813  
FXUS65 KVEF 230504  
AFDVEF  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE LAS VEGAS NV  
1004 PM PDT WED OCT 22 2025  
   
KEY MESSAGES  
 
* A LOW PRESSURE SYSTEM MOVING ACROSS THE AREA TODAY WILL BRING  
COOLER TEMPERATURES AND A SLIGHT CHANCE OF PRECIPITATION TO THE  
SOUTHERN SIERRA AND GREAT BASIN.  
 
* AFTER A BRIEF LULL THURSDAY AND FRIDAY, ANOTHER TROUGH OF LOW  
PRESSURE WILL MOVE THROUGH THE WESTERN U.S. OVER THE WEEKEND,  
BRINGING COOLER CONDITIONS AND BREEZY WINDS TO THE REGION.  
 
 
   
DISCUSSION  
THROUGH TUESDAY.  
 
ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE ACROSS  
THE SOUTHERN GREAT BASIN AND INYO COUNTY THROUGH THE AFTERNOON AND  
INTO THE EVENING HOURS AS THE LOW PRESSURE SYSTEM OVER SOUTHERN  
CALIFORNIA CONTINUES TO PUSH EAST. MINIMAL PRECIPITATION IMPACTS ARE  
EXPECTED, WITH PRECIPITATION TOTALS RANGING FROM SPRINKLES TO A  
TENTH OF AN INCH FOR MOST OF THE AREA. THE EXCEPTION TO THIS WILL BE  
THE EASTERN SIERRA AND HIGHER TERRAIN OF NYE AND ESMERALDA COUNTIES  
WHERE UP TO A QUARTER INCH OF LIQUID PRECIPITATION WILL BE POSSIBLE.  
THIS LOW PRESSURE SYSTEM WILL CONTINUE TO MOVE THROUGH OVERNIGHT,  
WITH PRECIPITATION CHANCES SHIFTING TO LINCOLN COUNTY AND NORTHERN  
MOHAVE COUNTY AS WE FIND OURSELVES ON THE BACK SIDE OF THE LOW  
OVERNIGHT INTO EARLY TOMORROW MORNING. IN ADDITION TO PRECIPITATION,  
THIS LOW WILL BRING SLIGHTLY COOLER TEMPERATURES TO THE REGION WITH  
TODAY'S TEMPERATURES IN THE NORTHWESTERN PORTIONS OF OUR FORECAST  
AREA TOPPING OUT AROUND 5 TO 8 DEGREES COOLER THAN YESTERDAY. AS THE  
LOW CONTINUES TO PUSH EAST OVERNIGHT THE EASTERN PORTIONS OF OUR  
FORECAST AREA WILL SEE TEMPERATURES COOL AROUND 3 TO 6 DEGREES FROM  
TODAY TO TOMORROW.  
 
ONCE THIS LOW PRESSURE SYSTEM MOVES OUT, WE WILL EXPERIENCE A BRIEF  
LULL IN TERMS OF WEATHER AS WE HEAD INTO THE WEEKEND. OVER THE  
WEEKEND AN UPPER-LEVEL TROUGH WILL PUSH INTO THE PACIFIC NORTHWEST  
AND MOVE THROUGH THE GREAT BASIN REGION. WINDS CONTINUE TO LOOK TO  
BE THE MOST IMPACTFUL WEATHER FROM THIS SYSTEM. HOWEVER, THE  
MAGNITUDE OF THESE IMPACTS CONTINUES TO DECREASE AS THIS TROUGH  
TRENDS FURTHER NORTH. GUSTY SOUTHWESTERLY WINDS ARE STILL  
EXPECTED OVER THE WEEKEND WITH THE STRONGEST WINDS IN THE EASTERN  
SIERRA AND WESTERN MOJAVE DESERT, BUT IT DOES NOT LIKE WIDESPREAD  
WIND ADVISORIES FOR GUSTS OVER 40 MPH WILL BE NECESSARY ACROSS OUR  
FORECAST AREA. AS THIS SYSTEM CLEARS OUT EARLY NEXT WEEK, WE WILL  
FIND OURSELVES UNDER DRY WESTERLY-TO-NORTHWESTERLY FLOW ALOFT,  
WHICH WILL ALLOW FOR DRY AND MILD WEATHER AS WE HEAD INTO THE LAST  
WEEK OF OCTOBER.  
 
 
   
AVIATION...FOR HARRY REID  
FOR THE 06Z FORECAST  
PACKAGE...SOUTHWEST WINDS WILL CONTINUE THROUGH THE NIGHT UNTIL  
SOMETIME EARLY THURSDAY MORNING WHEN WINDS WILL BECOME NORTHWEST.  
THIS WIND SHIFT SHOULD OCCUR BETWEEN 10Z-14Z. WINDS WILL FAVOR A  
NORTHWESTERLY-TO- NORTHEASTERLY DIRECTION THROUGH THE DAY THURSDAY,  
EVENTUALLY BECOMING LIGHT AND VARIABLE IN THE AFTERNOON. ISOLATED  
SHOWERS AND THUNDERSTORMS WILL PUSH THROUGH CLARK COUNTY TONIGHT,  
POTENTIALLY IMPACTING THE VALLEY TERMINALS BETWEEN 08Z-13Z. ANY  
CONVECTION COULD BRING LIGHTNING, SMALL HAIL, LIGHT TO MODERATE  
RAIN, AND SUDDEN GUSTY WINDS. AFTER SHOWERS AND THUNDERSTORMS MOVE  
AWAY THURSDAY MORNING, A DRY FORECAST IS EXPECTED THE REST OF THE  
TAF PERIOD. FEW TO SCT CLOUDS AOA 12KFT AGL WILL CONTINUE TO FILTER  
THROUGH THE AREA THROUGH TOMORROW AFTERNOON.  
 
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST  
CALIFORNIA...FOR THE 06Z FORECAST PACKAGE...ISOLATED TO SCATTERED  
SHOWERS AND THUNDERSTORMS WILL CONTINUE ACROSS THE SOUTHERN GREAT  
BASIN THROUGH OVERNIGHT, MAINLY IN LINCOLN AND CLARK COUNTIES BEFORE  
SHIFT EAST INTO SOUTHWEST UTAH THURSDAY MORNING. TEMPORARY  
VISIBILITY REDUCTIONS, LIGHTNING, RAIN, AND VARIABLE GUSTY WINDS  
WILL BE POSSIBLE WITH THESE SHOWERS AND THUNDERSTORMS.  
ON THURSDAY, SHOWERS AND THUNDERSTORMS SHOULD BE MORE ISOLATED THAN  
TODAY AND MOVING INTO UTAH AND NORTHERN ARIZONA. WINDS TONIGHT  
SHOULD GENERALLY FOLLOW TYPICAL WIND PATTERNS AND REMAIN UNDER 10KT  
UNTIL WINDS SWING NORTH AROUND 10KT THROUGH THE MORNING AS A FRONT  
PUSHES THROUGH SOUTHERN NEVADA AND THE COLORADO RIVER VALLEY. THE  
STRONGEST WINDS WILL BE IN THE MORNING BEFORE DIMINISHING THURSDAY  
AFTERNOON.  
 
 
   
SPOTTER INFORMATION STATEMENT  
SPOTTERS ARE ENCOURAGED TO REPORT  
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING  
PROCEDURES.  
 
 
 
 
 
DISCUSSION...STESSMAN  
AVIATION...NICKERSON  
 
FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:  
HTTPS://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER  
CLICK HERE TO GO TO PREVIOUS BULLETINS.
The Nexlab NV Page
The Nexlab AZ Page
The Nexlab CA Page
Main Text Page