Coastal Flood Advisory
Starts in 2 days 7 h
When
From 9 AM Monday to 3 PM PDT Thursday.
Where
Pacific Coast.
Issued for this forecast zone · National Weather Service San Francisco CA
What, impacts and precautionsHide details
What
Up to 1.9ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways.
Impacts
High tides will result in flooding of low-lying infrastructure, isolated road closures, and coastal erosion. Rising tides will bring water and waves farther up the beach than normal, restricting escape from beaches and coastal areas.
Additional details
At the San Francisco tidal gauge, high tide is expected to be 1.7 ft above normal (7.5 ft MLLW) at 11:39 AM Monday 10/26, 1.8 ft above normal (7.6 ft MLLW) at 12:15 PM Tuesday 10/27, 1.9 ft above normal (7.7 ft MLLW) at 12:56 PM Wednesday 10/28, and 1.7 ft above normal (7.5 ft MLLW) at 01:43 PM Thursday 10/29. These predictions include up to 1.0 ft of surge that will enhance the astronomical tide and flooding threat.High tide varies up to 90 minutes earlier or later along the Pacific Coast and through the San Francisco Bay, respectively.
Precautionary actions
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.
Areas: Coastal North Bay Including Point Reyes National Seashore; San Francisco Peninsula Coast
See it on weather.gov (opens in a new tab)

Observed 1:20 AM PDT at KSTS

Sereno del Mar, CA weather

Clear and 52°11°.

Forecasts differ

Now 52°11°

Clear

Wind: 3 mph5 km/h; From the west. Light through 1 PM
Dew point: 46°8°; Comfortable · down to 38°3° by 5 AM
UV index: 0Low; Moderate 11 AM–5 PM · peak 5
Air quality: 49Good; Main pollutant: PM2.5 (fine particles)
Pressure: 30.04 inHg1017 hPa; Steady over the next 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Low 49°9° tonight at 5 AM
High 63°17° today at 3 PM
Below 60°16° today after 5 PM

TonightNear 51°11° · Clear
This morningUp to 59°15° by 11 AM · Clear
This afternoonNear 60°16° · Clear
TonightDown to 48°9° by 3 AM · Partly cloudy
Tomorrow morningUp to 56°13° by 11 AM · Mostly cloudy
Tomorrow afternoonNear 58°14° · Mostly cloudy
Tomorrow nightDown to 50°10° by 11 PM · Partly cloudy

