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URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 694

NWS STORM PREDICTION CENTER NORMAN OK

930 AM MST WED OCT 6 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       LARGE PART OF CENTRAL AND NORTHERN ARIZONA

       PORTIONS OF SOUTHERN AND EASTERN UTAH



EFFECTIVE THIS WEDNESDAY MORNING AND AFTERNOON FROM 930 AM UNTIL

500 PM 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 85 STATUTE

MILES EAST AND WEST OF A LINE FROM 60 MILES SOUTH SOUTHWEST OF

WINSLOW ARIZONA TO 30 MILES NORTHWEST OF HANKSVILLE UTAH.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU4).



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...THIS TORNADO WATCH REPLACES SEVERE

THUNDERSTORM WATCH NUMBER 692...TORNADO WATCH NUMBER 693. WATCH

NUMBER 692 693 WILL NOT BE IN EFFECT AFTER 930 AM MST.



DISCUSSION...SHORTWAVE TROUGH OVER SRN AZ WILL LIFT NNEWD THROUGH

THE DAY AND MAINTAIN NUMEROUS THUNDERSTORMS.  DEEP LAYER SHEAR AND

MUCAPES FROM 500 TO 1000 J/KG WILL CONTINUE TO BE SUPPORTIVE OF

SUPERCELLS.  WHILE SEVERE HAIL SHOULD BE THE PRIMARY THREAT...

BACKED LOW LEVEL WINDS THAT VEER AND STRENGTHEN WITH HEIGHT PLUS

MOIST BOUNDARY LAYER WILL BE FAVORABLE FOR A FEW TORNADOES.



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 20040.





...IMY

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