Scientific Forecaster Discussion

Return to Local Conditions & Forecast

Without Abbreviations
With Abbreviations

fxus65 krev 211947 
afdrev

Area forecast discussion
National Weather Service Reno Nevada
1247 PM PDT Wed Aug 21 2019

Synopsis...

Expect quiet weather through this week and into the coming weekend.
Warm and dry conditions continue along with typical late day
breezes. Temperatures dip a few degrees tomorrow, but generally
remain within a few degrees of average this week before heating up
again by the weekend. The pattern begins to change next week with
the possibility of thunderstorms returning by the middle of next
week.

&&

Discussion...

A low-pressure system moves eastward across the Pacific northwest
and Great Basin tonight and tomorrow. This system will usher in
an increase in winds late this afternoon and this evening. Winds
will not be strong but gusts 20-30 mph are expected, mainly north
of I-80. These winds, along with low relative humidity, will
increase the potential risk for wildfire growth. Expect a few
hours of low-end critical fire weather conditions, mainly north
of I-80, this evening. Relative humidities will increase
overnight but will remain lower than average for mid-slope and
ridge locations.

Most of the moisture with the aforementioned system remains north
of the Nevada/or border, with only a small chance (less than 10%) of
a shower this evening north of Susanville-Gerlach. Afternoon
temperatures tomorrow will be cooler and close to normal, with
highs around 90 for western Nevada valleys and in the 80s for most
mountain communities.

A Flat Ridge of high pressure sets up over California/Nevada Friday through
the weekend. This will result in another stretch of above normal
temperatures and breezy afternoons. Gusts and relative humidity
could be near critical for fire risk again north of I-80 (similar
to this evening) Saturday evening and possibly again Sunday
evening.

Latest computer simulations continue to show a return of moisture
and thunderstorms becoming increasingly likely by the middle to
the end of next week. Jcm



&&

Aviation...

A weak low-pressure system crossing the region will bring an
increase of mid-level clouds this evening and a shift to north-
northeast winds tomorrow. For Friday, typical late afternoon
westerly Zephyr winds return, gusting 20-25 kts. Jcm

&&

Rev watches/warnings/advisories...
Nevada...none.
California...none.
&&

National Weather Service Glossary of Abbreviations