Area Forecast Discussion
Issued by NWS Reno, NV
FXUS65 KREV 232108
Area Forecast Discussion
National Weather Service Reno NV
208 PM PDT SAT JUL 23 2016
Above average daytime temperatures will continue through this
weekend, with hot conditions likely next week as strong high
pressure builds into the Great Basin. A very dry air mass with
mainly light late day breezes will prevail for the upcoming week.
Very dry conditions continue with humidity values in the single
digits during the day. Humidity recovery in mid slope and ridge
top locations will be quite poor for the next few nights, with
values possibly dropping to single digits at times even during the
night or morning hours. Fire safety awareness remains important
because grass and brush are more susceptible to fire starts in dry
For tomorrow and Monday, high temperatures in warmer valleys
should reach triple digits, while highs for most mountain
communities should be in the mid 80s to low 90s. A weak late day
zephyr breeze returns Sunday-Monday with gusts remaining below 25
.LONG TERM...Tuesday through Saturday...
Models remain consistent in a very strong ridge building over Nevada
from Tuesday through Friday. 700 mb temperatures are projected to
range 16-20 degrees C yielding uncomfortably hot surface
temperatures over 100 degrees. Thursday is still expected to be the
hottest day where Sierra Front valley temperatures will approach 103
degrees. The only change from previous forecast shows Wednesday a
tad warmer especially over the Basin and Range. As a result, highs
of 106 will be possible for Fallon/Lovelock by Thursday. Sierra
valleys will be about 10-13 degrees cooler than the Sierra Front
with highs in the upper 80s and around 90 degrees.
The ridge begins to retreat late Friday and early Saturday resulting
in slightly cooler temperatures and the potential for some mid level
moisture to work around the ridge`s western periphery. Cloud cover
may provide some relief from Southern Douglas to Mono County as
early as Friday with coverage becoming more expansive Saturday.
Temperatures will drop a degree or so area-wide with slightly
cooler 700mb temperatures aloft.
Otherwise, have opted to keep slight chances of thunderstorms over
the Sierra in Mono County and White Mountains Saturday afternoon
even though GFS and ECMWF differ on how much flow will open to allow
moisture to spread northward. EC is less exciting with moisture
stopping in Inyo County while GFS maintains moisture up to the
very southern portion of the Tahoe Basin around Highway 50. Boyd
The continuation of very dry air in the lower levels and aloft will
limit any cloud development through Sunday at least. Typical
afternoon Zephyr-type winds will develop each day with gusts in the
20-23 knot range immediately east of the Sierra along the Highway
395 corridor. Well to the east of Highway 395 the gusts are not
likely to exceed 17-20 knots each day. Light winds will continue
aloft as well. Some local turbulence is likely due to intense
heating along the slopes of any mountain range and over the very
warm valleys each afternoon.
Into next week surface high temperatures will climb into the 100-106
range for the lower valleys east of the Sierra. This may present
some density altitude issues for larger aircraft by Wednesday.
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