Laguna de Santa Rosa at Stony Point Road NR Cotati
7.4 mi- Level
- 73.4 ft
- Flow
- 1 cfs
Forecast peak 73.0 ft Sat 8 AM
Reading from Sat 7:30 AM · NWS gauge page
Appearance
Ends in 5 days 5 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, 1.5 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 8:35 AM PDT at KSTS
Sunny and 48°9°, jacket by 7 PM.
Today: low 42°6° (likely 42°6° to 47°8°), high 73°23° (likely 71°22° to 74°23°).
Now 48°9°
Sunny · Feels like 45°7°
No precipitation expected in the next 2 hours.
From forecast models
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 9a | Sunny | 49°9° (likely 46°8° to 54°12°) | 49°9° | 0% | 1 mph2 km/h from E, gusts 4 mph6 km/h | 68% | 4% | 1 |
| Sat 10a | Sunny | 56°13° (likely 54°12° to 62°17°) | 56°13° | 0% | 1 mph2 km/h from NNE, gusts 3 mph5 km/h | 61% | 1% | 2 |
| Sat 11a | Sunny | 62°17° (likely 62°17° to 68°20°) | 63°17° | 0% | 1 mph2 km/h from NNW, gusts 2 mph4 km/h | 48% | 0% | 3 |
| Sat 12p | Sunny | 68°20° (likely 67°19° to 72°22°) | 68°20° | 0% | 1 mph2 km/h from NW, gusts 3 mph5 km/h | 40% | 0% | 4 |
| Sat 1p | Sunny | 70°21° (likely 70°21° to 74°23°) | 70°21° | 0% | 2 mph3 km/h from W, gusts 6 mph9 km/h | 37% | 0% | 5 |
| Sat 2p | Sunny | 71°22° (likely 71°22° to 73°23°) | 71°22° | 0% | 5 mph8 km/h from W, gusts 9 mph15 km/h | 37% | 0% | 5 |
| Sat 3p | Sunny | 72°22° (likely 69°21° to 72°22°) | 72°22° | 0% | 7 mph11 km/h from W, gusts 11 mph18 km/h | 44% | 0% | 4 |
| Sat 4p | Sunny | 68°20° (likely 67°19° to 70°21°) | 68°20° | 0% | 9 mph14 km/h from W, gusts 12 mph20 km/h | 50% | 0% | 3 |
| Sat 5p | Sunny | 65°18° (likely 64°18° to 67°19°) | 65°18° | 0% | 9 mph14 km/h from W, gusts 13 mph20 km/h | 60% | 0% | 2 |
| Sat 6p | Clear | 61°16° (likely 60°16° to 63°17°) | 61°16° | 0% | 7 mph11 km/h from WSW, gusts 11 mph17 km/h | 74% | 1% | 1 |
| Sat 7p | Clear | 54°12° (likely 54°12° to 59°15°) | 54°12° | 0% | 3 mph5 km/h from WSW, gusts 9 mph14 km/h | 89% | 7% | 0 |
| Sat 8p | Clear | 52°11° (likely 52°11° to 56°13°) | 52°11° | 0% | 1 mph2 km/h from WSW, gusts 5 mph9 km/h | 96% | 22% | 0 |
| Sat 9p | Clear | 51°11° (likely 51°11° to 54°12°) | 51°11° | 0% | 1 mph2 km/h from WSW, gusts 4 mph7 km/h | 96% | 12% | 0 |
| Sat 10p | Clear | 50°10° (likely 50°10° to 53°12°) | 50°10° | 0% | 1 mph2 km/h from WSW, gusts 4 mph6 km/h | 96% | 17% | 0 |
| Sat 11p | Clear | 49°9° (likely 48°9° to 52°11°) | 49°9° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 96% | 20% | 0 |
| Sun 12a | Fog | 49°9° (likely 47°8° to 52°11°) | 49°9° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 95% | 65% | 0 |
| Sun 1a | Fog | 48°9° (likely 47°8° to 51°11°) | 48°9° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 96% | 83% | 0 |
| Sun 2a | Fog | 47°8° (likely 46°8° to 50°10°) | 47°8° | 0% | 0 mph0 km/h, gusts 3 mph4 km/h | 96% | 90% | 0 |
| Sun 3a | Fog | 45°7° (likely 45°7° to 50°10°) | 45°7° | 0% | 0 mph0 km/h, gusts 2 mph4 km/h | 94% | 85% | 0 |
| Sun 4a | Fog | 45°7° (likely 45°7° to 49°9°) | 45°7° | 0% | 1 mph2 km/h from SE, gusts 2 mph3 km/h | 93% | 86% | 0 |
| Sun 5a | Partly cloudy | 44°7° (likely 44°7° to 48°9°) | 44°7° | 0% | 1 mph2 km/h from ENE, gusts 2 mph3 km/h | 93% | 93% | 0 |
