Area Forecast Discussion
Issued by NWS Eureka, CA

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FXUS66 KEKA 261213

National Weather Service Eureka CA
513 AM PDT Tue Oct 26 2021

.SYNOPSIS...Scattered to numerous showers will spread across the
area through Wednesday morning. Warmer and drier conditions are
expected on Thursday, followed by additional shower activity north of
Cape Mendocino on Saturday.


.DISCUSSION...Scattered light showers are spreading across the area
early this morning ahead of weak frontal system. Rainfall
accumulations will be between 1 and 2 inches across the mountains of
Del Norte and N Humboldt counties through Wednesday morning, with
lighter amounts elsewhere. Only a few hundredths of an inch are
expected across Lake County. Drier and slightly warmer weather is on
tap for Thursday and Friday. Another weak system will bring light
rains mainly N of Cape Mendocino for Saturday, with more light rain
possible again next Monday. Nighttime lows will be above normal
through the period, so there doesn`t appear to be any frost or freeze
threat on the horizon. /SEC


.AVIATION...Prevailing MVFR conditions for the coastal terminals
through the TAF period, while VFR prevails at KUKI. However, VCSH
associated with a frontal wave will continue to arrive across the
coastal terminals, with SHRA and occasional dipping to IFR conditions.
Rain for KUKI is forecast to arrive by mid-morning, and marginal VFR
conditions will be likely. Breezy southeasterly winds have developed
overnight at the coastal terminals, with gusty winds at CEC. Winds
will gradually ease during the evening. Low level wind shear up to 40
kts around 1500 feet AGL will develop at CEC and ACV early this
morning as the front moves through, persisting at ACV through early
afternoon (20Z) and for CEC through late afternoon (23Z).


.MARINE...Steeper seas have developed as the westerly swell continues
to slowly subside today to around 11 to 12 feet at 13 second by
evening. The large swell will continue to decay to around 8 to 9 feet
by Wednesday. However, a reinforcing westerly swell will build by
Wednesday evening and seas will become elevated again. Also, a short
period wind waves will build north of Cape Mendocino late this
morning as southerly winds increase with the approach of a front.
Strong southerly winds have developed early this morning, with
periods of gale force gusts in portions of the northern waters
expected by mid-morning through the afternoon. Localize gale force
gusts up to 35 kt around Pt St George and near Cape Mendocino are
expected as well. Southerly winds are forecast to gradually decrease
Wednesday through Thursday. Potential for strong northerlies will
increase across the outer waters by Friday evening.



     Small Craft Advisory until 3 AM Wednesday for PZZ450-455-475.
     Small Craft Advisory until noon Wednesday for PZZ470.


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