Marine Weather and Tide Forecast for Broadmoor, CA

October 2, 2023 9:47 PM PDT (04:47 UTC)
Sunrise 7:05AM Sunset 6:53PM Moonrise 7:54PM Moonset 9:57AM
PZZ545 Coastal Waters From Point Reyes To Pigeon Point California Out To 10 Nm- 805 Pm Pdt Mon Oct 2 2023
Today..W winds around 5 knots...increasing to 5 to 10 knots this afternoon. Wind waves 1 ft. NW swell 4 to 6 ft at 18 seconds and S up to 2 ft at 13 seconds. Patchy dense fog this morning.
Tonight..NW winds 5 to 10 knots. Wind waves 1 to 2 ft. NW swell 3 to 5 ft at 18 seconds and S up to 2 ft at 12 seconds.
Tue..NW winds 5 to 10 knots. Wind waves 1 ft. W swell 3 to 5 ft at 16 seconds and S up to 2 ft at 11 seconds.
Tue night..NW winds 5 to 10 knots. Wind waves 1 ft. W swell 3 to 5 ft at 14 seconds and S up to 2 ft at 11 seconds.
Wed..NE winds 5 to 10 knots. Wind waves 1 ft. NW swell 4 to 6 ft at 13 seconds and S up to 2 ft at 12 seconds.
Wed night..N winds 5 to 10 knots. Wind waves 1 ft. NW swell 3 to 5 ft at 12 seconds and S up to 2 ft at 12 seconds.
Thu..NW winds 5 to 10 knots. Wind waves 1 ft. NW swell 2 to 4 ft and S up to 2 ft.
Fri..NW winds 5 to 10 knots. Wind waves 1 ft. Mixed swell W 2 to 3 ft and S 2 to 3 ft.
...san francisco bar/fourfathom bank forecast.....
in the deep water channel...mixed seas of 2 to 3 ft at 12 seconds.
across the bar...mixed seas of 3 to 4 ft at 12 seconds. Maximum ebb current of 1.5 kt at 08:16 am Tuesday and 3.9 kt at 07:38 pm Tuesday.
Today..W winds around 5 knots...increasing to 5 to 10 knots this afternoon. Wind waves 1 ft. NW swell 4 to 6 ft at 18 seconds and S up to 2 ft at 13 seconds. Patchy dense fog this morning.
Tonight..NW winds 5 to 10 knots. Wind waves 1 to 2 ft. NW swell 3 to 5 ft at 18 seconds and S up to 2 ft at 12 seconds.
Tue..NW winds 5 to 10 knots. Wind waves 1 ft. W swell 3 to 5 ft at 16 seconds and S up to 2 ft at 11 seconds.
Tue night..NW winds 5 to 10 knots. Wind waves 1 ft. W swell 3 to 5 ft at 14 seconds and S up to 2 ft at 11 seconds.
Wed..NE winds 5 to 10 knots. Wind waves 1 ft. NW swell 4 to 6 ft at 13 seconds and S up to 2 ft at 12 seconds.
Wed night..N winds 5 to 10 knots. Wind waves 1 ft. NW swell 3 to 5 ft at 12 seconds and S up to 2 ft at 12 seconds.
Thu..NW winds 5 to 10 knots. Wind waves 1 ft. NW swell 2 to 4 ft and S up to 2 ft.
Fri..NW winds 5 to 10 knots. Wind waves 1 ft. Mixed swell W 2 to 3 ft and S 2 to 3 ft.
...san francisco bar/fourfathom bank forecast.....
in the deep water channel...mixed seas of 2 to 3 ft at 12 seconds.
across the bar...mixed seas of 3 to 4 ft at 12 seconds. Maximum ebb current of 1.5 kt at 08:16 am Tuesday and 3.9 kt at 07:38 pm Tuesday.
PZZ500 805 Pm Pdt Mon Oct 2 2023
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries...
northwesterly winds generally continue to abate but small craft winds persist in the outer waters. Fresh to moderate winds through midweek, afterwards easing to become gentle to moderate and more northerly. Towards the late week, wave heights decrease. Moderate period (12-14 seconds) southerly swell persists through the week, alongside shorter period northwesterly swell (8-10 seconds). Longer period northwesterly swell moves into the waters towards Tuesday.
