009
FXUS65 KVEF 240913
AFDVEF
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
213 AM PDT THU APR 24 2025
SYNOPSIS
TODAY'S WEATHER WILL BE FAIRLY SIMILAR TO YESTERDAY'S
ALBEIT A DEGREE OR TWO COOLER AND SLIGHTLY LESS WINDY. GUSTY
SOUTHWESTERLY WINDS WILL PICK UP ACROSS THE REGION TOMORROW AS A
LOW PRESSURE SYSTEM APPROACHES THE WEST COAST. THIS LOW PRESSURE
SYSTEM WILL MOVE THROUGH THE DESERT SOUTHWEST OVER THE WEEKEND
BRINGING COOLER THAN NORMAL TEMPERATURES, ELEVATED WINDS, AND
INCREASED CHANCES FOR ISOLATED SHOWERS WITH IT.
SHORT TERM
TODAY.
AFTERNOON TEMPERATURES WILL TOP OUT A DEGREE OR TWO COOLER THAN
YESTERDAY AS A SHORTWAVE CONTINUES TO PUSH THROUGH THE GREAT
BASIN, RESULTING IN A SLIGHT DECREASE IN 500 MB HEIGHTS. BREEZY
SOUTHERLY-TO-SOUTHWESTERLY WINDS WITH PEAK WIND GUSTS IN THE 20 TO
30 MPH RANGE ARE EXPECTED ACROSS SOUTHEASTERN CALIFORNIA,
SOUTHERN NEVADA, AND NORTHWESTERN ARIZONA. CLOUD COVER WILL
INCREASE THROUGHOUT THE DAY AS CLOUDS BEGIN TO PUSH IN FROM THE
WEST AHEAD OF A LARGER TROUGH SET TO IMPACT THE AREA OVER THE
WEEKEND.
LONG TERM
FRIDAY THROUGH WEDNESDAY.
A LARGE AND FAIRLY DEEP TROUGH WILL APPROACH THE WEST COAST ON
FRIDAY SPREADING HIGH CLOUDS AND GUSTY SOUTHWEST WINDS ACROSS THE
REGION IN ADVANCE. AS THE TROUGH PUSHES INLAND OVER THE WEEKEND,
SHARPLY COOLER TEMPERATURES WILL FOLLOW, WITH HIGH TEMPERATURES
FALLING 5 TO 10 DEGREES BELOW NORMAL. PRECIPITATION CHANCES WILL
REMAIN FAVORED ACROSS THE SIERRA AND SOUTHERN GREAT BASIN, BUT WITH
500MB TEMPS FALLING TO -25C OR COLDER NORTH OF I-40, CAN'T
COMPLETELY RULE OUT SOME STRAY TERRAIN DRIVEN SHOWERS DEVELOPING
EVEN FURTHER SOUTH.
GUIDANCE HAS COME INTO BETTER AGREEMENT ON A SLOWER EASTWARD
EJECTION OF THE TROUGH FROM THE AREA, KEEPING TEMPERATURES SLIGHTLY
BELOW NORMAL INTO MONDAY. THEREAFTER, HIGH PRESSURE RIDGING WILL
GRADUALLY BUILD ACROSS THE REGION WITH TEMPERATURES RETURNING TO ABOVE
NORMAL LEVELS BY MIDWEEK AND BEYOND.
AVIATION...FOR HARRY REID...FOR THE 06Z FORECAST PACKAGE
WINDS
GENERALLY REMAIN SOUTHWESTERLY THROUGH THE FORECAST PERIOD.
SUSTAINED SPEEDS TONIGHT ARE EXPECTED TO REMAIN AROUND 10KT OR
LESS UNTIL AROUND 10Z, WHEN HIGH-RESOLUTION GUIDANCE INDICATES A
BRIEF UPTICK IN WINDS TO AROUND 12-14KT WITH INTERMITTENT HIGHER
GUSTS POSSIBLE. PROBABILITIES FOR GUSTS OF 20KT REMAIN VERY LOW
OVERNIGHT, THOUGH A FEW GUSTS TO 15-19KT CAN BE EXPECTED. AROUND
DAYBREAK, GUSTS DIMINISH BEFORE RETURNING ONCE AGAIN BY EARLY
AFTERNOON, WITH A 50% PROBABILITY FOR WIND GUSTS TO REACH 20KT
THROUGH SUNSET. VFR CONDITIONS WILL PREVAIL, WITH PASSING HIGH
CLOUDS THROUGH THE PERIOD AND AN UPTICK IN MID CLOUDS AROUND 15KFT
AFTER 25/00Z.
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST
CALIFORNIA...FOR THE 06Z FORECAST PACKAGE...KVGT AND KHND FOLLOW
SIMILAR TRENDS TO KLAS, WITH MAINLY SOUTHWESTERLY WINDS THE NEXT
24 HOURS, EXCEPT FOR A BRIEF PERIOD OF DIURNAL WINDS AT KVGT LATE
TONIGHT THROUGH THURSDAY MORNING. GUSTS TO AROUND 20-25KT ARE
EXPECTED TO RETURN BY EARLY AFTERNOON, DIMINISHING AFTER SUNSET.
KBIH WILL SEE NORTHWESTERLY WINDS THROUGH EARLY THURSDAY
AFTERNOON, WHEN GUSTY UP-VALLEY WINDS ARE EXPECTED WITH GUSTS TO
AROUND 20KT THROUGH THE EVENING. AT KDAG, WINDS WILL VARY BETWEEN
SOUTHWEST AND WEST-NORTHWEST, WITH SUSTAINED SPEEDS AROUND 12-17KT
AND GUSTS TO 25-30KT OVERNIGHT TONIGHT AND ONCE AGAIN THURSDAY
AFTERNOON AND EVENING. IN THE LOWER COLORADO RIVER VALLEY, KEED
AND KIFP, WINDS AROUND 10KT OR LESS ARE EXPECTED THROUGH THURSDAY
MORNING, WITH A RETURN OF GUSTY SOUTHERLY WINDS EXPECTED AT BOTH
TERMINALS BETWEEN 18-21Z. GUSTS TO AROUND 20KT ARE EXPECTED, WITH
GUSTS DIMINISHING AFTER SUNSET. VFR CONDITIONS WILL PREVAIL
AREAWIDE, WITH PERIODIC MID AND HIGH CLOUDS.
SPOTTER INFORMATION STATEMENT
SPOTTERS ARE ENCOURAGED TO REPORT
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING
PROCEDURES.
SHORT TERM...STESSMAN
LONG TERM...OUTLER
AVIATION...PHILLIPSON
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