118  
FXUS65 KVEF 082250  
AFDVEF  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE LAS VEGAS NV  
350 PM PDT THU MAY 8 2025  
   
SYNOPSIS  
BUILDING HIGH PRESSURE WILL BRING INCREASING  
TEMPERATURES AND DRY CONDITIONS THROUGH THE END OF THE WEEK. THE  
NEXT SYSTEM ARRIVES EARLY NEXT WEEK, FEATURING COOLER TEMPERATURES  
AND INCREASING WINDS.  
 
 
   
DISCUSSION  
THROUGH NEXT THURSDAY.  
 
TEMPERATURES WILL CONTINUE TO HEAT UP AS WE HEAD INTO THE WEEKEND  
THANKS TO THE UPPER-LEVEL RIDGE BUILDING OVER THE DESERT SOUTHWEST.  
AS THESE TEMPERATURES RISE, WE WILL ALSO SEE HEATRISK RISE.  
WIDESPREAD MINOR HEATRISK (LEVEL 1 OF 4) IS EXPECTED ACROSS MOST OF  
OUR FORECAST AREA TODAY AND TOMORROW WITH MODERATE HEATRISK (LEVEL 2  
OF 4) IN DEATH VALLEY, THE COLORADO RIVER VALLEY, AND THE LOWER  
ELEVATIONS OF SAN BERNARDINO COUNTY. MODERATE HEATRISK WILL AFFECT  
HEAT SENSITIVE INDIVIDUALS (E.G., THE ELDERLY, INFANTS AND TODDLERS,  
INDIVIDUALS WITH CHRONIC ILLNESSES, ETC.), AS WELL AS THOSE WITHOUT  
ACCESS TO ADEQUATE COOLING AND/OR HYDRATION. HEATRISK WILL CONTINUE  
TO INCREASE ON SATURDAY WITH MAJOR HEATRISK (LEVEL 3 OF 4) IN DEATH  
VALLEY AND THE COLORADO RIVER VALLEY, AND MODERATE HEATRISK  
EXPANDING TO THE LOWER ELEVATIONS OF SOUTHERN NEVADA, SOUTHEAST  
CALIFORNIA, AND NORTHWEST ARIZONA. MAJOR HEATRISK WILL AFFECT ANYONE  
WITHOUT EFFECTIVE COOLING OR ADEQUATE HYDRATION, SO IF YOU HAVE  
OUTDOOR PLANS ON SATURDAY, MAKE SURE TO TAKE EXTRA WATER/SPORTS  
DRINKS AND TAKE STEPS TO PROTECT YOURSELF FROM THE SUN (E.G.,  
SUNSCREEN, SUN GLASSES, HATS, ETC.). OUTSIDE OF THE HEAT, WEATHER  
THROUGH SATURDAY WILL BE DRY AND MILD WITH MOSTLY SUNNY SKIES.  
 
TEMPERATURES WILL BEGIN TO DROP AND WIDESPREAD GUSTY WINDS WILL  
BEGIN TO PICK UP ON SUNDAY AS A TROUGH PUSHES INTO THE PACIFIC  
NORTHWEST. THIS LOW PRESSURE SYSTEM WILL DIG SOUTH EARLY NEXT WEEK,  
PROLONGING THE GUSTY WINDS AND KNOCKING TEMPERATURES DOWN TO AROUND  
8 TO 12 DEGREES BELOW NORMAL BY TUESDAY. GIVEN THE DRY NATURE OF  
THIS SYSTEM, PRECIPITATION CHANCES WILL BE MINIMAL AND WILL BE  
LIMITED TO THE SOUTHERN GREAT BASIN. THE UPPER-LEVEL PATTERN WILL  
REMAIN TROUGH-Y THROUGH LATE NEXT WEEK WITH 500 MB HEIGHTS SLOWLY  
RISING, ALLOWING FOR TEMPERATURES TO RECOVER TO NEAR NORMAL DURING  
THE SECOND HALF OF THE WEEK.  
 
 
   
AVIATION...FOR HARRY REID...FOR THE 00Z FORECAST PACKAGE  
LIGHT  
WINDS FOLLOWING TYPICAL WIND PATTERNS ARE EXPECTED THROUGH FRIDAY  
MORNING. HIGH PROBABILITY (90%+) THAT WINDS WILL REMAIN UNDER 8KT  
THROUGH THE PERIOD. DRY CONDITIONS WILL PERSIST WITH A FEW CLOUDS  
AROUND 12K FEET OVER THE MOUNTAINS DURING THE AFTERNOON PERIOD  
THROUGH FRIDAY.  
 
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST  
CALIFORNIA...FOR THE 00Z FORECAST PACKAGE...LIGHT, DIURNAL WIND  
PATTERN WILL PERSIST FOR MOST LOCATIONS THROUGH FRIDAY. KBIH WILL BE  
THE EXCEPTION WHERE SOUTHEAST WINDS WILL DECREASE THIS EVENING AND  
BECOMING LIGHT NORTHWEST. SOUTHEAST WINDS WILL INCREASE AGAIN AFTER  
18Z WITH WINDS 10-18 KTS. DRY CONDITIONS AND A FEW CLOUDS AROUND 12-  
15K FEET OVER THE HIGHER TERRAIN EXPECTED THROUGH THE TAF PERIOD.  
 
 
   
SPOTTER INFORMATION STATEMENT  
SPOTTERS ARE ENCOURAGED TO REPORT  
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING  
PROCEDURES.  
 
 
 
 
 
DISCUSSION...STESSMAN  
AVIATION...GORELOW  
 
FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:  
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