766
FXUS65 KREV 141936 AAA
AFDREV

Area Forecast Discussion...UPDATED
National Weather Service Reno NV
1236 PM PDT Mon Jul 14 2025

.UPDATE...

Quick update was sent to adjust the timing of the Heat Advisory.
With the latest data showing highs on Tuesday backing down to less
than 100 degrees for northeast CA, northwest and far western NV,
we reduced the duration of the advisory by about 1 day in these
areas, now ending Tuesday morning. An increase in west breezes
Tuesday will also help bring more efficient natural cooling after
sunset.

For the Basin and Range southward to Mineral County, we retained
a similar valid time for the advisory through Wednesday morning
as highs still have a shot of pushing past 100 degrees on Tuesday,
but today will be the more impactful heat day. MJD

&&

.PREVIOUS DISCUSSION... /issued 127 AM PDT Mon Jul 14 2025/

KEY MESSAGES...

* Dangerous heat persists through Tuesday, with widespread
  Moderate to Major HeatRisk across lower areas of western NV and
  northeast CA.

* Higher (15-20%) chance for isolated thunderstorms this
  afternoon, with isolated storm chances continuing each afternoon.

* Hot, dry conditions will marginally subside mid-late week with
  typical southwest to west breezes.

DISCUSSION...

It`s another hot one out there today with highs in the low 100s
and upper 90s across the valleys. Sierra communities will see
highs in the low 90s again today. Overnight lows continue to be
rather warm, bringing little overnight relief, primarily for urban
areas. However, we start to cool down Tuesday as a low drops down
from the Canadian side of the Pacific NW, also bringing better
overnight heat relief. Expect afternoon highs in the mid 90s for
valleys and mid 80s for higher elevations though the end of this
week.

Thunderstorm chances increase today to a 15-20% chance. Best areas
will be in Mono and Mineral counties, potentially sneaking into
the Tahoe Basin, as well as far NE CA and N Washoe county. Threats
include lightning, brief heavy downpours, and erratic outflows.
Thunderstorm chances continue each afternoon this week, but range
from 5-15%.

Unfortunately, the haze will linger again today as fires continue
in and around the Great Basin and Desert Southwest. However, the
aforementioned low will bring increased afternoon breezes Tuesday,
helping to clear out some of the haze. As the week continues,
expect relatively warm and dry conditions.

AVIATION...

* VFR conditions persist with light winds and typical afternoon
  W-SW wind gusts up to 20 kts. Expect a 15-20% chance of isolated
  thunderstorms today between 21-03Z, primarily for KMMH and KTVL.
  Primary storm concerns will be brief heavy rain, outflow gusts,
  and localized turbulence.

* The hot temperatures may produce density altitude impacts,
  especially for KTRK, KTVL, and KMMH. Slantwise visibility
  reductions remain possible with smoke and haze from nearby
  wildfires.

-Giralte/Edan

&&

.REV Watches/Warnings/Advisories...
NV...Heat Advisory until 9 AM PDT Tuesday NVZ003-005.

     Heat Advisory until 9 AM PDT Wednesday NVZ001-004.

CA...Heat Advisory until 9 AM PDT Tuesday CAZ070-071.

&&

$$