558
FXUS65 KREV 240905
AFDREV
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RENO NV
105 AM PST MON NOV 24 2025
KEY MESSAGES
* HIGH PRESSURE THIS WEEK WILL PROVIDE DRY CONDITIONS, LIGHT
WINDS, AND A WARMING TREND THROUGH THANKSGIVING DAY.
* VALLEY INVERSIONS WILL STRENGTHEN, LEADING TO POTENTIAL
REDUCTIONS IN AIR QUALITY FOR LOWER VALLEYS THIS WEEK.
* INCREASING LIKELIHOOD FOR A COOLER AND BREEZIER PATTERN NEXT
WEEKEND WITH A 20-30% CHANCE FOR PRECIPITATION.
DISCUSSION
FREEZING FOG WILL BE POSSIBLE AGAIN THIS MORNING THROUGH THE
MARTIS VALLEY AND TRUCKEE AREA ALONG WITH A 20-30% CHANCE OF
PATCHY FOG IN MORE RURAL W.NEVADA AREAS NEAR LOVELOCK AND FALLON.
FOG MAY BE LESS WIDESPREAD THAN YESTERDAY DUE TO INCREASED WINDS
ALOFT PROMOTING BETTER MIXING IN SOME AREAS.
THE WEATHER THROUGH THE UPCOMING HOLIDAY WEEK WILL REMAIN
RELATIVELY QUIET AS A DIRTY RIDGE OF HIGH PRESSURE BUILDS OVER
THE REGION. THIS SETUP WILL PROVIDE DRY CONDITIONS, PERIODS OF
HIGH CLOUDS, LIGHT WINDS, GRADUALLY WARMING TEMPERATURES, AND
STRENGTHENING VALLEY INVERSIONS.
BY THANKSGIVING, HIGH PRESSURE WILL CONTINUE TO STRENGTHEN,
REINFORCING VALLEY INVERSIONS AND POTENTIALLY REDUCING AIR
QUALITY IN LOWER VALLEYS AS WIND AND MIXING REMAIN MINIMAL.
TEMPERATURES WILL CLIMB STEADILY, WITH DAYTIME HIGHS REACHING
NEAR 10 DEGREES ABOVE SEASON AVERAGES, WITH HIGHS IN THE LOWER 60S
ACROSS W.NEVADA AND MID-UPPER 50S FOR SIERRA VALLEYS BY THURSDAY.
BY THIS WEEKEND, FORECAST CONFIDENCE DECREASES AS A BLOCKING
PATTERN DEVELOPS OVER THE E.PACFIC. THIS SETUP COULD ALLOW COLDER
SHORTWAVE TROUGHS TO DROP IN FROM THE NORTHWEST AND DEEPEN ACROSS
THE WESTERN U.S. WHILE ENSEMBLE GUIDANCE VARIES CONSIDERABLY ON
TIMING, CONFIDENCE IS GROWING IN A COOLER, BREEZIER PATTERN WITH
AT LEAST SOME POTENTIAL (20-30% CHANCES) FOR PRECIPITATION NEXT
WEEK. FUENTES
AVIATION
GENERALLY VFR CONDITIONS ARE EXPECTED, EXCEPT FOR AREAS OF FZFG
AT KTRK THROUGH 18Z. 20-30% CHANCE FOR PATCHY FZFG AREA POSSIBLE
FOR KMEV, KNFL, AND KLOL THIS MORNING. AREAS OF LIGHT TO MODERATE
TURBULENCE WILL BE POSSIBLE TODAY EAST OF THE SIERRA CREST AS
WIND GUSTS ALOFT (FL100), REACH BETWEEN 30-40 KT. FUENTES
REV WATCHES/WARNINGS/ADVISORIES
NV...NONE.
CA...NONE.
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