Laguna de Santa Rosa near Sebastopol
1.8 mi- Level
- 55.6 ft
- Flow
- 2 cfs
Forecast peak 55.5 ft Fri 9 PM
Reading from Fri 7:30 PM · NWS gauge page
Appearance
Starts in 10 h 54 min
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 8:45 PM PDT at KSTS
Clear and 55°13°.
Today: low 42°6° (likely 42°6° to 49°9°), high 71°22° (likely 69°21° to 74°23°).
Now 55°13°
Clear
No precipitation expected in the next 2 hours.
From forecast models
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Fri 9p | Clear | 52°11° (likely 52°11° to 56°13°) | 52°11° | 0% | 1 mph2 km/h from NW, gusts 4 mph7 km/h | 84% | 0% | 0 |
| Fri 10p | Clear | 51°11° (likely 50°10° to 54°12°) | 51°11° | 0% | 2 mph3 km/h from WNW, gusts 3 mph5 km/h | 83% | 0% | 0 |
| Fri 11p | Clear | 49°9° (likely 48°9° to 52°11°) | 48°9° | 0% | 3 mph5 km/h from NW, gusts 2 mph4 km/h | 85% | 9% | 0 |
| Sat 12a | Clear | 48°9° (likely 46°8° to 52°11°) | 47°8° | 0% | 3 mph5 km/h from NW, gusts 3 mph5 km/h | 83% | 13% | 0 |
| Sat 1a | Clear | 48°9° (likely 45°7° to 52°11°) | 48°9° | 0% | 2 mph3 km/h from NNW, gusts 3 mph5 km/h | 79% | 12% | 0 |
| Sat 2a | Clear | 46°8° (likely 43°6° to 51°11°) | 46°8° | 0% | 2 mph3 km/h from NNW, gusts 3 mph5 km/h | 76% | 13% | 0 |
| Sat 3a | Clear | 45°7° (likely 42°6° to 50°10°) | 45°7° | 0% | 2 mph3 km/h from NNW, gusts 3 mph5 km/h | 74% | 12% | 0 |
| Sat 4a | Clear | 44°7° (likely 42°6° to 50°10°) | 44°7° | 0% | 1 mph2 km/h from NNW, gusts 3 mph4 km/h | 74% | 11% | 0 |
| Sat 5a | Clear | 42°6° (likely 41°5° to 49°9°) | 42°6° | 0% | 1 mph2 km/h from NW, gusts 3 mph5 km/h | 72% | 11% | 0 |
| Sat 6a | Clear | 42°6° (likely 40°4° to 49°9°) | 42°6° | 0% | 1 mph2 km/h from NW, gusts 3 mph5 km/h | 75% | 10% | 0 |
| Sat 7a | Sunny | 42°6° (likely 39°4° to 48°9°) | 42°6° | 0% | 1 mph2 km/h from NW, gusts 3 mph5 km/h | 75% | 10% | 0 |
| Sat 8a | Sunny | 42°6° (likely 39°4° to 49°9°) | 42°6° | 0% | 1 mph2 km/h from NNW, gusts 4 mph6 km/h | 74% | 10% | 0 |
| Sat 9a | Sunny | 48°9° (likely 44°7° to 53°12°) | 49°9° | 0% | 1 mph2 km/h from N, gusts 4 mph6 km/h | 70% | 1% | 1 |
| Sat 10a | Sunny | 56°13° (likely 54°12° to 61°16°) | 56°13° | 0% | 0 mph0 km/h, gusts 4 mph7 km/h | 60% | 0% | 2 |
| Sat 11a | Sunny | 63°17° (likely 62°17° to 69°21°) | 63°17° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 49% | 0% | 3 |
| Sat 12p | Sunny | 69°21° (likely 68°20° to 74°23°) | 69°21° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 40% | 0% | 4 |
| Sat 1p | Sunny | 72°22° (likely 71°22° to 77°25°) | 72°22° | 0% | 1 mph2 km/h from W, gusts 5 mph8 km/h | 34% | 0% | 5 |
| Sat 2p | Sunny | 74°23° (likely 71°22° to 80°27°) | 74°23° | 0% | 2 mph3 km/h from WSW, gusts 6 mph10 km/h | 32% | 0% | 5 |
| Sat 3p | Sunny | 74°23° (likely 70°21° to 79°26°) | 74°23° | 0% | 6 mph10 km/h from WSW, gusts 11 mph18 km/h | 32% | 5% | 4 |
| Sat 4p | Sunny | 72°22° (likely 68°20° to 77°25°) | 72°22° | 0% | 7 mph11 km/h from WSW, gusts 13 mph20 km/h | 36% | 32% | 3 |
| Sat 5p | Sunny | 69°21° (likely 66°19° to 73°23°) | 69°21° | 0% | 6 mph10 km/h from WSW, gusts 13 mph21 km/h | 42% | 37% | 2 |
| Sat 6p | Clear | 65°18° (likely 61°16° to 67°19°) | 65°18° | 0% | 2 mph3 km/h from SW, gusts 12 mph19 km/h | 53% | 40% | 1 |
| Sat 7p | Clear | 56°13° (likely 56°13° to 61°16°) | 56°13° | 0% | 0 mph0 km/h, gusts 8 mph14 km/h | 68% | 39% | 0 |
