366
FXUS65 KVEF 261212
AFDVEF
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
512 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 12Z FORECAST PACKAGE
BREEZY
SOUTHWESTERLY WINDS WILL CONTINUE THROUGH THE MORNING, WITH GUSTS
PICKING UP TO 20 TO 25 KTS THIS AFTERNOON. GUSTS WILL SUBSIDE
OVERNIGHT BEFORE RETURNING SUNDAY AFTERNOON. NO OPERATIONALLY
SIGNIFICANT CLOUD COVER THROUGH THE TAF PERIOD.
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST
CALIFORNIA...FOR THE 12Z FORECAST PACKAGE...GUSTY SOUTH-
SOUTHWESTERLY WINDS EXPECTED ACROSS THE LAS VEGAS VALLEY AND
COLORADO RIVER VALLEY THIS AFTERNOON WITH SPEEDS BETWEEN 20 AND 25
KTS. KBIH WILL GUST FROM THE SOUTH-SOUTHEAST TO 25 KTS AND KDAG WILL
GUST FROM THE WEST TO 25 KTS. NO OPERATIONALLY SIGNIFICANT CLOUD
COVER THROUGH THE TAF PERIOD.
SPOTTER INFORMATION STATEMENT
SPOTTERS ARE ENCOURAGED TO REPORT
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING
PROCEDURES.
DISCUSSION...STESSMAN
AVIATION...SOULAT
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