375
FNUS86 KSGX 301956
FWLSGX
ECCDA DISCUSSIONS
NATIONAL WEATHER SERVICE SAN DIEGO CA
1256 PM PDT WED SEP 30 2026
ECC033-011400-
ORANGE ECC DISPATCH-
DISCUSSION FOR ORANGE ECC DISPATCH
1256 PM 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.
ECC035-011400-
MONTE VISTA ECC DISPATCH-
1256 PM 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.
ECC034-011400-
RIVERSIDE ECC DISPATCH-
1256 PM 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
ASIDE FROM A FEW AFTERNOON SHOWERS ACROSS THE FAR EASTERN DISTRICTS,
DRY CONDITIONS WILL PREVAIL DURING THE NEXT SEVERAL DAYS.
TEMPERATURES WILL REMAIN WELL BELOW NORMAL ACROSS SOUTH-CENTRAL AZ
AND NEAR NORMAL FOR AREAS ALONG AND WEST OF THE COLORADO RIVER
VALLEY TODAY WITH A GRADUAL WARMING TREND THROUGH THE END OF THE
WEEK. AFTERNOON RELATIVE HUMIDITIES WILL BOTTOM OUT AROUND 15-30%
ACROSS THE WESTERN DISTRICTS AND REMAIN ABOVE 40% ACROSS THE EASTERN
DISTRICTS THROUGH THE END OF THE WEEK ALONG WITH GOOD TO EXCELLENT
OVERNIGHT RECOVERIES. WINDS THROUGH THURSDAY WILL BE LIGHT AND
DIURNAL WITH SPEEDS REMAINING PREDOMINANTLY 10 MPH OR LESS BEFORE
INCREASING OUT OF THE EAST BY FRIDAY.
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND IN
THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.
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