NWS Forecast Discussion
000 FXUS66 KSGX 121047 AFDSGX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN DIEGO CA 250 AM PST FRI MAR 12 2010 .SYNOPSIS... FAIR AND DRY WITH TEMPERATURES NEAR SEASONAL AVERAGES TODAY AS HIGH PRESSURE BEGINS TO WEAKEN. FOR SATURDAY...A TROUGH OF LOW PRESSURE MOVING THROUGH THE GREAT BASIN WILL BRING COOLING...SOME CLOUDS...AND A SLIGHT CHANCE OF LIGHT PRECIPITATION. WARMER AND DRY FOR SUNDAY. MUCH WARMER EARLY NEXT WEEK UNDER HIGH PRESSURE AND WEAK OFFSHORE FLOW. && .DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES... .SHORT TERM (TODAY THROUGH SUNDAY)... WEATHER FOR TODAY NOT TOO DIFFERENT FROM YESTERDAY WITH HIGH TEMPERATURES NEAR TO SLIGHTLY BELOW SEASONAL AVERAGES. HOWEVER...SOME HIGH CLOUDS WILL BEGIN TO SPREAD IN FROM THE NORTHWEST DURING THE AFTERNOON. FOR TONIGHT AND SATURDAY...ANOTHER COLD TROUGH OF LOW PRESSURE WILL MOVE SOUTHEASTWARD THROUGH THE GREAT BASIN...INTO ARIZONA SUNDAY. THIS WILL BRING COOLER AND BREEZY CONDITIONS TONIGHT AND SATURDAY WITH A SLIGHT CHANCE OF LIGHT PRECIPITATION ALONG AND WEST OF THE MOUNTAINS LATE TONIGHT AND EARLY SATURDAY. FOR SUNDAY...HIGH PRESSURE WILL BRING WARMING TO NEAR TO SLIGHTLY ABOVE SEASONAL AVERAGES. && .LONG TERM (MONDAY THROUGH THURSDAY)... STRONG HIGH PRESSURE ALONG THE WEST COAST AND WEAK OFFSHORE FLOW WILL BRING WARMING TO WELL ABOVE SEASONAL AVERAGES FOR MONDAY AND TUESDAY WITH WARMEST TEMPERATURES WEST OF THE MOUNTAINS IN THE LOWER TO MID 80S. A COOLING TREND WILL FOLLOW FOR WEDNESDAY INTO THE WEEKEND AS HIGH PRESSURE SLOWLY WEAKENS WEDNESDAY AND THURSDAY...THEN ANOTHER COLD TROUGH OF LOW PRESSURE MOVES SOUTHEASTWARD THROUGH THE GREAT BASIN FRIDAY AND SATURDAY. && .AVIATION... 121000Z...CLEAR THROUGH FRIDAY WITH UNRESTRICTED VISIBILITY. SOME MID AND HIGH CLOUDS POSSIBLE FRIDAY EVENING THROUGH THE NIGHT. MARINE LAYER EXPECTED TO INCREASE FRIDAY NIGHT WITH STRATUS AND FOG POSSIBLE THROUGH SATURDAY MORNING. EXPECT BASES AROUND 1000 FEET MSL AFFECTING COASTAL TAF SITES FRI NIGHT WITH AREAS 3-5SM IN FOG. CIGS INCREASE TO NEAR 2000 FEET SAT MORNING WITH HIGHER TERRAIN OBSCURED. LIGHT SHOWERS POSSIBLE SATURDAY MORNING IN THE COASTAL BASIN TO THE COASTAL SLOPES. PG. && .SGX WATCHES/WARNINGS/ADVISORIES... CA...NONE. PZ...NONE. && $$ PUBLIC...MARTIN AVIATION/MARINE...PG NWS ON THE WEB AT WEATHER.GOV/SANDIEGO
NWS SGX Office Area Forecast Discussion