[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 280104
SWOMCD
SPC MCD 280103 
NMZ000-AZZ000-280230-

MESOSCALE DISCUSSION 1790
NWS STORM PREDICTION CENTER NORMAN OK
0803 PM CDT TUE JUL 27 2004

AREAS AFFECTED...PARTS OF CENTRAL/SERN AZ

CONCERNING...SEVERE THUNDERSTORM WATCH 670...

VALID 280103Z - 280230Z

POTENTIALLY SEVERE TSTMS OVER GILA COUNTIES ATTM...AND STRONG
CONVECTION SEWD ACROSS GRAHAM COUNTY...MAY PRODUCE DAMAGING GUSTS IN
NEXT HOUR BEFORE WEAKENING.  ANOTHER AREA OF TSTMS HAS MOVED INTO
NRN MARICOPA COUNTY AND PRODUCED AN OUTFLOW POOL THAT IS SURGING
AWAY FROM HIGHEST REFLECTIVITIES ATTM. OUTFLOW BOUNDARY SHOULD
CONTINUE TO SURGE SWD ACROSS REMAINDER PHX AREA AND OVER PORTIONS
SRN MARICOPA/WRN PINAL COUNTIES BEFORE DISSIPATING. 
MEANWHILE...PARENT CONVECTION NOW OVER NRN PHX METRO WILL MOVE SEWD
AND WEAKEN...PRODUCING OCCASIONAL GUSTS NEAR SEVERE LEVELS.  WIND
DAMAGE POTENTIAL OVERALL SHOULD DECREASE MARKEDLY AFTER ABOUT
ANOTHER HOUR OVER THIS REGION...BECAUSE OF EXPANDING OUTFLOW
POOLS...WEAKENING DIABATIC HEATING AND DIMINISHING CONVECTIVE
TRENDS.  REMAINDER WW PROBABLY WILL BE ALLOWED TO EXPIRE AS
SCHEDULED AT 02Z WITHOUT FURTHER ISSUANCE.

..EDWARDS.. 07/28/2004

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

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

31980904 33771329 35521329 33740906 

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