947
FXUS65 KVEF 212348
AFDVEF
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
448 PM PDT THU MAY 21 2026
KEY MESSAGES
* WARMING TREND CONTINUES THROUGH MEMORIAL DAY WEEKEND BEFORE
GUSTY CONDITIONS RETURN ON TUESDAY.
* SMOKE FROM CALIFORNIA WILDFIRES MAY BE SEEN ACROSS THE MOJAVE
DESERT
DISCUSSION
TODAY THROUGH THURSDAY.
INCREASING TEMPERATURES CONTINUE INTO MEMORIAL DAY WEEKEND WITH 6
TO 8 DEGREES ABOVE CLIMATOLOGICAL NORMAL AREAWIDE. 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. THROUGH THE WEEKEND, A LOW PRESSURE SYSTEM
WILL BE MOVING ASHORE IN THE PACIFIC NORTHWEST WHERE THE LOW WILL
CUT OFF FROM THE MEAN UPPER FLOW AND DIG SOUTHWARD INTO THE DESERT
SOUTHWEST. THIS WILL BRING WINDIER CONDITIONS TO THE AREA, LIKELY
ON TUESDAY INTO EARLY WEDNESDAY, BUT THERE IS STILL SOME
UNCERTAINTY IN THE TIMING AND STRENGTH OF THIS SYSTEM, SO STAY
TUNED AS WE MOVE THROUGH THE HOLIDAY WEEKEND.
AVIATION...FOR HARRY REID...FOR THE 00Z FORECAST PACKAGE
WINDS
WILL REMAIN AROUND 8KT OR LESS THROUGH EARLY FRIDAY AFTERNOON,
FOLLOWING TYPICAL DAILY DIRECTIONAL PATTERNS. WINDS WILL INCREASE
TO AROUND 10KT FRIDAY AFTERNOON THROUGH FRIDAY EVENING, VEERING TO
THE SOUTHEAST AND THEN THE SOUTH AFTER SUNSET. THERE IS A VERY
LOW CHANCE OF INTERMITTENT HIGHER GUSTS TO AROUND 15KT DURING THE
MID- TO LATE AFTERNOON. VFR CONDITIONS WILL CONTINUE WITH
INCREASING MID-LEVEL AND HIGH CLOUDS LATE TONIGHT ONWARD, WITH
BASES AT OR ABOVE 15KFT.
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST
CALIFORNIA...FOR THE 00Z FORECAST PACKAGE...WINDS ACROSS MUCH OF THE
REGION WILL GENERALLY FOLLOW TYPICAL DAILY DIRECTIONAL PATTERNS
THE NEXT 24 HOURS, WITH SPEEDS AROUND 5-10KT. ONE EXCEPTION WILL
BE ACROSS THE WESTERN MOJAVE DESERT, INCLUDING KDAG, WHERE GUSTY
WESTERLY WINDS TO 18-20KT WILL DEVELOP LATE THIS EVENING THROUGH
EARLY FRIDAY MORNING. ADDITIONALLY, ALONG THE LOWER COLORADO RIVER
VALLEY FROM KEED TO KIFP, TERRAIN-ENHANCED SOUTHERLY WINDS ARE
EXPECTED TO DEVELOP MID-MORNING ONWARD, WITH SUSTAINED SPEEDS
10-15KT WITH GUSTS TO 20-25KT. OTHERWISE, VFR CONDITIONS PREVAIL
WITH INCREASING CLOUDS WITH BASES AT OR ABOVE 12-15KFT.
SPOTTER INFORMATION STATEMENT
SPOTTERS ARE ENCOURAGED TO REPORT
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING
PROCEDURES.
DISCUSSION...BERC
AVIATION...PHILLIPSON
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