

989 

WWUS20 KWNS 061347

SEL3

SPC WW 061347

AZZ000-061800-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 693

NWS STORM PREDICTION CENTER NORMAN OK

650 AM MST WED OCT 6 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTHERN ARIZONA



EFFECTIVE THIS WEDNESDAY MORNING FROM 650 AM UNTIL 1100 AM MST.



TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE

MILES EAST AND WEST OF A LINE FROM 75 MILES NORTHEAST OF GRAND

CANYON ARIZONA TO 45 MILES SOUTH SOUTHEAST OF PRESCOTT ARIZONA.

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 692...



DISCUSSION...AS UPPER WAVE MOVES THROUGH THE AREA...STRONG LOW/DEEP

LAYER SHEAR AND MUCAPES FROM 500-1000 J/KG WILL SUPPORT ROTATING

STORMS AND THE POSSIBILITY OF TORNADOES THROUGH THE MORNING.



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

450. MEAN STORM MOTION VECTOR 21040.





...IMY