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 1a	Clear	52°11° (likely 50°10° to 59°15°)	52°11°	0%	3 mph5 km/h from N, gusts 6 mph10 km/h	69%	11%	0
Sat 2a	Clear	51°11° (likely 49°9° to 59°15°)	51°11°	0%	3 mph5 km/h from N, gusts 3 mph5 km/h	70%	10%	0
Sat 3a	Clear	50°10° (likely 48°9° to 57°14°)	50°10°	0%	2 mph3 km/h from N, gusts 4 mph6 km/h	71%	10%	0
Sat 4a	Clear	50°10° (likely 48°9° to 59°15°)	50°10°	0%	2 mph3 km/h from N, gusts 5 mph8 km/h	69%	10%	0
Sat 5a	Clear	49°9° (likely 48°9° to 59°15°)	49°9°	0%	2 mph3 km/h from N, gusts 7 mph11 km/h	66%	9%	0
Sat 6a	Clear	50°10° (likely 47°8° to 56°13°)	50°10°	0%	2 mph3 km/h from N, gusts 7 mph11 km/h	65%	7%	0
Sat 7a	Clear	49°9° (likely 47°8° to 56°13°)	49°9°	0%	2 mph3 km/h from N, gusts 7 mph12 km/h	61%	6%	0
Sat 8a	Sunny	49°9° (likely 47°8° to 59°15°)	49°9°	0%	2 mph3 km/h from N, gusts 7 mph12 km/h	61%	5%	0
Sat 9a	Sunny	53°12° (likely 51°11° to 63°17°)	53°12°	0%	2 mph3 km/h from NNE, gusts 4 mph7 km/h	61%	0%	1
Sat 10a	Sunny	57°14° (likely 57°14° to 66°19°)	57°14°	0%	2 mph3 km/h from NNE, gusts 4 mph6 km/h	62%	0%	2
Sat 11a	Sunny	59°15° (likely 59°15° to 68°20°)	59°15°	0%	2 mph3 km/h from SW, gusts 4 mph6 km/h	61%	0%	3
Sat 12p	Sunny	61°16° (likely 61°16° to 71°22°)	61°16°	0%	2 mph3 km/h from WSW, gusts 6 mph9 km/h	61%	0%	4
Sat 1p	Sunny	62°17° (likely 62°17° to 71°22°)	62°17°	0%	3 mph5 km/h from W, gusts 8 mph13 km/h	61%	0%	5
Sat 2p	Sunny	62°17° (likely 62°17° to 71°22°)	62°17°	0%	5 mph8 km/h from W, gusts 10 mph16 km/h	62%	0%	5
Sat 3p	Sunny	63°17° (likely 63°17° to 70°21°)	63°17°	0%	6 mph10 km/h from W, gusts 11 mph18 km/h	64%	1%	4
Sat 4p	Sunny	61°16° (likely 61°16° to 69°21°)	61°16°	0%	6 mph10 km/h from W, gusts 10 mph17 km/h	66%	0%	3
Sat 5p	Mostly sunny	59°15° (likely 59°15° to 66°19°)	59°15°	0%	6 mph10 km/h from W, gusts 10 mph17 km/h	76%	15%	2
Sat 6p	Clear	57°14° (likely 57°14° to 62°17°)	57°14°	0%	5 mph8 km/h from W, gusts 9 mph15 km/h	83%	40%	1
Sat 7p	Mostly clear	53°12° (likely 53°12° to 59°15°)	53°12°	0%	3 mph5 km/h from W, gusts 8 mph13 km/h	83%	46%	0
Sat 8p	Mostly clear	52°11° (likely 52°11° to 57°14°)	52°11°	0%	2 mph3 km/h from W, gusts 7 mph11 km/h	83%	49%	0
Sat 9p	Clear	51°11° (likely 51°11° to 57°14°)	51°11°	0%	2 mph3 km/h from W, gusts 6 mph9 km/h	83%	17%	0
Sat 10p	Clear	51°11° (likely 51°11° to 56°13°)	51°11°	0%	2 mph3 km/h from W, gusts 5 mph7 km/h	83%	20%	0
Sat 11p	Clear	50°10° (likely 50°10° to 56°13°)	51°11°	0%	1 mph2 km/h from W, gusts 4 mph7 km/h	83%	21%	0
Sun 12a	Partly cloudy	50°10° (likely 49°9° to 55°13°)	51°11°	0%	1 mph2 km/h from NW, gusts 3 mph5 km/h	79%	34%	0
Sun 1a	Cloudy	50°10° (likely 48°9° to 55°13°)	50°10°	0%	1 mph2 km/h from NW, gusts 4 mph6 km/h	78%	59%	0
Sun 2a	Cloudy	49°9° (likely 47°8° to 54°12°)	49°9°	0%	1 mph2 km/h from N, gusts 4 mph7 km/h	80%	59%	0
Sun 3a	Partly cloudy	48°9° (likely 47°8° to 53°12°)	48°9°	0%	1 mph2 km/h from NNE, gusts 4 mph7 km/h	81%	47%	0
Sun 4a	Mostly clear	48°9° (likely 46°8° to 52°11°)	48°9°	0%	1 mph2 km/h from NNE, gusts 4 mph6 km/h	80%	66%	0
Sun 5a	Cloudy	48°9° (likely 46°8° to 52°11°)	48°9°	0%	2 mph3 km/h from NNE, gusts 4 mph6 km/h	76%	68%	0
Sun 6a	Partly cloudy	47°8° (likely 46°8° to 51°11°)	47°8°	0%	2 mph3 km/h from NNE, gusts 4 mph6 km/h	76%	70%	0
Sun 7a	Partly cloudy	47°8° (likely 46°8° to 51°11°)	47°8°	0%	2 mph3 km/h from NNE, gusts 4 mph6 km/h	71%	70%	0
Sun 8a	Partly sunny	47°8° (likely 46°8° to 52°11°)	47°8°	0%	2 mph3 km/h from ENE, gusts 4 mph7 km/h	71%	73%	0
Sun 9a	Partly sunny	50°10° (likely 48°9° to 55°13°)	51°11°	0%	2 mph3 km/h from ENE, gusts 5 mph8 km/h	69%	74%	1
Sun 10a	Partly sunny	54°12° (likely 52°11° to 60°16°)	54°12°	0%	2 mph3 km/h from ENE, gusts 7 mph11 km/h	73%	74%	2
Sun 11a	Partly sunny	56°13° (likely 56°13° to 64°18°)	56°13°	0%	3 mph5 km/h from S, gusts 6 mph10 km/h	72%	75%	3
Sun 12p	Partly sunny	58°14° (likely 56°13° to 66°19°)	59°15°	0%	3 mph5 km/h from S, gusts 5 mph9 km/h	69%	75%	4
Sun 1p	Partly sunny	60°16° (likely 57°14° to 69°21°)	60°16°	0%	3 mph5 km/h from S, gusts 6 mph10 km/h	69%	78%	4
Sun 2p	Partly sunny	60°16° (likely 57°14° to 69°21°)	60°16°	0%	5 mph8 km/h from WSW, gusts 8 mph13 km/h	69%	76%	4
Sun 3p	Partly sunny	61°16° (likely 56°13° to 68°20°)	61°16°	0%	5 mph8 km/h from WSW, gusts 9 mph14 km/h	71%	86%	3
Sun 4p	Cloudy	60°16° (likely 56°13° to 66°19°)	60°16°	0%	5 mph8 km/h from WSW, gusts 9 mph15 km/h	72%	88%	3
Sun 5p	Cloudy	58°14° (likely 55°13° to 63°17°)	58°14°	0%	3 mph5 km/h from W, gusts 11 mph17 km/h	80%	88%	2
Sun 6p	Cloudy	56°13° (likely 55°13° to 60°16°)	56°13°	0%	3 mph5 km/h from W, gusts 11 mph17 km/h	89%	91%	0
Sun 7p	Mostly cloudy	54°12° (likely 53°12° to 57°14°)	54°12°	0%	3 mph5 km/h from W, gusts 12 mph19 km/h	91%	57%	0
Sun 8p	Partly cloudy	52°11° (likely 52°11° to 55°13°)	52°11°	0%	2 mph3 km/h from W, gusts 12 mph19 km/h	90%	53%	0
Sun 9p	Partly cloudy	51°11° (likely 51°11° to 54°12°)	51°11°	0%	2 mph3 km/h from W, gusts 13 mph20 km/h	89%	41%	0
Sun 10p	Partly cloudy	51°11° (likely 50°10° to 54°12°)	51°11°	0%	2 mph3 km/h from W, gusts 11 mph18 km/h	88%	32%	0
Sun 11p	Clear	50°10° (likely 50°10° to 54°12°)	51°11°	0%	2 mph3 km/h from NW, gusts 9 mph14 km/h	87%	18%	0
Mon 12a	Clear	50°10° (likely 49°9° to 55°13°)	50°10°	0%	2 mph3 km/h from NW, gusts 3 mph4 km/h	88%	21%	0

