Coastal Flood Advisory
Ends in 5 days 1 h
When
Until 3 PM PDT Thursday.
Where
Bay Shoreline locations of San Francisco Bay, Monterey Bay and Big Sur 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 1.5 ft above normal (7.3 ft MLLW) at 11:07 AM Sunday 10/25, 1.6 ft above normal (7.4 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: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
See it on weather.gov (opens in a new tab)

Observed 12:55 PM PDT at KDVO

Penngrove, CA weather

Sunny and 77°25°, jacket by 8 PM.

Mostly agree

Now 77°25°

Sunny

Wind: 8 mph13 km/h; From the southeast. Up to 8 mph13 km/h through 1 AM
Dew point: 41°5°; Comfortable · up to 49°9° by 5 PM
UV index: 4Moderate; Moderate until 4 PM
Air quality: 27Good; Main pollutant: PM2.5 (fine particles)
Pressure: 30.02 inHg1017 hPa; Falling · −0.05 inHg−1.7 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Drops 12°7° today 5–8 PM (69°21° → 57°14°)
Below 60°16° tonight after 7 PM
Fog tonight 1–2 AM
Fog tomorrow 7–10 AM
Fog tomorrow night midnight–9 AM

This afternoonNear 70°21° · Clear
TonightDown to 44°7° by 5 AM · Partly cloudy
Tomorrow morningUp to 61°16° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 70°21° by 2 PM · Cloudy
Tomorrow nightDown to 42°6° by 5 AM · Partly cloudy
Monday morningUp to 59°15° by 11 AM · 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 1p	Sunny	71°22° (likely 69°21° to 73°23°)	71°22°	0%	1 mph2 km/h from WNW, gusts 6 mph10 km/h	40%	0%	4
Sat 2p	Sunny	74°23° (likely 71°22° to 76°24°)	74°23°	0%	1 mph2 km/h from W, gusts 6 mph10 km/h	38%	0%	4
Sat 3p	Sunny	72°22° (likely 71°22° to 74°23°)	72°22°	0%	3 mph5 km/h from W, gusts 12 mph20 km/h	39%	0%	3
Sat 4p	Sunny	71°22° (likely 68°20° to 71°22°)	71°22°	0%	6 mph10 km/h from W, gusts 13 mph21 km/h	45%	0%	2
Sat 5p	Sunny	69°21° (likely 65°18° to 69°21°)	69°21°	0%	7 mph11 km/h from W, gusts 12 mph19 km/h	48%	0%	2
Sat 6p	Clear	62°17° (likely 61°16° to 64°18°)	62°17°	0%	2 mph3 km/h from WSW, gusts 9 mph14 km/h	60%	0%	1
Sat 7p	Clear	57°14° (likely 56°13° to 59°15°)	57°14°	0%	0 mph0 km/h, gusts 6 mph10 km/h	75%	0%	0
Sat 8p	Clear	54°12° (likely 53°12° to 56°13°)	54°12°	0%	0 mph0 km/h, gusts 4 mph6 km/h	85%	0%	0
Sat 9p	Clear	52°11° (likely 51°11° to 54°12°)	52°11°	0%	0 mph0 km/h, gusts 3 mph5 km/h	90%	0%	0
Sat 10p	Clear	51°11° (likely 50°10° to 53°12°)	51°11°	0%	0 mph0 km/h, gusts 3 mph4 km/h	93%	2%	0
Sat 11p	Clear	50°10° (likely 49°9° to 52°11°)	50°10°	0%	0 mph0 km/h, gusts 3 mph5 km/h	93%	13%	0
Sun 12a	Mostly clear	50°10° (likely 49°9° to 51°11°)	50°10°	0%	0 mph0 km/h, gusts 4 mph6 km/h	91%	22%	0
Sun 1a	Fog	48°9° (likely 48°9° to 51°11°)	48°9°	0%	0 mph0 km/h, gusts 4 mph7 km/h	93%	41%	0
Sun 2a	Partly cloudy	48°9° (likely 47°8° to 50°10°)	48°9°	0%	0 mph0 km/h, gusts 3 mph4 km/h	93%	73%	0
Sun 3a	Fog	45°7° (likely 45°7° to 50°10°)	45°7°	0%	0 mph0 km/h, gusts 2 mph3 km/h	94%	87%	0
Sun 4a	Fog	45°7° (likely 45°7° to 49°9°)	45°7°	0%	0 mph0 km/h, gusts 2 mph3 km/h	93%	85%	0
Sun 5a	Cloudy	44°7° (likely 44°7° to 48°9°)	44°7°	0%	0 mph0 km/h, gusts 2 mph3 km/h	93%	80%	0
