The posts in this forum are NOT official forecast and should not be used as such. They are just the opinion of the poster and may or may not be backed by sound meteorological data. They are NOT endorsed by any professional institution or 
http://www.wrh.noaa.gov/fgz
WEDNESDAY THROUGH THURSDAY...THE UPPER LOW IS FCST TO SIT SOUTH OF AZ ON WEDNESDAY AND THEN MOVE SLOWLY NORTHEASTWARD ON THURSDAY. BOOTH THE NAM AND GFS MODELS WANT TO MOVE SOME MOISTURE BACK INTO THE WHITES...ALTHOUGH THE NAM IS FASTER WITH THIS. WE WILL KEEP THE SLIGHT CHANCE OF SHOWERS IN THE WHITES WEDS. NIGHT AND THURSDAY. ELSEWHERE IT`S DRY. ON FRIDAY...THE MODEL CONSENSUS IS FOR ANOTHER DRY DAY ACROSS THE STATE WITH A WEAK RIDGE OVERHEAD.
SATURDAY AND SUNDAY...THE OPERATIONAL MODELS AGREEMENT FOR THIS PERIOD COULD BE BETTER. THE MAIN FEATURES CONSISTENT IN THE GFS AND EC ARE WESTERLY FLOW ALOFT OVER AZ EARLY SATURDAY WITH A LOW PRESSURE CELL SOMEWHERE OVER NRN CALIFORNIA. THERE IS SOME SIGN OF A COLD FRONTAL PASSAGE ON SUNDAY AND WE HAVE INTRODUCED A SLIGHT CHANCE OF PRECIP TO THE NORTHERN THIRD OF THE STATE FOR SATURDAY NIGHT AND SUNDAY.