Area Forecast Discussion
Issued by NWS Eureka, CA

Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14
000
FXUS66 KEKA 141201
AFDEKA

AREA FORECAST DISCUSSION
National Weather Service Eureka CA
401 AM PST Thu Dec 14 2017

.SYNOPSIS...The upper level ridge over the west coast will persist
through Friday morning. Friday afternoon a mainly dry cold front
will move across the area bringing cooler temperatures to the
region. High pressure will return early next week, however there
is the potential for some rain by the middle of next week.

&&

.DISCUSSION...High pressure remains in place across the area this
morning. This is expected to continue through Thursday night.
Friday morning high clouds will start moving in ahead of a mainly
dry cold front. This is expected to move through late Friday
afternoon. Some occasional light rain or drizzle is expected in
the mountains of Del Norte county and the coast could see a few
hundredths. Most of the changes in the weather will be behind the
front. Gusty winds are expected and some of the coldest air of
the season. The ridges will cool off 15 to 20 degrees, although
Friday night the valleys will likely see temperatures similar to
the previous days due to the increased winds.

High pressure will return to the area for the weekend and into
early next week although it is not expected to be as strong as it
has. This will continue to bring chilly nights and mild
afternoons. There may be some fog in the valleys each night, but
confidence is low on the coverage. Any areas that do see fog and
low clouds will likely to be slow to warm up during the day and
stay in the 40s.

Tuesday night into Wednesday the 00Z GFS, Canadian, and ECMWF
have suddenly come into good agreement on some significant rain
and snow moving into the area. Confidence is still low on this as
this is rather a big jump from the previous models runs. MKK

&&

.AVIATION...Other than some MVFR visibilities in fog along the
Redwood Coast, VFR conditions prevail with light winds. Mostly clear
skies and light winds will continue for the next 24 hours across
most of the area. Low clouds may begin to expand over portions of
the coastal waters by this evening, but confidence is low. /SEC

&&

.MARINE...Moderate N winds will continue across the outer waters
with marginal Small Craft Advisory criteria over the S. Strong high
pressure will build N of the area on Friday, and N winds will ramp
up during the afternoon. Have hoisted a Small Craft Advisory for the
N outer waters during this time. This will probably need to be
expanded into the inner waters by the day shift. Gale force gusts
will be possible over the outer waters over the weekend. Have gone
ahead and issued a Gale Watch for the S outer waters starting late
Friday night. This will likely need to be expanded into the N waters
later. NW swell arrived Wednesday afternoon, and additional NW swell
trains will continue into early next week. /SEC

&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...Beach Hazards Statement through this evening for CAZ101-103-104-
     109.

NORTHWEST CALIFORNIA COASTAL WATERS...
     Small Craft Advisory from 3 PM Friday to 3 AM PST Monday
     for PZZ470.

     Gale Watch from late Friday night through Sunday afternoon for
     PZZ475.

     Small Craft Advisory until midnight PST Friday night for PZZ475.


&&

$$

Visit us at http://www.weather.gov/eureka

Follow us on Facebook and Twitter at:
http://www.facebook.com/NWSEureka
http://www.twitter.com/nwseureka

For forecast zone information
see the forecast zone map online:
http://www.weather.gov/eureka/zonemap.png



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.