FNUS86 KSGX 190921 FWLSGX ECCDA DISCUSSIONS NATIONAL WEATHER SERVICE SAN DIEGO CA 221 AM PDT TUE MAY 19 2026 ECC033-200330- ORANGE ECC DISPATCH- DISCUSSION FOR ORANGE ECC DISPATCH 221 AM PDT TUE MAY 19 2026 LOWEST DAYTIME HUMIDITY FOR THE DESERTS WILL REMAIN AROUND 10 PERCENT THROUGH THURSDAY WITH THE MOUNTAINS AND INLAND VALLEYS FALLING TO 10 TO 15 PERCENT TODAY WITH WEAK OFFSHORE FLOW. HIGH TEMPERATURES FOR INLAND AREAS WILL WARM AS MUCH AS 5 TO 10 DEGREES TODAY. SLOWER WARMING WILL CONTINUE FOR THE MOUNTAINS AND DESERTS FOR WEDNESDAY AND THURSDAY WHILE THE COAST AND VALLEYS BEGIN TO COOL. FOR FRIDAY THROUGH MONDAY, NOT MUCH CHANGE IN HIGH TEMPERATURES IS EXPECTED FOR THE MOUNTAINS AND DESERTS WHILE THE COAST AND VALLEYS COOL A FEW DEGREES. $$ ECC035-200330- MONTE VISTA ECC DISPATCH- 221 AM PDT TUE MAY 19 2026 LOWEST DAYTIME HUMIDITY FOR THE DESERTS WILL REMAIN AROUND 10 PERCENT THROUGH THURSDAY WITH THE MOUNTAINS AND INLAND VALLEYS FALLING TO 10 TO 15 PERCENT TODAY WITH WEAK OFFSHORE FLOW. HIGH TEMPERATURES FOR INLAND AREAS WILL WARM AS MUCH AS 5 TO 10 DEGREES TODAY. SLOWER WARMING WILL CONTINUE FOR THE MOUNTAINS AND DESERTS FOR WEDNESDAY AND THURSDAY WHILE THE COAST AND VALLEYS BEGIN TO COOL. FOR FRIDAY THROUGH MONDAY, NOT MUCH CHANGE IN HIGH TEMPERATURES IS EXPECTED FOR THE MOUNTAINS AND DESERTS WHILE THE COAST AND VALLEYS COOL A FEW DEGREES. $$ ECC034-200330- RIVERSIDE ECC DISPATCH- 221 AM PDT TUE MAY 19 2026 ...DISCUSSION FROM LAXFWFSGX... LOWEST DAYTIME HUMIDITY FOR THE DESERTS WILL REMAIN AROUND 10 PERCENT THROUGH THURSDAY WITH THE MOUNTAINS AND INLAND VALLEYS FALLING TO 10 TO 15 PERCENT TODAY WITH WEAK OFFSHORE FLOW. HIGH TEMPERATURES FOR INLAND AREAS WILL WARM AS MUCH AS 5 TO 10 DEGREES TODAY. SLOWER WARMING WILL CONTINUE FOR THE MOUNTAINS AND DESERTS FOR WEDNESDAY AND THURSDAY WHILE THE COAST AND VALLEYS BEGIN TO COOL. FOR FRIDAY THROUGH MONDAY, NOT MUCH CHANGE IN HIGH TEMPERATURES IS EXPECTED FOR THE MOUNTAINS AND DESERTS WHILE THE COAST AND VALLEYS COOL A FEW DEGREES. ...DISCUSSION FROM PHXFWFPSR... THERE WILL BE A SLOW DAY-TO-DAY WARMING OF TEMPERATURES, BUT OVERALL HIGH TEMPERATURES WILL REMAIN NEAR SEASONAL NORMALS AS THE NORMALS ALSO SLOWLY RISE. VERY DRY CONDITIONS WILL PERSIST THROUGH THE END OF THE WEEK WITH MINIMUM RH VALUES AROUND 5-15% EACH DAY. OVERNIGHT RECOVERIES WILL BE POOR TO FAIR, MOSTLY AROUND 20-45%. SEASONAL WIND PATTERNS ARE EXPECTED EACH DAY, WITH AFTERNOON UPSLOPE BREEZES UP TO 15-25 MPH. THERE WILL BE AN INCREASE IN HIGH CLOUDS ACROSS THE REGION AND THICKEST ACROSS SOUTH-CENTRAL AZ, WHICH SHOULD LIMIT MIXING HEIGHTS SOMEWHAT. MIXING HEIGHTS WILL BE HIGHER TOMORROW, ABOVE 10K FT, WITH THINNER CLOUDS AND LESS COVERAGE. NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR. $$