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Sunny. High 64°18°, low 49°9°. Typical 66°19° / 47°8°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 48°9°
  Dry
Official NWS forecast
Today: Sunny. High near 64, with temperatures falling to around 59 in the afternoon. West northwest wind 2 to 6 mph.
Tonight: Clear, with a low around 49. North wind around 3 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
64°18°–72°22°
Low, likely
47°8°–52°11°
Typical high / low
66°19° / 47°8°
Wind
9 mph14 km/h, gusts 14 mph22 km/h
UV peak
5
Tomorrow, Oct 25. Partly sunny. High 62°17°, low 48°9°. Typical 66°19° / 46°8°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 48°9°
  Dry
Official NWS forecast
Day: Mostly sunny, with a high near 62. West southwest wind around 5 mph.
Night: Partly cloudy, with a low around 48. West northwest wind around 3 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
57°14°–69°21°
Low, likely
45°7°–51°11°
Typical high / low
66°19° / 46°8°
Wind
14 mph22 km/h, gusts 23 mph37 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 58°14°, low 46°8°. Typical 65°18° / 46°8°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 47°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 58.
Night: Mostly clear, with a low around 46.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
58°14°–66°19°
Low, likely
45°7°–52°11°
Typical high / low
65°18° / 46°8°
Wind
14 mph22 km/h, gusts 24 mph39 km/h
UV peak
5
Tuesday, Oct 27. Mostly sunny. High 58°14°, low 47°8°. Typical 65°18° / 46°8°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 48°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 58.
Night: Partly cloudy, with a low around 47.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
58°14°–67°19°
Low, likely
44°7°–50°10°
Typical high / low
65°18° / 46°8°
Wind
17 mph28 km/h
UV peak
4
Wednesday, Oct 28. Mostly cloudy. High 58°14°, low 48°9°. Typical 65°18° / 46°8°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 62°16°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 50°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 58.
Night: Mostly cloudy, with a low around 48.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
58°14°–64°18°
Low, likely
43°6°–50°10°
Typical high / low
65°18° / 46°8°
Wind
11 mph18 km/h
UV peak
4
Thursday, Oct 29. Cloudy. High 56°13°, low 48°9°. Typical 65°18° / 46°8°. Rain, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Clear, 55°13°
  20% chance
4. Overnight
  midnight–6 AM
  Clear, 49°10°
  20% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain after 5pm. Partly sunny, with a high near 56.
Night: A chance of rain. Mostly cloudy, with a low around 48.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
56°13°–62°17°
Low, likely
47°8°–52°11°
Typical high / low
65°18° / 46°8°
Wind
12 mph19 km/h, gusts 21 mph34 km/h
UV peak
4
Friday, Oct 30. Rain. High 57°14°, low 47°8°. Typical 64°18° / 46°8°. Rain 0.01 in0.3 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 49°9°
  30% chance
2. Afternoon
  noon–6 PM
  Cloudy, 59°15°
  30% chance
3. Evening
  6 PM–midnight
  Clear, 53°12°
  30% chance
4. Overnight
  midnight–6 AM
  Mostly clear, 46°8°
  20% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain. Partly sunny, with a high near 57.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
57°14°–61°16°
Low, likely
46°8°–49°9°
Typical high / low
64°18° / 46°8°
Wind
12 mph19 km/h, gusts 20 mph32 km/h
UV peak
4
Saturday, Oct 31. Sunny. High 62°17°, low 45°7°. Typical 64°18° / 46°8°. Rain 0.01 in0.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 48°9°
  30% chance
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  30% chance
3. Evening
  6 PM–midnight
  Clear, 55°13°
  30% chance
4. Overnight
  midnight–6 AM
  Clear, 47°8°
  30% chance
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
58°14°–65°18°
Low, likely
41°5°–48°9°
Typical high / low
64°18° / 46°8°
Wind
11 mph17 km/h, gusts 19 mph30 km/h
UV peak
3
Sunday, Nov 1. Sunny. High 66°19°, low 46°8°. Typical 64°18° / 46°8°. Rain, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 50°10°
  20% chance
2. Afternoon
  noon–6 PM
  Sunny, 68°20°
  20% chance
3. Evening
  6 PM–midnight
  Clear, 58°14°
  20% chance
4. Overnight
  midnight–6 AM
  Cloudy, 51°11°
  20% chance
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
60°16°–69°21°
Low, likely
37°3°–55°13°
Typical high / low
64°18° / 46°8°
Wind
9 mph14 km/h, gusts 15 mph23 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 64°18°, low 52°11°. Typical 64°18° / 46°8°. Rain 0.01 in0.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 55°13°
  30% chance
2. Afternoon
  noon–6 PM
  Cloudy, 67°19°
  30% chance
3. Evening
  6 PM–midnight
  Cloudy, 58°14°
  30% chance
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
60°16°–68°20°
Low, likely
47°8°–59°15°
Typical high / low
64°18° / 46°8°
Wind
10 mph15 km/h, gusts 22 mph36 km/h
UV peak
4

