The Latest NWS Regional Area Forecast Discussions
Enter the NWS Weather Forecast Office [WFO] Code Below
NWS Area Weather Forecast Discussion
County Warning Area [CWA]: STO
Regional NWS Weather Office: Sacramento, CA
County Warning Area [CWA]: STO
Regional NWS Weather Office: Sacramento, CA
000 FXUS66 KSTO 222354 AFDSTO AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SACRAMENTO CA 354 PM PST WED FEB 22 2012 .SHORT TERM DISCUSSION... AFTERNOON WARM UP ON TRACK SO FAR THIS AFTERNOON AFTER THE MORNING CLOUDS CLEARED OUT. DOWNTOWN SACRAMENTO IS CURRENTLY AT 72 DEGREES, REDDING IS AT 74, STOCKTON AT 71. THE HOT SPOT SO FAR IS RED BLUFF WHICH HAS WARMED UP TO 78 DEGREES PUTTING IT 15 DEGREES ABOVE NORMAL! WINDY CONDITIONS WILL DEVELOP TOMORROW AS SURFACE HIGH PRESSURE BEGINS TO STRENGTHEN EARLY THURSDAY MORNING. NORTHERLY PRESSURE GRADIENT FROM MEDFORD TO SACRAMENTO WILL BE STRONGEST FOR MOST OF THE DAY THURSDAY WHICH IS WHY THE WIND ADVISORY RUNS FROM 4 AM TO 6 PM. THE NAM MODEL IS SHOWING A MFR-SAC GRADIENT OF 10-15 MB DURING THAT TIME PERIOD WHILE THE GFS MODEL IS RANGING 9-12 MB. THUS, MODEL AGREEMENT IS PRETTY GOOD FOR WINDY CONDITIONS. NORTHERLY WINDS ARE EXPECTED TO BE STRONGEST ALONG THE WESTERN SIDE OF THE VALLEY. WENT AHEAD AND UPPED THE WINDS ALONG THE WESTERN VALLEY TO REFLECT THIS. SUSTAINED WINDS WILL PEAK BETWEEN 20 TO 30 MPH WITH GUSTS UP TO AROUND 40 MPH...AROUND 45 MPH FOR PORTIONS OF HIGHER TERRAIN ACROSS LAKE COUNTY. AS WINDS PICK UP DURING EARLY MORNING HOURS EXPECT OVERNIGHT LOWS TO BE WARMER THAN YESTERDAY DUE TO MIXING FROM THE WINDS. NO SIGNIFICANT CHANGES TO THE MID-RANGE FORECAST THIS WEEKEND. FRIDAY WILL BE A TRANSITION DAY AS A LOW PRESSURE TROUGH MOVES INTO THE PAC NW BY FRIDAY EVENING. THIS WILL WEAKEN THE HIGH PRESSURE SYSTEM OVER CALIFORNIA AND BRING A SLIGHT COOLING TREND ON FRIDAY. THE STORM WILL THEN DIG SOUTHWARD INTO OUR CWA ON SATURDAY WITH MUCH COOLER TEMPERATURES. VALLEY HIGHS WILL DROP DOWN TO NORMAL RANGING IN THE LOW 60S. THIS SYSTEM WILL BRING SOME LIGHT PRECIPITATION NORTH OF INTERSTATE 80 AND LOW SNOW LEVELS...DOWN INTO THE FOOTHILLS. NOT MUCH RAIN/SNOW EXPECTED THOUGH SINCE NOT A LOT OF MOISTURE IS ASSOCIATED WITH THIS STORM. JBB .EXTENDED DISCUSSION (SUNDAY THROUGH WEDNESDAY) SEVERAL TROUGHS BRUSH THROUGH NORTHERN CALIFORNIA SUNDAY INTO MID WEEK NEXT WEEK BRINGING NEAR TO SLIGHTLY BELOW NORMAL TEMPERATURES AND A THREAT OF PRECIPITATION...ESPECIALLY TO THE MOUNTAINS AND THE NORTHERN SACRAMENTO VALLEY. THE FORECAST LEANS TOWARDS THE WET ECMWF WITH BETTER RUN TO RUN CONSISTENCY. THERE IS STILL SOME UNCERTAINTY IN THE DETAILS WITH THE MODELS VARYING WITH THE TIMING AND TRACK OF THESE WAVES. ALTHOUGH NO SIGNIFICANT PRECIPITATION IS EXPECTED THROUGH THE END OF FEBRUARY. && .AVIATION... VFR CONDITIONS ARE EXPECTED OVER THE NEXT 24 HOURS AS A RIDGE OF HIGH PRESSURE RESIDES ALONG THE WEST COAST. NORTHERLY WINDS WILL INCREASE TOMORROW IN THE CENTRAL VALLEY AS PRESSURE GRADIENTS TIGHTEN. WINDS WILL INCREASE LATE IN THE MORNING TO 15-25 KTS WITH GUSTS UP TO 35KTS...WITH THE STRONGEST WINDS IN THE WESTERN VALLEY. -DVC && .STO WATCHES/WARNINGS/ADVISORIES... WIND ADVISORY FROM 4 AM TO 6 PM PST THURSDAY CARQUINEZ STRAIT AND DELTA...CENTRAL SACRAMENTO VALLEY...CLEAR LAKE/SOUTHERN LAKE COUNTY...MOUNTAINS SOUTHWESTERN SHASTA COUNTY TO NORTHERN LAKE COUNTY...NORTHERN SACRAMENTO VALLEY...NORTHERN SAN JOAQUIN VALLEY...SOUTHERN SACRAMENTO VALLEY. && $$
Tonights Low Temperature Forecast
| Forecast Discussion from: NOAA-NWS | Script developed by: El Dorado Weather |