Marine Weather Net

Point St. George to Point Arena between 60 and 150 NM Offshore Forecast


TODAY

N
WINDS
20 - 30
KNOTS

TONIGHT

N
WINDS
20 - 30
KNOTS

SUN

N
WINDS
20 - 30
KNOTS

SUN NIGHT

N
WINDS
20 - 30
KNOTS

The Marine Weather Forecast In Detail:
PZZ820 Forecast Issued: 827 AM PDT Sat Jul 24 2021

Today...N Winds 20 To 30 Kt. Seas 6 To 10 Ft.
Tonight...N Winds 20 To 30 Kt. Seas 7 To 11 Ft.
Sun...N Winds 20 To 30 Kt. Seas 8 To 12 Ft.
Sun Night...N Winds 20 To 30 Kt. Seas 7 To 10 Ft.
Mon...N Winds 20 To 30 Kt. Seas 7 To 10 Ft.
Mon Night...N Winds 15 To 25 Kt. Seas 6 To 9 Ft.
Tue...N Winds 15 To 25 Kt. Seas 5 To 8 Ft.
Tue Night...N Winds 10 To 20 Kt. Seas 5 To 6 Ft.
Wed...N Winds 15 To 25 Kt. Seas 5 To 7 Ft.
Wed Night...N Winds 15 To 25 Kt. Seas 6 To 8 Ft.
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Area Forecast Discussion
National Weather Service Eureka CA
505am PDT Sat July 24 2021

Synopsis
Interior valley temperatures will top 100 this weekend, while periods of sunshine and mild afternoon conditions occur near the coast. Otherwise, showers and thunderstorms will be possible starting Monday, with an even greater threat of storms occurring on Tuesday.

A moderate heat risk will carry through the weekend, with interior valley highs averaging around 100F. Current mid to high level water vapor imagery is showing a pronounced area of strong subsidence and associated dry air from NRN CA north across the PACNW. At the same time, a boundary of mid to upper monsoonal moisture can be seen pushing from the SW through CNTRL CA. This moisture will begin working in Sunday night, accompanied by highly anomalous PWAT (Precipitable Water) values. A tight density gradient will develop with the initial surge of moisture into the CWA.

Moreover, steep midlevel lapse rates, will aid in the development of weak to moderate MUCAPE values rooted near the 600 mb level. Model guidance also shows subtle perturbations in the upper-flow rotating north around an anticyclone positioned over the Intermountain West. Those perturbations combined with the moist/unstable midlevel environment will support possible isolated/scattered thunderstorm development Monday morning through the evening. That threat will also include coastal areas. Additional storm chances will exist Tuesday, and again Wednesday.

Marine
Northerly winds are expected to continue through the period, with occasional gusts to gale force across portions of the northern outer waters. The strongest winds are expected to shift a bit farther offshore across the S waters as we head into early next week. Again, the gale force gusts are expected to cover less than 50% of either zone through the period. Hazardous sea conditions are forecast to be more expansive as we get into Saturday night and continuing through Sunday Night. Have upgraded the Hazardous Seas Watch to a warning for the N outer waters through Sunday Night. A mid-period NW swell and a long period SSW swell will return late in the weekend, but both of these swell trains are expected to be fairly small, and the forecast will continue to be dominated by short period, locally generated waves. /MKN

Fire Weather
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.EKA WATCHES/WARNINGS/ADVISORIES... CA...Fire Weather Watch from late Sunday night through Monday evening for CAZ203-204-211-212-264-276-277-283.

NORTHWEST CALIFORNIA COASTAL WATERS...Small Craft Advisory until 6pm PDT this evening for PZZ470.

Hazardous Seas Warning from 6pm this evening to 3am PDT Monday for PZZ470.

Small Craft Advisory until 3pm PDT Monday for PZZ475.