877
FXUS65 KVEF 181729
AFDVEF
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
1029 AM PDT MON MAY 18 2026
KEY MESSAGES
* TODAY'S WEATHER INCLUDES COOL TEMPERATURES AND DECREASING WINDS
BEFORE A WARMING TREND TAKES PLACE THROUGH THE REST OF THE WEEK.
DISCUSSION
THROUGH SUNDAY.
THE TROUGH RESPONSIBLE FOR YESTERDAY'S WINDS IS CENTERED OVER THE
NEVADA-UTAH STATE LINE AS OF MIDNIGHT PDT/MST AND WILL CONTINUE TO
MOVE EAST THIS MORNING. WIND SPEEDS WILL DECREASE AREAWIDE IN
RESPONSE. WIND ADVISORIES AND HIGH WIND WARNINGS REMAIN IN EFFECT
UNTIL 5 AM PST/MST THIS MORNING FOR MOST LOCATIONS. NORTHERLY WINDS
REMAIN IN THE COLORADO RIVER VALLEY THIS MORNING WITH GUSTS BETWEEN
30 AND 40 MPH, WHICH WILL BRING WAVES OF 2 TO 4 FEET ON AREA LAKES.
A HIGH WIND WARNING WILL CONTINUE UNTIL 11 AM PDT/MST, BUT THESE
WINDS WILL WEAKEN IN THE AFTERNOON. ALSO OF INTEREST IS NOTABLY
COOLER TEMPERATURES TODAY, WITH HIGHS 10 TO 15 DEGREES BELOW NORMAL
FOR MID-MAY. THIS MEANS HIGHS IN THE UPPER 70S TO LOW 80S FOR THE
MOJAVE DESERT VALLEYS INCLUDING LAS VEGAS AND HIGHS IN THE 60S TO
LOW 70S IN THE SOUTHERN GREAT BASIN AND OWENS VALLEY. HOWEVER, THESE
UNSEASONABLY COOL TEMPERATURES WILL BE SHORT LIVED AS HIGH PRESSURE
REBUILDS OVER THE WEST COAST THROUGHOUT THE WEEK. HIGHS RETURN TO
NEAR NORMAL VALUES BY WEDNESDAY AND CLIMB TO 5 TO 10 DEGREES ABOVE
NORMAL BY FRIDAY, LASTING THROUGH THE WEEKEND.
AVIATION...FOR HARRY REID...FOR THE 18Z FORECAST PACKAGE
GUSTY
NORTHEASTERLY WINDS (WITH DIRECTIONAL VARIABILITY BETWEEN 020-050
TRUE) WILL CONTINUE INTO THIS AFTERNOON, WITH GUSTS TO AROUND
20-25KT EXPECTED ON AT LEAST AN INTERMITTENT BASIS. GUSTS ARE
EXPECTED TO DIMINISH BY MID-AFTERNOON, WITH SUSTAINED SPEEDS
DROPPING TO AROUND 10KT. WINDS BACK TO THE NORTH LATE EVENING AND
TO THE NORTHWEST OVERNIGHT, BEFORE SHIFTING TO THE NORTH AND
NORTHEAST AGAIN ON TUESDAY MORNING. ANOTHER ROUND OF GUSTY
NORTHEASTERLY WINDS IS EXPECTED MID-MORNING THROUGH EARLY TO MID-
AFTERNOON TUESDAY, THOUGH SLIGHTLY WEAKER THAN TODAY, WITH GUSTS
EXPECTED TO TOP OUT AROUND 20KT. VFR CONDITIONS WITH CLEAR SKIES
WILL PREVAIL.
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST
CALIFORNIA...FOR THE 18Z FORECAST PACKAGE...GUSTY NORTHERLY TO
NORTHEASTERLY WINDS ARE EXPECTED ACROSS THE AREA THROUGH THIS
AFTERNOON, WITH GUSTS TO 20-25KT COMMON FOR MOST LOCATIONS OUTSIDE
OF THE LOWER COLORADO RIVER VALLEY. THERE, FROM ROUGHLY KIFP TO
KEED, TERRAIN-ENHANCED NORTHERLY WINDS WILL GUST TO AROUND 35KT
THROUGH LATE AFTERNOON, SLOWLY DECREASING THROUGH THE EVENING.
ELSEWHERE, GUSTS WILL LARGELY DIMINISH AFTER SUNSET, WITH ELEVATED
AND GUSTY NORTHERLY TO NORTHEASTERLY WINDS RETURNING ACROSS
SOUTHERN NEVADA AND NORTHWESTERN ARIZONA BY MID-MORNING TUESDAY.
VFR CONDITIONS WILL PREVAIL, WITH ONLY A FEW HIGH CLOUDS LATE IN
THE PERIOD ACROSS FAR SOUTHERN AREAS.
SPOTTER INFORMATION STATEMENT
SPOTTERS ARE ENCOURAGED TO REPORT
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING
PROCEDURES.
DISCUSSION...MELTZER
AVIATION...PHILLIPSON
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