Pigeon Point to Point Piedras Blancas between 60 and 150 NM Offshore Forecast
|Today...N To Nw Winds 10 To 20 Kt. Seas 6 To 9 Ft.|
|Tonight...N To Nw Winds 10 To 20 Kt. Seas 6 To 9 Ft.|
|Sun...N Winds 10 To 20 Kt. Seas 5 To 9 Ft.|
|Sun Night...N To Nw Winds 10 To 20 Kt. Seas 6 To 9 Ft.|
|Mon...N Winds 10 To 20 Kt, Diminishing To 5 To 15 Kt. Seas 6 To 9 Ft.|
|Mon Night...N To Nw Winds 5 To 15 Kt, Becoming N 10 To 20 Kt. Seas 5 To 7 Ft.|
|Tue...N Winds 10 To 20 Kt, Becoming Variable 5 To 15 Kt. Seas 5 To 7 Ft.|
|Tue Night...N Winds 5 To 15 Kt. Seas 4 To 6 Ft.|
|Wed...Nw Winds 5 To 10 Kt, Becoming N To Nw 5 To 15 Kt. Seas 4 To 5 Ft.|
|Wed Night...N To Nw Winds 5 To 10 Kt. Seas 4 To 5 Ft.|
|851 AM PDT Sat Jul 24 2021 .Synopsis for the Central California Coast and Bays Including the Monterey Bay...Greater Farallones...and Cordell Bank National Marine Sanctuaries... Northwesterly winds will continue to diminish this weekend, but gusty winds are still expected at times over the northern outer waters. The afternoons and the early evenings will see strong gusts funnel through the Golden Gate into San Francisco Bay. These strong gusts will generate steep waves resulting in hazardous seas conditions, particularly for smaller vessels. Despite winds diminishing, the seas state will be predominantly wind driven with a period of about 7 to 9 seconds. Light southerly swell persists through the weekend.|
| Area Forecast Discussion|
National Weather Service San Francisco Bay Area
106pm PDT Sat July 24 2021
Seasonable weather conditions will persist into Sunday. Monsoon moisture rotating out of the Desert Southwest will spread some high clouds and low end potential for showers and isolated thunderstorms across the region from Monday into Tuesday. Long range trends remain seasonably warm and dry through the end of the month.
as of 01:05pm PDT Saturday...A well-defined marine layer sitting at around 1500- 1800 feet in depth persists along the coast this afternoon with temperatures generally in the upper 50s to mid 60s. Given that the marine layer has not compressed as previously expected, onshore flow has spread the marine influences well inland with temperatures running a few degrees cooler compared to 24 hours ago. That said, once away from the marine influence, temperatures across the interior have already warmed into the 70s and 80s with the typical hot spots already in the low/mid 90s. This onshore flow is likely to with low clouds spreading back inland late this evening and into Sunday morning. Look for temperatures to also trend a few degrees cooler for Sunday afternoon in response to the onshore flow and increase in higher level clouds.
The increase in mid/upper level moisture responsible for increased cloud cover aloft will continue to rotate clockwise around high pressure over the Desert Southwest into early next week. Deterministic and ensemble guidance are in good agreement with monsoon moisture increasing further on Monday. In addition, an inverted trough is expected to lift northward over the Central Coast and Bay Area from midday Monday into early Tuesday morning. This feature looks to combine with anomalously high PWAT (Precipitable Water) values (1.25- 1.50" perhaps even up to 1.80") to produce a chance of high-based showers and/or thunderstorms during this timeframe. Initially, the first band of moisture may produce convection over the Pacific and then North Bay earlier on Monday before deeper moisture advects into the region Monday afternoon into early Tuesday morning. It is at this time more widespread showers will be possible with the potential for increased instability. Given this setup, any convection that does develop would be more likely to be accompanied by precipitation able to reach the surface. Therefore, the potential for dry lightning lessens given the much deeper vertical extend of the moisture profile. That said, high-based thunderstorms can result in lightning strikes well away from any wetting rainfall. All this said, the forecast remains complicated with low to moderate confidence in the development of convection across our region. As mentioned earlier: "The Sierra Nevada will also likely see numerous more lightning strikes, and with the ongoing large wildfires there, and very dry fuels across our interior; it is important we do our parts to prevent further wildfire starts, lightning or not."
The aforementioned monsoon moisture is forecast to continue to move northward during the day on Tuesday with diminishing chances of rain showers and/or thunderstorms. High pressure and the marine layer will return to being the dominate features impacting our region through the remainder of next week. Thus, look for cooler conditions near the coast with the typical ebb and flow of marine stratus while interior areas remain warm and dry. Be sure to stay up-to-date via social media and forecast discussions as we progress through the weekend as details will likely evolve.
as of 10:39am PDT Saturday...Northwesterly winds will continue to diminish this weekend, but gusty winds are still expected at times over the northern outer waters. The afternoons and the early evenings will see strong gusts funnel through the Golden Gate into San Francisco Bay. These strong gusts will generate steep waves resulting in hazardous seas conditions, particularly for smaller vessels. Despite winds diminishing, the seas state will be predominantly wind driven with a period of about 7 to 9 seconds. Light southerly swell persists through the weekend.
.MTR WATCHES/WARNINGS/ADVISORIES... .Tngt...SCA...Pt Arena to Pigeon Pt 10-60 nm from 9 PM SCA...SF Bay until 9 PM