10 days15 days30 days

The outlook

Today
Dry, high 64°, low 49°.
Tomorrow
Dry, high 62°, low 48°.
Monday
Dry, high 58°, low 46°, cooling off.
Rest of week
Mostly dry, highs 56–66°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (MTR) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Russian River at Guerneville

9.0 mi

Below flood stage

Level: 4.3 ft
Flow: 154 cfs

Forecast peak 4.3 ft Sat 1 AM

Reading from Fri 11 PM · NWS gauge page

Russian River near Guerneville

12 mi

Below flood stage

Level: 1.8 ft
Flow: 185 cfs

Forecast peak 1.8 ft Sat 1 AM

Reading from Fri 11:15 PM · NWS gauge page

Laguna de Santa Rosa near Sebastopol

14 mi

Below flood stage

Level: 55.6 ft
Flow: 2 cfs

Forecast peak 55.5 ft Sat 1 AM

Reading from Fri 11:30 PM · NWS gauge page

Mark West Creek near Mirabel Heights

14 mi

Below flood stage

Level: 38.8 ft
Flow: 2 cfs

Forecast peak 38.7 ft Sat 1 AM

Reading from Fri 11:45 PM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 66% less heating than a typical week.

This week 23Typical 66

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 3
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at.

Comfort

Dry air outside (dew point 46°F).

Open the windows?

Today, 12:00 PM–4:00 PM

Good stretch to open the windows.

Is this typical?

Fort Ross · official normals 1991–2020 · records 1897–2026

Oct 24, today vs a typical year

Today’s expected high is 2°1° colder than typical.

Last 7 days vs normal

—SunOct 18
—MonOct 19
—TueOct 20
—WedOct 21
—ThuOct 22
—FriOct 23
—SatOct 24

Sereno del Mar weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 51 min; Losing 2 min 16 s a day; shortest Dec 21, 1 h 22 min less
Golden hour: 5:45–6:38 PM; Morning 7:13–8:07 AM
Blue hour: 6:38–6:48 PM; Morning 7:03–7:13 AM; first light 7:03 AM

Stars tonight? Good

Clear 1:42–7:03 AM; moon 96% lit, sets 5:52 AM.

Moon

Waxing gibbous

96% lit · growing

Today: sets 5:51 AM · rises 5:21 PM
Full moon: Oct 25
New moon: Nov 8

Looking west from Sereno del Mar. The highest point on the skyline is about 1,600 ft, 11 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

1 active weather alert

Coastal Flood Advisory

Sereno del Mar, CA weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Russian River at Guerneville

Russian River near Guerneville

Laguna de Santa Rosa near Sebastopol

Mark West Creek near Mirabel Heights

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Good

Moon