Marine Weather Net

Point St. George to Cape Mendocino CA from 10 to 60 NM Marine Forecast


TONIGHT

S
WINDS
5 - 10
KNOTS

SAT

N
WINDS
5 - 10
KNOTS

SAT NIGHT

N
WINDS
15 - 20
KNOTS

SUN

N
WINDS
15 - 20
KNOTS

The Marine Weather Forecast In Detail:
PZZ470 Forecast Issued: 201 PM PDT Fri Sep 18 2020

Tonight...S Winds 5 To 10 Kt. Waves W 4 Ft At 8 Seconds...And S 2 Ft At 11 Seconds. Slight Chance Of Showers. Patchy Fog.
Sat...N Winds 5 To 10 Kt. Waves W 4 Ft At 8 Seconds...And S 2 Ft At 10 Seconds. Patchy Fog.
Sat Night...N Winds 15 To 20 Kt. Waves Nw 5 Ft At 7 Seconds. Patchy Fog.
Sun...N Winds 15 To 20 Kt. Waves N 6 Ft At 6 Seconds...And Nw 2 Ft At 12 Seconds.
Sun Night...N Winds 10 To 20 Kt. Waves N 6 Ft At 6 Seconds... And Nw 2 Ft At 12 Seconds.
Mon...Nw Winds 5 To 10 Kt. Waves N 5 Ft At 5 Seconds...And Sw 2 Ft At 20 Seconds.
Tue...Sw Winds 5 To 10 Kt. Waves N 3 Ft At 5 Seconds...And Nw 4 Ft At 12 Seconds.
Wed...S Winds 10 To 15 Kt. Waves S 6 Ft At 6 Seconds.
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Area Forecast Discussion
National Weather Service Eureka CA
253pm PDT Fri September 18 2020

Synopsis
Light rain, mainly north of Cape Mendocino will taper off this evening. Dry weather and seasonably warm temperatures will return this weekend and last through much of next week before the next chance of rain towards the end of the week.

Beneficial isolated light rain showers continue to be observed on radar, with activity picking up inland into the heating of the afternoon. The Quantitative Precipitation Forecast forecast is verifying well for Humboldt county with widespread rain totals just over a tenth of an inch, with some isolated higher amounts near two tenths so far. The southern portions of Del Norte county have missed much of the precipitation so far, but showers continue to increase in that area. The very moist air column and relatively high PWAT (Precipitable Water) values are helping the productivity of the small showers. Nice bouts of sunshine in between morning and afternoon showers allowed temperatures to reach the upper 60's to lower 70's along the coast. Dewpoints are elevated again today in the lower 60's, with a continued pleasant, humid and relatively balmy feel outside.

Zonal flow will develop this weekend as afternoon highs climb back up to around seasonal normal values in the upper 80s to low 90s across the interior. A weak shortwave will move in on Monday and may give opportunity for light coastal drizzle on Monday. This shortwave will be in advance of a deepening trough of low pressure which will approach towards the end of next week. Consistency in model runs, including ensemble guidance warrants cautionary moderate confidence for better rain chances with this next system, with the Quantitative Precipitation Forecast details yet to be worked out. /JJW

Marine
South winds to 15-20 kt have been observed over the northern waters today due to the passage of a weak frontal boundary. Those winds will weaken tonight, followed by strengthening northerlies Saturday evening through Sunday. Winds from 20 to 30 kt will be probable over the southern outer waters by late Saturday afternoon. Thus, a small craft advisory has been issued. Otherwise, winds will weaken after Sunday. In the extended range, model guidance indicates a large west-northwest swell will spread across the waters during mid to late next week.

JMG

.EKA WATCHES/WARNINGS/ADVISORIES... CA...None. NORTHWEST CALIFORNIA COASTAL WATERS...Small Craft Advisory from 5pm Saturday to 11pm PDT Sunday for PZZ475.

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