSTABLE AND CURRENTLY CAPPED AIR MASS EXISTS NEAR THE SFC LOW AND ALONG THE FRONT. E TO ENE SFC WINDS NEAR THE FRONTAL ZONE VEER STRONGLY TO SLY JUST ABOVE THE SURFACE AND THE SWLY AT MID LEVELS RESULTING IN VOLATILE EFFECTIVE SRH VALUES IN EXCESS OF 500 M2/S2 AND PRONOUNCED HODOGRAPH CURVATURE. GIVEN MOIST BOUNDARY LAYER FOCUSED ALONG THE BOUNDARY...LFC IS ALSO LOCALLY LOW NEAR THE FRONT AND SUPPORTIVE OF STORM UPDRAFTS INITIATING NEARER THE SFC. THERE IS CONSIDERABLE UNCERTAINTY...HOWEVER...REGARDING SFC-BASED STORM INITIATION IN SUCH A STRONGLY CAPPED REGIME. HOWEVER...TIME OF DAY AND STRENGTHENING FORCING FOR DEEP ASCENT IN THE FORM OF AN APPROACHING SHORT WAVE TROUGH AND STRENGTHENING LLJ...WHEN COMBINED WITH SUCH A SUPPORTIVE KINEMATIC ENVIRONMENT FOR TORNADO POTENTIAL...WARRANT THE ISSUANCE OF THE TORNADO WATCH ALONG THE WARM FRONT THIS EVENING. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 25025.
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