| Sat 8p | Clear | 53°12° (likely 53°12° to 57°14°) | 53°12° | 0% | 0 mph0 km/h, gusts 6 mph10 km/h | 80% | 47% | 0 |
| Sat 9p | Clear | 50°10° (likely 50°10° to 55°13°) | 51°11° | 0% | 0 mph0 km/h, gusts 6 mph9 km/h | 87% | 27% | 0 |
| Sat 10p | Clear | 49°9° (likely 49°9° to 53°12°) | 49°9° | 0% | 0 mph0 km/h, gusts 4 mph7 km/h | 88% | 25% | 0 |
| Sat 11p | Clear | 48°9° (likely 47°8° to 52°11°) | 48°9° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 92% | 26% | 0 |
| Sun 12a | Fog | 47°8° (likely 46°8° to 52°11°) | 47°8° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 93% | 33% | 0 |
| Sun 1a | Mostly clear | 46°8° (likely 46°8° to 52°11°) | 47°8° | 0% | 0 mph0 km/h, gusts 3 mph4 km/h | 91% | 73% | 0 |
| Sun 2a | Partly cloudy | 45°7° (likely 45°7° to 51°11°) | 45°7° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 92% | 71% | 0 |
| Sun 3a | Partly cloudy | 44°7° (likely 44°7° to 50°10°) | 44°7° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 90% | 54% | 0 |
| Sun 4a | Partly cloudy | 43°6° (likely 43°6° to 50°10°) | 43°6° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 91% | 67% | 0 |
| Sun 5a | Mostly clear | 41°5° (likely 41°5° to 49°9°) | 41°5° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 91% | 69% | 0 |
| Sun 6a | Fog | 41°5° (likely 41°5° to 49°9°) | 41°5° | 0% | 0 mph0 km/h, gusts 2 mph4 km/h | 93% | 72% | 0 |
| Sun 7a | Fog | 40°4° (likely 40°4° to 48°9°) | 41°5° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 94% | 70% | 0 |
| Sun 8a | Partly sunny | 41°5° (likely 41°5° to 49°9°) | 41°5° | 0% | 1 mph2 km/h from NE, gusts 2 mph4 km/h | 91% | 77% | 0 |
| Sun 9a | Partly sunny | 47°8° (likely 45°7° to 52°11°) | 47°8° | 0% | 1 mph2 km/h from NE, gusts 3 mph4 km/h | 83% | 73% | 1 |
| Sun 10a | Partly sunny | 55°13° (likely 49°9° to 58°14°) | 55°13° | 0% | 1 mph2 km/h from NE, gusts 4 mph6 km/h | 71% | 68% | 2 |
| Sun 11a | Cloudy | 62°17° (likely 56°13° to 63°17°) | 63°17° | 0% | 0 mph0 km/h, gusts 5 mph8 km/h | 60% | 68% | 3 |
| Sun 12p | Cloudy | 67°19° (likely 62°17° to 67°19°) | 67°19° | 0% | 0 mph0 km/h, gusts 5 mph8 km/h | 51% | 71% | 4 |
| Sun 1p | Partly sunny | 71°22° (likely 65°18° to 71°22°) | 71°22° | 0% | 0 mph0 km/h, gusts 7 mph11 km/h | 44% | 76% | 4 |
| Sun 2p | Partly sunny | 72°22° (likely 65°18° to 72°22°) | 72°22° | 0% | 2 mph3 km/h from SSW, gusts 10 mph16 km/h | 40% | 81% | 4 |
| Sun 3p | Cloudy | 73°23° (likely 63°17° to 73°23°) | 73°23° | 0% | 2 mph3 km/h from SSW, gusts 10 mph16 km/h | 39% | 85% | 4 |
| Sun 4p | Cloudy | 71°22° (likely 62°17° to 71°22°) | 71°22° | 0% | 2 mph3 km/h from SSW, gusts 10 mph16 km/h | 42% | 89% | 3 |
| Sun 5p | Cloudy | 68°20° (likely 60°16° to 68°20°) | 68°20° | 0% | 5 mph8 km/h from SW, gusts 9 mph15 km/h | 48% | 84% | 1 |
| Sun 6p | Cloudy | 64°18° (likely 57°14° to 64°18°) | 64°18° | 0% | 5 mph8 km/h from SW, gusts 7 mph12 km/h | 58% | 83% | 1 |
| Sun 7p | Partly cloudy | 58°14° (likely 53°12° to 60°16°) | 58°14° | 0% | 5 mph8 km/h from SW, gusts 5 mph7 km/h | 70% | 86% | 0 |
| Sun 8p | Partly cloudy | 53°12° (likely 52°11° to 57°14°) | 53°12° | 0% | 0 mph0 km/h, gusts 4 mph7 km/h | 81% | 86% | 0 |
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Official NWS forecast