| Sun 6a | Fog | 43°6° (likely 43°6° to 47°8°) | 43°6° | 0% | 1 mph2 km/h from ENE, gusts 2 mph4 km/h | 93% | 88% | 0 |
| Sun 7a | Fog | 43°6° (likely 43°6° to 46°8°) | 43°6° | 0% | 1 mph2 km/h from ENE, gusts 1 mph2 km/h | 93% | 90% | 0 |
| Sun 8a | Fog | 43°6° (likely 43°6° to 47°8°) | 43°6° | 0% | 2 mph3 km/h from ENE, gusts 2 mph3 km/h | 93% | 83% | 0 |
| Sun 9a | Fog | 46°8° (likely 46°8° to 51°11°) | 46°8° | 0% | 2 mph3 km/h from ENE, gusts 2 mph3 km/h | 96% | 70% | 1 |
| Sun 10a | Cloudy | 53°12° (likely 53°12° to 57°14°) | 53°12° | 0% | 2 mph3 km/h from ENE, gusts 4 mph7 km/h | 85% | 72% | 2 |
| Sun 11a | Cloudy | 60°16° (likely 59°15° to 62°17°) | 60°16° | 0% | 2 mph3 km/h from SSE, gusts 5 mph8 km/h | 66% | 71% | 3 |
| Sun 12p | Cloudy | 65°18° (likely 63°17° to 66°19°) | 65°18° | 0% | 2 mph3 km/h from SSE, gusts 6 mph10 km/h | 56% | 83% | 4 |
| Sun 1p | Cloudy | 68°20° (likely 66°19° to 69°21°) | 68°20° | 0% | 2 mph3 km/h from SSE, gusts 7 mph11 km/h | 49% | 87% | 4 |
| Sun 2p | Cloudy | 68°20° (likely 66°19° to 69°21°) | 69°21° | 0% | 6 mph10 km/h from WSW, gusts 9 mph14 km/h | 49% | 86% | 4 |
| Sun 3p | Cloudy | 69°21° (likely 65°18° to 69°21°) | 69°21° | 0% | 6 mph10 km/h from WSW, gusts 11 mph17 km/h | 54% | 88% | 3 |
| Sun 4p | Cloudy | 66°19° (likely 64°18° to 66°19°) | 66°19° | 0% | 6 mph10 km/h from WSW, gusts 11 mph18 km/h | 58% | 87% | 3 |
| Sun 5p | Cloudy | 64°18° (likely 61°16° to 64°18°) | 64°18° | 0% | 7 mph11 km/h from WSW, gusts 11 mph17 km/h | 66% | 90% | 1 |
| Sun 6p | Cloudy | 60°16° (likely 58°14° to 60°16°) | 60°16° | 0% | 7 mph11 km/h from WSW, gusts 10 mph16 km/h | 78% | 85% | 0 |
| Sun 7p | Cloudy | 56°13° (likely 54°12° to 58°14°) | 56°13° | 0% | 7 mph11 km/h from WSW, gusts 10 mph16 km/h | 89% | 89% | 0 |
| Sun 8p | Fog | 52°11° (likely 52°11° to 56°13°) | 52°11° | 0% | 1 mph2 km/h from W, gusts 10 mph16 km/h | 96% | 74% | 0 |
| Sun 9p | Clear | 50°10° (likely 50°10° to 54°12°) | 50°10° | 0% | 1 mph2 km/h from W, gusts 10 mph16 km/h | 99% | 30% | 0 |
| Sun 10p | Clear | 50°10° (likely 50°10° to 53°12°) | 50°10° | 0% | 1 mph2 km/h from W, gusts 12 mph20 km/h | 98% | 27% | 0 |
| Sun 11p | Clear | 50°10° (likely 50°10° to 52°11°) | 50°10° | 0% | 1 mph2 km/h from W, gusts 13 mph22 km/h | 97% | 18% | 0 |
| Mon 12a | Clear | 49°9° (likely 48°9° to 52°11°) | 49°9° | 0% | 1 mph2 km/h from W, gusts 11 mph18 km/h | 98% | 23% | 0 |
| Mon 1a | Clear | 48°9° (likely 48°9° to 52°11°) | 48°9° | 0% | 1 mph2 km/h from W, gusts 11 mph17 km/h | 99% | 32% | 0 |
| Mon 2a | Clear | 48°9° (likely 47°8° to 52°11°) | 48°9° | 0% | 1 mph2 km/h from W, gusts 10 mph15 km/h | 100% | 38% | 0 |
| Mon 3a | Clear | 47°8° (likely 46°8° to 52°11°) | 47°8° | 0% | 1 mph2 km/h from W, gusts 9 mph14 km/h | 100% | 37% | 0 |
| Mon 4a | Fog | 46°8° (likely 45°7° to 52°11°) | 46°8° | 0% | 1 mph2 km/h from W, gusts 7 mph11 km/h | 100% | 46% | 0 |
| Mon 5a | Fog | 45°7° (likely 45°7° to 51°11°) | 45°7° | 0% | 1 mph2 km/h from WNW, gusts 4 mph7 km/h | 100% | 57% | 0 |
| Mon 6a | Fog | 44°7° (likely 44°7° to 52°11°) | 44°7° | 0% | 1 mph2 km/h from WNW, gusts 2 mph3 km/h | 100% | 61% | 0 |
