230 
FXUS64 KSJT 060801
AFDSJT
  
AREA FORECAST DISCUSSION 
NATIONAL WEATHER SERVICE SAN ANGELO TX
301 AM CDT FRI AUG 6 1999

MODELS IN GENERAL AGREEMENT WITH OVERALL UPPER PATTERN FOR NEXT COUPLE OF 
DAYS. UPPER LOW ALONG THE PACIFIC COAST PROGGED TO DRIFT A BIT FARTHER SSE TO 
CA COAST LATE TODAY...THEN SLOWLY LIFT NNE INTO OREGON ON SATURDAY. 
DOWNSTREAM UPPER RIDGE PROGGED TO BUILD NORTHWARD INTO ROCKIES. RIDGE AXIS 
WILL EXTEND FROM FROM FRONT RANGE TO RIO GRANDE...THEN EAST ALONG GULF COAST 
INTO EXTREME NORTHERN FL ON SATURDAY. THE ETA LOOKS SUSPICIOUS WITH THE 
SUDDEN GENERATION OF A VORTICITY MAXIMUM OVER OUR CWFA IN FIRST 12 HOURS AND 
THEN TAKING THE FEATURE EASTWARD. THE OTHER MODELS DON/T SHOW THIS. SURFACE 
LOW PRESSURE TROUGH FORECAST TO BECOME A LITTLE BETTER DEFINED AS IT MAKES 
VERY SLOW EASTWARD PROGRESS ACROSS WEST TX. FOR OUR CWFA THE PATTERN WILL 
RESULT IN DRY WEATHER AND HOTTER TEMPERATURES INTO THE WEEKEND. 

LOW LEVEL MOISTURE TO BE DRIER NEXT COUPLE OF DAYS AND WOULD NOT EXPECT TO 
SEE MORE THAN FEW TO SCATTTERED CUMULUS DEVELOPMENT AT BEST. WITH HIGHER 
LEVEL FLOW FORECAST TO BECOME MORE WESTERLY...SHOULD SEE SOME CIRRUS FROM 
CONVECTION ALONG TX/NM BORDER TO STREAM EAST INTO CWFA AT TIMES. WILL GO WITH 
MOSTLY CLEAR WORDING FOR ZONES. WARMING MID LEVEL TEMPS SHOULD SUPPRESS ANY 
SHOWER OR THUNDERSTORM DEVELOPMENT. BASED ON THICKNESSES AND 850 MILLIBAR 
TEMPS...WILL GRADUALLY TREND HIGH AND LOW TEMPS UPWARD...USING A BLEND 
BETWEEN FWC AND FAN GUIDANCE. EXPECT HOTTEST DAYTIME HIGHS WILL SHIFT INTO 
NORTHERN COUNTIES OVER THE WEEKEND. 

ABI 097/075/100/075 0000
SJT 098/073/100/073 0000
JCT 098/071/099/071 0000

.SJT...NONE.

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