371
FXUS65 KVEF 090433
AFDVEF
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
932 PM PDT MON JUN 8 2026
KEY MESSAGES
* WARM, BREEZY AND DRY CONDITIONS WILL CONTINUE TO PROMOTE HIGH
FIRE DANGER THROUGH TUESDAY.
* A BUILDING AREA OF HIGH PRESSURE WILL RESULT IN HOT TEMPERATURES
AND INCREASING HEAT RISK BY MID TO LATE WEEK.
DISCUSSION
TODAY THROUGH SUNDAY.
AS AN UPPER TROUGH CONTINUES TO DRIFT ACROSS THE PACIFIC
NORTHWEST, BREEZY SOUTH/SOUTHWEST WINDS PERSIST ACROSS MUCH OF THE
DESERT SOUTHWEST. THIS, COUPLED WITH WARM-TO-HOT TEMPERATURES AND
LOW HUMIDITIES CONTINUES TO PROMOTE HIGH FIRE DANGER. SOME
IMPROVEMENT IN CONDITIONS WILL BE FELT OVERNIGHT AS HUMIDITIES CLIMB
AND WINDS DECREASE SLIGHTLY. HOWEVER, MUCH OF NORTHERN/WESTERN
ARIZONA AND THE ADJACENT COLORADO RIVER VALLEY WILL REMAIN HOT, DRY,
AND WINDY ON TUESDAY, WITH A CONTINUED THREAT OF WILDFIRES. THE FIRE
DANGER WILL DROP MARKEDLY WEDNESDAY INTO THURSDAY AS WINDS DECREASE
AND HIGH PRESSURE BUILDS IN OVER THE REGION.
FROM MIDWEEK ON, AS THE UPPER TROUGH SHIFTS EASTWARD, GLOBAL
ENSEMBLES DEPICT A BROAD AND POTENT UPPER-LEVEL TROUGH DEVELOPING
ACROSS THE PACIFIC NORTHWEST, EXTENDING SOUTHWARD ALONG THE PACIFIC
COAST AND INTO THE DESERT SOUTHWEST. THIS WILL USHER IN A PERIOD OF
UNSEASONABLY HOT CONDITIONS FOR MID-JUNE, WITH WIDESPREAD TRIPLE-
DIGIT HIGHS. IN FACT, SOME AREAS WILL SEE A 50% OR BETTER CHANCE OF
MAXIMUM TEMPERATURES OF 110 DEGREES OR MORE, INCLUDING THE COLORADO
RIVER VALLEY AND DEATH VALLEY FRIDAY THROUGH THE WEEKEND.
THE INCREASE IN BOTH DAYTIME HIGHS AND OVERNIGHT LOWS WILL RESULT
IN A RE-EMERGENCE OF MAJOR HEAT RISK IN MANY AREAS, MAKING HEAT A
SIGNIFICANT FACTOR FOR THOSE OUTDOORS OR WITHOUT PROPER COOLING
AND HYDRATION. ONE POTENTIAL FAILURE MODE FOR HOTTER TEMPERATURES
RELATES TO AN AREA OF TROPICAL MOISTURE OVER THE BAJA. SOME
ENSEMBLE SOLUTIONS DEPICT AREAS OF MID AND HIGH CLOUDINESS
SPREADING NORTHWARD ACROSS THE DESERT SOUTHWEST SATURDAY AND
SUNDAY AS MOISTURE IS SHEARED OFF OF THIS FEATURE. SHOULD THIS
MATERIALIZE, IT WOULD LIMIT DAYTIME HIGHS AND PERHAPS BRING AND
ISOLATED SHOWER OR THUNDERSTORM RISK; HOWEVER, CONFIDENCE IS LOW IN
THIS OCCURRENCE. THIS WILL BE SOMETHING TO MONITOR AS WE MOVE
FURTHER INTO THE WORKWEEK AND ENSEMBLES SETTLED ON A MORE CONSISTENT
SOLUTION.
AVIATION...FOR HARRY REID...FOR THE 06Z FORECAST PACKAGE
GUSTY
SOUTH-SOUTHWEST WINDS WILL CONTINUE THROUGH AROUND 12Z, THOUGH THERE
IS A 30-40 PERCENT CHANCE THAT GUSTS SPORADICALLY CONTINUE THROUGH
THE ENTIRE OVERNIGHT PERIOD. OTHERWISE, GUSTS WILL SUBSIDE AND
SUSTAINED WINDS AROUND 8 KTS WILL PERSIST. SOUTH-SOUTHWEST WIND
GUSTS WILL RETURN TUESDAY AFTERNOON WITH SPEEDS BETWEEN 20 AND 25
KTS. NO OPERATIONALLY SIGNIFICANT CLOUD COVER THROUGH THE TAF
PERIOD. 25 PERCENT CHANCE OF 100 DEGREE TEMPERATURES ON TUESDAY,
WITH THE BEST CHANCES BETWEEN 22 AND 02Z.
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST
CALIFORNIA...FOR THE 06Z FORECAST PACKAGE...GUSTY SOUTH-SOUTHWEST
WINDS WILL RETURN TO LAS VEGAS VALLEY AND COLORADO RIVER VALLEY TAF
SITES TUESDAY AFTERNOON, WITH GUST SPEEDS PEAKING BETWEEN 25 AND 30
KTS. LIGHT NORTHWESTERLY WINDS EXPECTED AT KBIH WITH SPEEDS BRIEFLY
PICKING UP TO 8 TO 12 KTS AROUND 00Z. GUSTY WEST WINDS AT KDAG WILL
BE ELEVATED AROUND 30 KTS OVERNIGHT AND AROUND 20 KTS IN THE
AFTERNOON. NO OPERATIONALLY SIGNIFICANT CLOUD COVER THROUGH THE TAF
PERIOD.
FIRE WEATHER
WIDESPREAD GUSTY SOUTHWESTERLY WINDS COMBINED WITH
LOW HUMIDITY AND DRY FUELS RESULT IN ELEVATED TO CRITICAL FIRE
WEATHER CONDITIONS FOR MUCH OF SOUTHERN NEVADA INTO WESTERN
ARIZONA. A RED FLAG WARNING REMAINS IN EFFECT FOR NORTHWESTERN
ARIZONA AND MOST OF SOUTHERN NEVADA TODAY. FOR TOMORROW, THE
TROUGH RESPONSIBLE FOR THESE WINDS SHIFT TO THE EAST, BRINGING THE
MAIN FOCUS FOR GUSTY SOUTHWESTERLY WINDS TO NORTHWESTERN ARIZONA.
THEREFORE, THE RED FLAG WARNING WILL REMAIN IN EFFECT FOR ALL
NORTHWESTERN ARIZONA ZONES AND THE NEVADA SIDE OF THE COLORADO
RIVER VALLEY TOMORROW AS WELL. CONDITIONS ARE EXPECTED TO IMPROVE
WEDNESDAY ONWARD AS THE SYSTEM EXITS AND WINDS WEAKEN.
SPOTTER INFORMATION STATEMENT
SPOTTERS ARE ENCOURAGED TO REPORT
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING
PROCEDURES.
DISCUSSION...AUSTIN
AVIATION...SOULAT
FIRE WEATHER...MELTZER
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