282
FNUS85 KVEF 210958
FWLVEF
ECCDA DISCUSSIONS
NATIONAL WEATHER SERVICE LAS VEGAS NV
258 AM PDT THU MAY 21 2026
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## DISCUSSIONS FROM THE LATEST FWF BELOW ##
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..DISCUSSION FROM RNOFWFVEF
DRY CONDITIONS WITH SINGLE-DIGIT AFTERNOON RELATIVE HUMIDITIES WILL
CONTINUE THROUGH THE WEEKEND WITH PERIODS OF AFTERNOON BREEZES.
EXPECT OVERNIGHT RECOVERIES BETWEEN 15 AND 25 PERCENT FOR DESERT
VALLEYS AND GENERALLY ABOVE 30 PERCENT FOR HIGHER ELEVATIONS. GUSTY
SOUTHWEST WINDS RETURN TO THE REGION ON TUESDAY.
..DISCUSSION FROM LAXFWFSGX
LOWEST DAYTIME HUMIDITY AROUND 10 PERCENT FOR THE DESERTS TODAY
WILL SLOWLY RECOVER THROUGH THE WEEKEND AS ONSHORE FLOW STRENGTHENS.
THE MARINE LAYER WILL SLOWLY DEEPEN INTO THE WEEKEND FROM AROUND
1200 FEET THIS MORNING TO AROUND 2000 TO 2500 FEET FOR SATURDAY
THROUGH MONDAY. COOLING WILL SPREAD SLOWLY INLAND ACROSS COASTAL
AREAS INTO THE VALLEYS INTO THE WEEKEND, WITH GREATER COOLING AND
DEEPENING OF THE MARINE LAYER FOR MONDAY THROUGH WEDNESDAY OF NEXT
WEEK.
..DISCUSSION FROM PHXFWFPSR
TEMPERATURES WILL HOVER AROUND SEASONAL LEVELS THROUGH FRIDAY AS DRY
WEATHER CONTINUES. MINIMUM HUMIDITY VALUES WILL REACH A 5-15% RANGE
FOLLOWING POOR TO FAIR OVERNIGHT RECOVERY OF 15-40%. WINDS WILL
MAINTAIN A NOCTURNAL DRAINAGE/DIURNAL UPSLOPE COMPONENT WITH
OCCASIONAL AFTERNOON GUSTS UP TO 15-25 MPH.
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## AFTER REVIEWING THE FWF DISCUSSIONS (ABOVE) - COMPLETE ##
## THE DISCUSSION (BELOW) FOR THE ECCDA FORECAST ##
## WHEN DONE CLICK TRANSMIT, PRODUCT SENT AS KVEFFWLVEF ##
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ECC027-220400-
SAN BERNARDINO ECC DISPATCH-
DISCUSSION FOR SAN BERNARDINO ECC DISPATCH
258 AM PDT THU MAY 21 2026
DRY CONDITIONS WITH SINGLE-DIGIT AFTERNOON RELATIVE HUMIDITIES WILL
CONTINUE THROUGH THE WEEKEND WITH PERIODS OF AFTERNOON BREEZES.
EXPECT OVERNIGHT RECOVERIES BETWEEN 15 AND 25 PERCENT FOR DESERT
VALLEYS AND GENERALLY ABOVE 30 PERCENT FOR HIGHER ELEVATIONS. GUSTY
SOUTHWEST WINDS RETURN TO THE REGION ON TUESDAY.
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