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries...
northwesterly winds generally continue to abate but small craft winds persist in the outer waters. Fresh to moderate winds through midweek, afterwards easing to become gentle to moderate and more northerly. Towards the late week, wave heights decrease. Moderate period (12-14 seconds) southerly swell persists through the week, alongside shorter period northwesterly swell (8-10 seconds). Longer period northwesterly swell moves into the waters towards Tuesday.

Area Discussion for - San Francisco/Monterey Bay Area, CA
  (on/off)  HelpNOTE: mouseover dotted underlined text for definition
FXUS66 KMTR 030347 AFDMTR
Area Forecast Discussion National Weather Service San Francisco CA 847 PM PDT Mon Oct 2 2023
New UPDATE
SYNOPSIS
Issued at 100 PM PDT Mon Oct 2 2023
Near normal temperatures will increase to well above average Wednesday through Saturday as high pressure becomes the dominant feature.
UPDATE
Issued at 847 PM PDT Mon Oct 2 2023
No significant short term updates needed this evening. Current satellite shows some high clouds spilling over the ridge and into far Northern California. Closer to the Bay Area a patch of stratus is over the ocean from the Sonoma coast southward to Half Moon Bay. Also seeing some signs on the fog product of some fog and low clouds starting to develop in the Berkeley hills while the usual low clouds are starting to gather in the Monterey Bay region with Salinas holding a 800 foot cloud deck.
All eyes on developing offshore wind pattern and associated dominate 500 mb ridge offshore. As the 00z guidance trickles in not seeing any big changes. Overnight into Tuesday a weak system will pass through Oregon, once this shortwave dives into the Great Basin the offshore surface pressure gradients will start to organize. So expect further warming tomorrow with widespread 70s and lower 80s assuming we get full sunshine and not a thin cirrus deck which could shave a few degrees off forecast highs.
Tomorrow night by around 06z we'll see the Northeast offshore winds start to show up in the Napa hills but wind speeds only in the 10-20 mph range with gusts 25-30 mph while humidity values stay in the 30-50% or moderate range overnight. Persistent but light offshore winds will continue on Wednesday that will really help with adiabatic compression and downslope warming as temperatures should soar into the upper 80s to mid 90s across much of the Bay Area as humidity values range from 20-30%. So fire weather concerns will be elevated with moderate heat risk for sensitive groups but we are lacking any strong wind episodes to raise significant fire weather concerns.
No big changes for Thursday which may be the hottest day with widespread upper 80s to mid 90s with continued low humidity and light offshore winds.
SHORT TERM
(This evening through Tuesday)
Issued at 100 PM PDT Mon Oct 2 2023
California is currently situated under a N-S meridional jet stream with a deep trough approaching the Rockies and high pressure over the NE Pacific. While this northerly flow is advecting cooler air, it's also keeping skies pretty clear and allowing for good day-time surface heating. Overall, the temperatures today will be near normal for this time of year. The marine layer was disrupted as the weather system passed this weekend, and has been confined to the immediate coast today. Light to gentle offshore winds this week should support this trend for the next several days. Without the typical cooling influence of the marine layer, coastal areas will begin see temperatures start to climb above normal. Temperatures will be roughly 5 degrees warmer on Tuesday with more warming to come later in the week.
Building high pressure overnight may support another round of fog Tue morning. Dew points will be similar and winds should be even lighter than this morning. With the missing marine layer, this isn't a slam dunk forecast, but a nocturnal inversion and good radiational cooling could support shallow valley fog. We'll be keeping an eye on the Sonoma Valley, Monterey Bay Area and the Salinas Valley.
LONG TERM
(Tuesday night through next Sunday)
Issued at 100 PM PDT Mon Oct 2 2023
The real warm-up begins on Wednesday. Afternoon temperatures will run 5-10 degrees above normal on Wed and 10-15 degrees above normal from Thu through Fri. During this time, expect coastal areas to get into the high 70s to mid 80s with inland areas in the mid 80s to mid 90s.Thankfully clear skies, low humidity, and longer nights will allow decent cooling into the upper 50s/lower 60s. This is helping keep the heat risk level moderate. For those without air conditioning, this will be a good week to open the windows at night and close them during the day.
