432
FXUS65 KVEF 232254
AFDVEF
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
354 PM PDT THU JUL 23 2026
KEY MESSAGES
* DANGEROUS TEMPERATURES WILL CONTINUE THROUGH MONDAY ACROSS THE
MOJAVE DESERT.
* MONSOONAL MOISTURE WILL REMAIN IN PLACE OVER THE REGION, BUT DAILY
STORM COVERAGE WILL DECREASE AS WE HEAD INTO THE WEEKEND.
DISCUSSION
THROUGH THURSDAY.
BUILDING HEAT WILL BE THE BIGGEST CONCERN OVER THE NEXT FEW DAYS AS
HIGH PRESSURE STRENGTHENS OVER THE DESERT SOUTHWEST. TEMPERATURES
WILL CONTINUE TO RISE OVER SEVERAL DAYS, LIKELY PEAKING THIS WEEKEND
BEFORE SLOWLY DECREASING NEXT WEEK. WE WILL START TO SEE MORE
WIDESPREAD MAJOR HEATRISK (LEVEL 3 OF 4) FRIDAY WITH INCREASING
AREAS OF EXTREME HEATRISK (LEVEL 4 OF 4) ACROSS MANY OF THE LOWER
DESERTS OVER THE WEEKEND. ALTHOUGH HIGH TEMPERATURES ARE EXPECTED TO
BE JUST SHY OF RECORDS (AROUND 5 TO 8 DEGREES ABOVE NORMAL);
HOWEVER, OVERNIGHT LOW TEMPERATURES WILL REMAIN QUITE WARM WITH LOWS
IN LAS VEGAS, LIKELY REMAINING ABOVE 90 DEGREES FOR SEVERAL DAYS.
WITH LINGERING MONSOONAL MOISTURE, THE HEAT WILL MAKE THINGS FEEL
RATHER UNCOMFORTABLE FOR ANYONE OUTDOORS. GIVEN THE THREAT POSED BY
THIS HEAT, AN EXTREME HEAT WARNING IS IN EFFECT FROM TODAY THROUGH
MONDAY EVENING.
ALTHOUGH PWATS WILL STILL REMAIN AROUND 150% OF NORMAL THROUGH THE
WEEKEND, THERE REALLY ISN'T MUCH INSTABILITY TO WORK WITH. THE
GREATEST THREAT OF AFTERNOON THUNDERSTORM ACTIVITY WILL REMAIN OVER
MOHAVE AND LINCOLN COUNTIES (15-30%) WITH PROBABILITIES GENERALLY
LESS THAN 15% FOR STORMS TO DEVELOP OVER THE HIGHER TERRAIN OF CLARK
AND NYE COUNTIES. THE GREATEST THREAT FROM ANY STORM WILL BE GUSTY
OUTFLOW WINDS AND ISOLATED FLASH FLOODING. THUNDERSTORM CHANCES WILL
PERSIST INTO THE MIDDLE PART OF NEXT WEEK, BUT WITH SOME DRYING
OCCURRING OVER THE WESTERN PORTIONS OF THE CWA, THEY WILL MAINLY BE
CONFINED TO THE HIGHER TERRAIN OF MAINLY MOHAVE AND LINCOLN COUNTIES.
AVIATION...FOR HARRY REID...FOR THE 00Z FORECAST PACKAGE
LIGHT WINDS WITH INFREQUENT GUSTS CONTINUE WITH PREVAILING SPEEDS
GENERALLY 7 KNOTS OR LESS. TEMPERATURES LOOK TO STAY ABOVE 100
DEGREES THROUGH 05Z. NO THUNDERSTORMS THROUGH THE EVENING AND
OVERNIGHT, THOUGH SOME LOW PROBABILITIES WILL RETURN FRIDAY
AFTERNOON, BUT LOOK SPOTTY IF ANY FORM. FRIDAY AFTERNOON OFFERS
LIGHT WINDS WITH GUSTS AROUND 14 KTS FROM THE SOUTH, SOUTHWEST.
THESE WINDS REDUCE AND GUST CUT OFF THAT EVENING.
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST
CALIFORNIA...FOR THE 00Z FORECAST PACKAGE...WIDESPREAD LIGHT WINDS
LAST THROUGH THE NIGHT. THE EXCEPTIONS WILL BE ACROSS THE OWENS
VALLEY WHERE SOUTHERLY WINDS GUSTING AROUND 20 KNOTS ARE EXPECTED
THROUGH THE EVENING WITH EASTERN SAN BERNARDINO CO (KDAG) SEEING
BREEZY WEST-SOUTHWEST WINDS INTO THE NIGHT. ADDITIONAL CONCERNS
INCLUDE WITH POCKETS OF SMOKE IN THE SIERRA REGION NEAR THE ROCK
FIRE, OTHERWISE NO MAJOR VISIBILITY RESTRICTIONS ARE EXPECTED.
SPOTTER INFORMATION STATEMENT
SPOTTERS ARE ENCOURAGED TO REPORT
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING
PROCEDURES.
DISCUSSION...GORELOW
AVIATION...MURDOCK
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