San Lorenzo River (CA) at Big Trees
8.1 mi- Level
- 3.2 ft
- Flow
- 18 cfs
Forecast peak 3.1 ft Sat 5 AM
Reading from Sat 3:30 AM · NWS gauge page
Appearance
Starts in 3 h
Issued for this forecast zone · National Weather Service San Francisco CA
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 1.1 ft above normal (6.9 ft MLLW) at 10:39 AM Saturday 10/24, 1.4 ft above normal (7.2 ft MLLW) at 11:07 AM Sunday 10/25, 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: 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 4:40 AM PDT at KWVI
Clear and 48°9°.
Today: low 50°10° (likely 49°9° to 51°11°), high 69°21° (likely 68°20° to 73°23°).
Now 48°9°
Clear
No precipitation expected in the next 2 hours.
From forecast models
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 5a | Clear | 50°10° (likely 50°10° to 53°12°) | 49°9° | 0% | 3 mph5 km/h from NNE, gusts 6 mph10 km/h | 84% | 0% | 0 |
| Sat 6a | Clear | 51°11° (likely 50°10° to 52°11°) | 50°10° | 0% | 5 mph8 km/h from NNE, gusts 6 mph9 km/h | 82% | 0% | 0 |
| Sat 7a | Sunny | 50°10° (likely 49°9° to 52°11°) | 49°9° | 0% | 5 mph8 km/h from NNE, gusts 4 mph7 km/h | 81% | 0% | 0 |
| Sat 8a | Sunny | 51°11° (likely 50°10° to 52°11°) | 49°9° | 0% | 5 mph8 km/h from N, gusts 4 mph7 km/h | 78% | 0% | 0 |
| Sat 9a | Sunny | 56°13° (likely 55°13° to 58°14°) | 56°13° | 0% | 5 mph8 km/h from N, gusts 5 mph8 km/h | 67% | 0% | 1 |
| Sat 10a | Sunny | 59°15° (likely 59°15° to 63°17°) | 59°15° | 0% | 2 mph3 km/h from NE, gusts 4 mph6 km/h | 60% | 0% | 2 |
| Sat 11a | Sunny | 61°16° (likely 61°16° to 67°19°) | 61°16° | 0% | 2 mph3 km/h from SSE, gusts 4 mph6 km/h | 57% | 0% | 3 |
| Sat 12p | Sunny | 64°18° (likely 64°18° to 70°21°) | 64°18° | 0% | 2 mph3 km/h from SSW, gusts 4 mph7 km/h | 58% | 0% | 4 |
| Sat 1p | Sunny | 66°19° (likely 66°19° to 71°22°) | 66°19° | 0% | 3 mph5 km/h from WSW, gusts 6 mph9 km/h | 56% | 0% | 5 |
| Sat 2p | Sunny | 67°19° (likely 67°19° to 72°22°) | 67°19° | 0% | 5 mph8 km/h from WSW, gusts 6 mph10 km/h | 54% | 0% | 5 |
| Sat 3p | Sunny | 68°20° (likely 68°20° to 73°23°) | 69°21° | 0% | 5 mph8 km/h from W, gusts 7 mph11 km/h | 54% | 0% | 4 |
| Sat 4p | Sunny | 68°20° (likely 67°19° to 73°23°) | 68°20° | 0% | 5 mph8 km/h from W, gusts 7 mph12 km/h | 54% | 0% | 3 |
| Sat 5p | Sunny | 67°19° (likely 66°19° to 72°22°) | 67°19° | 0% | 2 mph3 km/h from W, gusts 7 mph11 km/h | 56% | 0% | 2 |
| Sat 6p | Clear | 65°18° (likely 63°17° to 68°20°) | 65°18° | 0% | 1 mph2 km/h from W, gusts 4 mph6 km/h | 61% | 0% | 1 |
| Sat 7p | Clear | 62°17° (likely 60°16° to 63°17°) | 62°17° | 0% | 1 mph2 km/h from NNW, gusts 5 mph8 km/h | 66% | 0% | 0 |
| Sat 8p | Clear | 60°16° (likely 58°14° to 60°16°) | 60°16° | 0% | 2 mph3 km/h from ENE, gusts 8 mph13 km/h | 73% | 0% | 0 |
| Sat 9p | Clear | 59°15° (likely 56°13° to 59°15°) | 59°15° | 0% | 3 mph5 km/h from ENE, gusts 8 mph13 km/h | 74% | 0% | 0 |
| Sat 10p | Clear | 58°14° (likely 55°13° to 58°14°) | 58°14° | 0% | 5 mph8 km/h from ENE, gusts 9 mph14 km/h | 75% | 2% | 0 |
| Sat 11p | Clear | 57°14° (likely 55°13° to 57°14°) | 57°14° | 0% | 6 mph10 km/h from NE, gusts 8 mph13 km/h | 76% | 1% | 0 |