We made some broad and some specific edits to the forecast today.
After looking at multi-model consensus data, a group decision was made that the old forecast was not quite capturing the potential for coastal heating due to offshore winds keeping the marine layer over the water. There was a pretty big spread in the guidance for Thu-Sat and the broad scale forecast used the 75th percentile max temp from a combination of several deterministic and ensemble forecast systems. In addition, specific edits were made to the city of San Francisco, bumping the expected temperatures from the low 80s to the mid 80s on Thu and Fri. Widespread cooling is expected from Sun-Mon as the next long wave trough moves through.
This next system may bring another round of precipitation to the Bay Area on Columbus Day, but it's a little too early to get into specifics.
With warmer weather comes fire weather concerns. There does seem to be a period of moderate offshore winds in the North Bay's Vaca and Mayacamas Mountains on Tuesday and Wednesday. Minimum relative humidities will be in the mid to upper 30s Tuesday and dry to the mid to upper 20s from Wednesday to Friday. As the center of the ridge builds, winds will be light later in the week.
The only day with the right combination of dry conditions and enough wind is Wednesday. Even then, the threat is marginal due to non-critical RH values and only moderate, short duration winds Wed morning.
AVIATION
(00Z TAFS)
Issued at 422 PM PDT Mon Oct 2 2023
VFR throughout the region with areas of a few/sct high clouds.
Winds remain breezy near coastal gaps and valleys but otherwise onshore winds are relatively moderate to light. Coastal gaps and valleys are expected to become light to moderate overnight with a return of moderate to breezy conditions tomorrow afternoon. The marine layer has compressed, therefore expect VFR to prevail for all terminals north of Monterey Bay, where CIG and visibility may become LIFR criteria. There may be a slight chance of fog and low cigs for KSTS, as some models suggested LIFR conditions overnight/early tomorrow morning, but had low confidence to include in TAFs.
Vicinity of SFO...VFR conditions continue with breezy to moderate onshore winds. Winds are expected to become light overnight with a return of breezy conditions up to 12 knots tomorrow afternoon.
Expect VFR to prevail through the TAF period.
SFO Bridge Approach...Similar to SFO.
Monterey Bay Terminals...VFR through the remainder of the day but stratus and low visibility is expected to return with MVFR ceilings tonight then lower overnight/early tomorrow morning creating LIFR conditions. Visibilities may get down to 1/2SM but had low confidence to include in TAF at this moment. Expect VFR to return near 17-18Z tomorrow morning with the return of moderate to breezy winds in the
MARINE
(Tonight through next Saturday)
Issued at 422 PM PDT Mon Oct 2 2023
Northwesterly winds generally continue to abate, with fresh to moderate winds through midweek, afterwards easing to become gentle to moderate and more northerly. Towards the late week, wave heights decrease. Moderate period (12-14 seconds) southerly swell persists through the week, alongside shorter period northwesterly swell (8-10 seconds). Longer period northwesterly swell moves into the waters towards Tuesday.
CLIMATE
Record high data for this week:
Location Oct 4th Oct 5th Oct 6th ------------------------------------------------------------------ Santa Rosa 101 1920 103 1933 102 1930 Kentfield 99 1987 100 1987 97 1930 Napa 100 1987 101 1987 96 1930 Richmond 99 1987 99 1987 91 1996 Livermore 106 1980 100 1980 100 2014 San Francisco 100 1987 102 1987 94 1992 SFO 95 1987 99 1987 92 1992 Redwood City 101 1980 99 1987 99 1987 Half Moon Bay 87 1953 82 2013 87 1972 Oakland City 92 2014 96 1987 93 1976 Salinas 100 1987 105 1987 95 1972 King City 106 1944 105 1933 100 1996
MTR WATCHES/WARNINGS/ADVISORIES
CA...None.
PZ...Small Craft Advisory until 9 PM PDT Tuesday for PZZ570.
