Technical Forecast Discussion

534
FXUS65 KREV 290759
AFDREV

Area Forecast Discussion
National Weather Service Reno NV
1259 AM PDT Tue Apr 29 2025

.KEY MESSAGES...

* A warming trend continues with above average temperatures
  expected through Friday.

* A weak system may provide chances for afternoon showers and
  thunderstorms Tuesday through Thursday.

* Another spring storm system has the potential to bring back
  colder temperatures, gusty winds as well as rain and snow
  chances this weekend.

&&

.DISCUSSION...

In true spring fashion, our weather will provide a roller coaster
ride this week as a warming trend gives way to another spring
storm this weekend. This system will give us a bit of a repeat of
last weekend with much cooler temperatures, increased winds, and
chances for rain and snow showers area wide.

A warming trend continues with above average high temperatures
expected through Friday. Western Nevada valleys will warm into
the mid 70s by Thursday with upper 70s possible by Friday. Sierra
communities could warm to the mid and upper 60s.

A passing shortwave will provide increasing clouds with daily
chances for afternoon showers along with a few thunderstorms.
Rain showers this afternoon will favor areas north of I-80 before
tracking south of I-80 on Wednesday as the shortwave tracks
south through the region. Thunderstorm chances will be highest on
Wednesday (20-25% chance) as enhanced instability couples with
dynamic forcing with the shortwave axis across the E.Sierra and
areas south of I-80 in W.Nevada. By Thursday, most shower and
isolated thunder chances will linger mainly across Mono county.

Our next incoming low pressure system will begin to increase
shower and thunderstorm chances Friday afternoon before becoming
more widespread in coverage across the Sierra and western Nevada
on Saturday as the core of the low tracks onshore. Snow levels
will begin to fall from about 10,000` on Friday to near 7,000` by
Saturday afternoon. Snow levels could continue to fall to near
6,000` by early Sunday morning but any snow accumulations may be
difficult on paved surfaces. Precipitation amounts and snow levels
remain lower confidence at this time, but the overall trend for
a much cooler and wetter pattern is looking favorable for the
upcoming weekend. Fuentes

&&

.AVIATION...

VFR conditions will prevail on Tuesday for most E.Sierra and
W.Nevada terminals with lighter W-NW winds. Clouds will increase
through the day ahead of a weak low pressure system, which could
provide a 20-25% chance of showers as far south as I-80 this
afternoon and evening with 30-50% chances northward of Susanville-
Gerlach. 10-15% chance of isolated thunderstorms mainly north of
I-80 this afternoon. Fuentes

&&

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

&&

$$

NWS REV Office Area Forecast Discussion