466
FXUS65 KVEF 010846
AFDVEF
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
146 AM PDT TUE APR 1 2025
SYNOPSIS
GUSTY WEST WINDS WILL CONTINUE THROUGHOUT THE DAY
TODAY FOR MOST OF SAN BERNARDINO COUNTY WHERE MULTIPLE WIND
ADVISORIES REMAIN IN EFFECT. TEMPERATURES ACROSS THE REGION WILL
BE AROUND 8 TO 12 DEGREES COOLER TODAY THAN YESTERDAY, COOLING
FURTHER ON WEDNESDAY. ISOLATED SHOWERS (AND POSSIBLY EVEN A RUMBLE
OF THUNDER) WILL BE POSSIBLE ACROSS THE EASTERN PORTIONS OF OUR
FORECAST AREA ON WEDNESDAY AND THURSDAY. TEMPERATURES WILL BEGIN
TO RECOVER ON THURSDAY, RETURNING TO NEAR NORMAL OVER THE
WEEKEND.
SHORT TERM
THROUGH THURSDAY.
WINDS ACROSS SOUTHERN NEVADA, NORTHWEST ARIZONA,AND EAST-CENTRAL
CALIFORNIA HAVE BEGUN TO DECREASE AS THE UPPER-LEVEL TROUGH
RESPONSIBLE CONTINUES TO DIG SOUTH. WHILE SOUTHERN NEVADA AND
NORTHWEST ARIZONA WILL SEE MUCH LIGHTER WINDS TODAY THAN THEY SAW
YESTERDAY, THE EASTERN SIERRA AND MOST OF SAN BERNARDINO COUNTY WILL
CONTINUE TO SEE GUSTY WEST WINDS CONTINUE THROUGHOUT THE DAY TODAY.
TEMPERATURES ACROSS THE REGION WILL BE AROUND 8 TO 12 DEGREES COOLER
TODAY THAN THEY WERE YESTERDAY AND TODAY ISN'T EVEN GOING TO BE THE
COLDEST DAY OF THE WEEK.
OUR UPPER-LEVEL TROUGH WILL CONTINUE TO DIG SOUTH TODAY AND TOMORROW
BEFORE SHIFTING SLIGHTLY EAST ON THURSDAY. A SHORTWAVE WILL DROP
INTO THE REGION ON WEDNESDAY, REINFORCING THE TROUGH AND KNOCKING
TEMPERATURES DOWN ANOTHER 2 TO 7 DEGREES. IN ADDITION TO COOLER
TEMPERATURES, THIS SYSTEM WILL ALSO BRING BREEZY NORTHWESTERLY WINDS
TO THE SOUTHERN GREAT BASIN. THIS SHORTWAVE WILL ALSO HELP TO
ENHANCE UPPER-LEVEL FORCING, WHICH WHEN COMBINED WITH MEAGER
INSTABILITY ACROSS THE REGION AND COOLER TEMPERATURES ALOFT WILL
ALLOW US TO TRY TO CAPITALIZE ON THE LIMITED AVAILABLE MOISTURE VIA
ISOLATED SHOWERS/VIRGA ON WEDNESDAY AND THURSDAY. THE HIGHER TERRAIN
OF LINCOLN, CLARK, AND MOHAVE COUNTIES WILL HAVE THE BEST SHOT AT
SEEING SHOWERS DEVELOP ON WEDNESDAY WITH A 30 TO 60% CHANCE OF
PRECIPITATION. SLIGHTLY FURTHER TO THE WEST, THE HIGHER TERRAIN OF
THE MOJAVE PRESERVE AND EASTERN SAN BERNARDINO COUNTY WILL SEE A 20
TO 30% CHANCE OF PRECIPITATION. THE PRIMARY HAZARDS WITH ANY SHOWERS
THAT DEVELOP WILL BE LIGHT PRECIPITATION, VARIABLE BREEZY WINDS, AND
LIGHTNING. WITH SNOW-LEVELS AROUND 4,500 TO 5,000 FEET ON WEDNESDAY,
MINOR SNOW ACCUMULATIONS WILL BE POSSIBLE IN AREAS OF HIGHER TERRAIN
WHERE PRECIPITATION MANAGES TO MAKE IT TO THE GROUND.
TEMPERATURES WILL BEGIN TO RECOVER ON THURSDAY AND CHANCES FOR
ISOLATED SHOWERS WILL SHIFT TO THE EASTERN PORTIONS OF OUR FORECAST
AREA AS THE TROUGH PREPARES TO MAKE ITS EXCEPTIONALLY SLOW EXIT FROM
THE DESERT SOUTHWEST.
LONG TERM
FRIDAY THROUGH MONDAY.
THE BROAD AREA OF UPPER-LEVEL TROUGHING WILL CLOSE OFF OVER SOUTHERN
NEVADA ON THURSDAY BEFORE IT PUSHES EASTWARD OUT OF OUR FORECAST
AREA ON FRIDAY. WITH A PACIFIC RIDGE GROWING TO OUR WEST, THIS WILL
PUT OUR FORECAST AREA BENEATH TIGHT PRESSURE GRADIENTS THAT WILL
INCREASE NORTHERLY WIND GUSTS ACROSS THE REGION BOTH FRIDAY AND
SATURDAY AFTERNOONS. CHANCE OF 40 MPH WIND GUSTS ON FRIDAY AND
SATURDAY IS 30-50% AND 40-60%, RESPECTIVELY, WITH GREATER CHANCES IN
THE HIGHER TERRAIN AND ALONG THE COLORADO RIVER VALLEY, DUE TO
TOPOGRAPHIC ENHANCEMENT. POPS WILL HAVE GENERALLY SUBSIDED BY FRIDAY
AFTERNOON, THOUGH SLIGHT CHANCES PERSIST IN OUR FAR NORTHERN AND
EASTERN ZONES. LITTLE-TO-NO ACCUMULATION EXPECTED AT THIS TIME.