| Sun 12a | Clear | 57°14° (likely 54°12° to 57°14°) | 57°14° | 0% | 6 mph10 km/h from NE, gusts 7 mph11 km/h | 73% | 1% | 0 |
| Sun 1a | Clear | 56°13° (likely 54°12° to 56°13°) | 56°13° | 0% | 5 mph8 km/h from NNE, gusts 5 mph9 km/h | 73% | 0% | 0 |
| Sun 2a | Clear | 56°13° (likely 54°12° to 56°13°) | 56°13° | 0% | 5 mph8 km/h from N, gusts 5 mph8 km/h | 74% | 1% | 0 |
| Sun 3a | Clear | 54°12° (likely 53°12° to 56°13°) | 55°13° | 0% | 3 mph5 km/h from N, gusts 5 mph9 km/h | 75% | 0% | 0 |
| Sun 4a | Clear | 54°12° (likely 51°11° to 56°13°) | 54°12° | 0% | 2 mph3 km/h from NNE, gusts 5 mph8 km/h | 73% | 38% | 0 |
| Sun 5a | Partly cloudy | 54°12° (likely 52°11° to 56°13°) | 54°12° | 0% | 2 mph3 km/h from NE, gusts 4 mph7 km/h | 74% | 47% | 0 |
| Sun 6a | Partly cloudy | 52°11° (likely 52°11° to 57°14°) | 52°11° | 0% | 2 mph3 km/h from NE, gusts 3 mph5 km/h | 73% | 32% | 0 |
| Sun 7a | Partly sunny | 53°12° (likely 52°11° to 57°14°) | 53°12° | 0% | 2 mph3 km/h from NE, gusts 3 mph5 km/h | 74% | 59% | 0 |
| Sun 8a | Partly sunny | 54°12° (likely 52°11° to 58°14°) | 54°12° | 0% | 2 mph3 km/h from ENE, gusts 4 mph6 km/h | 74% | 73% | 0 |
| Sun 9a | Partly sunny | 57°14° (likely 57°14° to 61°16°) | 57°14° | 0% | 2 mph3 km/h from ENE, gusts 3 mph5 km/h | 67% | 69% | 1 |
| Sun 10a | Cloudy | 61°16° (likely 61°16° to 65°18°) | 61°16° | 0% | 2 mph3 km/h from ENE, gusts 3 mph5 km/h | 64% | 59% | 2 |
| Sun 11a | Partly sunny | 63°17° (likely 63°17° to 68°20°) | 63°17° | 0% | 2 mph3 km/h from SSW, gusts 5 mph7 km/h | 62% | 57% | 3 |
| Sun 12p | Partly sunny | 66°19° (likely 65°18° to 70°21°) | 66°19° | 0% | 2 mph3 km/h from SSW, gusts 6 mph9 km/h | 62% | 57% | 4 |
| Sun 1p | Partly sunny | 67°19° (likely 65°18° to 71°22°) | 67°19° | 0% | 2 mph3 km/h from SSW, gusts 8 mph13 km/h | 59% | 73% | 4 |
| Sun 2p | Mostly sunny | 68°20° (likely 65°18° to 71°22°) | 68°20° | 0% | 5 mph8 km/h from WSW, gusts 9 mph15 km/h | 57% | 78% | 4 |
| Sun 3p | Mostly sunny | 69°21° (likely 64°18° to 70°21°) | 69°21° | 0% | 5 mph8 km/h from WSW, gusts 11 mph18 km/h | 57% | 80% | 4 |
| Sun 4p | Cloudy | 68°20° (likely 63°17° to 69°21°) | 68°20° | 0% | 5 mph8 km/h from WSW, gusts 12 mph19 km/h | 61% | 80% | 3 |
| Sun 5p | Cloudy | 66°19° (likely 61°16° to 67°19°) | 66°19° | 0% | 2 mph3 km/h from WSW, gusts 10 mph16 km/h | 64% | 80% | 2 |
| Sun 6p | Cloudy | 64°18° (likely 59°15° to 65°18°) | 64°18° | 0% | 2 mph3 km/h from WSW, gusts 7 mph12 km/h | 71% | 81% | 1 |
| Sun 7p | Cloudy | 62°17° (likely 57°14° to 62°17°) | 62°17° | 0% | 2 mph3 km/h from WSW, gusts 7 mph11 km/h | 77% | 77% | 0 |
| Sun 8p | Cloudy | 60°16° (likely 55°13° to 60°16°) | 60°16° | 0% | 0 mph0 km/h, gusts 6 mph10 km/h | 81% | 69% | 0 |
| Sun 9p | Clear | 59°15° (likely 55°13° to 59°15°) | 59°15° | 0% | 0 mph0 km/h, gusts 6 mph9 km/h | 84% | 30% | 0 |
| Sun 10p | Clear | 58°14° (likely 54°12° to 58°14°) | 58°14° | 0% | 0 mph0 km/h, gusts 4 mph7 km/h | 86% | 27% | 0 |
| Sun 11p | Clear | 58°14° (likely 53°12° to 58°14°) | 58°14° | 0% | 1 mph2 km/h from W, gusts 3 mph5 km/h | 88% | 16% | 0 |
| Mon 12a | Clear | 57°14° (likely 54°12° to 60°16°) | 57°14° | 0% | 1 mph2 km/h from W, gusts 3 mph5 km/h | 89% | 4% | 0 |
