389
FXUS65 KVEF 201927
AFDVEF
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
1227 PM PDT MON APR 20 2026
KEY MESSAGES
* GUSTY SOUTH-SOUTHWEST WINDS WILL PICK UP ACROSS THE FORECAST AREA
ON TUESDAY, WITH HIGH WIND WARNINGS IN EFFECT IN THE SOUTHWESTERN
GREAT BASIN AND WIND ADVISORIES ELSEWHERE.
* QUIET WEATHER RETURNS MID-TO-LATE WEEK BEFORE THE REGION GEARS
UP FOR THE APPROACH OF ANOTHER WEATHER SYSTEM OVER THE WEEKEND.
DISCUSSION
TODAY THROUGH SUNDAY.
TODAY WILL BE THE WARMEST DAY OF THE FORECAST PERIOD WITH AFTERNOON
HIGH TEMPERATURES AROUND 10 DEGREES ABOVE SEASONAL NORMALS. THE
RIDGE ALOFT WILL DEAMPLIFY ON TUESDAY AS A CLOSED AREA OF LOW
PRESSURE MEANDERS INLAND. THE PRIMARY IMPACT OF THIS WEATHER SYSTEM
WILL BE THE STRONG GUSTY SOUTH-SOUTHWESTERLY WINDS ON TUESDAY. THE
HIGH WIND WATCH FOR ESMERALDA AND CENTRAL NYE COUNTIES HAS BEEN
UPGRADED TO A HIGH WIND WARNING AND NOW INCLUDES DEATH VALLEY
NATIONAL PARK, WITH 70-90 PERCENT CHANCES OF SEEING WIND GUSTS AT OR
IN EXCESS OF 58 MPH (WITH BEST CHANCES IN THE HIGHER TERRAIN /
MOUNTAINS). ELSEWHERE ACROSS THE SOUTHERN GREAT BASIN AND MOJAVE
DESERT, WIND ADVISORIES ARE IN EFFECT ON TUESDAY WITH PEAK WIND
GUSTS BETWEEN 40 AND 50 MPH. THESE ADVISORIES EXCLUDE EASTERN SAN
BERNARDINO COUNTY AND THE LOWER COLORADO RIVER VALLEY, AS THOSE
LOCATIONS CAN EXPECT GUSTS GENERALLY BETWEEN 20 AND 30 MPH. THE
ASSOCIATED COLD FRONT WILL PUSH THROUGH THE REGION TUESDAY NIGHT
INTO WEDNESDAY, ALLOWING FOR A 10 TO 12 DEGREE TEMPERATURE DROP.
FINALLY, THERE IS A 20-40 PERCENT CHANCE OF LIGHT RAIN ACROSS THE
SOUTHERN GREAT BASIN AS WELL AS LIGHT SNOW ABOVE 6000 FEET. RAINFALL
ACCUMULATIONS WILL RANGE BETWEEN 0.05 AND 0.15 INCHES, WITH GREATER
AMOUNTS FURTHER NORTH AND IN THE MOUNTAINS. SNOWFALL ACCUMULATIONS
IN THE SIERRA NEVADA WILL RANGE 8 TO 12 INCHES ABOVE 8500 FEET.
POST-FRONTAL WEST-NORTHWESTERLY WINDS WILL CONTINUE IN THE WESTERN
MOJAVE DESERT ON WEDNESDAY, BUT CURRENTLY LOOK TO REMAIN SUB-
ADVISORY. MEANWHILE, MODEST RIDGING RETURNS TO THE REGION THROUGH
THE REMAINDER OF THE WORK WEEK, ALLOWING AFTERNOON HIGH TEMPERATURES
TO CLIMB BACK TO A FEW DEGREES ABOVE-NORMAL. UNCERTAINTY RETURNS TO
THE REGION OVER THE WEEKEND AS A CLOSED AREA OF LOW PRESSURE MOVES
INLAND OFF THE SOUTHERN CALIFORNIA COAST.
AVIATION...FOR HARRY REID...FOR THE 18Z FORECAST PACKAGE
LIGHT, MAINLY NORTHEAST TO EAST WINDS TO AROUND 7 KNOTS ARE EXPECTED
THROUGH 19Z BEFORE SOUTHEASTERLY WINDS BEGIN TO INCREASE. SOUTHEAST
WINDS WITH GUSTS TO AROUND 15-18 KNOTS ARE EXPECTED THROUGH MUCH OF
THE EARLY AFTERNOON BEFORE VEERING TO THE SOUTH-SOUTHWEST AFTER 22Z.
AFTER 22Z, SOUTH WINDS 20-25 KNOTS ARE EXPECTED THROUGH 03Z BEFORE
DIMINISHING TO 10 KNOTS OR LESS OVERNIGHT. GUSTY SOUTH WINDS
EXPECTED TUESDAY WITH GUSTS TO AROUND 35 KNOTS IN THE AFTERNOON. VFR
CONDITIONS WILL PREVAIL WITH FEW-SCT CLOUDS BETWEEN 15-25KFT.
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST
CALIFORNIA...FOR THE 18Z FORECAST PACKAGE...SOUTH WINDS INCREASING
TO AROUND 15 KNOTS AND GUSTS TO 20-25 KNOTS ARE EXPECTED TO DEVELOP
BETWEEN 19-20Z AND CONTINUE INTO THE EVENING, DIMINISHING
THEREAFTER. EXCEPTIONS TO THIS INCLUDE THE NORTHERN OWENS
VALLEY/KBIH WHERE GUSTY UP-VALLEY WINDS TO 30-35 KNOTS ARE EXPECTED
LATE MORNING INTO THIS EVENING DIMINISHING, AND THE WESTERN MOJAVE
DESERT/KDAG WHERE WINDS MAINTAIN MORE OF A WESTERLY DIRECTION. VFR
CONDITIONS WILL PREVAIL, WITH PASSING BANDS OF CLOUDS BETWEEN 15-
25KFT.
SPOTTER INFORMATION STATEMENT
SPOTTERS ARE ENCOURAGED TO REPORT
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING
PROCEDURES.
DISCUSSION...SOULAT
AVIATION...GORELOW
FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:
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