Small Craft Advisory from 3 AM to 3 PM PDT Tuesday for PZZ575.
Area Forecast Discussion National Weather Service San Francisco CA 847 PM PDT Mon Oct 2 2023
New UPDATE
SYNOPSIS
Issued at 100 PM PDT Mon Oct 2 2023
Near normal temperatures will increase to well above average Wednesday through Saturday as high pressure becomes the dominant feature.
UPDATE
Issued at 847 PM PDT Mon Oct 2 2023
No significant short term updates needed this evening. Current satellite shows some high clouds spilling over the ridge and into far Northern California. Closer to the Bay Area a patch of stratus is over the ocean from the Sonoma coast southward to Half Moon Bay. Also seeing some signs on the fog product of some fog and low clouds starting to develop in the Berkeley hills while the usual low clouds are starting to gather in the Monterey Bay region with Salinas holding a 800 foot cloud deck.
All eyes on developing offshore wind pattern and associated dominate 500 mb ridge offshore. As the 00z guidance trickles in not seeing any big changes. Overnight into Tuesday a weak system will pass through Oregon, once this shortwave dives into the Great Basin the offshore surface pressure gradients will start to organize. So expect further warming tomorrow with widespread 70s and lower 80s assuming we get full sunshine and not a thin cirrus deck which could shave a few degrees off forecast highs.
Tomorrow night by around 06z we'll see the Northeast offshore winds start to show up in the Napa hills but wind speeds only in the 10-20 mph range with gusts 25-30 mph while humidity values stay in the 30-50% or moderate range overnight. Persistent but light offshore winds will continue on Wednesday that will really help with adiabatic compression and downslope warming as temperatures should soar into the upper 80s to mid 90s across much of the Bay Area as humidity values range from 20-30%. So fire weather concerns will be elevated with moderate heat risk for sensitive groups but we are lacking any strong wind episodes to raise significant fire weather concerns.
No big changes for Thursday which may be the hottest day with widespread upper 80s to mid 90s with continued low humidity and light offshore winds.
SHORT TERM
(This evening through Tuesday)
Issued at 100 PM PDT Mon Oct 2 2023
California is currently situated under a N-S meridional jet stream with a deep trough approaching the Rockies and high pressure over the NE Pacific. While this northerly flow is advecting cooler air, it's also keeping skies pretty clear and allowing for good day-time surface heating. Overall, the temperatures today will be near normal for this time of year. The marine layer was disrupted as the weather system passed this weekend, and has been confined to the immediate coast today. Light to gentle offshore winds this week should support this trend for the next several days. Without the typical cooling influence of the marine layer, coastal areas will begin see temperatures start to climb above normal. Temperatures will be roughly 5 degrees warmer on Tuesday with more warming to come later in the week.
Building high pressure overnight may support another round of fog Tue morning. Dew points will be similar and winds should be even lighter than this morning. With the missing marine layer, this isn't a slam dunk forecast, but a nocturnal inversion and good radiational cooling could support shallow valley fog. We'll be keeping an eye on the Sonoma Valley, Monterey Bay Area and the Salinas Valley.
LONG TERM
(Tuesday night through next Sunday)
Issued at 100 PM PDT Mon Oct 2 2023
The real warm-up begins on Wednesday. Afternoon temperatures will run 5-10 degrees above normal on Wed and 10-15 degrees above normal from Thu through Fri. During this time, expect coastal areas to get into the high 70s to mid 80s with inland areas in the mid 80s to mid 90s.Thankfully clear skies, low humidity, and longer nights will allow decent cooling into the upper 50s/lower 60s. This is helping keep the heat risk level moderate. For those without air conditioning, this will be a good week to open the windows at night and close them during the day.
We made some broad and some specific edits to the forecast today.
After looking at multi-model consensus data, a group decision was made that the old forecast was not quite capturing the potential for coastal heating due to offshore winds keeping the marine layer over the water. There was a pretty big spread in the guidance for Thu-Sat and the broad scale forecast used the 75th percentile max temp from a combination of several deterministic and ensemble forecast systems. In addition, specific edits were made to the city of San Francisco, bumping the expected temperatures from the low 80s to the mid 80s on Thu and Fri. Widespread cooling is expected from Sun-Mon as the next long wave trough moves through.
