Sunrise 5:45 AM   Sunset 8:53 PM Moonrise 11:30 PM   Moonset 9:53 AM

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PZZ415 Expires:202403280800;;743623 Fzus76 Keka 280557 Mwseka
marine weather statement national weather service eureka ca 1057 pm pdt Wed mar 27 2024
pzz410-415-450-455-470-475-280800- 1057 pm pdt Wed mar 27 2024
a marine weather statement has been issued for the following areas - . Coastal waters from cape mendocino to pt. Arena ca out 10 nm - . Coastal waters from pt. St. George to cape mendocino ca out 10 nm - . Humboldt bay - . Humboldt bay bar - . Waters from cape mendocino to pt. Arena ca from 10 to 60 nm - . Waters from pt. St. George to cape mendocino ca from 10 to 60 nm - .
at 1056 pm pdt, doppler radar indicated strong Thunderstorms, capable of producing winds to around 30 knots and small hail. These Thunderstorms were located along a line extending from 12 nm northwest of cape mendocino to 37 nm southwest of eureka, moving northeast at 25 knots.
precautionary/preparedness actions - .
water spouts are possible along with stronger Thunderstorms - .locally higher waves - .and lightning strikes. Boaters should seek safe harbor immediately until these storms pass.
mariners can expect gusty winds to around 30 knots - .locally higher waves - .and lightning strikes. Boaters should seek safe harbor immediately until these storms pass.
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lat - .lon 4082 12409 4080 12413 4081 12416 4080 12418 4075 12419 4072 12422 4070 12421 4069 12423 4071 12427 4061 12433 4044 12441 4039 12437 4023 12480 4061 12466 4087 12416 4076 12423 4086 12415 4085 12412 4086 12410

PZZ400 219 Am Pdt Wed Jun 26 2024
Synopsis for northern california waters - Winds continues to diminish across the waters through this morning. Light to moderate west-northwest breezes this afternoon, with the strongest breezes downwind cape mendocino. Seas are dominated by a decaying northwest swell. Conditions will begin to deterioate Thursday morning into Friday as northerlies begin to pick up producing steep seas. NEar gale to locally gale force gusts is possible across the outer waters on Friday.

FXUS66 KEKA 261153 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 453 AM PDT Wed Jun 26 2024

SYNOPSIS
An upper level disturbance and associated surface front will produce widespread marine stratus and relatively cooler temperatures through Thursday. Warming trend returns for this weekend into next week.



DISCUSSION
Last few remaining showers in eastern Trinity county are exiting the region after a mildly unstable day. Widespread marine stratus once again inundating the NorCal coast with <1000 foot ceilings, reduced viz and drizzle amidst light southerly flow. HRRR indicating these conditions will persist through the morning as moist onshore flow advects low fog and mist further inland and into coastal river valleys. Accumulations of a few hundredths of an inch of precip on the Redwood Coast are possible by late morning. An upper level trough will steadily converge onto the north coast, providing just enough lift to mix the BL and break up the stratus deck with afternoon diurnal heating. It is unlikely that cloud cover will completely dissipate before a resurgence of moisture along the surface frontal boundary late Wednesday evening. Hi-res models including HRRR have been showing potential for light precip on Humboldt and Del Norte coasts by early Thursday morning as this front traverses the region.

With this upper trough also comes cooler temperatures across the CWA Highs only expected reach the mid 70's to low 80's across the interior while coastal highs continue to be dampened by marine stratus. NBM anticipating some valleys in southern Mendocino, Lake and eastern Trinity counties to rise into the upper 80's, although probabilities significantly fall off at 90 degrees. Enhanced NW winds are also expected this evening and overnight, especially in Lake and Trinity counties. Wind gusts 15-25 mph are possible alongside 20-35% RHs before recovering to 50-60% overnight.

A similar pattern is expected Thursday as stratus struggles to clear beneath a marine inversion. Similarly cool temperatures and diurnally driven NW flow expected with the lowest RHs remaining in eastern counties bordering the Sac Valley. Coastal winds may increase in the afternoon as the thermal trough redevelops beneath building high pressure. Broad, weak ridging is expected to continue late this week with slightly warmer temperatures.
Additional upper shortwaves will provide similar disturbances this weekend before potentially for a more substantial return to warm and dry conditions early next week.



AVIATION
IFR/LIFR conditions with OVC layer between FL003-FL015 with visibility in mist at the coastal terminals early this morning, with a deeper marine layer along the Redwood Coast. The McKinleyville profiler indicates a marine layer depth up to around 2,500 feel MSL. Patchy drizzle has been occurring along the North Coast as result of this uniform saturated layer. Otherwise, stratus are expected to gradually lift and scatter out during the morning and early afternoon as an approaching shortwave destabilize the marine layer. Expect fluctuations in conditions at the coastal terminals after 19Z, mainly between MVFR and VFR.
Meanwhile, VFR conditions prevail at UKI. Winds will remain fairly light this morning, becoming WNW at 5-10 kt late morning/early afternoon at ACV and CEC....while up to 15 kt at UKI, with occasional gusts up to around 20 kt from 26/21Z and 27/3Z.

MARINE
Weaker winds across the coastal waters this morning.
Moderate to locally fresh west to northwest breezes are expected to south of Cape Mendocino this afternoon. Seas are dominated by a decaying northwest swell. Northerlies will increase and spread from south to north across the coastal waters Thursday into Friday, with the strongest winds across the outer waters. Wind driven seas are expected become steep and hazardous for small craft as result. Near gale to locally gale force gusts is possible across the outer waters on Friday, generating steep seas, with short period seas picking up to around 8 to 10 feet at 8 to 9 seconds Friday afternoon. Winds diminish throughout the weekend as another upper level trough moves over the area.



FIRE WEATHER
Gusty NW winds combined with 20-30% minimum daytime RH values may pose an increased fire weather threat this afternoon and evening, especially in Lake County. Greatest threat to fine fuels in areas below 2000 feet.

EKA WATCHES/WARNINGS/ADVISORIES
CA...
None.
NORTHWEST CALIFORNIA COASTAL WATERS...
None.

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Eureka
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Fields Landing, Humboldt Bay, California, Tide feet

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