Sun 6a	Cloudy	42°6° (likely 42°6° to 47°8°)	42°6°	0%	0 mph0 km/h, gusts 2 mph4 km/h	92%	78%	0
Sun 7a	Fog	42°6° (likely 42°6° to 46°8°)	43°6°	0%	0 mph0 km/h, gusts 2 mph3 km/h	94%	63%	0
Sun 8a	Fog	43°6° (likely 42°6° to 47°8°)	43°6°	0%	0 mph0 km/h, gusts 2 mph3 km/h	96%	78%	0
Sun 9a	Fog	47°8° (likely 46°8° to 51°11°)	47°8°	0%	0 mph0 km/h, gusts 3 mph4 km/h	95%	83%	1
Sun 10a	Cloudy	54°12° (likely 54°12° to 58°14°)	54°12°	0%	1 mph2 km/h from SW, gusts 3 mph5 km/h	86%	84%	2
Sun 11a	Cloudy	61°16° (likely 60°16° to 62°17°)	61°16°	0%	1 mph2 km/h from SSE, gusts 4 mph7 km/h	73%	74%	3
Sun 12p	Cloudy	65°18° (likely 64°18° to 66°19°)	65°18°	0%	1 mph2 km/h from SSE, gusts 6 mph10 km/h	63%	83%	4
Sun 1p	Cloudy	68°20° (likely 67°19° to 70°21°)	68°20°	0%	2 mph3 km/h from S, gusts 6 mph9 km/h	55%	86%	4
Sun 2p	Cloudy	70°21° (likely 68°20° to 72°22°)	70°21°	0%	2 mph3 km/h from SSW, gusts 6 mph9 km/h	52%	86%	4
Sun 3p	Cloudy	69°21° (likely 69°21° to 70°21°)	69°21°	0%	3 mph5 km/h from WSW, gusts 9 mph14 km/h	52%	88%	3
Sun 4p	Cloudy	67°19° (likely 66°19° to 68°20°)	67°19°	0%	5 mph8 km/h from WSW, gusts 10 mph16 km/h	57%	86%	2
Sun 5p	Cloudy	66°19° (likely 63°17° to 66°19°)	66°19°	0%	5 mph8 km/h from W, gusts 10 mph17 km/h	58%	90%	1
Sun 6p	Cloudy	60°16° (likely 59°15° to 62°17°)	60°16°	0%	0 mph0 km/h, gusts 10 mph16 km/h	69%	85%	0
Sun 7p	Cloudy	56°13° (likely 56°13° to 58°14°)	56°13°	0%	0 mph0 km/h, gusts 8 mph13 km/h	82%	91%	0
Sun 8p	Partly cloudy	54°12° (likely 53°12° to 56°13°)	54°12°	0%	0 mph0 km/h, gusts 6 mph9 km/h	90%	56%	0
Sun 9p	Clear	52°11° (likely 51°11° to 54°12°)	52°11°	0%	0 mph0 km/h, gusts 5 mph8 km/h	97%	22%	0
Sun 10p	Clear	51°11° (likely 50°10° to 53°12°)	51°11°	0%	0 mph0 km/h, gusts 5 mph7 km/h	99%	18%	0
Sun 11p	Clear	50°10° (likely 49°9° to 52°11°)	50°10°	0%	0 mph0 km/h, gusts 5 mph8 km/h	100%	21%	0
Mon 12a	Fog	49°9° (likely 49°9° to 51°11°)	49°9°	0%	0 mph0 km/h, gusts 5 mph7 km/h	100%	36%	0
Mon 1a	Fog	48°9° (likely 48°9° to 51°11°)	48°9°	0%	0 mph0 km/h, gusts 4 mph7 km/h	100%	43%	0
Mon 2a	Fog	46°8° (likely 46°8° to 51°11°)	46°8°	0%	0 mph0 km/h, gusts 3 mph4 km/h	100%	47%	0
Mon 3a	Fog	46°8° (likely 45°7° to 51°11°)	46°8°	0%	0 mph0 km/h, gusts 4 mph6 km/h	100%	57%	0
Mon 4a	Fog	45°7° (likely 45°7° to 50°10°)	45°7°	0%	0 mph0 km/h, gusts 3 mph6 km/h	100%	43%	0
Mon 5a	Fog	42°6° (likely 42°6° to 50°10°)	42°6°	0%	1 mph2 km/h from WNW, gusts 3 mph5 km/h	100%	47%	0
Mon 6a	Fog	44°7° (likely 44°7° to 50°10°)	44°7°	0%	1 mph2 km/h from WNW, gusts 4 mph7 km/h	100%	45%	0
Mon 7a	Fog	44°7° (likely 44°7° to 49°9°)	44°7°	0%	1 mph2 km/h from WNW, gusts 5 mph7 km/h	100%	41%	0
Mon 8a	Fog	44°7° (likely 44°7° to 50°10°)	44°7°	0%	2 mph3 km/h from WNW, gusts 6 mph9 km/h	100%	34%	0
Mon 9a	Sunny	48°9° (likely 48°9° to 53°12°)	48°9°	0%	2 mph3 km/h from WNW, gusts 5 mph9 km/h	98%	24%	1
Mon 10a	Sunny	54°12° (likely 54°12° to 58°14°)	54°12°	0%	2 mph3 km/h from WNW, gusts 11 mph18 km/h	96%	25%	2
Mon 11a	Sunny	59°15° (likely 59°15° to 62°17°)	59°15°	0%	5 mph8 km/h from W, gusts 11 mph18 km/h	91%	12%	3
Mon 12p	Partly sunny	62°17° (likely 62°17° to 65°18°)	62°17°	0%	5 mph8 km/h from W, gusts 12 mph19 km/h	84%	14%	4