This next system may bring another round of precipitation to the Bay Area on Columbus Day, but it's a little too early to get into specifics.
With warmer weather comes fire weather concerns. There does seem to be a period of moderate offshore winds in the North Bay's Vaca and Mayacamas Mountains on Tuesday and Wednesday. Minimum relative humidities will be in the mid to upper 30s Tuesday and dry to the mid to upper 20s from Wednesday to Friday. As the center of the ridge builds, winds will be light later in the week.
The only day with the right combination of dry conditions and enough wind is Wednesday. Even then, the threat is marginal due to non-critical RH values and only moderate, short duration winds Wed morning.
AVIATION
(00Z TAFS)
Issued at 422 PM PDT Mon Oct 2 2023
VFR throughout the region with areas of a few/sct high clouds.
Winds remain breezy near coastal gaps and valleys but otherwise onshore winds are relatively moderate to light. Coastal gaps and valleys are expected to become light to moderate overnight with a return of moderate to breezy conditions tomorrow afternoon. The marine layer has compressed, therefore expect VFR to prevail for all terminals north of Monterey Bay, where CIG and visibility may become LIFR criteria. There may be a slight chance of fog and low cigs for KSTS, as some models suggested LIFR conditions overnight/early tomorrow morning, but had low confidence to include in TAFs.
Vicinity of SFO...VFR conditions continue with breezy to moderate onshore winds. Winds are expected to become light overnight with a return of breezy conditions up to 12 knots tomorrow afternoon.
Expect VFR to prevail through the TAF period.
SFO Bridge Approach...Similar to SFO.
Monterey Bay Terminals...VFR through the remainder of the day but stratus and low visibility is expected to return with MVFR ceilings tonight then lower overnight/early tomorrow morning creating LIFR conditions. Visibilities may get down to 1/2SM but had low confidence to include in TAF at this moment. Expect VFR to return near 17-18Z tomorrow morning with the return of moderate to breezy winds in the
MARINE
(Tonight through next Saturday)
Issued at 422 PM PDT Mon Oct 2 2023
Northwesterly winds generally continue to abate, with fresh to moderate winds through midweek, afterwards easing to become gentle to moderate and more northerly. Towards the late week, wave heights decrease. Moderate period (12-14 seconds) southerly swell persists through the week, alongside shorter period northwesterly swell (8-10 seconds). Longer period northwesterly swell moves into the waters towards Tuesday.
CLIMATE
Record high data for this week:
Location Oct 4th Oct 5th Oct 6th ------------------------------------------------------------------ Santa Rosa 101 1920 103 1933 102 1930 Kentfield 99 1987 100 1987 97 1930 Napa 100 1987 101 1987 96 1930 Richmond 99 1987 99 1987 91 1996 Livermore 106 1980 100 1980 100 2014 San Francisco 100 1987 102 1987 94 1992 SFO 95 1987 99 1987 92 1992 Redwood City 101 1980 99 1987 99 1987 Half Moon Bay 87 1953 82 2013 87 1972 Oakland City 92 2014 96 1987 93 1976 Salinas 100 1987 105 1987 95 1972 King City 106 1944 105 1933 100 1996
MTR WATCHES/WARNINGS/ADVISORIES
CA...None.
PZ...Small Craft Advisory until 9 PM PDT Tuesday for PZZ570.
Small Craft Advisory from 3 AM to 3 PM PDT Tuesday for PZZ575.
