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000
FXUS65 KREV 200857
AFDREV

Area Forecast Discussion
National Weather Service Reno NV
157 AM PDT Sat Apr 20 2024

.SYNOPSIS...
Warm and dry conditions with typical afternoon breezes will
prevail through the weekend. Above average highs in the 60s for
Sierra communities and 70s for lower valleys, with even a few
valleys cresting 80 degrees into Monday. There will be isolated
shower chances near the Sierra today. The trend continues for
cooler and more active weather returns mid to late next week.

&&

.DISCUSSION...

Spring has definitely arrived across the region! Temperatures on
Friday afternoon ranged from the low to mid-70s in western NV,
eastern Lassen County, and the lower elevations in Mono County.
Low to mid-60s were common throughout the Sierra communities, with
even some low 50s in the higher elevations.

For the weekend into the start of next week, a flat ridge will
build across the western US. High temperatures today will increase
around 2-4 degrees, with some locations in western NV flirting
with the 80 degree mark. Temperatures will increase an additional
2-4 degrees on Sunday, which will be the warmest day of this short
lived spring heat streak. Low to mid 80s will be common for most
NV and northeast CA valleys, with upper 60s to low 70s for most
Sierra communities. A very slight cooldown of 1-3 degrees is in
store for Monday, but we`ll still remain well above average for
mid-April. Winds will be breezy all week in the afternoon in
western NV, with mostly lighter winds elsewhere. There is a 10%
chance of a stray showers today in Mono County, otherwise we are
dry and sunny!

Model ensembles are coming into slightly better agreement in the
pattern for the upcoming week, with solutions showing a split
trough pattern. But, there are still considerable differences into
the evolution and timing of this pattern. Either way, we`ll cool
back down to near-average temperatures and re-introduce region
wide showers by Tuesday onward. Nothing indicates anything
tremendous moving into the area precipitation wise, but light
showers can`t be ruled out.

-McKellar

&&

.AVIATION...

* VFR conditions will prevail this weekend, outside of a bit of
  patchy FZFG Saturday and Sunday mornings. Plan on light surface
  winds except for some enhanced breezes Saturday afternoon. For
  western NV valley terminals, gusts will reach 20-25 kts, while
  Sierra valley terminals will be around 15-20 kts.

* Slight 10% chances for isolated showers along the Sierra crests
  in Mono County this afternoon. Otherwise, we are dry through the
  weekend.

-Edan/McKellar

&&

.HYDROLOGY...

Above normal temperatures combined with mostly sunny skies will
increase snowmelt leading to minor to moderate rises in rivers and
creeks draining largely snow covered watersheds. While no flooding
is expected in the area, many waterways will be running cold and
fast, with gradually increasing flows into early next week. The
West Fork of the Carson near Woodfords is expected to rise above
the action stage each night through Tuesday, but remain below
flood stage.

Rivers and streams draining mostly snow covered terrain below
about 7500 feet are likely to see their seasonal peaks by early
next week. Basins with significant higher elevation terrain will
retain plenty of snow for higher flows with subsequent warmups. The
Lower Humboldt is expected to have very high flows for many weeks
with minor flooding likely in May or June, or even into early July.

Exercise caution around rivers and streams, remember mountain
rivers and streams often reach their highest levels from snowmelt
at night.

-TB

&&

.REV Watches/Warnings/Advisories...
NV...None.
CA...None.
&&

$$