Mark West Creek near Mirabel Heights
4.1 mi- Level
- 38.9 ft
- Flow
- 2 cfs
Forecast peak 38.8 ft Sat 1 PM
Reading from Sat 11:45 AM · NWS gauge page
Appearance
Ends in 5 days 1 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 12:55 PM PDT at KSTS
Sunny and 75°24°, jacket by 8 PM.
Today: low 41°5° (likely 41°5° to 49°9°), high 76°24° (likely 73°23° to 78°26°).
Now 75°24°
Sunny
No precipitation expected in the next 2 hours.
From forecast models
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 1p | Sunny | 70°21° (likely 70°21° to 76°24°) | 70°21° | 0% | 1 mph2 km/h from SSW, gusts 6 mph10 km/h | 40% | 1% | 4 |
| Sat 2p | Sunny | 73°23° (likely 72°22° to 78°26°) | 73°23° | 0% | 2 mph3 km/h from SW, gusts 6 mph10 km/h | 36% | 1% | 4 |
| Sat 3p | Sunny | 75°24° (likely 73°23° to 77°25°) | 75°24° | 0% | 3 mph5 km/h from SW, gusts 10 mph16 km/h | 35% | 0% | 3 |
| Sat 4p | Sunny | 73°23° (likely 71°22° to 75°24°) | 73°23° | 0% | 5 mph8 km/h from SW, gusts 10 mph16 km/h | 37% | 0% | 2 |
| Sat 5p | Sunny | 72°22° (likely 69°21° to 72°22°) | 72°22° | 0% | 6 mph10 km/h from SW, gusts 10 mph17 km/h | 38% | 0% | 2 |
| Sat 6p | Clear | 67°19° (likely 64°18° to 67°19°) | 67°19° | 0% | 2 mph3 km/h from S, gusts 9 mph15 km/h | 50% | 0% | 1 |
| Sat 7p | Clear | 59°15° (likely 59°15° to 61°16°) | 59°15° | 0% | 1 mph2 km/h from SSE, gusts 9 mph14 km/h | 61% | 0% | 0 |
| Sat 8p | Clear | 55°13° (likely 55°13° to 57°14°) | 55°13° | 0% | 0 mph0 km/h, gusts 6 mph9 km/h | 73% | 0% | 0 |
| Sat 9p | Clear | 53°12° (likely 52°11° to 55°13°) | 53°12° | 0% | 0 mph0 km/h, gusts 5 mph8 km/h | 80% | 3% | 0 |
| Sat 10p | Clear | 51°11° (likely 50°10° to 54°12°) | 51°11° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 83% | 13% | 0 |
| Sat 11p | Clear | 50°10° (likely 48°9° to 52°11°) | 50°10° | 0% | 0 mph0 km/h, gusts 3 mph4 km/h | 86% | 20% | 0 |
| Sun 12a | Partly cloudy | 50°10° (likely 48°9° to 51°11°) | 50°10° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 83% | 39% | 0 |
| Sun 1a | Partly cloudy | 48°9° (likely 47°8° to 51°11°) | 48°9° | 0% | 0 mph0 km/h, gusts 1 mph2 km/h | 84% | 61% | 0 |
| Sun 2a | Partly cloudy | 47°8° (likely 46°8° to 50°10°) | 47°8° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 85% | 61% | 0 |
| Sun 3a | Partly cloudy | 45°7° (likely 44°7° to 49°9°) | 45°7° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 86% | 64% | 0 |
| Sun 4a | Partly cloudy | 44°7° (likely 44°7° to 49°9°) | 44°7° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 87% | 66% | 0 |
| Sun 5a | Partly cloudy | 43°6° (likely 43°6° to 49°9°) | 43°6° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 85% | 68% | 0 |
| Sun 6a | Partly cloudy | 42°6° (likely 42°6° to 48°9°) | 42°6° | 0% | 0 mph0 km/h, gusts 1 mph2 km/h | 85% | 69% | 0 |
| Sun 7a | Partly cloudy | 42°6° (likely 41°5° to 47°8°) | 42°6° | 0% | 1 mph2 km/h from ESE, gusts 1 mph2 km/h | 89% | 70% | 0 |
| Sun 8a | Partly sunny | 42°6° (likely 41°5° to 48°9°) | 43°6° | 0% | 1 mph2 km/h from E, gusts 1 mph2 km/h | 88% | 70% | 0 |
| Sun 9a | Mostly cloudy | 47°8° (likely 45°7° to 53°12°) | 47°8° | 0% | 1 mph2 km/h from ENE, gusts 1 mph2 km/h | 82% | 73% | 1 |