| Mon 7a | Fog | 44°7° (likely 44°7° to 51°11°) | 44°7° | 0% | 1 mph2 km/h from WNW, gusts 2 mph3 km/h | 100% | 64% | 0 |
| Mon 8a | Fog | 45°7° (likely 45°7° to 50°10°) | 45°7° | 0% | 1 mph2 km/h from WNW, gusts 2 mph3 km/h | 100% | 50% | 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 73, with temperatures falling to around 65 in the afternoon. Northwest wind 1 to 9 mph.
Tonight: Patchy fog between 8pm and 5am. Mostly clear. Low around 42, with temperatures rising to around 44 overnight. Southwest wind 0 to 7 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
Best day outdoors this week: the one dry, mild day the forecasts agree on (high 73°23°).
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 10am. Mostly sunny. High near 71, with temperatures falling to around 64 in the afternoon. South southwest wind 1 to 7 mph.
Night: Areas of fog after 8pm. Partly cloudy, with a low around 43. West wind 1 to 7 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
Hours this far out come from computer models only.
Official NWS forecast
Day: Areas of fog before 10am. Mostly sunny, with a high near 65. West northwest wind 1 to 14 mph, with gusts as high as 23 mph.
Night: Patchy fog after 2am. Mostly clear, with a low around 41.
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: Patchy fog before 10am. Mostly sunny, with a high near 65.
Night: Areas of fog after 11pm. Partly 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
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 8pm. Mostly cloudy, with a low around 44.
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: Patchy fog before 10am, then a slight chance of rain. Partly sunny, with a high near 63.
Night: A chance of rain. Mostly cloudy, with a low around 44.
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 chance of rain. Partly sunny, with a high near 63.
Night: A chance of rain. Mostly cloudy, with a low around 43.
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.
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
Dry
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
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.
Dry, high 73°, low 42°.
Dry, high 71°, low 43°.
Dry, high 65°, low 41°, cooling off.
Mostly dry, highs 62–66°.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (MTR) (opens in a new tab)
No meaningful changes from yesterday’s forecast.
Forecast peak 73.0 ft Sat 8 AM
Reading from Sat 7:30 AM · NWS gauge page
Reading from Sat 7:15 AM · NWS gauge page
Reading from Sat 7 AM · NWS gauge page
Reading from Sat 6:37 AM · NWS gauge page
What this week’s weather means for heating, cooling, pipes and fresh air.
About 42% 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.
Dry air outside (dew point 46°F).
Today, 11:00 AM–6:00 PM
Good stretch to open the windows.
Today’s expected high is about typical for the date.
On average 3°1° colder than normal (daily mean temperature).
Petaluma Center weather by month: normals, records, snow and freeze dates
Sunrise 7:29 AM, sunset 6:20 PM.
Mostly clear 6:47 PM–12 AM, but the moon is 99% lit and up.
Waxing gibbous
97% lit · growing