| Mon 1a | Clear | 56°13° (likely 53°12° to 59°15°) | 56°13° | 0% | 1 mph2 km/h from W, gusts 3 mph4 km/h | 89% | 6% | 0 |
| Mon 2a | Partly cloudy | 55°13° (likely 52°11° to 59°15°) | 55°13° | 0% | 2 mph3 km/h from NNW, gusts 2 mph4 km/h | 90% | 24% | 0 |
| Mon 3a | Partly cloudy | 54°12° (likely 52°11° to 58°14°) | 54°12° | 0% | 2 mph3 km/h from NNW, gusts 3 mph6 km/h | 92% | 28% | 0 |
| Mon 4a | Partly cloudy | 53°12° (likely 53°12° to 58°14°) | 53°12° | 0% | 2 mph3 km/h from NNW, gusts 4 mph6 km/h | 94% | 30% | 0 |
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Official NWS forecast
Today: Sunny. High near 69, with temperatures falling to around 67 in the afternoon. West wind around 5 mph.
Tonight: Mostly clear, with a low around 50. North northeast wind around 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Official NWS forecast
Day: Mostly sunny, with a high near 69. West southwest wind around 5 mph.
Night: Partly cloudy, with a low around 50. Northwest wind around 2 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 67.
Night: Partly cloudy, with a low around 48.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 66.
Night: Mostly cloudy, with a low around 51.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 64.
Night: Mostly cloudy, with a low around 52.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
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 62.
Night: A chance of rain. Mostly cloudy, with a low around 51.
Forecasts agreeIndependent forecasts are close; the range is narrow.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
20% chance
Evening
6 PM–midnight
20% chance
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain. Partly sunny, with a high near 60.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
30% chance
Afternoon
noon–6 PM
30% chance
Evening
6 PM–midnight
30% chance
Overnight
midnight–6 AM
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.
Morning
6 AM–noon
20% chance
Afternoon
noon–6 PM
20% chance
Evening
6 PM–midnight
20% chance
Overnight
midnight–6 AM
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.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
20% chance · 0.06 in1.5 mm
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.
Dry, high 69°, low 50°.
Dry, high 69°, low 50°.
Dry, high 67°, low 48°.
Mostly dry, highs 60–66°.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (MTR) (opens in a new tab)
No meaningful changes from yesterday’s forecast.
Forecast peak 3.1 ft Sat 5 AM
Reading from Sat 3:30 AM · NWS gauge page
Reading from Sat 3:15 AM · NWS gauge page
Reading from Sat 3 AM · NWS gauge page
Reading from Sat 3:15 AM · NWS gauge page
What this week’s weather means for heating, cooling, pipes and fresh air.
About 71% less heating than a typical week.
Heating degree days, base 65°F
Dry air outside (dew point 43°F).
Today, 11:00 AM–8:00 PM
Good stretch to open the windows.
Today’s expected high is 4°2° colder than typical.
On average 1°0° warmer than normal (daily mean temperature).
Pleasure Point weather by month: normals, records, snow and freeze dates
Sunrise 7:24 AM, sunset 6:19 PM.
Clear 5–6:57 AM, but the moon is 96% lit and up.
Waxing gibbous
96% lit · growing