
http://www.wrh.noaa.gov/fgz
THE MAIN LOW WILL BEGIN TO LIFT NORTHEAST FRIDAY NIGHT...AS IS DOES MODERATE OROGRAPHIC FLOW ALONG WITH WEAK SYNOPTIC LIFT WILL COMBINED TO CREATE ENOUGH FORCING THAT RAINFALL RATES WILL INCREASE WITH THE THREAT OF MODERATE TO HEAVY RAIN...ESPECIALLY ALONG THE UPSLOPE AREAS OF YAVAPAI AND NORTHERN GILA COUNTY MOUNTAINS AND OAK CREEK AND SYCAMORE CANYONS. THE OROGRAPHIC FLOW WILL WEAKEN QUICKLY ON SATURDAY AS THE UPPER LOW MOVES ACROSS THE AREA. THERE STILL WILL BE ENOUGH SYNOPTIC LIFT COMBINED WITH STEEPER LAPSE RATES THAT LOCALLY HEAVY RAIN WILL STILL BE POSSIBLE IN THE MORNING ON SATURDAY. PRECIPITATION SHOULD END QUICKLY EARLY SUNDAY. A FLAT RIDGE WILL DEVELOP OVER THE AREA EARLY NEXT WEEK. ECMWF AND THE GFS INDICATE ANOTHER TROUGH DEVELOPING OFF THE WEST COAST ALONG CALIFORNIA. THIS SYSTEM WILL SEND WEAK DISTURBANCES INTO THE CENTRAL ROCKIES DURING THE WEEK. EXTREME NORTHERN ARIZONA MAY SEE A FEW SHOWERS AS THESE SYSTEM MOVE ACROSS UTAH...THE TIMING OF THESE WEAK DISTURBANCE WILL BE DIFFICULT TO FORECAST. BY THURSDAY INTO FRIDAY...A STRONG COLD FRONT WILL MOVE INLAND ACROSS CALIFORNIA AND NEVADA. SUBTROPICAL MOISTURE BY THIS TIME IS PROJECTED TO WRAP NORTHWARD A HEAD OF THE FRONTAL BAND. THIS COULD POTENTIALLY GIVE US MORE PRECIPITATION ACROSS NORTHERN ARIZONA.
Dennis
