Sunrise 5:46 AM   Sunset 8:25 PM Moonrise 3:52 PM   Moonset 2:47 AM

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PZZ415 Expires:202403280800;;503711 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 244 Pm Pdt Sun May 19 2024
Synopsis for northern california waters - Gale force northerly winds will continue this afternoon across all waters. A strong thermal trough will continue to produce gale force winds and very steep, hazardous seas into very early Tuesday morning across much of the coastal waters. Gale force conditions may persist across the southern outer waters through Tuesday. Conditions will gradually improve mid to late in the week, but seas will remain hazardous for small craft.

FXUS66 KSTO 191957 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 1257 PM PDT Sun May 19 2024


SYNOPSIS
Seasonable temperatures will continue today and into early next week. Mostly sunny and dry conditions with periods of breezy winds expected through the next 7 days, strongest winds expected tonight-Monday.

DISCUSSION

Afternoon GOES-18 Satellite analysis reveals some passing mid and upper level clouds across interior NorCal, mostly in the central Sacramento Valley. Locally breezy winds have been observed this morning, with some 10-20 mph speeds reported across the Valley. The strongest winds are expected to begin later tonight and last through Monday.

A trough is currently digging through northeastern WA and will continue to dig into the Great Basin region through Monday, where it will phase with a closed low in SoCal. As the trough and closed low phase together, our current northwesterly flow will transition into a northerly component, and pressure gradients will increase setting up for gusty northerly winds tonight and tomorrow, mainly in the wind prone areas of the western Sacramento Valley along the I-5 corridor. Wind gusts of 30-35 mph are anticipated, along with sustained winds of around 20-25 mph. Strongest winds are expected to develop just after sunrise tomorrow morning, around 7am and last through the evening. The National Blend of Models (NBM) continues to show roughly 50-80% probabilities that there could be local gusts greater than 40 mph during the timeframe of peak winds. At this time, we are not expecting widespread wind gusts greater than 40 mph, however some areas between Red Bluff and Arbuckle could experience local wind gusts of 40 mph. Minimum Relative Humidity (RH) values will fall, with widespread less than 15% RH values forecast for much of the Sacramento Valley tomorrow.
As such, with low RH values and breezy/gusty northerly winds, locally elevated fire weather conditions will exist tomorrow across the western Sacramento Valley.

Tuesday we will see some relief from the gusty northerly winds as northerly flow will weaken as the trough translates to the east.
Our upper level pattern will transition into a northwesterly flow again, and pressure gradients will weaken as a result.
Temperatures will climb on Tuesday into the mid 80s to low 90s across the Delta and Valley and upper 60s to low 80s for the Foothills and mountains. While we remain in northwesterly flow aloft, another shortwave is progged to dig into Washington and Oregon on Wednesday, which will bring another round of northerly winds and cooler temperatures. There is very limited moisture associated with this system, so we are not anticipating any precipitation chances for the area.

.EXTENDED DISCUSSION (Thursday THROUGH Sunday)...

On Thursday, an upper level closed low is forecast to develop over Idaho and place our area under upper troughing. Right now, main weather impacts from this troughing will be cooler temperatures and breezy northerly winds for the western Sacramento Valley. Friday and Saturday, another trough in the PacNW begins to dig southward and keep the area under the influence of upper troughing extending through SoCal, again keeping temperatures cooler. The NBM introduces slight precipitation chances in the northern and eastern foothills and mountains Saturday afternoon, however current probabilities of seeing a trace of rainfall are below 25%, which highlights some of the uncertainty with exact track, strength, and timing of the system. Cluster analysis reveals general agreement that the area will be under the influence of troughing, however the uncertainty lies on the exact track/location.

High temperatures on Saturday will struggle to reach 80 for the Valley, with cooler low 50s to upper 60s for the mountains and Foothills. Sunday, we will warm up slightly as upper level heights are projected to flatten into a more zonal component, with highs reaching the 80s for the Valley and 60s to upper 70s for the foothills/mountains.

AVIATION

VFR conditions prevail over interior NorCal through the forecast period. Light to breezy surface winds, 12 kts or less, expected through 06z. Winds then shift to a predominantly northerly direction overnight, with gusts increasing to 20 to 30 kts within the Sacramento Valley after 09z.

STO WATCHES/WARNINGS/ADVISORIES
None.

Arcata Wharf
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Sun -- 03:54 AM PDT     Moonset
Sun -- 05:13 AM PDT     1.48 feet Low Tide
Sun -- 05:54 AM PDT     Sunrise
Sun -- 11:18 AM PDT     5.13 feet High Tide
Sun -- 04:46 PM PDT     2.23 feet Low Tide
Sun -- 04:59 PM PDT     Moonrise
Sun -- 08:31 PM PDT     Sunset
Sun -- 11:05 PM PDT     6.78 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Arcata Wharf, Humboldt Bay, California, Tide feet

Eureka Slough Bridge
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Sun -- 03:54 AM PDT     Moonset
Sun -- 04:31 AM PDT     1.41 feet Low Tide
Sun -- 05:55 AM PDT     Sunrise
Sun -- 11:02 AM PDT     5.48 feet High Tide
Sun -- 04:04 PM PDT     2.18 feet Low Tide
Sun -- 04:59 PM PDT     Moonrise
Sun -- 08:31 PM PDT     Sunset
Sun -- 10:49 PM PDT     7.28 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Eureka Slough Bridge, Humboldt Bay, California, Tide feet

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