Sunrise 6:03 AM   Sunset 8:09 PM Moonrise 2:50 AM   Moonset 2:06 PM

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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 825 Pm Pdt Thu May 2 2024
Synopsis for northern california waters - SEas and winds trend weaker through Friday, with southerly winds building ahead of a progressive front moving through the region Friday night through Saturday. Northerlies will resume on Saturday, although waves will remain below 10 feet into early next week.

FXUS66 KSTO 021905 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 1205 PM PDT Thu May 2 2024

Synopsis
Dry and warm weather through Friday with breezy northerly winds.
Active weather returns this weekend as a weather system drops down bringing showers, mountain snow, isolated thunderstorms, gusty winds and colder temperatures.

Things remain on track with high confidence of a pretty strong late spring...winter like storm system for the area this weekend.
Upper level low system will drop south Friday night then exit the area by Sunday afternoon. EC standard anomaly data showing 500 mb heights impressive at a -2 with return interval of 10 to 20 years for this time of the year. Ensemble means in good agreement that the upper low will basically slide south across central California with a good period of upper dynamics. Could be stronger if the low was further west but still some good dynamics with this system. Pretty much a classic winter system orginiating from the Gulf of Alaska with a nice Atmospheric River and PW plume with climo PW values of 150 to 230% above normal. System is a pretty quick hitter so biggest challenge is level of impacts with snow and blowing snow above 5000 feet. NBM probabilities showing bullseye of higher snow right in the I80 corridor with 70% to 80% chance of 8" and about 50% chance of a foot at highest elevations.
Snowfall rates have a chance to exceed an inch an hour in intensity Saturdday afternoon and evening. So with all this the biggest question will be the impacts of this snow and wind. With collaboration with area offices given time of year, sun angle, road and ground temperature and quickness of storm will stick with a winter weather advisory for the event.

In the valley, would expect a band of rain to push across from north to south. NBM QPF probabilities have been pretty consistent for low probs of half an inch and solid chances of quarter of an inch.

High EFI values for cool high temperatures Saturday and Sunday as well with high temperatures dropping a solid 10 to 20 degrees from Friday to Saturday.

.EXTENDED DISCUSSION (Monday THROUGH Thursday)...

Higher confidence above 50% that extended period looks to be farily dry and on the cool side. Cluster analsys showing majority of solutions point to lower 500 mb heights with dry northerly flow. Biggest risk would be mid to late week of some northerly flow looks to set up with general troughing across the Great Basin. How amplified that low gets will determine strength of wind which right now proabilties of 40 mph guest are down around 30% to 40%. WMR



AVIATION

VFR conditions persist across interior NorCal through the forecast period. Gusty north-northwesterly winds increase through the afternoon, with some Valley gusts 20 to 25 kts. Winds then decrease, but remain breezy this evening into the overnight hours.



STO WATCHES/WARNINGS/ADVISORIES
Winter Weather Advisory from 11 AM Saturday to 8 AM PDT Sunday for West Slope Northern Sierra Nevada-Western Plumas County/Lassen Park.

Arcata Wharf
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Fri -- 03:22 AM PDT     2.86 feet Low Tide
Fri -- 03:57 AM PDT     Moonrise
Fri -- 06:11 AM PDT     Sunrise
Fri -- 08:59 AM PDT     6.03 feet High Tide
Fri -- 03:13 PM PDT     Moonset
Fri -- 03:41 PM PDT     0.43 feet Low Tide
Fri -- 08:15 PM PDT     Sunset
Fri -- 10:22 PM PDT     6.66 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Arcata Wharf, Humboldt Bay, California, Tide feet

Eureka Slough Bridge
Click for Map
Fri -- 02:40 AM PDT     2.81 feet Low Tide
Fri -- 03:57 AM PDT     Moonrise
Fri -- 06:11 AM PDT     Sunrise
Fri -- 08:43 AM PDT     6.46 feet High Tide
Fri -- 02:59 PM PDT     0.33 feet Low Tide
Fri -- 03:13 PM PDT     Moonset
Fri -- 08:15 PM PDT     Sunset
Fri -- 10:06 PM PDT     7.15 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Eureka Slough Bridge, Humboldt Bay, California, Tide feet

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