Days ahead

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

Today, Oct 24. Sunny. High 75°24°, low 41°5°. Typical 75°24° / 46°8°. Dry. Mostly agree. Best day outdoors this week.
1. Afternoon
  noon–6 PM
  Sunny, 74°23°
  Dry
2. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
3. Overnight
  midnight–6 AM
  Fog, 44°7°
  Dry
Official NWS forecast
Today: Sunny. High near 75, with temperatures falling to around 69 in the afternoon. West wind 1 to 7 mph.
Tonight: Patchy fog between 1am and 5am. Mostly clear. Low around 41, with temperatures rising to around 44 overnight. Northwest wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Best day outdoors this week: the one dry, mild day the forecasts agree on (high 75°24°).
High, likely
71°22°–76°24°
Low, likely
41°5°–47°8°
Typical high / low
75°24° / 46°8°
Wind
14 mph23 km/h, gusts 21 mph33 km/h
UV peak
5
Tomorrow, Oct 25. Fog. High 72°22°, low 41°5°. Typical 74°23° / 46°8°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Fog, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Fog, 42°6°
  Dry
Official NWS forecast
Day: Areas of fog between 7am and 10am. Partly sunny. High near 72, with temperatures falling to around 66 in the afternoon. Southwest wind 0 to 5 mph.
Night: Areas of fog after 9pm. Mostly cloudy, with a low around 41. West northwest wind around 1 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
69°21°–72°22°
Low, likely
41°5°–46°8°
Typical high / low
74°23° / 46°8°
Wind
11 mph17 km/h, gusts 18 mph29 km/h
UV peak
4
Monday, Oct 26. Fog. High 67°19°, low 40°4°. Typical 74°23° / 46°8°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 44°7°
  Dry
Official NWS forecast
Day: Patchy fog before 11am. Mostly sunny, with a high near 67. West wind 1 to 10 mph, with gusts as high as 21 mph.
Night: Areas of fog after 2am. Mostly clear, with a low around 40.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
65°18°–67°19°
Low, likely
40°4°–50°10°
Typical high / low
74°23° / 46°8°
Wind
14 mph22 km/h, gusts 27 mph44 km/h
UV peak
5
Tuesday, Oct 27. Fog. High 68°20°, low 40°4°. Typical 74°23° / 45°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 44°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Areas of fog before 10am. Mostly sunny, with a high near 68.
Night: Areas of fog after 9pm. Partly cloudy, with a low around 40.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–68°20°
Low, likely
40°4°–46°8°
Typical high / low
74°23° / 45°7°
Wind
11 mph18 km/h, gusts 22 mph35 km/h
UV peak
5
Wednesday, Oct 28. Fog. High 65°18°, low 41°5°. Typical 73°23° / 45°7°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 67°19°
  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: Areas of fog before 10am. Partly sunny, with a high near 65.
Night: Areas of fog after 9pm. Mostly cloudy, with a low around 41.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
63°17°–69°21°
Low, likely
41°5°–46°8°
Typical high / low
73°23° / 45°7°
Wind
11 mph17 km/h, gusts 19 mph30 km/h
UV peak
4
Thursday, Oct 29. Fog. High 64°18°, low 39°4°. Typical 73°23° / 45°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 65°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 43°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Areas of fog before 10am. Mostly sunny, with a high near 64.
Night: Patchy fog after 2am. Partly cloudy, with a low around 39.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–68°20°
Low, likely
39°4°–50°10°
Typical high / low
73°23° / 45°7°
Wind
15 mph25 km/h, gusts 31 mph49 km/h
UV peak
4
Friday, Oct 30. Rain. High 62°17°, low 38°3°. Typical 72°22° / 45°7°. Rain 0.01 in0.3 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 51°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 42°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Patchy fog before 10am, then a slight chance of rain. Mostly sunny, with a high near 62.
Night: A slight chance of rain before 9pm, then areas of fog and a slight chance of rain. Partly cloudy, with a low around 38.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
60°16°–64°18°
Low, likely
37°3°–45°7°
Typical high / low
72°22° / 45°7°
Wind
16 mph25 km/h, gusts 28 mph44 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 62°17°, low 42°6°. Typical 72°22° / 45°7°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 42°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 49°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 40°5°
  Dry
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°–68°20°
Low, likely
33°1°–46°8°
Typical high / low
72°22° / 45°7°
Wind
12 mph20 km/h, gusts 24 mph39 km/h
UV peak
4
Sunday, Nov 1. Sunny. High 66°19°, low 40°4°. Typical 72°22° / 44°7°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 42°5°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Drizzle, 44°6°
  Dry
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
59°15°–75°24°
Low, likely
32°0°–43°6°
Typical high / low
72°22° / 44°7°
Wind
16 mph25 km/h, gusts 31 mph49 km/h
UV peak
4
Monday, Nov 2. Drizzle. High 59°15°, low 44°7°. Typical 71°22° / 44°7°. Rain 0.12 in3 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 49°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 58°15°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 52°11°
  Dry
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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
56°13°–61°16°
Low, likely
38°3°–51°11°
Typical high / low
71°22° / 44°7°
Wind
9 mph14 km/h, gusts 25 mph41 km/h
UV peak
1

