198
FXUS65 KVEF 240429
AFDVEF
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
929 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 06Z FORECAST
PACKAGE...ANY ISOLATED CONVECTION IN AND AROUND THE VALLEY WILL END
BY 06Z, A DRY NIGHT WITH TYPICAL LIGHT WINDS IS EXPECTED. INCREASING
CONFIDENCE THAT SCATTERED THUNDERSTORMS DEVELOP FRIDAY AFTERNOON IN
AND AROUND THE VALLEY. LOW CONFIDENCE IN DIRECT IMPACTS BUT ANY
STORMS COULD PRODUCE LIGHTNING, SUDDEN OUTFLOW WINDS, HEAVY RAIN,
AND CIGS BELOW 10KFT. OUTSIDE OF CONVECTIVE INFLUENCES, LIGHT WIND
FRIDAY MORNING WITH BECOME SOUTH-SOUTHEAST AFTER 18Z WITH GUSTS UP
TO 20KT. WINDS AND THUNDERSTORMS WILL DIMINISH AFTER SUNSET AS LIGHT
SOUTH TO SOUTHWEST SET UP FOR FRIDAY NIGHT INTO SATURDAY MORNING.
VFR SKIES WITH CIGS AT OR ABOVE 10KFT. TEMPERATURES WILL EXCEED 100
DEGREES BETWEEN 19Z TO 05Z.
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST
CALIFORNIA...FOR THE 06Z FORECAST PACKAGE... ISOLATED CONVECTION IN
SOUTHERN NEVADA AND WESTERN ARIZONA WILL QUICKLY WANE AROUND 06Z.
LIGHT WINDS FOLLOWING TYPICAL OVERNIGHT PATTERNS ARE EXPECTED
TONIGHT INTO FRIDAY MORNING. WINDS FRIDAY OUTSIDE OF CONVECTIVE
INFLUENCES WILL BE SIMILAR TO TODAY, INCREASING OUT OF THE SOUTH TO
SOUTHEAST WITH GUSTS 15-20KT IN THE AFTERNOON. KDAG WILL BE LIGHT
THROUGH THE AFTERNOON BEFORE WESTERLY GUSTS DEVELOP AROUND 00Z.
SCATTERED THUNDERSTORMS WILL DEVELOP FRIDAY AFTERNOON ACROSS
SOUTHERN NEVADA AND WESTERN ARIZONA, AS WELL AS ALONG THE SIERRA
CREST, MORE NUMEROUS THAN TODAY. STORMS MAY PRODUCE SUDDEN GUSTY
OUTFLOW WINDS, HEAVY RAIN, REDUCED VISIBILITY, AND CIGS BELOW 10KFT.
PRECIPITATION WILL DIMINISH AFTER SUNSET ALONG WITH WINDS AS A QUIET
NIGHT WITH TYPICAL LIGHT WIND PATTERNS SET UP FOR FRIDAY NIGHT.
SPOTTER INFORMATION STATEMENT
SPOTTERS ARE ENCOURAGED TO REPORT
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING
PROCEDURES.
DISCUSSION...GORELOW
AVIATION...NICKERSON
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