502
FXUS65 KREV 070825
AFDREV
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RENO NV
125 AM PDT FRI AUG 7 2026
KEY MESSAGES
* SIGNIFICANT HEAT WILL IMPACT OUTDOOR ACTIVITIES EACH AFTERNOON
THROUGH THE WEEKEND, THEN COOLER WEATHER ARRIVES NEXT WEEK.
* A LOW CHANCE OF SHOWERS AND THUNDERSTORMS IS EXPECTED EACH
AFTERNOON IN THE EASTERN SIERRA AND FAR WESTERN NEVADA.
* LIGHT HAZE FROM REGIONAL WILDFIRES LINGERS INTO THE WEEKEND WITH
INCREASING SMOKE NEAR THE OREGON BORDER ON SATURDAY.
DISCUSSION
STRONG WESTERN RIDGING WILL EXTEND OUR ONGOING HEATWAVE THROUGH THE
WEEKEND, RENEWING 90-DEGREE AND TRIPLE DIGIT HIGHS (AWAY FROM HIGHER
SIERRA ELEVATIONS) EACH DAY THROUGH SUNDAY. TEMPERATURES WILL ONLY
FALL TO THE MID 60S AND LOW 70S EACH NIGHT THROUGH SUNDAY ACROSS
WESTERN NEVADA VALLEYS, PROVIDING LITTLE TO NO RELIEF FROM THE HEAT
AFTER THE SUN GOES DOWN. MOREOVER, CLOUD DEBRIS FROM AFTERNOON
SHOWERS/STORMS MAY LEAD TO SLIGHTLY WARMER NIGHTTIME LOWS, FURTHER
COMPOUNDING HEAT IMPACTS. MAKE YOUR WEEKEND PLANS ACCORDINGLY, BE
SURE TO TAKE YOUR HEAT SAFETY PRECAUTIONS IF YOUR PLANS DO TAKE YOU
OUTDOORS DURING THE DAY. HIGH PRESSURE FINALLY WEAKENS EARLY NEXT
WEEK, PROVIDING A MUCH NEEDED COOLING TREND THAT LOWERS TEMPERATURES
CLOSER TO SEASONAL AVERAGES FOR MUCH OF NEXT WEEK.
MOISTURE ADVECTING NORTHWARD INTO THE REGION, COUPLED
WITH OUR CONTINUED HEAT, WILL SUPPORT A LOW CHANCE (10-20%) OF
SHOWERS AND ISOLATED THUNDERSTORMS THIS AFTERNOON FROM THE TAHOE
BASIN SOUTHWARD AND ALONG THE SIERRA FRONT. FORECAST SOUNDINGS
REVEAL A DEEP, DRY SUBCLOUD LAYER BENEATH THIS MOISTURE, SUGGESTING
THAT STRONG OUTFLOW WINDS OF 40-50 MPH WILL BE THE MAIN HAZARD. LOW
CHANCES RETURN TO A SIMILAR AREA WITH THE ADDITION OF LASSEN/N
WASHOE COUNTY, BUT A MORE PRONOUNCED ZEPHYR BREEZE DECREASES THE
LIKELIHOOD OF SHOWERS AND STORMS AROUND THE TAHOE-RENO AREA. DAILY
CHANCES OF SHOWERS AND STORMS CONTINUES EARLY NEXT WEEK, FAVORING
AREAS SOUTH OF US-50.
OTHERWISE, WINDS WILL BECOME BREEZY EACH AFTERNOON THIS WEEKEND INTO
EARLY NEXT WEEK, WHICH MAY POSE MINOR FIRE AND RECREATION IMPACTS.
LIGHT HAZE FROM REGIONAL WILDFIRES WILL CONTINUE TO LINGER, ALTHOUGH
A WEAK FRONTAL PASSAGE IS SLATED TO INCREASE SMOKE/HAZE
CONCENTRATION ACROSS AREAS NEAR THE OREGON BORDER ON SATURDAY.
-SALAS
AVIATION
THE PRIMARY WEATHER CONCERN TODAY IS A LOW CHANCE (10-20%) OF
SHOWERS AND ISOLATED THUNDERSTORMS AT ALL MAIN TERMINALS.
THUNDERSTORM IMPACTS ARE MOST LIKELY AT KMMH-KBAN-KTVL WITH HIGHER
UNCERTAINTY OF POTENTIAL IMPACTS AT KTRK-KRNO-KCXP-KMEV. EXPECT
STRONG OUTFLOW GUSTS UP TO 45 KTS, OCCASIONAL LIGHTNING, AND
MOUNTAIN OBSCURATION TO ACCOMPANY THUNDERSTORMS. OTHERWISE,
WIDESPREAD VFR CONDITIONS AND TYPICAL AFTERNOON BREEZES PREVAIL
TODAY.
-SALAS
REV WATCHES/WARNINGS/ADVISORIES
NV...HEAT ADVISORY UNTIL 8 AM PDT MONDAY NVZ001-003-005.
HEAT ADVISORY UNTIL 8 AM PDT THIS MORNING NVZ004.
EXTREME HEAT WARNING FROM 8 AM THIS MORNING TO 8 AM PDT MONDAY
NVZ004.
CA...HEAT ADVISORY UNTIL 8 AM PDT MONDAY CAZ070-071.
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