845
FXUS66 KSGX 140855
AFDSGX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
155 AM PDT TUE JUL 14 2026
SYNOPSIS
HIGH PRESSURE ALOFT AND SOME DRYING OF MID LEVEL MOISTURE WILL
BRING WARMING FOR TODAY AND WEDNESDAY WITH WIDESPREAD MODERATE TO
LOCALLY MAJOR HEATRISK THROUGH THURSDAY EXCEPT FOR THE HIGHER
ELEVATIONS OF THE MOUNTAINS. SOUTHEASTERLY FLOW ALOFT WILL BRING A
RETURN OF GREATER MONSOONAL MOISTURE FOR THURSDAY INTO THE WEEKEND
ALONG WITH A CHANCE OF MAINLY AFTERNOON AND EARLY EVENING SHOWERS
AND THUNDERSTORMS, MOSTLY FOR THE MOUNTAINS AND DESERTS. HIGH
TEMPERATURES WILL COOL TO AROUND AVERAGE FOR THE WEEKEND.
DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
SHORT TERM (TODAY THROUGH THURSDAY)
HIGH PRESSURE WILL BRING WARMING THROUGH WEDNESDAY, THOUGH WITH
MID LEVEL FLOW BECOMING SOUTHERLY WITH SOME DRYING OF MID LEVEL
MOISTURE. HIGH TEMPERATURES WILL WARM 5 TO 10 DEGREES FOR INLAND
AREAS TODAY AND ANOTHER 5 DEGREES ON WEDNESDAY WITH LOW
TEMPERATURES WARMING A FEW DEGREES.
HIGH TEMPERATURES ON WEDNESDAY WILL BE MOSTLY 5 TO 10 DEGREES
ABOVE AVERAGE. LOW TEMPERATURES ON WEDNESDAY WILL BE AROUND 5
DEGREES ABOVE AVERAGE, TO 10 TO 15 DEGREES ABOVE AVERAGE ON THE
LOWER SLOPES OF THE MOUNTAINS. HIGH TEMPERATURES ON WEDNESDAY WILL
RANGE FROM THE MID 70S TO NEAR 80 AT THE COAST TO THE UPPER 90S
TO 108 FOR THE INLAND EMPIRE WITH 112 TO 116 FOR THE LOWER
DESERTS.
THE WARM NIGHTS WILL CONTRIBUTE MORE TO THE HIGHER HEATRISK FOR
THE NEXT FEW DAYS. THE EXTREME HEAT WARNING HAS BEEN EXPANDED TO
THE LOWER DESERTS FOR TODAY THROUGH THURSDAY. THE EXTREME HEAT
WARNING REMAINS FOR THE MOUNTAINS AND VALLEYS FOR WEDNESDAY AND
THURSDAY WITH A HEAT ADVISORY FOR COASTAL AREAS ON THOSE DAYS.
AFTER DRYING FOR TODAY AND WEDNESDAY, PRECIPITABLE WATER VALUES
WILL BEGIN INCREASING AGAIN ON THURSDAY WITH THE HIGHER VALUES
FOR FRIDAY THROUGH NEXT WEEKEND NOT TOO DIFFERENT FROM THIS PAST
WEEKEND.
THE DAYTIME HEAT WILL BE MOSTLY NOT RECORD SETTING. HOWEVER,
THERE COULD BE A FEW RECORDS TIED OR BROKEN IN THE MOUNTAINS FOR
RECORD WARM LOW TEMPERATURES.
LONG TERM (FRIDAY THROUGH MONDAY)
HIGH PRESSURE ALOFT WILL REMAIN ACROSS THE AREA WITH MONSOONAL
MOISTURE IN SOUTHEAST FLOW ALOFT BRINGING A CHANCE OF AFTERNOON
AND EARLY EVENING SHOWERS AND THUNDERSTORMS, MAINLY FOR THE
MOUNTAINS AND DESERTS. HIGH TEMPERATURES WILL COOL AROUND 5
DEGREES FOR FRIDAY AND AGAIN ON SATURDAY, THEN REMAIN AROUND
AVERAGE FOR SUNDAY AND MONDAY.
AVIATION
140530Z....COAST/VALLEYS...LOW CLOUDS BASED 1000-1400 FT MSL HAVE
DEVELOPED OVER COASTAL SAN DIEGO COUNTY THIS EVENING. STARTING AFTER
09Z, CLOUDS WILL SLOWLY EXPAND INTO ORANGE COUNTY AND UP TO 10-15
MILES INLAND. LOW CLOUDS SCATTER BACK TO THE COASTLINE 15-17Z. VFR
CONDITIONS EXPECTED TUESDAY AFTERNOON AND EVENING.
MOUNTAINS/DESERTS...ISO SHRA ALONG WITH CU BASED NEAR 10 KFT OVER
MOUNTAIN RIDGES 19Z TUE TO 00Z WED. OTHERWISE, FEW-SCT HIGH CLOUDS
AOA 15 KFT.
MARINE
NO HAZARDOUS MARINE CONDITIONS ARE EXPECTED THROUGH SATURDAY.
BEACHES
ASTRONOMICAL HIGH TIDES PEAKING 7.0-7.5 FT EACH DAY THROUGH
WEDNESDAY. HIGH TIDES COMBINE WITH A MODEST SOUTH SWELL (2 FT SWELL
AT 13-15 SECONDS FROM 190 DEGREES) TO GENERATE SURF OF 3-5 FT FOR
SOUTH-FACING BEACHES AND 2-4 FT ELSEWHERE. THIS WILL PRODUCE AREAS
OF COASTAL FLOODING IN LOW LYING AREAS, BOARDWALKS, BEACH PARKING
LOTS, AND BEACH ADJACENT STREETS DURING EVENING HIGH TIDES. HIGHEST
TIDES EACH EVENING WILL GENERALLY OCCUR BETWEEN 8 AND 10 PM. A BEACH
HAZARDS STATEMENT REMAINS IN EFFECT THROUGH TUESDAY EVENING AND
CONTAINS FURTHER DETAILS. THERE WILL BE AN INCREASED RISK OF RIP
CURRENTS THROUGH WEDNESDAY.
SKYWARN
SKYWARN ACTIVATION IS NOT REQUESTED. HOWEVER WEATHER SPOTTERS ARE
ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS.
SGX WATCHES/WARNINGS/ADVISORIES
CA...BEACH HAZARDS STATEMENT THROUGH THIS EVENING FOR ORANGE COUNTY
COASTAL AREAS-SAN DIEGO COUNTY COASTAL AREAS.
HEAT ADVISORY FROM 10 AM WEDNESDAY TO 8 PM PDT THURSDAY FOR
ORANGE COUNTY COASTAL AREAS-SAN DIEGO COUNTY COASTAL AREAS.
EXTREME HEAT WARNING FROM 10 AM WEDNESDAY TO 8 PM PDT THURSDAY
FOR ORANGE COUNTY INLAND AREAS-RIVERSIDE COUNTY MOUNTAINS-
SAN BERNARDINO COUNTY MOUNTAINS-SAN BERNARDINO AND
RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE-SAN DIEGO COUNTY
MOUNTAINS-SAN DIEGO COUNTY VALLEYS-SAN GORGONIO PASS NEAR
BANNING-SANTA ANA MOUNTAINS AND FOOTHILLS.
EXTREME HEAT WARNING FROM 10 AM THIS MORNING TO 8 PM PDT
THURSDAY FOR COACHELLA VALLEY-SAN DIEGO COUNTY DESERTS.
PZ...NONE.
PUBLIC...17
AVIATION/MARINE/BEACHES...KW
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