000 FNUS56 KHNX 201633 HANFORD FIRE WEATHER OFFICE...MORNING FORECAST NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA 930 PDT Sunday Aug 20, 2000 DISCUSSION... ***DRY WEATHER TO CONTINUE THROUGH TUESDAY*** A BROAD TROUGH IS DEVELOPING OVER THE EASTERN PACIFIC...KEEPING AN ONSHORE FLOW OVER THE REGION. THE MARINE LAYER WILL DEEPEN AGAIN TONIGHT AS THE TROUGH INTENSIFIES. THIS WILL BRING MORE COOLING TO THE DISTRICT AND KEEP A DRY SOUTHWEST TO WEST FLOW ALOFT THROUGH MONDAY. THE WINDS ALOFT WILL BECOME SOUTHERLY TUESDAY AS A CUT-OFF LOW FORMS OFF THE CALIFORNIA COAST. THE RETURN OF THE MONSOONAL FLOW ALOFT WILL BRING A SLIGHT CHANCE OF THUNDERSTORMS STARTING WEDNESDAY AND THURSDAY OVER THE HIGHER TERRAIN OF THE SIERRA NEVADA AND TEHACHAPI MOUNTAINS. ------------------------------------------------------------------------ AREA 1 : *** COAST *** ZONES 500,520-525 ------------------------------------------------------------------------ ...TODAY...... SKY/WEATHER...AREAS OF MORNING LOW CLOUDS AND FOG ALONG THE COAST AND LOCALLY INTO THE VALLEYS...OTHERWISE SUNNY. MARINE LAYER..1500 TO 2000 FEET. TEMPERATURE... HIGHS - COAST: 65-75 INLAND VALLEYS: 78-93 HUMIDITY...... MINIMUM - COAST: 40-60% INLAND VALLEYS: 15-35% WIND - 20 FT..VARIABLE TO 10 MPH...BECOMING WEST TO NORTHWEST 15 TO 25 MPH BY THE AFTERNOON. ALONG THE COAST...AFTERNOON SEABREEZE 10 TO 20 MPH. RIDGE WINDS...WEST TO SOUTHWEST 10 TO 20 MPH. LAL...........1 TRENDS: TEMPS: UP 2-5 RH: LTL CHG TO DOWN 5% ALONG THE COAST AND IN ADJACENT VALLEYS. DOWN 5 TO 10% ELSEWHERE. FM: LTL CHG ...TONIGHT... SKY/WEATHER...AREAS OF FOG AND LOW CLOUDS ALONG THE COAST SPREADING INLAND OVERNIGHT...OTHERWISE CLEAR. MARINE LAYER..1800 TO 2400 FEET. TEMPERATURE... LOWS - COAST: 49-58 INLAND VALLEYS: 43-55 HUMIDITY...... MAXIMUM - COAST: 90-100% INLAND VALLEYS: 40-60% WIND - 20 FT..WEST TO NORTHWEST 15 TO 25 MPH AND GUSTY BELOW THE PASSES AND CANYONS...DECREASING OVERNIGHT. EVENING SEABREEZE 10 TO 20 MPH. RIDGE WINDS...WEST TO SOUTHWEST 15 TO 25 MPH IN THE EVENING... DECREASING TO 10 TO 20 MPH OVERNIGHT. LAL...........1 ------------------------------------------------------------------------ AREA 2 : ** VALLEY/SIERRA FOOTHILLS BELOW 4000 FEET ** ZONES 526-530,568 ----------------------------------------------------------------------- ...TODAY...... SKY/WEATHER...SUNNY. TEMPERATURE... HIGHS - FOOTHILLS: 87-94 VALLEY FLOOR: 85-92 HUMIDITY...... MINIMUM - FOOTHILLS: 12-22% VALLEY FLOOR: 20-38% WIND - 20 FT..VARIABLE 2 TO 8 MPH...BECOMING WEST TO NORTHWEST 5 TO 15 MPH IN THE AFTERNOON. RIDGE WINDS...SOUTHWEST TO NORTHWEST 10 TO 20 MPH. LAL...........1 TRENDS: TEMPS: