National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
FXUS65 KREV 212053
AFDREV

Area Forecast Discussion
National Weather Service Reno NV
153 PM PDT Sun Apr 21 2024

.SYNOPSIS...

Well above normal warm temperatures with mostly dry conditions
will prevail through Monday. There is a slight chance of showers
Monday afternoon and evening. Unsettled weather returns Tuesday
and beyond with much cooler temperatures by the end of the week
and daily chances of showers and thunderstorms.

&&

.SHORT TERM (TODAY AND MONDAY)...

Yet another beautiful April day is well underway, characterized by
temperatures climbing into the 60s and 70s beneath sunny skies.
Today will likely be the warmest of the next seven days with highs
reaching the 60s to low 70s in the Sierra and 70s to low 80s for
western Nevada communities. We`re still waiting on our first 80F
observation at Reno-Tahoe Int`l Airport of 2024, although that will
likely change this afternoon with a forecast high of 85F. Be sure to
stay hydrated and wear sunscreen if venturing outdoors today! Above
average temps will maintain snowmelt rates, which will keep area
waterways running fast and cold but below respective flood stage.

Monday won`t be quite as warm as today, but only by a couple degrees
so plan on a warm start to the work week. Latest HREF and CAM
guidance indicate the potential for showers Monday afternoon and
evening, especially along and south of the I-80 corridor where
chances vary from 10-20%.

.LONG TERM (TUESDAY AND BEYOND)...

Robust upper ridging, which is responsible for our stretch of warm
and dry weather, will finally dislodge late Monday into Tuesday as
an eastern Pacific trough approaches the region. This will allow for
a much more progressive synoptic pattern for the remainder of the
week and into the weekend, featuring much cooler weather, increased
breezes, and daily chances of showers and thunderstorms. Best
spatial odds will favor the Sierra, NE CA into N Lassen County, and
Mono into S. Lyon and Mineral counties each day with lesser odds
elsewhere.

A couple days to keep in mind will be Wednesday and certainly
Friday, which both feature a maxima in shower and thunderstorm
potential. The former day is a bit more limited regarding spatial
coverage and probability, but suggests a 30-50% of showers from Mono
County into SE Churchill County with a 20-30% chance of
thunderstorms in the afternoon. The 12z suite of ensembles,
corroborated with latest blended guidance, continue to emphasize
Friday as the most favorable day for inclement weather in terms of
coverage as a vast majority of the region has at least a 30-40%
chance of showers and a 15-30% of thunderstorms. Finally, steady
cooling from Tuesday onward will yield widespread below normal
temperatures by next weekend. In short, enjoy the weather today and
Monday because it won`t stick around long!

-Salas

&&

.AVIATION...

VFR conditions will persist through today. There`s a 15% chance for
a high-based, isolated thunderstorm near KMMH this afternoon. Our
typical afternoon breezes will kick in today and tomorrow with
gusts generally out of the west at 15-20 mph. Additional storms
are expected tomorrow across the Sierra and eastern Sierra, with
increased coverage, a slightly greater risk for lightning, and
gusty outflow winds.

-Justin

&&

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

$$