THROUGH THE WEEKEND AND START OF NEXT WEEK, SKIES CLEAR AND
TEMPERATURES INCREASE TO AT-OR-SLIGHTLY-ABOVE SEASONAL NORMALS AS A
RIDGE OF HIGH PRESSURE SETS UP OVER THE DESERT SOUTHWEST.
AVIATION...FOR HARRY REID
FOR THE 06Z FORECAST
PACKAGE...SOMEWHAT ERRATIC AND GUSTY WINDS ARE THE PRIMARY
AVIATION CONCERN TONIGHT. THIS EVENING, A ROTOR HAS DEVELOPED
DOWNWIND OF THE SPRING MOUNTAINS, IMPACTING KLAS. AT THE SURFACE,
SOMEWHAT VARIABLE SOUTHERLY TO SOUTHEASTERLY WINDS AROUND 10KT
GUSTING TO 20KT WILL PERSIST THROUGH AROUND 08Z, WITH WINDS ALOFT
REMAINING STRONG OUT OF THE WEST-SOUTHWEST. THEREAFTER, WEST-
SOUTHWESTERLY WINDS WILL RESUME AT THE SURFACE AND ALOFT, WITH
SUSTAINED SPEEDS EXPECTED TO DROP TO AROUND 15KT WITH GUSTS TO
25KT. PRIOR TO DAYBREAK, GUSTS WILL DIMINISH, WITH WIND SPEEDS
DECREASING TO AROUND 10KT. WINDS AROUND 10-12KT WILL THEN PERSIST
THROUGH THE PERIOD, VARYING BETWEEN THE SOUTHWEST AND NORTHWEST.
INTERMITTENT GUSTS ARE POSSIBLE, BUT CONFIDENCE IS TOO LOW TO
INCLUDE MENTION DURING A SPECIFIC TIME FRAME. VFR CONDITIONS WILL
PREVAIL, WITH CEILINGS ABOVE 15KFT MITIGATING ANY CEILING-RELATED
OPERATIONAL IMPACTS.
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST
CALIFORNIA...FOR THE 06Z FORECAST PACKAGE...GUSTY WINDS ARE THE
MAIN CONCERN AT ALL TERMINALS THE NEXT 24 HOURS. SOUTHWESTERLY
WINDS WILL CONTINUE TONIGHT AT KVGT AND KHND, WITH BOTH TERMINALS
EXPECTED TO BE BEYOND THE REACH OF THE ROTOR IMPACTING KLAS. GUSTS
TO AROUND 25-30KT ARE EXPECTED AT BOTH TERMINALS, BEFORE GUSTS
DIMINISH AROUND 12-13Z. THEREAFTER, WINDS SHIFT FROM THE SOUTHWEST
TO NORTHWEST, BECOMING ELEVATED AND INTERMITTENTLY GUSTY AT VGT,
WITH GUSTS HOLDING OFF UNTIL THE AFTERNOON AT KHND WHEN WINDS
AGAIN BACK TO THE SOUTHWEST. NORTHERLY WINDS ARE EXPECTED AT KBIH
THROUGH THE MORNING, BECOMING GUSTY WITH GUSTS TO 20-25KT EXPECTED
EARLY MORNING THROUGH EARLY AFTERNOON. THEREAFTER, WINDS BACK TO
THE WEST, INCREASING TO 20KT WITH GUSTS TO AROUND 30KT, THEN
VEERING TO THE NORTH AFTER SUNSET, REMAINING GUSTY. GUSTY WEST
WINDS WILL REMAIN THE RULE AT KDAG, WITH GUSTS TO 30-40KT EXPECTED
TO CONTINUE THE NEXT 24 HOURS. KEED WILL HAVE WESTERLY WINDS
THROUGHOUT THE PERIOD AS WELL, WITH SOME VARIABILITY, AND GUSTS TO
AROUND 25KT EXPECTED TO DEVELOP PRIOR TO DAYBREAK, INCREASING TO
30-35KT AFTER SUNSET. AT KIFP, WINDS WILL BE A BIT MORE VARIABLE,
BUT GENERALLY SOUTHERLY THROUGH MOST OF THE DAY BEFORE SHIFTING TO
THE WEST DURING THE AFTERNOON AND BECOMING GUSTY BY EARLY
EVENING. OTHERWISE, VFR CONDITIONS PREVAIL WITH MID AND HIGH
CLOUDS AT OR ABOVE 15KFT AT ALL BUT KBIH WHERE CEILINGS AROUND
9-10KFT ARE EXPECTED.
SPOTTER INFORMATION STATEMENT
SPOTTERS ARE ENCOURAGED TO REPORT
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING
PROCEDURES.
SHORT TERM...STESSMAN
LONG TERM...SOULAT
AVIATION...PHILLIPSON
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