Coastal Flood Advisory
Starts in 1 h 36 min
When
From 8 AM Saturday to 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 1.1 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 5:55 AM PDT at KNUQ

Loyola, CA weather

Clear and 50°10°.

Mostly agree

Now 50°10°

Clear

Wind: Calm; Up to 5 mph8 km/h through 6 PM
Dew point: 46°8°; Comfortable
UV index: 0Low; Moderate 11 AM–5 PM · peak 5
Air quality: 32Good; Main pollutant: PM2.5 (fine particles)
Pressure: 30.04 inHg1017 hPa; Steady over the last 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

9°5° cooler than this time yesterday (59°15° then, 50°10° now)

Good hours for

Above 60°16° today by 11 AM
High 72°22° today at 3 PM
Below 60°16° tonight after 9 PM

This morningUp to 63°17° by 11 AM · Clear
This afternoonUp to 72°22° by 3 PM · Clear
TonightDown to 51°11° by 5 AM · Clear
Tomorrow morningUp to 66°19° by 11 AM · Partly cloudy
Tomorrow afternoonUp to 74°23° by 3 PM · Mostly cloudy
Tomorrow nightDown to 50°10° by 4 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 6a	Clear	49°9° (likely 49°9° to 54°12°)	49°9°	0%	2 mph3 km/h from W, gusts 5 mph8 km/h	68%	0%	0
Sat 7a	Sunny	49°9° (likely 49°9° to 54°12°)	49°9°	0%	2 mph3 km/h from W, gusts 5 mph9 km/h	68%	0%	0
Sat 8a	Sunny	50°10° (likely 50°10° to 55°13°)	50°10°	0%	2 mph3 km/h from W, gusts 7 mph11 km/h	67%	0%	0
Sat 9a	Sunny	54°12° (likely 54°12° to 58°14°)	54°12°	0%	3 mph5 km/h from WNW, gusts 7 mph11 km/h	64%	0%	1
Sat 10a	Sunny	58°14° (likely 58°14° to 63°17°)	58°14°	0%	3 mph5 km/h from N, gusts 8 mph12 km/h	59%	0%	2
Sat 11a	Sunny	63°17° (likely 62°17° to 66°19°)	63°17°	0%	3 mph5 km/h from N, gusts 9 mph15 km/h	50%	0%	3
Sat 12p	Sunny	67°19° (likely 64°18° to 68°20°)	67°19°	0%	3 mph5 km/h from N, gusts 11 mph17 km/h	46%	0%	4
Sat 1p	Sunny	69°21° (likely 66°19° to 70°21°)	69°21°	0%	5 mph8 km/h from N, gusts 10 mph16 km/h	45%	0%	5
Sat 2p	Sunny	70°21° (likely 67°19° to 72°22°)	71°22°	0%	5 mph8 km/h from N, gusts 9 mph15 km/h	45%	0%	5
Sat 3p	Sunny	72°22° (likely 68°20° to 74°23°)	72°22°	0%	5 mph8 km/h from N, gusts 8 mph14 km/h	44%	0%	4
Sat 4p	Sunny	72°22° (likely 68°20° to 74°23°)	72°22°	0%	5 mph8 km/h from N, gusts 8 mph13 km/h	43%	0%	3
Sat 5p	Sunny	71°22° (likely 67°19° to 72°22°)	71°22°	0%	3 mph5 km/h from N, gusts 7 mph11 km/h	43%	0%	2
Sat 6p	Clear	68°20° (likely 63°17° to 68°20°)	68°20°	0%	2 mph3 km/h from N, gusts 6 mph10 km/h	51%	0%	1
Sat 7p	Clear	63°17° (likely 59°15° to 63°17°)	63°17°	0%	1 mph2 km/h from WNW, gusts 5 mph9 km/h	56%	0%	0
Sat 8p	Clear	60°16° (likely 57°14° to 60°16°)	60°16°	0%	0 mph0 km/h, gusts 5 mph8 km/h	61%	0%	0
Sat 9p	Clear	58°14° (likely 55°13° to 59°15°)	58°14°	0%	0 mph0 km/h, gusts 4 mph7 km/h	62%	1%	0
Sat 10p	Clear	56°13° (likely 53°12° to 58°14°)	56°13°	0%	1 mph2 km/h from S, gusts 4 mph7 km/h	62%	1%	0
Sat 11p	Clear	55°13° (likely 53°12° to 57°14°)	55°13°	0%	1 mph2 km/h from S, gusts 4 mph7 km/h	64%	1%	0
Sun 12a	Clear	54°12° (likely 52°11° to 56°13°)	54°12°	0%	1 mph2 km/h from S, gusts 4 mph7 km/h	64%	1%	0
Sun 1a	Clear	54°12° (likely 52°11° to 55°13°)	54°12°	0%	1 mph2 km/h from S, gusts 4 mph6 km/h	64%	0%	0
Sun 2a	Clear	53°12° (likely 51°11° to 55°13°)	53°12°	0%	0 mph0 km/h, gusts 3 mph5 km/h	64%	1%	0
Sun 3a	Mostly clear	52°11° (likely 51°11° to 55°13°)	52°11°	0%	0 mph0 km/h, gusts 3 mph5 km/h	64%	15%	0
Sun 4a	Clear	52°11° (likely 50°10° to 55°13°)	52°11°	0%	0 mph0 km/h, gusts 3 mph5 km/h	65%	42%	0
Sun 5a	Partly cloudy	51°11° (likely 50°10° to 55°13°)	51°11°	0%	0 mph0 km/h, gusts 3 mph5 km/h	63%	47%	0
Sun 6a	Clear	50°10° (likely 49°9° to 55°13°)	50°10°	0%	0 mph0 km/h, gusts 3 mph5 km/h	69%	11%	0
