Friday, July 4, 2008

MESO: Mesoscale Discussion 1685

ACUS11 KWNS 050058
SWOMCD
SPC MCD 050057
AZZ000-050200-

MESOSCALE DISCUSSION 1685
NWS STORM PREDICTION CENTER NORMAN OK
0757 PM CDT FRI JUL 04 2008

AREAS AFFECTED...PARTS OF CENTRAL/SRN AZ

CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY

VALID 050057Z - 050200Z

ISOLATED DAMAGING WIND GUSTS WILL BE POSSIBLE INTO THE EVENING
ATTENDANT TO ONGOING TSTMS AND NEW DEVELOPMENT IN THE VICINITY OF
AND W OF PHX METRO AREA.

REGIONAL RADARS SHOWED OUTFLOW BOUNDARIES...ATTENDANT TO TSTMS
EXTENDING FROM CENTRAL YAVAPAI TO WRN GILA COUNTIES...AND THEN SWD
TO NRN PINAL COUNTY...CONTINUING TO PROPAGATE SWD AND WWD...
RESPECTIVELY. A DEEPLY MIXED BOUNDARY LAYER IN THE VICINITY OF AND
W OF PHX METRO AREA...SURFACE DEWPOINT DEPRESSIONS AROUND 50 AND 0-3
KM LAPSE RATES AROUND 9.5 C/KM...WILL PROMOTE THE POTENTIAL FOR
LOCALLY STRONG TO SEVERE WIND GUSTS AS ACTIVITY PROPAGATES INTO THE
VALLEY/DESERT. 00Z SOUNDING AT PHX INDICATED WEAK MID LEVEL FLOW
WHICH SHOULD PRECLUDE AN INCREASE IN STORM ORGANIZATION...WITH THE
MAIN THREAT BEING DUE TO THERMODYNAMICLY ENHANCED WIND THREAT.

..PETERS.. 07/05/2008

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

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

34011248 33991188 33901152 33311136 32831139 32701190
32561269 32651321 33141324 33531332 33921327 34391301

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