Scientific Forecaster Discussion
Area forecast discussion
National Weather Service Eureka California
856 am PDT Thursday Jul 24 2014
Synopsis...high pressure building over California will result in
dry conditions and above normal daytime temperatures across
northwest California into the weekend.
Update...temperatures are warming quickly under clear skies along
the coast. Thus...afternoon highs should be a few degrees warmer
than previously forecast. Considering conditions are expected to
be similar the next few days...also opted to increase highs at
coastal sites into the weekend. Otherwise the forecast remains on
track and the previous discussion is included below. Rpa
Previous discussion......issued at 339 am PDT...
Discussion...no significant changes were made to the forecast.
Models show high pressure building over California today into this
weekend. This will allow inland daytime temperatures to rise into
the 90s and low 100s. Inland conditions will be dry with mostly
sunny skies. Along the coast the temperatures will be seasonable
with overnight clouds gradually increasing this weekend. Models
still show a cut-off low forming to our southwest late this week
into the weekend. However, the strength and location remains an
issue. Kept probability of precipitation low for the highest terrain and thunderstorms
out of this forecast.
Aviation...high pressure building into the area will allow for
clearing skies inland and midday gusty winds. Uki will remain VFR
through the day.
With high pressure building in, coastal areas will experience
increasing northerly winds through the day and a return of low
clouds and fog tonight. Therefore look for VFR today along the
coast becoming LIFR this evening and tonight. Bfg
Marine...high pressure will continue to build toward the region
from the west today. This will tighten the surface pressure
gradient causing increasing northerly winds and building steep
seas. Models continue to indicate marginal gale conditions with
gusts to 35 knots developing late this afternoon and remaining
through the evening over the outer waters. Northerly seas will
increase during this time frame, peaking around 12 feet at 9 seconds
this evening. As such have maintained the small craft advisories
and gale warnings in the forecast. Depending upon how the higher
waves offshore move into the inner waters, may need to issue a
hazardous seas warning for a short time. Conditions will likely
remain elevated into next week, especially across the outer
Northwest California coastal waters...
Small Craft Advisory from 3 PM this afternoon to 9 am PDT
Small Craft Advisory until 3 PM PDT this afternoon pzz470.
Gale Warning from 3 PM this afternoon to 8 PM PDT
Small Craft Advisory until 5 am PDT Friday pzz455.
Small Craft Advisory until 3 PM PDT this afternoon pzz475.
Gale Warning from 3 PM this afternoon to 11 am PDT
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