010
FXUS66 KSGX 261730
AFDSGX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
930 AM PST THU FEB 26 2026
SYNOPSIS
HIGH PRESSURE ALOFT AND WEAK OFFSHORE LOWER-LEVEL FLOW WILL BRING
WARMING THROUGH FRIDAY WITH WIDESPREAD RECORD HEAT FOR FRIDAY AND
SATURDAY. WEAK ONSHORE FLOW WILL RETURN NEAR THE COAST ON
SATURDAY AND STRENGTHEN INTO EARLY NEXT WEEK. THIS WILL BEGIN TO
SPREAD COOLING INLAND ON SATURDAY. THERE WILL BE GREATER COOLING
FOR SUNDAY AND MONDAY WITH STRONGER AND GUSTY SOUTHWEST TO WEST
WINDS FOR THE MOUNTAINS AND DESERTS. HIGH TEMPERATURES ON MONDAY
WILL BE AROUND 5 DEGREES ABOVE AVERAGE.
DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
..NEW AVIATION DISCUSSION FOR THE 18Z TAF PACKAGE
STRENGTHENING HIGH PRESSURE ALOFT AND WEAK OFFSHORE LOWER-LEVEL
FLOW WILL BRING WARMING THROUGH FRIDAY. HIGH TEMPERATURES FOR MOST
AREAS EXCEPT FOR THE LOWER DESERTS WILL WARM 5 TO 8 DEGREES TODAY
WITH ADDITIONAL WARMING ON FRIDAY RANGING FROM A FEW DEGREES FOR
THE DESERTS TO 5 TO 10 DEGREES FOR COASTAL AREAS.
HIGH TEMPERATURES ON FRIDAY WILL BE AS MUCH AS 20 TO 25 DEGREES
ABOVE AVERAGE. HIGH TEMPERATURES ON FRIDAY WILL RANGE FROM AROUND
80 NEAR THE COAST TO UPPER 80S TO MID 90S FOR THE VALLEYS AND
INLAND ORANGE COUNTY WITH THE MID TO UPPER 90S FOR THE LOWER
DESERTS. MOST AREAS ON FRIDAY WILL HAVE EITHER RECORD OR NEAR-
RECORD HIGH TEMPERATURES.
WEAK ONSHORE FLOW WILL RETURN ON SATURDAY WITH COOLING OF HIGH
TEMPERATURES OF A FEW TO AROUND 5 DEGREES FOR THE COAST, VALLEYS,
AND COASTAL SLOPES OF THE MOUNTAINS. RECORD OR NEAR-RECORD HEAT
WILL CONTINUE FOR THE MOUNTAINS, DESERTS, AND PORTIONS OF THE
VALLEYS. MANY RECORD OR NEAR-RECORD WARM OVERNIGHT TEMPERATURES
WILL CONTINUE THROUGH SATURDAY NIGHT AS WELL.
LONG TERM (SUNDAY THROUGH WEDNESDAY)
A LOW PRESSURE SYSTEM MOVING INLAND THROUGH CALIFORNIA WILL BRING
STRONGER ONSHORE FLOW FOR SOUTHERN CALIFORNIA WITH GREATER COOLING
SPREADING INLAND FOR SUNDAY AND MONDAY. MONDAY HIGH TEMPERATURES
WILL BE AROUND 5 DEGREES ABOVE AVERAGE RANGING FROM THE MID TO
UPPER 60S NEAR THE COAST TO THE 70S FOR THE VALLEYS WITH THE MID
80S TO AROUND 90 FOR THE LOWER DESERTS.
WARMING OF HIGH TEMPERATURES BY A FEW DEGREES WILL SPREAD INLAND
FOR NEXT TUESDAY AND WEDNESDAY WITH WEDNESDAY HIGH TEMPERATURES
MOSTLY 5 TO 10 DEGREES ABOVE AVERAGE.
AVIATION
261725Z...COAST...FEW-SCT HIGH CLOUDS AOA 20K FT MSL THROUGH THIS
AFTERNOON. FOG WITH BKN CIGS 200-400 MSL CONTINUES TO LOOK LESS
LIKELY (10-20%) TO IMPACT COASTAL AIRPORTS AFTER 08Z-15Z FRIDAY.
OTHERWISE...MOSTLY CLEAR AND VFR CONDITIONS TODAY INTO FRIDAY.
MARINE
NO HAZARDOUS MARINE CONDITIONS ARE EXPECTED THROUGH MONDAY.
SKYWARN
SKYWARN ACTIVATION IS NOT REQUESTED. HOWEVER WEATHER SPOTTERS ARE
ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS.
SGX WATCHES/WARNINGS/ADVISORIES
CA...NONE.
PZ...NONE.
PUBLIC...17
AVIATION/MARINE...APR
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