239
FXUS65 KVEF 262116
AFDVEF
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
216 PM PDT SAT JUL 26 2025
KEY MESSAGES
* ANOTHER COUPLE DAYS OF BELOW-NORMAL TEMPERATURES BEFORE THE REGION
WARMS UP THROUGH THE WEEK.
* MONSOONAL MOISTURE INCREASES IN ARIZONA MID-TO-LATE WEEK, WITH
BEST CHANCES OF PRECIPITATION ACROSS MOHAVE COUNTY.
DISCUSSION
TODAY THROUGH SATURDAY.
DRY SOUTHWEST FLOW ALOFT WILL CONTINUE THROUGH THE REMAINDER OF THE
WEEKEND INTO THE START OF NEXT WEEK, RESULTING IN PERSISTENT BREEZY
AFTERNOONS. IN ADDITION TO SOUTHWEST BREEZES BETWEEN 15 AND 25 MPH,
THE TROUGH ACROSS THE WESTERN CONUS HAS ALLOWED HEIGHTS ALOFT TO
DROP, RESULTING IN BELOW-NORMAL TEMPERATURES. THIS TROUGH WILL
REMAIN SITUATED ACROSS THE WESTERN CONUS, BUT A RIDGE OF HIGH
PRESSURE ACROSS THE SOUTHERN CONUS WILL BEGIN TO RETROGRADE WESTWARD
THROUGH THE WORK WEEK. THE RIDGE'S WESTWARD PROGRESSION WILL ALLOW
HEIGHTS TO RISE OVER THE DESERT SOUTHWEST, RESULTING IN AT-OR-ABOVE
NORMAL TEMPERATURES RETURNING TO THE REGION AS SOON AS MONDAY.
THE RETROGRADING OF THIS SOUTHERN CONUS HIGH PRESSURE WILL ALSO
RESULT IN AN INFLUX OF MONSOONAL MOISTURE UP THE COLORADO RIVER
VALLEY. HOWEVER, THE AFOREMENTIONED WESTERN CONUS TROUGH WILL
CONTEND WITH THE RIDGE'S WESTWARD PROGRESSION, WORKING TO PREVENT
MOISTURE FROM MAKING IT MUCH FURTHER WEST THAN ARIZONA. PWATS WILL
INCREASE TO AROUND 0.50" ACROSS OUR FAR SOUTHERN ZONES ON TUESDAY,
SURGING TO AROUND 0.75" ON THURSDAY IN THE LOWER COLORADO RIVER
VALLEY. THIS MOISTURE LINGERS THROUGH FRIDAY BEFORE RAPIDLY
RETREATING. AS A RESULT, SLIGHT POPS (15-30 PERCENT) EXIST FOR
MOHAVE COUNTY TUESDAY THROUGH SATURDAY. OF NOTE, DUE TO THE DRY LOW-
LEVELS AND MODEST MOISTURE FLUX ACROSS NORTHERN ARIZONA, FORECAST
RAINFALL TOTALS REMAIN LESS THAN 0.05" ON ANY GIVEN DAY, MAKING
STRONG GUSTY WIND AND FREQUENT LIGHTNING THE PRIMARY HAZARDS NEXT
WEEK. ELSEWHERE, EXPECT DRY CONDITIONS AND MOSTLY SUNNY SKIES.
AVIATION...FOR HARRY REID...FOR THE 00Z FORECAST PACKAGE
SIMILAR
WINDS EXPECTED TODAY AS THE LAST FEW DAYS, WITH SOUTHERLY WINDS
PICKING UP THROUGH THE AFTERNOON WITH GUSTS AROUND 20 KTS.
DIRECTIONAL VARIABILITY WILL BE SUBSTANTIAL WITH THE HEATING OF THE
DAY, WITH VARIANCE BETWEEN 140 AND 220. WINDS WILL SETTLE INTO THE
SOUTHWEST AFTER SUNSET, WITH LIGHT SPEEDS OVERNIGHT. EXPECT SIMILAR
WINDS ON SUNDAY. TEMPERATURES WILL APPROACH 100 DEGREES BETWEEN 23
AND 01Z.
FOR THE REST OF SOUTHERN NEVADA, NORTHWESTERN ARIZONA AND
SOUTHEASTERN CALIFORNIA...FOR THE 00Z FORECAST PACKAGE...SIMILAR
WINDS EXPECTED TODAY AS THE LAST FEW DAYS, WITH SOUTHERLY WINDS
PICKING UP THROUGH THE AFTERNOON. WINDS WILL INITIALLY FAVOR THE
SOUTHEAST BEFORE SHIFTING SOUTHWEST IN THE LATTER PORTIONS OF THE
AFTERNOON AT LAS VEGAS VALLEY AND COLORADO RIVER VALLEY TAF SITES.
KBIH WILL HAVE A PERSISTENT SOUTHEAST WIND UNTIL SUNSET AND KDAG
WILL SEE INCREASED WEST GUSTS AROUND 23Z. FEW-SCT AOA 25 KFT
THROUGH THE TAF PERIOD.
SPOTTER INFORMATION STATEMENT
SPOTTERS ARE ENCOURAGED TO REPORT
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING
PROCEDURES.
DISCUSSION/AVIATION...SOULAT
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