860
FXUS65 KVEF 211734
AFDVEF
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
1034 AM PDT THU MAY 21 2026
KEY MESSAGES
* WARMING TREND CONTINUES THROUGH MEMORIAL DAY WEEKEND BEFORE
GUSTY CONDITIONS RETURN ON TUESDAY.
DISCUSSION
TODAY THROUGH WEDNESDAY.
THE WARMING TREND CONTINUES FOR THE DESERT SOUTHWEST, WITH
TEMPERATURES CLIMBING TO 6 TO 8 DEGREES ABOVE SEASONAL NORMALS
SATURDAY THROUGH MONDAY. CORRESPONDINGLY, THERE IS WIDESPREAD MINOR
HEATRISK (LEVEL 1 ON A SCALE OF 0 TO 4) FOR MEMORIAL DAY WEEKEND,
WITH POCKETS OF MODERATE (LEVEL 2) IN THE LOWER DESERT VALLEYS SUCH
AS DEATH VALLEY, MOAPA VALLEY, AND THE COLORADO RIVER VALLEY. THOSE
PARTICIPATING IN OUTDOOR ACTIVITIES THIS HOLIDAY WEEKEND ARE
ENCOURAGED TO BRING PLENTY OF WATER, APPLY SUNSCREEN, AND TAKE
FREQUENT BREAKS IN THE SHADE AND/OR AIR CONDITIONING. AS THE WEEKEND
PROGRESSES, A CLOSED AREA OF LOW PRESSURE WILL PUSH INTO THE PACIFIC
NORTHWEST; THE ASSOCIATED TROUGH AXIS IS EXPECTED TO PUSH THROUGH
THE DESERT SOUTHWEST ON TUESDAY, RESULTING IN WIDESPREAD GUSTY
SOUTHWEST WINDS BETWEEN 30 AND 40 MPH ALONG WITH A DECREASE IN
TEMPERATURES. THERE REMAINS SOME UNCERTAINTY REGARDING THE TIMING
AND DEPTH OF THIS SYSTEM, SO FORECAST DETAILS WILL EVOLVE AS WE MOVE
THROUGH THE WEEK.
AVIATION...FOR HARRY REID...FOR THE 18Z FORECAST PACKAGE
LIGHT
WINDS FOLLOWING TYPICAL DIURNAL DIRECTIONAL TRENDS WILL PERSIST
THROUGH THE TAF PERIOD. SPEEDS WILL GENERALLY REMAIN 8 KNOTS OR
LESS, WITH LESS THAN 20 PERCENT CHANCE OF GUSTS TO 12 KNOTS FROM MID
AFTERNOON THROUGH EARLY EVENING. VFR CONDITIONS WILL PREVAIL INTO
FRIDAY.
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST
CALIFORNIA...FOR THE 18Z FORECAST PACKAGE...WINDS ACROSS THE REGION
WILL GENERALLY BE LIGHT AND FOLLOW TYPICAL DIURNAL DIRECTIONAL
TRENDS, WITH SPEEDS REMAINING BELOW 10 KNOTS THROUGH THIS AFTERNOON.
MOST AREAS WILL SEE A CONTINUATION OF THE LIGHT WINDS OVERNIGHT,
EXCEPT ACROSS THE WESTERN MOJAVE DESERT, WHERE WESTERLY WINDS TO
AROUND 20 KNOTS WILL DEVELOP. VFR CONDITIONS WILL CONTINUE THROUGH
TONIGHT.
SPOTTER INFORMATION STATEMENT
SPOTTERS ARE ENCOURAGED TO REPORT
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING
PROCEDURES.
DISCUSSION...SOULAT
AVIATION...PLANZ/BERC
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