280
FXUS65 KVEF 180809
AFDVEF
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
109 AM PDT SUN MAY 18 2025
SYNOPSIS
BREEZY NORTHWEST WINDS CAN BE EXPECTED THE NEXT COUPLE
DAYS WITH SEASONABLY COOL TEMPERATURES FOR MID-MAY. OTHERWISE, DRY
CONDITIONS RESUME WITH TEMPERATURES CLIMBING WELL ABOVE NORMAL BY
TUESDAY ONWARD.
SHORT TERM
THROUGH MONDAY NIGHT.
FAIRLY POTENT TROUGH WHICH BROAD WIDESPREAD STRONG WINDS, DUST,
AND A FEW THUNDERSTORMS TO THE REGION SATURDAY IS NOW EXISTING
INTO THE FOUR CORNERS REGION ENROUTE TO THE HIGH PLAINS. OUR
REGION WILL REMAIN IN A COOL NORTHWESTERLY FLOW TODAY AND MONDAY,
WITH ELEVATED NORTHWESTERLY WINDS EXPECTED. A SECONDARY
DISTURBANCE DROPPING DOWN THE BACKSIDE OF OUR EXITING TROUGH WILL
STIR UP NORTH WINDS DOWN THE COLORADO RIVER VALLEY AND NORTHWEST
ARIZONA MONDAY BUT WINDS WILL REMAIN GENERALLY BELOW ADVISORY
LEVELS WITH NO PRECIPITATION EXPECTED.
LONG TERM
TUESDAY THROUGH SATURDAY.
A RIDGE BUILDS OVER THE WESTERN UNITED STATES STARTING ON TUESDAY AS
LOW PRESSURE MOVES INTO THE GREAT PLAINS. SURFACE TEMPERATURES WILL
INCREASE WITHIN THE FORECAST AREA IN RESPONSE TO RISING HEIGHTS
ALOFT. THE PROBABILITY OF REACHING 100 DEGREES IN LAS VEGAS ON
THURSDAY SITS AT 75 PERCENT. ON THURSDAY AND FRIDAY, EXPECT
WIDESPREAD MODERATE (LEVEL 2) HEATRISK ACROSS THE DESERT VALLEYS, A
LEVEL OF HEAT THAT AFFECTS ANYONE SENSITIVE TO HEAT, ESPECIALLY
THOSE WITHOUT ADEQUATE COOLING OR HYDRATION. THERE IS ALSO THE
POTENTIAL FOR SOME MAJOR (LEVEL 3) HEATRISK ALONG THE COLORADO RIVER
AS WELL AS DEATH VALLEY, WHICH AFFECTS ANYONE WITHOUT EFFECTIVE
COOLING OR HYDRATION. KNOW WHERE TO FIND THE NEAREST COOL LOCATION
AND BRING PLENTY OF WATER IF PLANNING ON SPENDING TIME OUTDOORS.
ANOTHER TROUGH MAY APPROACH THE AREA TOWARDS THE END OF THE WEEK.
WILL CONTINUE TO MONITOR FOR WIND AND OTHER POTENTIAL IMPACTS AS IT
DRAWS CLOSER.
AVIATION...FOR HARRY REID...FOR THE 06Z FORECAST PACKAGE
GUSTY
NORTHWEST WINDS LATE THIS EVENING SHOULD CONTINUE TO DECREASE
OVERNIGHT, WITH GUSTS ENDING AFTER MIDNIGHT. HOWEVER, THE NORTHWEST
WINDS WILL INCREASE AGAIN AFTER SUNRISE, AND GUSTS OF 25 TO 30 MPH
ARE EXPECTED BY LATE MORNING. SOME GUIDANCE IS SHOWING A TURN TO
THE NORTH-NORTHEAST AFTER 22Z TOMORROW. HOWEVER, THIS SOLUTION IS
IN THE MINORITY, AND A MORE NORTHERLY DIRECTION WAS MAINTAINED LATE
TOMORROW AFTERNOON WITH THIS FORECAST PACKAGE. WINDS WILL DECREASE
AFTER SUNSET, WITH GUSTS ENDING BY MID-EVENING. VFR CONDITIONS ARE
EXPECTED THROUGH THE TAF PERIOD, WITH SCT TO BKN CLOUDS AOA 10KFT
AGL THROUGH THE NIGHT, WITH MOSTLY CLEAR SKIES DEVELOPING TOMORROW.
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST
CALIFORNIA...FOR THE 06Z FORECAST PACKAGE...CONDITIONS AT THE LAS
VEGAS AREA TAF SITES WILL BE SIMILAR TO WHAT IS DESCRIBED ABOVE FOR
HARRY REID. ELSEWHERE, NORTHWEST TO NORTH WINDS ARE EXPECTED TO
DEVELOP EVERYWHERE EXCEPT DAG, WHERE A MORE WESTERLY DIRECTION IS
EXPECTED. GUSTS TO 25 KNOTS ARE EXPECTED IN THE OWENS VALLEY AND
ACROSS THE WESTERN MOJAVE DESERT, WHILE WINDS IN THE COLORADO RIVER
VALLEY WILL GENERALLY REMAIN 15 KNOTS OR LESS. VFR CONDITIONS
PREVAIL WITH SCT TO BKN CLOUDS AOA 10KFT AGL THROUGH TONIGHT,
FOLLOWED BY MOSTLY CLEAR SKIES TOMORROW.
SPOTTER INFORMATION STATEMENT
SPOTTERS ARE ENCOURAGED TO REPORT
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING
PROCEDURES.
SHORT TERM...OUTLER
LONG TERM...MELTZER
AVIATION...PLANZ
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