562
FNUS86 KSGX 300844
FWLSGX
ECCDA DISCUSSIONS
NATIONAL WEATHER SERVICE SAN DIEGO CA
144 AM PDT WED SEP 30 2026
ECC033-010245-
ORANGE ECC DISPATCH-
DISCUSSION FOR ORANGE ECC DISPATCH
144 AM PDT WED SEP 30 2026
STRENGTHENING HIGH PRESSURE ALOFT WILL BRING A WARMING TREND WITH A
LONG-DURATION HEAT WAVE LIKELY FOR THIS WEEKEND THROUGH MUCH OF NEXT
WEEK INTO THE FOLLOWING WEEKEND. THERE COULD BE PERIODS OF GUSTY
EAST WINDS ALONG AND BELOW THE COASTAL SLOPES OF THE MOUNTAINS INTO
THE INLAND VALLEYS WITH GUSTS TO 20 TO 30 MPH ON FRIDAY, 30 TO
40 MPH ON SATURDAY, AND 25 TO 35 MPH ON SUNDAY WITH LOWEST DAYTIME
RELATIVE HUMIDITY FOR THE COASTAL SLOPES OF THE MOUNTAINS INTO THE
VALLEYS FALLING TO 15 TO 25 PERCENT WITH ELEVATED FIRE WEATHER
CONDITIONS. THERE COULD BE ADDITIONAL PERIODS OF MOSTLY WEAK
OFFSHORE FLOW NEXT WEEK, BUT WITH LOWER CONFIDENCE IN THE TIMING
AND OTHER DETAILS.
ECC035-010245-
MONTE VISTA ECC DISPATCH-
144 AM PDT WED SEP 30 2026
STRENGTHENING HIGH PRESSURE ALOFT WILL BRING A WARMING TREND WITH A
LONG-DURATION HEAT WAVE LIKELY FOR THIS WEEKEND THROUGH MUCH OF NEXT
WEEK INTO THE FOLLOWING WEEKEND. THERE COULD BE PERIODS OF GUSTY
EAST WINDS ALONG AND BELOW THE COASTAL SLOPES OF THE MOUNTAINS INTO
THE INLAND VALLEYS WITH GUSTS TO 20 TO 30 MPH ON FRIDAY, 30 TO
40 MPH ON SATURDAY, AND 25 TO 35 MPH ON SUNDAY WITH LOWEST DAYTIME
RELATIVE HUMIDITY FOR THE COASTAL SLOPES OF THE MOUNTAINS INTO THE
VALLEYS FALLING TO 15 TO 25 PERCENT WITH ELEVATED FIRE WEATHER
CONDITIONS. THERE COULD BE ADDITIONAL PERIODS OF MOSTLY WEAK
OFFSHORE FLOW NEXT WEEK, BUT WITH LOWER CONFIDENCE IN THE TIMING
AND OTHER DETAILS.
ECC034-010245-
RIVERSIDE ECC DISPATCH-
144 AM PDT WED SEP 30 2026
..DISCUSSION FROM LAXFWFSGX
STRENGTHENING HIGH PRESSURE ALOFT WILL BRING A WARMING TREND WITH A
LONG-DURATION HEAT WAVE LIKELY FOR THIS WEEKEND THROUGH MUCH OF NEXT
WEEK INTO THE FOLLOWING WEEKEND. THERE COULD BE PERIODS OF GUSTY
EAST WINDS ALONG AND BELOW THE COASTAL SLOPES OF THE MOUNTAINS INTO
THE INLAND VALLEYS WITH GUSTS TO 20 TO 30 MPH ON FRIDAY, 30 TO
40 MPH ON SATURDAY, AND 25 TO 35 MPH ON SUNDAY WITH LOWEST DAYTIME
RELATIVE HUMIDITY FOR THE COASTAL SLOPES OF THE MOUNTAINS INTO THE
VALLEYS FALLING TO 15 TO 25 PERCENT WITH ELEVATED FIRE WEATHER
CONDITIONS. THERE COULD BE ADDITIONAL PERIODS OF MOSTLY WEAK
OFFSHORE FLOW NEXT WEEK, BUT WITH LOWER CONFIDENCE IN THE TIMING
AND OTHER DETAILS.
..DISCUSSION FROM PHXFWFPSR
AFTER THE LAST COUPLE DAYS OF ABUNDANT WETTING RAINFALL, DRIER
CONDITIONS WILL RETURN TODAY AS A WEATHER SYSTEM DEPARTS THE
REGION. TEMPERATURES WILL REMAIN WELL BELOW NORMAL ACROSS
SOUTH-CENTRAL AZ AND NEAR NORMAL FOR AREAS ALONG AND WEST OF THE
COLORADO RIVER VALLEY. RELATIVE HUMIDITY WILL BOTTOM OUT AROUND
15-30% ACROSS THE WESTERN DISTRICTS AND REMAIN ABOVE 40% ACROSS THE
EASTERN DISTRICTS TODAY AND THURSDAY. GOOD TO EXCELLENT OVERNIGHT
RECOVERIES CAN BE EXPECTED THROUGH THE REMAINDER OF THIS WEEK. WINDS
WILL RETURN TO LIGHT AND DIURNAL PATTERNS WITH SPEEDS REMAINING
PREDOMINANTLY 10 MPH OR LESS.
..THUNDERSTORMS IMPLY GUSTY WINDS
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND IN
THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
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