NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION. Privacy and Cookie policy

PZZ655 Inner Waters From Point Mugu To San Mateo Pt. Ca Including Santa Catalina And Anacapa Islands- 912 Am Pst Fri Dec 8 2023
.gale watch in effect from 9 pm pst this evening through Saturday afternoon...
Today..N winds 10 to 15 kt. Wind waves 2 ft or less. W swell 5 to 7 ft at 11 seconds.
Tonight..From point mugu to santa Monica, N winds 20 to 25 kt becoming ne 25 to 35 kt after midnight. Elsewhere, nw winds 10 to 15 kt becoming ne 15 to 25 kt after midnight. Combined seas 4 to 6 ft dominant period 12 seconds.
Sat..From point mugu to santa Monica, ne winds 25 to 35 kt, decreasing in the afternoon. Elsewhere, ne 15 to 25 kt. Combined seas 4 to 6 ft dominant period 12 seconds.
Sat night..NE winds 15 to 25 kt with gusts to 30 kt in the evening, becoming 10 to 20 kt with gusts to 25 kt. Combined seas 3 to 5 ft dominant period 12 seconds.
Sun..NE winds 10 to 20 kt, becoming N 10 to 15 kt in the afternoon. Wind waves 2 to 3 ft. W swell 2 ft at 11 seconds.
Sun night..NW winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 to 3 ft at 11 seconds.
Mon..N winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 to 3 ft.
Tue..Winds variable 10 kt or less. Wind waves 2 ft or less. W swell 2 to 4 ft.

PZZ600 912 Am Pst Fri Dec 8 2023
synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park...at 17z or 9 am pst, a 1030 mb high was located over far northern california and a 1017 mb was over the coastal waters.

FXUS66 KSGX 081631 AFDSGX

Area Forecast Discussion National Weather Service San Diego CA 831 AM PST Fri Dec 8 2023

SYNOPSIS
High pressure building over the Great Basin will bring sunny days, clear nights and gusty northeast Santa Ana winds in the mountains, foothills, and valleys. The strongest winds will be on Saturday, but the warmest day will be Sunday, as winds slowly weaken. Fair and dry weather continues next week, with slight cooling Monday into Tuesday.

DISCUSSION
FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...

The forecast was updated earlier this morning to include some patchy dense fog in the valleys. This was still evident at 8 AM PST, mainly in the I.E. and around Lake Henshaw in San Diego County. High clouds were also visible spreading SE from Central CA. Our offshore sfc pressure gradient from the high desert was increasing this morning, and winds were turning northerly over the San Bernardino Mts in response. Peak gusts were mostly around 30 MPH.

From previous discussion...

Winds gradually turn northerly through the morning, spreading into the Cajon Pass and portions of the Inland Empire by late morning.
Today will be a few degrees warmer west of the mountains as the upper level trough departs and weak Santa Ana winds develop, while the mountains and deserts continue to cool in response to cold air advection from the north.

Surface high pressure builds over the northern Great Basin on Saturday, when Santa Ana winds are expected to peak. This event is mostly gradient driven with little in the way of upper level support, so winds will largely confined to the usual passes/canyons and coastal mountain slopes. Wind gusts in these locations will be around 45-55 mph with isolated gusts to around 65 mph in the favored spots. Winds turn more easterly and weaken on Sunday, diminishing Sunday night. Sunday will also be the warmest day of the week with highs in the mid to upper 70s across many of the coastal areas and western valleys.

A weak trough moves inland across California Monday into Tuesday bringing a brief return of onshore flow and minor cooling. There is some spread in the ensembles regarding the depth of this trough and how quickly it moves out, but this will mainly introduce uncertainty in the temperature forecast as the ensembles remain decidedly dry. Once the trough departs it's back to an upper level ridge and weak Santa Ana winds for the middle of next week. The ensembles all show a more robust low moving in sometime in the 8-10 day timeframe - this time with precipitation! Then again, that's how it looked for this weekend a week ago, and, well, here we are with another Santa Ana.

FIRE WEATHER
Weak north-northeasterly Santa Ana winds will develop later this morning, mainly below the Cajon Pass, where gusts will be around 20- 30 mph. Gradual drying occurs today with minimum humidity around 25- 30 percent in the Inland Empire, and as low as 5-15 percent above 6500 ft elevation. Winds turn more northeasterly-easterly and strengthen tonight into Saturday morning. Strongest winds will be below the Cajon Pass and in the Santa Ana Mountains where gusts 45- 55 mph are expected, with isolated gusts up to 65 mph in the favored locations. Gusts 35-45 mph will occur in and below the San Gorgonio Pass and on the coastal slopes of the San Diego County Mountains.
Relative Humidity will fall to around 10-15 percent on Saturday, except along the immediate coast. Poor humidity recovery is expected each night in the wind prone areas.

Winds slowly weaken Saturday afternoon and continue into Sunday with gusts 25-45 mph, then diminishing Sunday night. Sunday remains very dry with widespread relative humidity of 8-12 percent. Periods of elevated to critical fire weather conditions are expected Saturday into Sunday. A Fire Weather Watch remains in effect for portions of the Inland Empire from 10 AM Saturday through Noon Sunday.

Weak onshore flow returns for Monday and Tuesday with gradual improvement in daytime humidity and better overnight recovery.

AVIATION
081630Z
Coast/Valleys
Mostly clear skies will prevail through this evening. Gusty northeast winds will develop in some valley locations after 05Z Sat with local sfc gusts 30-45 knots. There is a 12 percent chance of winds greater than 30 kt at KONT 12-18Z Sat.
Strongest winds will occur below the Cajon Pass and the San Gorgonio Pass into the Inland Empire. Areas of mdt up/downdrafts and LLWS expected. Winds will gradually weaken after 21Z Sat through Sun.

Mountains/Coastal Foothills...Northeast winds will develop after 00Z Sat over ridges, coastal mountain slopes, and coastal foothills with initial gusts 20-30 knots. Winds strengthening to gusts 50-60 knots around 12Z Sat. Winds will gradually weaken 21Z Sat through 21Z Sun.
Areas of mdt up/downdrafts and LLWS expected.

Deserts...Mostly clear skies through Sat.

MARINE
Isolated northeast wind gusts to 20 knots, mainly off the northern San Diego County coast and off the coast near the Mexican border, will occur at times Friday night into Saturday morning.

BEACHES
The long period WNW swell will decrease through today, though some sets to 6 feet will continue, especially in southern San Diego County.

SGX WATCHES/WARNINGS/ADVISORIES

CA...Fire Weather Watch from Saturday morning through Sunday morning for San Bernardino and Riverside County Valleys-The Inland Empire.

PZ...NONE.

toggle option: (graph/table)

Newport Beach, Newport Bay Entrance, Corona del Mar, California (sub), Tide feet

Balboa Pier
Click for Map
Fri -- 02:24 AM PST     Moonrise
Fri -- 05:44 AM PST     5.07 feet High Tide
Fri -- 06:43 AM PST     Sunrise
Fri -- 12:47 PM PST     0.80 feet Low Tide
Fri -- 01:52 PM PST     Moonset
Fri -- 04:43 PM PST     Sunset
Fri -- 06:35 PM PST     3.41 feet High Tide
Fri -- 11:48 PM PST     1.70 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Balboa Pier, Newport Beach, California, Tide feet

Full Color Weather Map

Link to Loop


Other links: GEOS-West     Contential US     Full GOES-East

Santa Ana Mtns, CA,