777
FXUS65 KREV 312030
AFDREV
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RENO NV
130 PM PDT FRI JUL 31 2026
KEY MESSAGES
* HOT AND DRY CONDITIONS PREVAIL THROUGH NEXT WEEK, WITH TRIPLE
DIGIT HEAT IN LOWER VALLEYS FOR MOST DAYS.
* AREAS OF HAZE AND SMOKE FROM CURRENT ACTIVE FIRES COULD REDUCE
AIR QUALITY AT TIMES IN PARTS OF FAR NORTHWEST AND WEST CENTRAL
NV, WITH PATCHY SMOKE ALSO NEAR AND EAST OF THE ELEPHANT FIRE.
* TYPICAL AFTERNOON WINDS ARE EXPECTED EACH DAY, PRODUCING SHORT
PERIODS OF ELEVATED FIRE WEATHER CONCERNS IN ISOLATED AREAS.
DISCUSSION
THE FIRST DAY OF MORE WIDESPREAD TRIPLE DIGIT HEAT IN LOWER
ELEVATIONS ARRIVES THIS AFTERNOON AND PEAKS SATURDAY. HEAT
ADVISORIES CONTINUE FOR PORTIONS OF WEST CENTRAL NV ESPECIALLY
ALONG PARTS OF US-95 AND US-50 WHERE LOW TEMPERATURES AREN'T AS
COOL (UPPER 60S-LOWER 70S). WHILE FAR WESTERN NV ISN'T QUITE AT
HEAT ADVISORY LEVELS DUE TO COOLER OVERNIGHT LOWS IN THE MID
50S-LOWER 60S, RENO'S CURRENT RECORD HIGHS OF 103 FOR TODAY AND
SATURDAY ARE WITHIN REACH. FOR SIERRA COMMUNITIES, HIGHS AROUND 90
DEGREES PREVAIL THROUGH THE UPCOMING WEEK.
TEMPERATURES IN LOWER ELEVATIONS EASE BACK A BIT SUNDAY AND DIP
BELOW 100 DEGREES IN MOST VALLEYS AS THE HIGH PRESSURE RIDGE NEAR
THE FOUR CORNERS REGION EDGES SOUTHWARD. HOWEVER, TRIPLE DIGIT
HEAT IS POISED TO RETURN FOR THE REMAINDER OF NEXT WEEK FROM
TUESDAY ONWARD, WITH LATEST BLENDED GUIDANCE INDICATING HIGHS
SIMILAR TO SATURDAY'S LEVELS FOR AT LEAST ONE DAY NEXT WEEK. THE
BATTLEGROUND BETWEEN POTENTIAL SHORTWAVE TROUGH PASSAGES ACROSS
THE PACIFIC NW AND THE NORTHWARD EXPANSION OF THE SOUTHWEST US
RIDGE CONTINUES TO FLUCTUATE WITH DAILY GUIDANCE, SO NEXT WEEK'S
TEMPERATURE RANGE STILL SPANS A FEW DEGREES ABOVE OR BELOW THE
CURRENT FORECAST.
THIS ISN'T OUR FIRST PERIOD OF 100 DEGREE TEMPERATURES THIS
SUMMER BUT HEAT SAFETY REMAINS JUST AS IMPORTANT: STAY HYDRATED,
WEAR LIGHTWEIGHT AND LIGHT-COLORED CLOTHING, AND IF OUTDOORS TAKE
FREQUENT BREAKS IN THE SHADE OR AIR CONDITIONING. ALSO REMEMBER TO
LOOK BEFORE YOU LOCK YOUR VEHICLES, MAKING SURE NOT TO LEAVE
CHILDREN OR PETS BEHIND.
AFTERNOON SW-W BREEZES CONTINUE NEAR TYPICAL ZEPHYR-TYPE LEVELS
FOR MOST DAYS THROUGH NEXT WEEK, WITH GUSTS MAINLY NEAR 25 MPH
AND ISOLATED SHORT-DURATION GUSTS TO 30 MPH NEAR AND NORTH OF
I-80. WHEN COMBINED WITH CONTINUED LOW AFTERNOON HUMIDITY AND
POOR OVERNIGHT RECOVERY ESPECIALLY FOR WESTERN NV MIDSLOPES AND
THERMAL BELTS, EXPECT ELEVATED FIRE WEATHER CONCERNS DURING THESE
AFTERNOON BREEZY PERIODS. GIVEN THE WIND PATTERN AND CURRENT FIRE
ACTIVITY, AREAS AFFECTED BY SMOKE AND HAZE AT TIMES THROUGH
SATURDAY INCLUDE FAR EASTERN CHURCHILL COUNTY (FROM THE NEW PASS
FIRE), FAR NORTHWEST NV/SURPRISE VALLEY (FROM FIRES IN OREGON),
AND THE VALLEYS NORTH OF RENO-SPARKS (FROM THE ELEPHANT FIRE).
WEATHER WISE, DRY CONDITIONS WITH MINIMAL CLOUD COVER CONTINUE
FOR THE UPCOMING WEEK. AFTERNOON CUMULUS BUILDUPS ARE PROJECTED TO
RETURN MAINLY SOUTH OF US-50 BY MID-LATE NEXT WEEK, BUT WARM AIR
ALOFT AND ABSENCE OF SUFFICIENT FORCING ARE LIKELY TO LIMIT
VERTICAL GROWTH.
LONGER RANGE OUTLOOKS HINT AT INCREASING MONSOONAL MOISTURE INTO
THE GREAT BASIN NEAR OR AFTER AUGUST 10, BUT WESTERN NV APPEARS TO
BE ON THE FRINGE OR JUST OUTSIDE OF THE MOISTURE SURGE AT THIS
TIME. THESE OUTLOOKS ALSO PROJECT A GRADUAL WEAKENING OF THE RIDGE
WITH LOWER CHANCES OF TRIPLE DIGIT HEAT PERSISTING THROUGH THE
SECOND WEEK OF AUGUST. MJD
AVIATION
* VFR CONDITIONS CONTINUE FOR ALL TERMINALS THROUGH AT LEAST EARLY
NEXT WEEK, WITH DAILY AFTERNOON SW-W WIND GUSTS 20-25 KTS MAINLY
BETWEEN 21Z-04Z. WITH TEMPERATURES PEAKING EACH AFTERNOON
THROUGH SATURDAY, DENSITY ALTITUDE CONCERNS INCREASE FOR THE
WESTERN NV TERMINALS. MJD
REV WATCHES/WARNINGS/ADVISORIES
NV...HEAT ADVISORY UNTIL 8 AM PDT SUNDAY NVZ001-004.
CA...NONE.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page