DOWN 1-3 RH: UP 2-12% FM: LTL CHG TO UP 2 ...TONIGHT... SKY/WEATHER...CLEAR. TEMPERATURE... LOWS - FOOTHILLS: 40-55 VALLEY FLOOR: 52-60 HUMIDITY...... MAXIMUM - FOOTHILLS: 30-50% VALLEY FLOOR: 45-65% WIND - 20 FT..WEST TO NORTHWEST 10 TO 20 MPH. WINDS BECOMING LIGHT DRAINAGE 5 TO 9 MPH IN SHELTERED FOOTHILL AREAS. RIDGE WINDS...WEST TO NORTHWEST 10 TO 20 MPH. LAL...........1 ------------------------------------------------------------------------ AREA 3 : ** SIERRA NEVADA ABOVE 4000 FEET ** ZONES 531-534,539,540,551 ------------------------------------------------------------------------ ...TODAY...... SKY/WEATHER...SUNNY. TEMPERATURE... HIGHS - 5000 FEET: 72-82 8000 FEET: 67-70 HUMIDITY...... MINIMUM - 5000 FEET: 10-20% 8000 FEET: 8-15% WIND - 20 FT..SOUTHWEST TO NORTHWEST 10 TO 20 MPH. RIDGE WINDS...SOUTHWEST TO WEST 15 TO 30 MPH. LAL...........1 TRENDS: TEMPS: LTL CHG TO DOWN 3 RH: LTL CHG TO UP 5% FM: LTL CHG TO UP 2 ...TONIGHT... SKY/WEATHER...CLEAR. TEMPERATURE... LOWS - 5000 FEET: 40-50 8000 FEET: 35-45 HUMIDITY...... MAXIMUM - 5000 FEET: 25-45% 8000 FEET: 25-40% WIND - 20 FT..SOUTHWEST TO NORTHWEST 10 TO 20 MPH. RIDGE WINDS...WEST TO SOUTHWEST 15 TO 25 MPH. LAL...........1 ------------------------------------------------------------------------ FORECAST FOR MONDAY........ ALONG THE COAST...AREAS OF NIGHT AND MORNING LOW CLOUDS AND FOG...CLEARING TO NEAR THE OCEAN AROUND NOON. INLAND...MOSTLY CLEAR. TEMPERATURES DOWN 2 TO 4 DEGREES ALONG THE COAST...AND UP 1 TO 3 DEGREES INLAND. HUMIDITIES UP 3 TO 5 PERCENT NEAR THE COAST WITH LITTLE CHANGE INLAND. 20-FOOT WINDS WEST TO NORTHWEST 5 TO 15 MPH...EXCEPT AN AFTERNOON SEA BREEZE 15 TO 25 MPH ALONG THE COAST. RIDGE WINDS SOUTHWEST TO WEST 10 TO 20 MPH. ------------------------------------------------------------------------ EXTENDED FORECAST FOR TUESDAY THROUGH THURSDAY........ AREAS OF NIGHT AND MORNING LOW CLOUDS AND FOG ALONG THE COAST THROUGH THE PERIOD. OTHERWISE MOSTLY CLEAR...EXCEPT PARTLY CLOUDY OVER THE SIERRA NEVADA AND THE TEHACHAPI MOUNTAINS EACH AFTERNOON. A SLIGHT CHANCE OF THUNDERSTORMS OVER THE HIGHER ELEVATIONS OF THE SIERRA NEVADA AND THE TEHACHAPI MOUNTAINS WEDNESDAY AND THURSDAY. A SLOW WARMING TREND ALONG THE COAST...OTHERWISE LITLE CHANGE IN TEMPERATURES. SLIGHT DECREASES IN HUMIDITIES ALONG THE COAST WITH LITTLE CHANGE OVER INLAND AREAS. HUMIDITIES WILL INCREASE AT HIGHER SIERRA ELEVATIONS AND OVER THE TEHACHAPI MOUNTAINS WEDNESDAY AND THURSDAY. 20-FOOT WINDS WEST TO NORTHWEST 5 TO 15 MPH WITH LOCAL AFTERNOON AND EVENING BREEZES 15 TO 25 MPH...DECREASING THURSDAY. RIDGE WINDS BECOMING SOUTH TO SOUTHWEST 10 TO 20 MPH. END SANGER N