| Sun 10a | Cloudy | 54°12° (likely 53°12° to 59°15°) | 54°12° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 74% | 75% | 2 |
| Sun 11a | Cloudy | 58°14° (likely 58°14° to 63°17°) | 58°14° | 0% | 1 mph2 km/h from S, gusts 3 mph4 km/h | 64% | 81% | 3 |
| Sun 12p | Cloudy | 64°18° (likely 64°18° to 67°19°) | 64°18° | 0% | 2 mph3 km/h from S, gusts 5 mph7 km/h | 58% | 81% | 3 |
| Sun 1p | Cloudy | 67°19° (likely 67°19° to 70°21°) | 67°19° | 0% | 2 mph3 km/h from S, gusts 6 mph10 km/h | 52% | 85% | 4 |
| Sun 2p | Cloudy | 68°20° (likely 68°20° to 72°22°) | 69°21° | 0% | 3 mph5 km/h from S, gusts 7 mph12 km/h | 47% | 86% | 4 |
| Sun 3p | Cloudy | 71°22° (likely 70°21° to 72°22°) | 71°22° | 0% | 3 mph5 km/h from SSW, gusts 9 mph14 km/h | 46% | 88% | 3 |
| Sun 4p | Cloudy | 68°20° (likely 68°20° to 71°22°) | 69°21° | 0% | 5 mph8 km/h from SW, gusts 9 mph15 km/h | 48% | 89% | 2 |
| Sun 5p | Cloudy | 68°20° (likely 66°19° to 68°20°) | 68°20° | 0% | 5 mph8 km/h from SW, gusts 10 mph16 km/h | 49% | 91% | 1 |
| Sun 6p | Cloudy | 64°18° (likely 62°17° to 64°18°) | 64°18° | 0% | 2 mph3 km/h from SSW, gusts 8 mph12 km/h | 62% | 89% | 0 |
| Sun 7p | Cloudy | 57°14° (likely 57°14° to 59°15°) | 57°14° | 0% | 2 mph3 km/h from SSW, gusts 6 mph10 km/h | 72% | 93% | 0 |
| Sun 8p | Mostly cloudy | 55°13° (likely 54°12° to 56°13°) | 55°13° | 0% | 1 mph2 km/h from S, gusts 7 mph11 km/h | 81% | 51% | 0 |
| Sun 9p | Partly cloudy | 52°11° (likely 52°11° to 55°13°) | 52°11° | 0% | 0 mph0 km/h, gusts 6 mph10 km/h | 89% | 23% | 0 |
| Sun 10p | Clear | 51°11° (likely 49°9° to 53°12°) | 51°11° | 0% | 0 mph0 km/h, gusts 6 mph9 km/h | 92% | 12% | 0 |
| Sun 11p | Clear | 49°9° (likely 48°9° to 52°11°) | 49°9° | 0% | 0 mph0 km/h, gusts 5 mph7 km/h | 95% | 15% | 0 |
| Mon 12a | Fog | 48°9° (likely 46°8° to 50°10°) | 49°9° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 95% | 37% | 0 |
| Mon 1a | Fog | 47°8° (likely 47°8° to 49°9°) | 47°8° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 99% | 55% | 0 |
| Mon 2a | Fog | 44°7° (likely 44°7° to 49°9°) | 44°7° | 0% | 1 mph2 km/h from WNW, gusts 2 mph3 km/h | 100% | 52% | 0 |
| Mon 3a | Fog | 44°7° (likely 44°7° to 49°9°) | 44°7° | 0% | 1 mph2 km/h from WNW, gusts 2 mph4 km/h | 100% | 54% | 0 |
| Mon 4a | Fog | 43°6° (likely 43°6° to 48°9°) | 43°6° | 0% | 1 mph2 km/h from WNW, gusts 3 mph5 km/h | 100% | 41% | 0 |
| Mon 5a | Fog | 41°5° (likely 41°5° to 48°9°) | 41°5° | 0% | 1 mph2 km/h from NW, gusts 3 mph5 km/h | 100% | 27% | 0 |
| Mon 6a | Fog | 42°6° (likely 42°6° to 47°8°) | 42°6° | 0% | 1 mph2 km/h from NW, gusts 3 mph5 km/h | 100% | 21% | 0 |
| Mon 7a | Fog | 42°6° (likely 42°6° to 47°8°) | 42°6° | 0% | 1 mph2 km/h from NW, gusts 2 mph4 km/h | 100% | 25% | 0 |
| Mon 8a | Fog | 43°6° (likely 42°6° to 48°9°) | 43°6° | 0% | 1 mph2 km/h from NW, gusts 2 mph3 km/h | 100% | 30% | 0 |
| Mon 9a | Fog | 47°8° (likely 46°8° to 52°11°) | 47°8° | 0% | 1 mph2 km/h from NW, gusts 2 mph3 km/h | 98% | 26% | 1 |
| Mon 10a | Sunny | 52°11° (likely 52°11° to 57°14°) | 52°11° | 0% | 1 mph2 km/h from NW, gusts 7 mph11 km/h | 94% | 10% | 2 |
