636
FXUS65 KREV 270842
AFDREV

Area Forecast Discussion
National Weather Service Reno NV
142 AM PDT Mon May 27 2024

.SYNOPSIS...

Summer-like temperatures with afternoon/evening showers and
thunderstorms are on tap for Memorial Day. A slight cooling trend
with increased afternoon breezes prevail through mid-week as a
trough swings into the Pacific Northwest. High pressure returns
for the weekend, allowing temperatures to climb well above
average.

&&

.DISCUSSION...

* Today will be the warmest day of the work week, with highs in the
  mid-upper 80s across western NV and northeast CA, and low 70s for
  most Sierra communities. Though these summer-like temperatures are
  favorable for any Memorial Day outdoor activities, make sure to
  keep an eye on the sky this afternoon/evening. Intense surface
  heating coupled with a passing upper-level shortwave will increase
  instability across the region this afternoon, with a 15-20% chance
  for isolated showers and thunderstorms to develop over the Sierra
  from Lake Tahoe southward. High resolution guidance also suggests
  a few cells are possible across the Lassen County convergence zone
  (Susanville northward). Once our typical afternoon westerly
  breezes kick in, expect these showers and storms to make their way
  into far western NV by the late afternoon into the evening.

* We see a slight shift in the pattern on Tuesday as an upper trough
  moves into the Pacific Northwest. This system will introduce
  increased westerly flow over the region, with winds gusting 25-30
  mph on Tuesday afternoon. Winds shift northwesterly on Wednesday,
  remaining breezy into the afternoon. This system will also bring a
  slight cooling trend through midweek, though temperatures still
  remain above average as they bottom out on Wednesday.

* Ensemble clusters suggest high pressure ridging will return by
  late week, prompting a gradual warming trend into the weekend.
  High temperatures in lowest valleys look to flirt with the 90
  degree mark over the weekend, perhaps even into early next week.

Whitlam

&&

.AVIATION...

* Overall, VFR conditions prevail through today. Expect light winds
  with a 10-15% chance for an isolated shower and thunderstorm for
  all regional terminals between 22-03z. For any cells that develop
  over airfields, the main threat will be erratic outflow winds to
  30-35 kts.

* Enhanced WSW breezes prevail Tuesday with gusts 20-30 kts for all
  regional terminals. Winds shift to NW`erly on Wednesday with more
  typical afternoon breezes.

Whitlam

&&

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

$$