

321 

WWUS20 KWNS 271717

SEL8

SPC WW 271717

AZZ000-UTZ000-280100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 508

NWS STORM PREDICTION CENTER NORMAN OK

1015 AM MST SAT SEP 27 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  CENTRAL ARIZONA

  SOUTH-CENTRAL UTAH



* EFFECTIVE THIS SATURDAY MORNING AND EVENING FROM 1015 AM UNTIL

  600 PM MST.



* PRIMARY THREATS INCLUDE...

  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80

STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES EAST

SOUTHEAST OF GILA BEND ARIZONA TO 10 MILES WEST NORTHWEST OF

HANKSVILLE UTAH.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 507...



DISCUSSION...A NORTH-SOUTH-ORIENTED BAND OF THUNDERSTORMS IS

EXPECTED TO SPREAD EAST ACROSS THE WATCH AREA THIS AFTERNOON INTO

EVENING. GIVEN A FAVORABLE OVERLAP OF A MOIST...UNSTABLE AIR MASS

WITH A MODERATE AMOUNT OF VERTICAL SHEAR...THE POTENTIAL WILL EXIST

FOR EMBEDDED SUPERCELL AND BOWING STRUCTURES WITH THE PRIMARY

HAZARDS BEING DAMAGING WIND GUSTS AND LARGE HAIL.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 19030.





...MEAD



950 

WWUS20 KWNS 271717

SEL8

SPC WW 271717

AZZ000-UTZ000-280100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 508

NWS STORM PREDICTION CENTER NORMAN OK

1015 AM MST SAT SEP 27 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  CENTRAL ARIZONA

  SOUTH-CENTRAL UTAH



* EFFECTIVE THIS SATURDAY MORNING AND EVENING FROM 1015 AM UNTIL

  600 PM MST.



* PRIMARY THREATS INCLUDE...

  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80

STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES EAST

SOUTHEAST OF GILA BEND ARIZONA TO 10 MILES WEST NORTHWEST OF

HANKSVILLE UTAH.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 507...



DISCUSSION...A NORTH-SOUTH-ORIENTED BAND OF THUNDERSTORMS IS

EXPECTED TO SPREAD EAST ACROSS THE WATCH AREA THIS AFTERNOON INTO

EVENING. GIVEN A FAVORABLE OVERLAP OF A MOIST...UNSTABLE AIR MASS

WITH A MODERATE AMOUNT OF VERTICAL SHEAR...THE POTENTIAL WILL EXIST

FOR EMBEDDED SUPERCELL AND BOWING STRUCTURES WITH THE PRIMARY

HAZARDS BEING DAMAGING WIND GUSTS AND LARGE HAIL.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 19030.





...MEAD

