Area Forecast Discussion
Issued by NWS Eureka, CA
FXUS66 KEKA 262205
Area Forecast Discussion
National Weather Service Eureka CA
305 PM PDT THU MAY 26 2016
.SYNOPSIS...High pressure aloft will provide a stretch of dry weather
through early next week. Interior temperature will begin to climb early
next week while the coastal areas will see a daily mix of clouds and
.DISCUSSION...(Tonight through Sunday)...Dry weather is expected
into the weekend with skies becoming partly cloudy to mostly sunny
across most of the area. Patchy coastal lowland and valley fog will
be possible each night and early morning. Near normal temperatures
today will warm to above normal levels over the interior by Friday
through Sunday. Near normal temperatures are expected to continue
near the coast. From Sunday night on mostly dry weather is
expected to persist into the middle of next week as an upper high
pressure ridge over the E Pacific gradually shifts E. Generally
weak disturbances will impact the Pacific NW and remain N of our
county warning area. Seasonable weather is expected along the
coast with warm weather inland. Early indications are that an
upper trough will dig over the E Pacific by Wednesday, bringing
more seasonable temperatures later in the upcoming week. SC/JT
.AVIATION...Although clouds eroded along the immediate coast...plenty of cloudiness continued
into mid-afternoon across much of Humboldt`s near coastal interior
areas (as seen on Vis Sat picture)...and as well near Orick to
Klamath. ACV pireps reported cloud tops around 025-030. MVFR
ceilings should return to Humboldt Bay...portions of the Humboldt to
Southern Del Norte Coasts...and a few spots along the Mendocino
Coast tonight. Offshore flow late tonight will likely limit the
stratus thickness but some coastal cigs are likely. KUKI should remain
VFR through the TAF period although a few pockets of fog and stratus
may develop over some inland valleys.
.MARINE...Wave heights will continue to slowly build this evening/overnight.
As of mid afternoon, the latest buoy data and ship observations
indicate sustained winds are in the 25 to 30 knot range. An area of
strengthening high pressure is currently situated to our west, with
a departing area of low pressure across the central Rockie
Mountains. Northwestern California is getting sandwiched between
these two weather systems and as the high pressure continues to draw
closer, a tight pressure gradient will persist with winds remaining
near current values, and gusts of 35 to 40 knots possible. The
current headlines in place for the outer waters looks good.
Things get a little more tricky for the near shore waters as far as
headlines go. Wave heights have increased by a couple of feet during
the past few hours, but, they are currently running below hazardous
seas criteria. The latest numerical guidance continues to suggest we
may BRIEFLY reach waves of 10 feet or more for locations 5 to 10
nautical miles from shore during the evening/overnight hours. Given
the forecast conditions, we decided not to upgrade the small craft
advisories to gale or hazardous sea warnings, due to the wave
heights/periods remaining low enough to justify not upgrading the
Conditions will remain choppy through the weekend and a small craft
advisory may be needed for the latter half of it (possibly into
Monday afternoon as well), after the current warnings/advisories
expire. A weakening pressure gradient and subsiding wave heights
will allow for improving conditions to commence by the middle of
next week. /PD
NORTHWEST CALIFORNIA COASTAL WATERS...
Small Craft Advisory until 11 PM PDT Friday FOR PZZ450.
Small Craft Advisory until 3 PM PDT this afternoon FOR PZZ470.
Gale Warning until 11 PM PDT Friday FOR PZZ470.
Small Craft Advisory until 11 PM PDT Friday FOR PZZ455.
Small Craft Advisory until 3 PM PDT this afternoon FOR PZZ475.
Gale Warning until 5 PM PDT Saturday FOR PZZ475.
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