10 days15 days30 days

The outlook

Today
Dry, high 75°, low 41°.
Tomorrow
Dry, high 72°, low 41°, cooling off.
Monday
Dry, high 67°, low 40°, cooling off.
Rest of week
Mostly dry, highs 59–68°.

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

Willow Brook at Penngrove Park

0.6 mi

Below flood stage

Level: 55.5 ft

Reading from Sat 12 PM · NWS gauge page

Willow Brook at Old Redwood Highway Bridge

1.4 mi

Below flood stage

Level: 33.8 ft

Reading from Sat 11:37 AM · NWS gauge page

Willow Brook at Stony Point Road

1.8 mi

Below flood stage

Level: 31.0 ft

Reading from Sat 11:37 AM · NWS gauge page

Wiggins Creek at Rainsville Road

2.2 mi

Below flood stage

Level: 35.4 ft

Reading from Sat 12 PM · NWS gauge page

For your home

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

Heating this week

About 40% less heating than a typical week.

This week 23Typical 39

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 14
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at. About 3 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 41°F).

Open the windows?

Today, 2:00 PM–6:00 PM

Good stretch to open the windows.

Is this typical?

SONOMA · official normals 1991–2020 · records 1893–2026

Oct 24, today vs a typical year

Today’s expected high is about typical for the date.

Last 7 days vs normal

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

Penngrove weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 52 min; Losing 2 min 16 s a day; shortest Dec 21, 1 h 22 min less
Golden hour: 5:43–6:36 PM; Morning 7:12–8:05 AM
Blue hour: 6:36–6:47 PM; Morning 7:01–7:12 AM; first light 7:01 AM

Stars tonight? Fair

Mostly clear 6:47 PM–1 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

Today: sets 5:50 AM · rises 5:20 PM
Full moon: Oct 25
New moon: Nov 8

Looking northeast from Penngrove. The highest point on the skyline is about 4,700 ft, 35 mi away.Skyline from USGS elevation data, heights drawn up to 4.5× taller. Sky, sun and moon as they are now.

1 active weather alert

Coastal Flood Advisory

Penngrove, CA weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Willow Brook at Penngrove Park

Willow Brook at Old Redwood Highway Bridge

Willow Brook at Stony Point Road

Wiggins Creek at Rainsville Road

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? Fair

Moon