Marine Weather and Tides
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
|Sunrise 7:21AM||Sunset 5:18PM||Friday January 17, 2020 5:54 PM PST (01:54 UTC)||Moonrise 12:32AM||Moonset 12:18PM||Illumination 47%|
7 Day Forecast for Marine Location Near Point Arena, CAHourly EDIT Help
Area Discussion for - San Francisco/Monterey Bay Area, CA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS66 KMTR 172357 AFDMTR
Area Forecast Discussion National Weather Service San Francisco Bay Area 357 PM PST Fri Jan 17 2020
SYNOPSIS. High pressure building over the west coast will lead to dry and seasonable weather. Quiet weather continues Saturday and Sunday with plenty of sunshine and daytime highs in the 50s. Increasing clouds by Monday leading to a chance of light rain early next week.
DISCUSSION. as of 1:38 PM PST Friday . High clouds are filtering the sunshine across the district, but area temperatures are trending warmer than yesterday at this time with readings from the upper 40s to the mid 50s. Under partly cloudy skies tonight, locally dense fog is expected to form in some of the inland valleys tonight, particularly in the East Bay Valleys as a light offshore flow could advect Tule fog westward. Aside from night and morning fog, seasonably mild weather is expected through the weekend with highs in the 50s to lower 60s and overnight lows in the mid 30s to mid 40s.
The next chance of rain could be on Tuesday and Wednesday when a short-wave trough moves onshore across Northern California. Medium range models build another ridge along the coast. Then another system is possible a week out, but there is still a lot of noise in the ensemble members. Therefore, there still remains a lot of uncertainty in the extended forecast at this time.
AVIATION. as of 4:00 PM PST Friday . High pressure building over the district and low pressure off the Pacific Northwest will result in light winds during the daytime and light drainage offshore winds at night. A few afternoon cumulus clouds remain as there is still some residual low-level moisture. Increasing high clouds tonight but remaining VFR except for fog in the North Bay valleys.
Vicinity of KSFO . VFR with a few cumulus clouds until dark. Light offshore winds under 10 kt.
SFO Bridge Approach . Similar to KSFO.
Monterey Bay Terminals . VFR. Light onshore flow will switch to southeast tonight.
MARINE. as of 03:45 PM PST Friday . A high pressure is aligned over the coastal waters, bringing locally breezy southeasterly winds along the coast and northern outer waters with lighter variable winds elsewhere. These winds will persist through the weekend before strengthening and turning predominately southerly by Monday morning ahead of an approaching front. A moderate northwest swell will arrive late Saturday and Sunday while a larger northwest swell arrives the middle of next week. The swell in excess of 10 feet may be hazardous for small craft vessels.
MTR WATCHES/WARNINGS/ADVISORIES. Tngt. NONE.
PUBLIC FORECAST: Sims AVIATION: W Pi MARINE: W Pi
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GEOS Local Image of CentralWestCoast EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (20,4,5,8)(on/off)  Help
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