140
FXUS65 KVEF 070922
AFDVEF
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
222 AM PDT MON SEP 7 2026
KEY MESSAGES
* DRIER CONDITIONS EXPECTED MUCH OF THE WEEK WITH WARMING
TEMPERATURES EXPECTED.
* ELEVATED SOUTH-SOUTHWESTERLY WIND GUSTS EXPECTED ON THURSDAY AND
FRIDAY ACROSS THE REGION.
DISCUSSION
TODAY THROUGH SUNDAY.
DRY CONDITIONS ARE EXPECTED THROUGH MUCH OF THE WEEK AS THE CURRENT
UPPER LEVEL TROUGH LIFTS OUT AND HIGH PRESSURE SETS UP OVER THE
REGION. THIS AREA OF HIGH PRESSURE WILL CENTER OVERHEAD, WHICH IS
TOO FAR WEST FOR MONSOONAL MOISTURE TO RETURN TO THE REGION, WHICH
WILL LIMIT THUNDERSTORM CHANCES THIS WEEK. ISOLATED SHOWERS AND
THUNDERSTORMS ARE POSSIBLE ON THE SIERRA CREST WEDNESDAY AND
THURSDAY AFTERNOON AS UPSLOPE FLOW SQUEEZES OUT WHAT LITTLE MOISTURE
MAY BE IN THE ATMOSPHERE, BUT LITTLE IS EXPECTED TO MAKE IT OVER THE
RIDGE. WITH BUILDING HEIGHTS ALOFT, TEMPERATURES WILL QUICKLY WARM,
CLIMBING BACK TO ABOVE-NORMAL LEVELS BY WEDNESDAY. THE HEAT WILL
PEAK THURSDAY OR FRIDAY AS HEATRISK REACHES MAJOR IN DESERT VALLEYS.
AFTER THURSDAY, TEMPERATURES SHOULD BEGIN TO MODERATE, FALLING
CLOSER TO NORMAL LEVELS FOR THE WEEKEND, WITH HEATRISK DROPPING TO
MODERATE OR MINOR IN MANY LOCATIONS.
AN UPPER LEVEL TROUGH IS CURRENTLY EXPECTED TO PUSH THROUGH THE
PACIFIC NORTHWEST TOWARD THE END OF THE WEEK. THIS IS CURRENTLY
EXPECTED TO REMAIN TOO FAR NORTH TO PRODUCE PRECIPITATION IN THE
LOCAL AREA. AS THE TROUGH KNOCKS DOWN THE ESTABLISHED RIDGE OVER
OVER THE REGION, THE PRESSURE GRADIENT SHOULD INCREASE AND WILL
RESULT IN GUSTY SOUTH TO SOUTHWEST WINDS. CURRENTLY THE ONLY AREA
WITH OVER A 50% CHANCE FOR POTENTIALLY DAMAGING WINDS IS IN THE
WESTERN MOJAVE DESERT WITH GUSTS UP TO 40 MPH. THE OTHER AREA OF
CONCERN WILL BE THE COLORADO RIVER VALLEY WHERE SOUTHERLY GUSTS AND
BUILDING WAVES COULD IMPACT BOATERS. WITH THIS BEING A LATE-WEEK
SYSTEM, CHANGES TO THE FORECAST ARE LIKELY, SO CHECK BACK IF
PLANNING TO SPEND TIME OUTDOORS.
AVIATION...FOR HARRY REID...FOR THE 12Z FORECAST PACKAGE
EXPECT
WINDS TO FOLLOW GENERALLY DIURNAL PATTERNS TODAY, WITH EAST-
NORTHEAST WINDS AROUND 8 KTS THIS MORNING, FOLLOWED BY GUSTY
SOUTHWESTERLY WINDS IN THE AFTERNOON BETWEEN 20 AND 25 KTS, THEN
SOUTHWESTERLY WINDS AROUND 8 KTS AFTER SUNSET. CIGS WILL CONTINUE TO
IMPROVE THROUGH THE MORNING, THOUGH FEW AOA 25 KFT WILL PERSIST
THROUGH MUCH OF THE TAF PERIOD. TEMPERATURES WILL REMAIN BELOW 100
DEGREES TODAY.
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST
CALIFORNIA...FOR THE 12Z FORECAST PACKAGE...EXPECT BREEZY (20-30
KTS) SOUTH-SOUTHWESTERLY WINDS IN THE LAS VEGAS VALLEY TODAY...
SOUTH-SOUTHEASTERLY WINDS AT KBIH... AND WEST WINDS AT KDAG. WINDS
ALONG THE COLORADO RIVER VALLEY WILL GENERALLY REMAIN BELOW 10 KTS
TODAY, WITH NORTH WINDS THIS MORNING / EARLY-AFTERNOON AND
SOUTHWESTERLY WINDS IN THE LATE-AFTERNOON. CIGS WILL CONTINUE TO
IMPROVE THIS MORNING, BUT FEW-SCT AOA 25 KFT WILL PERSIST FOR THE
SOUTHERN HALF OF THE REGION THROUGH THE TAF PERIOD.
SPOTTER INFORMATION STATEMENT
SPOTTERS ARE ENCOURAGED TO REPORT
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING
PROCEDURES.
DISCUSSION...NICKERSON
AVIATION...SOULAT
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