Area Forecast Discussion
Issued by NWS Sacramento, CA
FXUS66 KSTO 232205
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SACRAMENTO CA
305 PM PDT Wed Jul 23 2014
Temperatures will rise to near normal on Thursday then warm to
several degrees above normal Friday and Saturday then near to a
little above normal temperatures for early next week. The Sierra
crest will see a threat of thunderstorms Sunday into early next
week and possibly as far north as the Shasta County Mountains on
.Short Term Discussion...
Upper level trough moving through the Pacific northwest today.
This is bringing some cumulus development over the coastal range
this afternoon. Although do not expect any thunderstorms to
develop at this time. Clearing skies are expected tonight into
Thursday as high pressure builds into the area. Temperatures are
running in the 80s in the valley and 60s and 70s in the mountains
this afternoon which is several degrees below normal for late
July. Temperatures warm up to the 90s in the valley and 70s and 80s
in the mountains tomorrow as high pressure starts to build in from
the southeast. This brings temperatures to around normal for this
time of year. Breezy and gusty North winds tomorrow...especially
along the west side of the Sacramento Valley with the MFR-SAC
gradient almost 10MB as surface high pressure builds into Oregon.
Temperatures will continue to warm to the mid 90s to 105 in the
Valley and low 70s and low 90s in the mountains on Saturday with
high pressure over the area. These temperatures area a few degrees
above normal for the end of July.
.Extended Discussion (Sunday through Wednesday)
A ridge of high pressure will continue over the western US Sunday
and into next week. This will promote southerly flow once again
over California, which will bring monsoonal moisture back up over
the Sierra Crest along the western side of the upper level high.
The moisture will be enough to support a potential for Sierra
thunderstorms beginning Sunday afternoon/evening and continuing a
slight chance for Monday and Tuesday afternoon/evenings. Little
change in temperature is forecast for the extended, with
temperatures reaching a few degrees above normal with the
influence of the persistent high. Shen
VFR conditions expected the next 24 hours. Generally southerly
winds 10 kts in valley. Winds becoming northerly winds 10 to 18 kt
with gusts up to 28 kts in the valley and Shasta County beginning
after 15Z Thursday.