290
FXUS65 KVEF 272329
AFDVEF
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
329 PM PST SAT DEC 27 2025
KEY MESSAGES
* GUSTY NORTH WINDS ARE EXPECTED IN THE COLORADO RIVER VALLEY
SUNDAY AND MONDAY WHICH WILL MAKE FOR HAZARDOUS BOATING
CONDITIONS.
* DRIER CONDITIONS RESUME THROUGH EARLY NEXT WEEK BUT RENEWED RAIN
CHANCES ARRIVE NEW YEARS EVE ONWARD.
DISCUSSION
THROUGH NEXT WEEK.
SKIES ARE CLEARING THIS AFTERNOON AS THE PRIMARY SHORTWAVE
RESPONSIBLE FOR UNSETTLED CONDITIONS FRIDAY HAS MOVED INTO THE
FOUR CORNERS REGION. GENERALLY PLEASANT CONDITIONS WILL CONTINUE
THROUGH THE REMAINDER OF TODAY BUT NORTHERLY BREEZES WILL BE ON
THE INCREASE SUNDAY AS HIGH PRESSURE BUILDS ACROSS THE GREAT
BASIN. THIS DEVELOPING PATTERN WILL MEAN DRY CONDITIONS BUT
LOCALLY WINDY ALONG THE COLORADO RIVER VALLEY THROUGH MONDAY
EVENING, AND THE WIND ADVISORY CONTINUES TO LOOK GOOD FOR THAT
AREA. BY TUESDAY, THE PATTERN WILL BEGIN TO SHIFT AND NORTHERLY
SURFACE WINDS WILL START TO DIE OFF.
BY NEW YEARS EVE, A LOW PRESSURE SYSTEM LURKING OFF THE BAJA COAST
WILL BEGIN TO LIFT NORTH AND DIRECT A PLUME OF DEEP SUBTROPICAL
MOISTURE INTO THE SOUTHWEST. WHILE PRECIPITABLE WATER ANOMALIES
WILL BE QUITE IMPRESSIVE (ROUGHLY 250-300% OF NORMAL BY NEW YEARS
DAY), DYNAMICS AREN'T ESPECIALLY NOTEWORTHY SO IN GENERAL WE ARE
NOT EXPECTING ESPECIALLY HEAVY RAINFALL. BUT DETAILS REMAIN OUT OF
FOCUS SO STAY TUNED AS THE FORECAST BECOMES MORE CLEAR. GIVEN THE
SUBTROPICAL NATURE OF THE INCOMING AIRMASS, SNOW LEVELS WILL ONCE
AGAIN BE QUITE HIGH, GENERALLY ABOVE 8000 FEET, KEEPING ALL BUT
THE HIGHEST TERRAIN SHUT OUT OF SNOW CHANCES FOR THE START OF THE
NEW YEAR.
AVIATION...FOR HARRY REID...FOR THE 00Z FORECAST PACKAGE
ELEVATED
NORTHEAST WINDS AT 8-10KT WILL CONTINUE INTO THE EARLY EVENING THEN
WILL BACK WESTERLY AND DROP UNDER 8KT FOR THE FIRST PART OF THE
NIGHT. EXPECTING NORTH WINDS WILL PUSH THROUGH THE VALLEY SOMETIME
TONIGHT, WITH THE ARRIVAL TIME AT LAS BETWEEN 05Z-10Z. SPEEDS OVER
10KT ARE LIKELY AND THERE IS A 50% CHANCE FOR GUSTS 15-20KT WITH THE
NORTH WINDS OVERNIGHT. NORTH WINDS WILL CONTINUE INTO SUNDAY WITH
GUSTS TO AROUND 20KT EXPECTED SUNDAY LATE MORNING THROUGH THE
AFTERNOON. WINDS WILL DECREASE SUNDAY EVENING TO UNDER 8KT BUT WILL
REMAIN NORTH THROUGH MUCH OF THE NIGHT. CLEAR SKIES WILL PERSIST
THROUGH TONIGHT THEN VFR FEW-SCT CLOUDS AT 20KFT ARE EXPECTED SUNDAY
AFTERNOON.
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST
CALIFORNIA...FOR THE 00Z FORECAST PACKAGE...A FRONT CURRENTLY DRAPED
ACROSS THE SOUTHERN GREAT BASIN WILL SAG SOUTH THROUGH THE REGION
TONIGHT, WITH BREEZY NORTH WINDS EXPECTED BEHIND THE FRONT. GUST
WINDS IN THE OWENS VALLEY AND THE SOUTHERN GREAT BASIN WILL DECREASE
AROUND SUNSET WHERE THE FRONT HAS ALREADY PASSED. MEANWHILE, THE
FRONT WILL MOVE THROUGH THE REST OF THE REGION TONIGHT THROUGH
SUNDAY MORNING AND TYPICAL LIGHT WINDS WILL BECOME BREEZY OUT OF THE
NORTH. WIND SPEEDS OF 10-15KT WITH GUSTS OF 15-20KT WILL DEVELOP
TONIGHT AS IT MOVES THOUGH. ON SUNDAY, EXPECTED CONTINUED NORTH
WINDS IN MANY LOCATIONS WITH WIDESPREAD GUSTS OF 15-20KT WITH HIGHER
GUSTS OF 25-35KT IN THE COLORADO RIVER VALLEY. VFR CONDITIONS WITH
CLEAR SKIES OVERNIGHT AND SUNDAY MORNING GIVING WAY TO AFTERNOON FEW-
SCT CUMULUS AROUND 20KFT.
SPOTTER INFORMATION STATEMENT
SPOTTERS ARE ENCOURAGED TO REPORT
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING
PROCEDURES.
DISCUSSION...OUTLER
AVIATION...NICKERSON
FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:
HTTPS://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page