664
FXUS65 KVEF 210504
AFDVEF
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
454 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 06Z FORECAST PACKAGE
LIGHT SOUTHWEST WINDS WILL PERSIST THROUGH MID MORNING AND THEN
FOLLOW TYPICAL DIURNAL PATTERNS THROUGH THE REST OF PERIOD. VFR
CONDITIONS CAN BE EXPECTED, 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 06Z FORECAST PACKAGE... 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 OCCASIONAL SCATTERED TO BROKEN HIGH
CLOUDS WITH BASES AOA 15KFT AGL THROUGH THE PERIOD.
SPOTTER INFORMATION STATEMENT
SPOTTERS ARE ENCOURAGED TO REPORT
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING
PROCEDURES.
DISCUSSION...GORELOW
AVIATION...BERC
FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:
HTTPS://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page