[MCD] SWOMCD

Wed Jul 26 04:14:27 UTC 2006

ACUS11 KWNS 260412
SWOMCD
SPC MCD 260411 
AZZ000-260515-

MESOSCALE DISCUSSION 1629
NWS STORM PREDICTION CENTER NORMAN OK
1111 PM CDT TUE JUL 25 2006

AREAS AFFECTED...SWRN AZ

CONCERNING...SEVERE THUNDERSTORM WATCH 645...

VALID 260411Z - 260515Z

THREAT FOR DAMAGING WIND AND HAIL IS EXPECTED TO PERSIST AS STORMS
SPREAD SWWD THROUGH THE REMAINDER OF SWRN AZ. IN ADDITION...VERY
HEAVY RAIN WILL ACCOMPANY THE STRONGER STORMS.

TWO LARGE OUTFLOW BOUNDARIES...ONE MOVING SWD THROUGH NRN MARICOPA
COUNTY AND ANOTHER MOVING NWD OUT OF EXTREME NRN PINAL COUNTY...ARE
IN THE PROCESS OF MERGING. ENHANCED CONVERGENCE ASSOCIATED WITH
THESE MERGERS IS RESULTING IN AN INCREASE IN STORMS OVER NERN
MARICOPA COUNTY. STORMS SHOULD SUBSEQUENTLY PROPAGATE SWWD INTO THE
MOIST AND UNSTABLE AIRMASS ACROSS SWRN AZ WHERE TEMPERATURES REMAIN
NEAR 100 AND SURFACE DEWPOINTS ARE IN THE 60S. FLOW ALONG THE SRN
PERIPHERY OF THE UPPER RIDGE IS RATHER WEAK ELY AT AROUND 10 KT AT 6
KM SUGGESTING STORMS WILL NOT MOVE PARTICULARLY FAST...ENHANCING THE
THREAT FOR LOCALLY VERY HEAVY RAINFALL.

..DIAL.. 07/26/2006

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

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

33741116 33331129 32461274 32691421 33711355 33621211 

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