Severe Storm Outlook Narrative (AC)
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000
ACUS11 KWNS 272309
SWOMCD
SPC MCD 272308
AZZ000-280115-

MESOSCALE DISCUSSION 1772
NWS STORM PREDICTION CENTER NORMAN OK
0608 PM CDT SAT SEP 27 2014

AREAS AFFECTED...CNTRL AZ INTO SRN UT

CONCERNING...SEVERE THUNDERSTORM WATCH 508...

VALID 272308Z - 280115Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 508
CONTINUES.

SUMMARY...ISOLATED STRONG TO SEVERE WIND GUSTS WILL REMAIN POSSIBLE
THIS EVENING N AND E OF THE PHOENIX AREA...WITH HEAVY RAIN
PERSISTING AS WELL. THE SEVERE THREAT IS EXPECTED TO END FROM W TO E
BEHIND THE MAIN CLUSTER OF CELLS WITH ONLY NON-SEVERE STORMS
THEREAFTER.

DISCUSSION...AN INITIAL SURGE OF DAMAGING WINDS AND HEAVY RAIN
CONTINUES TO MOVE RAPIDLY NEWD TOWARD THE RIM AFTER CAUSING DAMAGE
IN THE PHOENIX AREA. ADDITIONAL STORMS HAVE REGENERATED ACROSS PINAL
COUNTY WHERE SLY WINDS ARE MAINTAINING A FEED OF MOIST AND UNSTABLE
AIR NWD AND INTERACTING WITH EXISTING OUTFLOW.

AS THE MAIN FRONT AND UPPER SYSTEM CONTINUE EWD...THE THETA-E AXIS
WILL GRADUALLY TRANSLATE EWD WITH UPSLOPE ENHANCEMENT ACROSS THE
MOGOLLON RIM AND TOWARD THE WHITE MOUNTAINS LATER THIS EVENING.
HERE...VERY HEAVY RAIN WILL REMAIN A CONCERN...BUT THE LOSS OF
HEATING SHOULD RESULT IN A DECREASE IN SEVERE WIND POTENTIAL. AS A
RESULT...AN ADDITIONAL WATCH IS NOT EXPECTED.

FARTHER N INTO NRN AZ AND SRN UT...THE SEVERE THREAT APPEARS MORE
MARGINAL GIVEN LESS INSTABILITY...BUT STRONG DEEP-LAYER SHEAR AND A
DRIER BOUNDARY LAYER MAY SUPPORT HIGH BASED CELLS CAPABLE OF LOCALLY
SEVERE WINDS AND SMALL HAIL.

..JEWELL.. 09/27/2014

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...TWC...FGZ...PSR...

LAT...LON   33400927 33180925 32940926 32720936 32510960 32300996
            32101066 32061114 32201166 32471189 32801201 33611210
            34501192 35411180 35641123 35671066 35391014 34940988
            34460961 33730934 33400927



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