566
FXUS65 KVEF 071948
AFDVEF
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
1248 PM PDT MON JUL 7 2025
KEY MESSAGES
* DRY CONDITIONS AND STRONG WINDS WILL RESULT IN CRITICAL FIRE
WEATHER CONDITIONS ACROSS PORTIONS OF SOUTHERN NEVADA THE REST OF
TODAY AND TOMORROW.
* TEMPERATURES WILL CONTINUE TO INCREASE EACH DAY THROUGH MID-WEEK
AS HIGH PRESSURE BUILDS OVER THE REGION. AN EXTREME HEAT WATCH
IS IN EFFECT FOR SOUTHERN MOHAVE COUNTY AND THE COLORADO RIVER
VALLEY ON WEDNESDAY AS TEMPERATURES PEAK.
DISCUSSION
THROUGH THE WEEKEND.
BREEZY SOUTHERLY WINDS, LOW HUMIDITY, AND DRY FUELS WILL RESULT IN
CRITICAL FIRE WEATHER CONDITIONS ACROSS ESMERALDA AND NYE COUNTIES
TODAY AND TOMORROW. AS SUCH, A RED FLAG WARNING IS IN EFFECT FOR
ESMERALDA COUNTY AND PORTIONS OF NYE COUNTY TODAY AND TOMORROW. FOR
MORE DETAILS, SEE THE FIRE WEATHER SECTION BELOW.
HOTTER THAN NORMAL TEMPERATURES WILL CONTINUE AS RIDGING BUILDS OVER
THE REGION, ALLOWING FOR TEMPERATURES TO CONTINUE TO INCREASE EACH
DAY THROUGH MID-WEEK. AN EXTREME HEAT WATCH CONTINUES FOR SOUTHERN
MOHAVE COUNTY AND THE COLORADO RIVER VALLEY ON WEDNESDAY DUE TO
HOTTER THAN NORMAL TEMPERATURES RESULTING IN MAJOR HEATRISK (LEVEL 3
OF 4). ON WEDNESDAY, TEMPERATURES IN THE LOWER COLORADO RIVER VALLEY
WILL TOP OUT BETWEEN 110 AND 120 DEGREES WHILE TEMPERATURES IN THE
LOWER ELEVATIONS OF SOUTHERN MOHAVE COUNTY (E.G., WIKIEUP, YUCCA,
GOLDEN VALLEY, ETC.) WILL TOP OUT AROUND 110 TO 115 DEGREES.
TEMPERATURES WILL DROP A DEGREE OR TWO FROM WEDNESDAY TO THURSDAY AS
A SHORTWAVE TROUGH ROLLS THROUGH THE GREAT BASIN AND KNOCKS 500 MB
HEIGHTS DOWN A BIT. RIDGING WILL REBOUND ACROSS THE SOUTHWESTERN US
LATE THIS WEEK, WHICH WILL ALLOW FOR TEMPERATURES TO HEAT BACK UP AS
WE HEAD INTO THE WEEKEND.
FIRE WEATHER
SOUTHERLY-TO-SOUTHWESTERLY WINDS WILL CONTINUE
ACROSS THE REGION THIS AFTERNOON AND AGAIN TOMORROW AS WE FIND
OURSELVES SANDWICHED BETWEEN A CUT-OFF LOW PRESSURE SYSTEM TO OUR
WEST, OFF THE COAST OF CALIFORNIA, AND BUILDING HIGH PRESSURE TO OUR
EAST. 20 TO 25 MPH SUSTAINED WINDS WITH GUSTS UP TO 30-35 MPH WILL
PICK UP EACH AFTERNOON ACROSS ESMERALDA AND NYE COUNTIES. THESE
WINDS COMBINED WITH AFTERNOON RELATIVE HUMIDITIES BOTTOMING OUT IN
THE SINGLE DIGITS AND CRITICALLY DRY FUELS WILL RESULT IN CRITICAL
FIRE WEATHER CONDITIONS ACROSS PORTIONS OF SOUTHERN NEVADA. A RED
FLAG WARNING IS IN EFFECT FOR NEVADA FIRE WEATHER ZONE 460 TODAY AND
ZONES 460 AND 462 TOMORROW. RECREATION WITH SPARKS AND OUTDOOR
BURNING IS NOT RECOMMENDED AS ANY FIRES THAT START WILL DEVELOP AND
SPREAD QUICKLY. THERE MAY BE SOME NEED TO CONTINUE ADDITIONAL RED
FLAG WARNINGS ON WEDNESDAY BUT WINDS MAY NOT QUITE REACH CRITERIA.
WE WILL ASSESS FURTHER OVERNIGHT.
AVIATION...FOR HARRY REID...FOR THE 18Z FORECAST PACKAGE
LIGHT
EASTERLY SHOULD BECOME SOUTHERLY IN THE AFTERNOON WITH GUSTS OF 15
TO 20 KNOTS, ALTHOUGH THE EXACT TIMING OF THE WIND SHIFT IS MORE
UNCERTAIN. AROUND SUNSET, WINDS SHOULD GO BACK TO THE TYPICAL SOUTH
TO SOUTHWEST DRAINAGE DIRECTION. VFR CONDITIONS UNDER MOSTLY CLEAR
SKIES. TEMPERATURES WILL EXCEED 100 DEGREES BETWEEN 20Z AND 04Z.
SIMILAR WINDS CONDITIONS ARE EXPECTED ON TUESDAY.
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST
CALIFORNIA...FOR THE 18Z FORECAST PACKAGE...WINDS FOLLOW TYPICAL
DIURNAL PATTERNS TODAY. EXPECT BREEZY SOUTH TO SOUTHWEST WINDS TO
INCREASE AT MOST SITES THIS AFTERNOON, WITH THE STRONGEST GUSTS OVER
THE SIERRA CREST AND THE MOUNTAINS OF DEATH VALLEY, DECREASING
AROUND SUNSET. VFR CONDITIONS PREVAIL UNDER MAINLY CLEAR SKIES.
SIMILAR WIND CONDITIONS EXPECTED ON TUESDAY BUT SLIGHTLY STRONGER
ACROSS INYO, ESMERALDA, NYE AND LINCOLN COUNTIES.
SPOTTER INFORMATION STATEMENT
SPOTTERS ARE ENCOURAGED TO REPORT
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING
PROCEDURES.
DISCUSSION/FIRE WEATHER...CZYZYK
AVIATION...CZYYZK
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