Area forecast discussion
National Weather Service Sacramento California
402 PM PDT Tuesday Jun 18 2013
Synopsis...
a low pressure system along the northwest coast will bring a
slight chance of showers to northern Shasta County tonight and
tomorrow...dry elsewhere. Warmer weather returns late in the
week.
&&
Short term discussion...
Upper low continues to spin near the Oregon/Washington coast.
There is not much moisture with this system with precipitable water values
between 0.50-0.75 inches. Despite this lack of moisture a line of
showers is developing near Montana. Shasta and will skim northern
Shasta County through the evening. Winds are gusting between
30-35 miles per hour through the Delta extending east to Stockton. These
winds should diminish towards morning.
Upper low will slowly shift east through Oregon tomorrow keeping
the best shower chances north of the area...still slight shower
chances over the northern mountains of Shasta County during the morning.
Temperatures will warm a few degrees into the low 80's...but
remain around 5 degrees below normal. Low will move northeast into
the northern rockies on Thursday with possible breezy north winds on
the backside of the system. Temperatures will warm to near normal
readings in the middle/upper 80's. Upper ridge will build over norcal
on Friday with temperatures warming into the low 90's with clear
conditions.
&&
Extended discussion (saturday through tuesday)
High pressure will strengthen by the end of the week
leading to above normal temperatures for interior norcal.
Saturday is expected to be the hottest day with some valley sites
warming into the upper 90s. Another trough over the eastern
Pacific will cause a cooling trend early next week and may bring a
slight chance of light rain to far northern California.
&&
Aviation...
VFR conditions dominate as an upper level low moves through the
area today into Wednesday. Southwest winds 12-25 kts with gusts
up to 30 kts through the Delta and 10-18 with gusts around 20 kts
in the valley and gusts up to 50 kts over ridges. Showers and
thunderstorms are possible over Shasta County this afternoon/evening.
Winds will lessen overnight. Stratus in the Delta and low clouds
around Sacramento (especially banked up against the nearby
foothills) may occur between 12-18z bringing areas of MVFR and
local IFR conditions Wednesday morning.
&&
Sto watches/warnings/advisories...
none.
&&
$$