toggle option: (graph/table)
Airport Reports
EDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Temp | DewPt | RH | inHg |
KSFO SAN FRANCISCO INTL,CA | 14 sm | 51 min | NW 12G20 | 10 sm | A Few Clouds | 57°F | 54°F | 88% | 30.03 | |
KHAF HALF MOON BAY,CA | 17 sm | 12 min | N 04 | 6 sm | Overcast | Mist | 54°F | 54°F | 100% | 30.06 |
KOAK METROPOLITAN OAKLAND INTL,CA | 20 sm | 54 min | NW 07 | 10 sm | Partly Cloudy | 57°F | 55°F | 94% | 30.04 | |
KSQL SAN CARLOS,CA | 24 sm | 12 min | no data | -- |
Wind History from SFO
(wind in knots)San Francisco Bar
Click for Map
Mon -- 02:00 AM PDT 4.92 feet High Tide
Mon -- 07:06 AM PDT Sunrise
Mon -- 07:10 AM PDT 1.96 feet Low Tide
Mon -- 10:57 AM PDT Moonset
Mon -- 01:25 PM PDT 6.07 feet High Tide
Mon -- 06:52 PM PDT Sunset
Mon -- 08:06 PM PDT -0.26 feet Low Tide
Mon -- 08:54 PM PDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 02:00 AM PDT 4.92 feet High Tide
Mon -- 07:06 AM PDT Sunrise
Mon -- 07:10 AM PDT 1.96 feet Low Tide
Mon -- 10:57 AM PDT Moonset
Mon -- 01:25 PM PDT 6.07 feet High Tide
Mon -- 06:52 PM PDT Sunset
Mon -- 08:06 PM PDT -0.26 feet Low Tide
Mon -- 08:54 PM PDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
San Francisco Bar, California, Tide feet
12 am |
3.9 |
1 am |
4.6 |
2 am |
4.9 |
3 am |
4.7 |
4 am |
3.9 |
5 am |
3.1 |
6 am |
2.3 |
7 am |
2 |
8 am |
2.1 |
9 am |
2.8 |
10 am |
3.7 |
11 am |
4.7 |
12 pm |
5.5 |
1 pm |
6 |
2 pm |
6 |
3 pm |
5.3 |
4 pm |
4 |
5 pm |
2.5 |
6 pm |
1.1 |
7 pm |
0.1 |
8 pm |
-0.3 |
9 pm |
-0 |
10 pm |
0.6 |
11 pm |
1.6 |
Tide / Current for South Channel, San Francisco Bay Approach, California Current
EDIT (on/off)  HelpSouth Channel
Click for Map
Mon -- 03:20 AM PDT -0.00 knots Slack
Mon -- 05:41 AM PDT -1.22 knots Max Ebb
Mon -- 07:06 AM PDT Sunrise
Mon -- 08:40 AM PDT 0.00 knots Slack
Mon -- 10:57 AM PDT Moonset
Mon -- 11:31 AM PDT 1.20 knots Max Flood
Mon -- 02:45 PM PDT -0.01 knots Slack
Mon -- 05:54 PM PDT -1.95 knots Max Ebb
Mon -- 06:51 PM PDT Sunset
Mon -- 08:53 PM PDT Moonrise
Mon -- 09:27 PM PDT 0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 03:20 AM PDT -0.00 knots Slack
Mon -- 05:41 AM PDT -1.22 knots Max Ebb
Mon -- 07:06 AM PDT Sunrise
Mon -- 08:40 AM PDT 0.00 knots Slack
Mon -- 10:57 AM PDT Moonset
Mon -- 11:31 AM PDT 1.20 knots Max Flood
Mon -- 02:45 PM PDT -0.01 knots Slack
Mon -- 05:54 PM PDT -1.95 knots Max Ebb
Mon -- 06:51 PM PDT Sunset
Mon -- 08:53 PM PDT Moonrise
Mon -- 09:27 PM PDT 0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
South Channel, San Francisco Bay Approach, California Current, knots
12 am |
1.6 |
1 am |
1.4 |
2 am |
0.9 |
3 am |
0.3 |
4 am |
-0.5 |
5 am |
-1.1 |
6 am |
-1.2 |
7 am |
-0.9 |
8 am |
-0.4 |
9 am |
0.2 |
10 am |
0.8 |
11 am |
1.1 |
12 pm |
1.2 |
1 pm |
0.9 |
2 pm |
0.5 |
3 pm |
-0.2 |
4 pm |
-1.1 |
5 pm |
-1.7 |
6 pm |
-1.9 |
7 pm |
-1.7 |
8 pm |
-1.1 |
9 pm |
-0.4 |
10 pm |
0.4 |
11 pm |
1.1 |
San Francisco Bay Area, CA,

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