| Mon 11a | Partly sunny | 58°14° (likely 58°14° to 62°17°) | 58°14° | 0% | 3 mph5 km/h from W, gusts 8 mph13 km/h | 89% | 15% | 3 |
| Mon 12p | Mostly sunny | 61°16° (likely 61°16° to 65°18°) | 61°16° | 0% | 3 mph5 km/h from W, gusts 8 mph12 km/h | 82% | 21% | 4 |
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Official NWS forecast
Today: Sunny. High near 76, with temperatures falling to around 72 in the afternoon. Southwest wind 1 to 6 mph.
Tonight: Mostly clear. Low around 41, with temperatures rising to around 43 overnight. East northeast 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 76°24°).
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Official NWS forecast
Day: Partly sunny. High near 72, with temperatures falling to around 68 in the afternoon. Southeast wind 0 to 5 mph.
Night: Areas of fog after 11pm. Mostly cloudy, with a low around 40. West southwest wind around 2 mph.
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
Official NWS forecast
Day: Patchy fog before 11am. Mostly sunny, with a high near 68. West northwest wind 1 to 8 mph.
Night: Patchy fog after 2am. Mostly clear, with a low around 39.
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. Sunny, with a high near 69.
Night: Areas of fog after 10pm. 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: Areas of fog before 10am. Partly sunny, with a high near 66.
Night: Areas of fog after 11pm. Mostly cloudy, with a low around 41.
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. Mostly sunny, with a high near 65.
Night: Patchy fog after 5am. Partly cloudy, with a low around 38.
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 8am. Mostly sunny, with a high near 64.
Night: A slight chance of rain between 11pm and 2am, then patchy fog and a slight chance of rain. Partly cloudy, with a low around 37.
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.
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
20% chance · 0.06 in1.4 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.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Dry, high 76°, low 41°.
Dry, high 72°, low 40°, cooling off.
Dry, high 68°, low 39°, cooling off.
Mostly dry, highs 62–69°.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (MTR) (opens in a new tab)
No meaningful changes from yesterday’s forecast.
Forecast peak 38.8 ft Sat 1 PM
Reading from Sat 11:45 AM · NWS gauge page
Forecast peak 0.1 ft Sat 1 PM
Reading from Sat 11:45 AM · NWS gauge page
Forecast peak 1.8 ft Sat 1 PM
Reading from Sat 11:15 AM · NWS gauge page
Forecast peak 3.6 ft Sat 1 PM
Reading from Sat 11:30 AM · NWS gauge page
What this week’s weather means for heating, cooling, pipes and fresh air.
About 34% 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 6 hours are near freezing and damp, when outdoor units defrost more often.
Dry air outside (dew point 44°F).
Today, 2:00 PM–6:00 PM
Good stretch to open the windows.
Today’s expected high is 2°1° warmer than typical.
Windsor 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
98% lit · growing