Tonight: Clear, with a low around 42. Northwest 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: Sunny. High near 75, with temperatures falling to around 69 in the afternoon. Northwest wind 0 to 7 mph.
Night: Patchy fog between midnight and 1am. Mostly clear, with a low around 41. West 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
Official NWS forecast
Day: Patchy fog before 8am. Mostly sunny, with a high near 73. North northwest wind 0 to 5 mph.
Night: Areas of fog after midnight. Partly cloudy, with a low around 41. West northwest wind 0 to 5 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: Areas of fog before 10am. Mostly sunny, with a high near 68.
Night: Patchy fog after 2am. Partly cloudy, with a low around 40.
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: Patchy fog before 10am. Mostly sunny, with a high near 68.
Night: Areas of fog after 9pm. Partly cloudy, with a low around 40.
Forecasts agreeIndependent forecasts are close; the range is narrow.
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: Areas of fog before 9am. Mostly sunny, with a high near 69.
Night: Areas of fog after 10pm. Mostly cloudy, with a low around 42.
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
20% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: Areas of fog before 10am. Mostly sunny, with a high near 67.
Night: Areas of fog between 9pm and 11pm, then areas of fog and a slight chance of rain showers. Partly cloudy, with a low around 42.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
30% chance · 0.01 in0.3 mm
Afternoon
noon–6 PM
30% chance
Evening
6 PM–midnight
30% chance
Overnight
midnight–6 AM
30% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: Areas of fog and a chance of rain showers. Partly sunny, with a high near 65.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
30% chance
Afternoon
noon–6 PM
30% chance
Evening
6 PM–midnight
30% chance
Overnight
midnight–6 AM
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.
Morning
6 AM–noon
20% chance
Afternoon
noon–6 PM
20% chance
Evening
6 PM–midnight
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.
Dry, high 71°, low 42°.
Dry, high 75°, low 41°, warming up.
Dry, high 73°, low 41°.
Mostly dry, highs 65–71°.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (MTR) (opens in a new tab)
No meaningful changes from yesterday’s forecast.
Forecast peak 55.5 ft Fri 9 PM
Reading from Fri 7:30 PM · NWS gauge page
Forecast peak 73.0 ft Fri 9 PM
Reading from Fri 7:30 PM · NWS gauge page
Forecast peak 23.1 ft Fri 9 PM
Reading from Fri 7 PM · NWS gauge page
Forecast peak 38.7 ft Fri 9 PM
Reading from Fri 7:45 PM · NWS gauge page
What this week’s weather means for heating, cooling, pipes and fresh air.
About 37% less heating than a typical week.
Heating degree days, base 65°F
47, 17 and 5°F are the test points heat pumps are rated at. About 4 hours are near freezing and damp, when outdoor units defrost more often.
Dry air outside (dew point 48°F).
Sat, 11:00 AM–6:00 PM
Good stretch to open the windows.
Today’s expected high is 3°2° colder than typical.
On average 0° colder than normal (daily mean temperature).
Sebastopol weather by month: normals, records, snow and freeze dates
Sunrise 7:28 AM, sunset 6:22 PM.
Clear 9:06 PM–7:02 AM, but the moon is 96% lit and up.
Waxing gibbous
95% lit · growing