339
FXUS65 KVEF 260904
AFDVEF
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
204 AM PDT SAT SEP 26 2026
KEY MESSAGES
* SOUTHWESTERLY BREEZES AND SEASONABLE TEMPERATURES WILL GIVE WAY
TO COOLER TEMPERATURES AND INCREASED PRECIPITATION CHANCES
SUNDAY THROUGH TUESDAY.
DISCUSSION
THROUGH FRIDAY.
SEASONABLE TEMPERATURES ARE ON TAP FOR THE REGION TODAY, WITH BREEZY
SOUTHWESTERLY WINDS PICKING UP ACROSS THE REGION AS AN UPPER-LEVEL
TROUGH BEGINS TO DEVELOP OFF THE COAST OF THE PACIFIC NORTHWEST.
THIS TROUGH WILL BEGIN TO DIG ALONG THE COAST ON SUNDAY, WHICH WILL
BRING COOLER TEMPERATURES AND GUSTY SOUTHWESTERLY WINDS TO THE AREA
ON SUNDAY. WHILE THIS TROUGH DIGS ALONG THE COAST, HURRICANE POLO
WILL CONTINUE TO APPROACH THE BAJA PENINSULA, PUSHING TROPICAL
MOISTURE INTO THE SOUTHWESTERN US AHEAD OF IT. THIS INCREASE IN
MOISTURE WILL BRING INCREASED PRECIPITATION CHANCES TO SOUTHERN
NEVADA, SOUTHEASTERN CALIFORNIA, AND NORTHWESTERN ARIZONA LATE
SUNDAY THROUGH TUESDAY. THINGS LIKE PRECIPITATION TOTALS AND THE
EXACT LOCATIONS OF SHOWERS AND THUNDERSTORMS REMAIN UNCERTAIN DUE TO
UNCERTAINTY REGARDING THE TIMING OF THE AFOREMENTIONED TROUGH AND
WHERE IT INTERCEPTS THE MOISTURE. IF THE TROUGH IS POSITIONED
SLIGHTLY FURTHER WEST, WE WILL SEE MORE MOISTURE ADVECTED INTO THE
AREA AHEAD OF THE TROUGH, WHICH WILL RESULT IN THE POTENTIAL FOR
MORE WIDESPREAD PRECIPITATION AND HIGHER PRECIPITATION TOTALS.
SHOULD THE TROUGH INTERCEPT THE MOISTURE FURTHER TO THE EAST, LESS
MOISTURE WILL BE AVAILABLE AND SHOWERS AND THUNDERSTORMS WILL BE
MORE LIMITED TO AREAS AROUND THE LOW AND OUT AHEAD OF THE TROUGH
AXIS. THIS TROUGH WILL CLEAR OUT OF THE AREA ON WEDNESDAY, WITH
RIDGING SETTING UP ACROSS THE SOUTHWESTERN US BEHIND IT. AS A
RESULT, WEATHER DURING THE SECOND HALF OF THE WILL BE DRIER AND
WARMER.
AVIATION...FOR HARRY REID...FOR THE 06Z FORECAST PACKAGE
LIGHT
SOUTHWESTERLY WINDS LAST INTO THE MIDMORNING BEFORE BECOMING
LIGHTER AND MORE VARIABLE. GUSTY SOUTHWESTERLY WINDS RETURN BY
LATE MORNING, LASTING THROUGH THE AFTERNOON.THESE WINDS REDUCE
AND BECOME LIGHT INTO THE EVENING. FEW TO SCT MID AND HIGH CLOUDS
WILL PASS OVER THE AREA THROUGHOUT THE TAF PERIOD.
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST
CALIFORNIA...FOR THE 06Z FORECAST PACKAGE...WINDS ARE REDUCING
ACROSS MUCH OF THE AREA, BECOMING LIGHT, HOWEVER GUSTIER WESTERLY
WINDS AT KDAG WILL LAST INTO THE LATE NIGHT. LIGHT WINDS LAST
ACROSS THE REGION THROUGH MUCH OF THE MORNING BEFORE GUSTY
SOUTHERLY TO SOUTHWESTERLY WINDS WILL PICK UP IN THE LAS VEGAS
VALLEY AND OWENS VALLEY IN THE LATE MORNING AND EARLY AFTERNOON.
EXPECT PEAK GUSTS BETWEEN 18 AND 24 KNOTS. IN THE COLORADO RIVER
VALLEY, WINDS MAINTAIN A SOUTHERLY TO SOUTHWESTERLY DIRECTION WITH
SPEEDS UNDER 10 KNOTS. WINDS LOOK TO REDUCE AGAIN INTO THE MID TO
LATE EVENING SATURDAY. FEW TO SCT MID AND HIGH CLOUDS WILL PASS
OVER THE AREA THROUGHOUT THE TAF PERIOD.
SPOTTER INFORMATION STATEMENT
SPOTTERS ARE ENCOURAGED TO REPORT
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING
PROCEDURES.
DISCUSSION...STESSMAN
AVIATION...MURDOCK
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