940
FXUS65 KVEF 201917
AFDVEF
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
1220 PM PDT WED MAY 20 2026
KEY MESSAGES
* WARMING TREND CONTINUES THROUGH MEMORIAL DAY WEEKEND, WITH
AFTERNOON HIGHS CLIMBING TO 6 TO 8 DEGREES ABOVE-NORMAL.
DISCUSSION
TODAY THROUGH WEDNESDAY.
THE DESERT SOUTHWEST WILL REMAIN UNDER A WEAK BAGGY TROUGH THROUGH
THE END OF THE WEEK. THERE WILL BE ENOUGH OF A SURFACE PRESSURE
GRADIENT TO KEEP SOME BREEZY NORTH WINDS THROUGH THIS AFTERNOON, BUT
THOSE GRADIENTS ARE EXPECTED TO WEAKEN BY THURSDAY BRINGING MUCH
LIGHTER WINDS TO THE REGION. TEMPERATURES WILL RISE THROUGH THE
WEEKEND WITH READINGS EXPECTED TO BE AROUND 6 TO 8 DEGREES ABOVE
NORMAL BY SUNDAY AND MONDAY. HEATRISK WILL PEAK SATURDAY THROUGH
MONDAY, WITH WIDESPREAD MINOR (LEVEL 1 ON A SCALE OF 0 TO 4), AND
POCKETS OF MODERATE (LEVEL 2) IN THE LOWER DESERT VALLEYS SUCH AS
DEATH VALLEY, MOAPA VALLEY, AND THE COLORADO RIVER VALLEY. INCREASED
OUTDOOR ACTIVITY CAN BE EXPECTED WITH THE HOLIDAY WEEKEND, SO PEOPLE
ARE ENCOURAGED TO BRING ALONG WITH THEM PLENTY OF WATER, SUNSCREEN,
AND TAKE FREQUENT BREAKS IN THE SHADE AND/OR AIR CONDITIONING.
MODEL CLUSTERS CONTINUE TO INDICATE A PATTERN SHIFT TOWARD THE
MIDDLE OF NEXT WEEK WITH A POSSIBLE RETURN TO COOLER TEMPERATURES
AND GUSTY WINDS.
AVIATION...FOR HARRY REID...FOR THE 18Z FORECAST PACKAGE
NORTHEAST WIND UNDER 10 KTS BECOMING SOUTHEAST BY MID AFTERNOON.
WINDS WILL SHIFT TO THE TYPICAL SOUTHWEST DIRECTION AFTER SUNSET.
EAST WINDS WILL DEVELOP MID MORNING AND BECOME MORE SOUTHEASTERLY
DURING THE AFTERNOON. VFR CONDITIONS CAN BE EXPECTED THROUGH THE
PERIOD, WITH A FEW SCATTERED HIGH CLOUDS WITH BASES AOA 15KFT AGL
MOVING IN AFTER 00Z THURSDAY.
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST
CALIFORNIA...FOR THE 18Z FORECAST PACKAGE...GUSTY NORTHERLY WINDS
WILL CONTINUE IN THE COLORADO RIVER VALLEY AGAIN TODAY, WITH GUSTS
OF 20 TO 25 KNOTS EXPECTED AT KIFP AND KEED. ELSEWHERE, WINDS WILL
GENERALLY REMAIN UNDER 10 KNOTS THROUGH THURSDAY AND WINDS WILL BE
MUCH LIGHTER DOWN THE COLORADO RIVER VALLEY ON THURSDAY. VFR
CONDITIONS WILL PREVAIL AREAWIDE, WITH A FEW SCATTERED HIGH CLOUDS
WITH BASES AOA 15KFT AGL MOVING FROM NORTH TO SOUTH ACROSS THE
REGION LATE THIS AFTERNOON THROUGH THURSDAY MORNING.
SPOTTER INFORMATION STATEMENT
SPOTTERS ARE ENCOURAGED TO REPORT
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING
PROCEDURES.
DISCUSSION...GORELOW
AVIATION...CZYZYK
FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:
HTTPS://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER
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