Sun 7a	Partly sunny	50°10° (likely 48°9° to 54°12°)	50°10°	0%	0 mph0 km/h, gusts 4 mph7 km/h	70%	60%	0
Sun 8a	Mostly cloudy	51°11° (likely 50°10° to 55°13°)	51°11°	0%	1 mph2 km/h from ESE, gusts 4 mph7 km/h	71%	68%	0
Sun 9a	Mostly cloudy	55°13° (likely 53°12° to 58°14°)	55°13°	0%	1 mph2 km/h from ESE, gusts 3 mph4 km/h	70%	69%	1
Sun 10a	Mostly cloudy	61°16° (likely 56°13° to 63°17°)	61°16°	0%	1 mph2 km/h from ESE, gusts 3 mph5 km/h	64%	57%	2
Sun 11a	Partly sunny	66°19° (likely 61°16° to 67°19°)	66°19°	0%	2 mph3 km/h from N, gusts 5 mph9 km/h	57%	57%	3
Sun 12p	Partly sunny	70°21° (likely 65°18° to 70°21°)	70°21°	0%	2 mph3 km/h from N, gusts 5 mph9 km/h	53%	58%	4
Sun 1p	Partly sunny	72°22° (likely 68°20° to 72°22°)	72°22°	0%	2 mph3 km/h from N, gusts 7 mph12 km/h	52%	75%	4
Sun 2p	Cloudy	73°23° (likely 70°21° to 73°23°)	73°23°	0%	5 mph8 km/h from NW, gusts 7 mph11 km/h	51%	81%	4
Sun 3p	Cloudy	74°23° (likely 69°21° to 74°23°)	75°24°	0%	5 mph8 km/h from NW, gusts 8 mph13 km/h	51%	82%	4
Sun 4p	Cloudy	73°23° (likely 69°21° to 73°23°)	73°23°	0%	5 mph8 km/h from NW, gusts 9 mph14 km/h	51%	80%	3
Sun 5p	Cloudy	72°22° (likely 66°19° to 72°22°)	72°22°	0%	2 mph3 km/h from WNW, gusts 8 mph13 km/h	52%	82%	2
Sun 6p	Cloudy	69°21° (likely 62°17° to 69°21°)	69°21°	0%	2 mph3 km/h from WNW, gusts 8 mph13 km/h	60%	84%	0
Sun 7p	Cloudy	64°18° (likely 58°14° to 64°18°)	64°18°	0%	2 mph3 km/h from WNW, gusts 8 mph12 km/h	68%	78%	0
Sun 8p	Mostly clear	60°16° (likely 56°13° to 60°16°)	60°16°	0%	0 mph0 km/h, gusts 6 mph10 km/h	74%	46%	0
Sun 9p	Clear	57°14° (likely 54°12° to 58°14°)	57°14°	0%	0 mph0 km/h, gusts 5 mph9 km/h	77%	30%	0
Sun 10p	Clear	55°13° (likely 52°11° to 56°13°)	55°13°	0%	0 mph0 km/h, gusts 6 mph10 km/h	79%	22%	0
Sun 11p	Clear	54°12° (likely 51°11° to 55°13°)	55°13°	0%	1 mph2 km/h from WSW, gusts 6 mph9 km/h	80%	28%	0
Mon 12a	Clear	53°12° (likely 52°11° to 55°13°)	53°12°	0%	1 mph2 km/h from WSW, gusts 7 mph11 km/h	81%	20%	0
Mon 1a	Clear	53°12° (likely 52°11° to 54°12°)	53°12°	0%	1 mph2 km/h from WSW, gusts 7 mph11 km/h	82%	22%	0
Mon 2a	Clear	52°11° (likely 51°11° to 54°12°)	52°11°	0%	1 mph2 km/h from SW, gusts 7 mph11 km/h	82%	24%	0
Mon 3a	Mostly clear	51°11° (likely 51°11° to 53°12°)	51°11°	0%	1 mph2 km/h from SW, gusts 7 mph11 km/h	83%	29%	0
Mon 4a	Mostly clear	50°10° (likely 50°10° to 53°12°)	50°10°	0%	1 mph2 km/h from SW, gusts 6 mph10 km/h	83%	31%	0
Mon 5a	Partly cloudy	50°10° (likely 50°10° to 52°11°)	50°10°	0%	1 mph2 km/h from SW, gusts 5 mph9 km/h	84%	36%	0

Days ahead

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

Today, Oct 24. Sunny. High 73°23°, low 49°9°. Typical 74°23° / 51°11°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 72°22°
  Dry
3. Evening
  6 PM–midnight
  Clear, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 51°11°
  Dry
Official NWS forecast
Today: Sunny. High near 73, with temperatures falling to around 71 in the afternoon. Northwest wind around 5 mph.
Tonight: Mostly clear. Low around 49, with temperatures rising to around 51 overnight. South southwest wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
68°20°–74°23°
Low, likely
49°9°–53°12°
Typical high / low
74°23° / 51°11°
Wind
6 mph10 km/h, gusts 24 mph38 km/h
UV peak
5
Tomorrow, Oct 25. Partly sunny. High 76°24°, low 48°9°. Typical 74°23° / 51°11°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly cloudy, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 74°23°
  Dry
3. Evening
  6 PM–midnight
  Clear, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 50°10°
  Dry
Official NWS forecast
Day: Mostly sunny. High near 76, with temperatures falling to around 72 in the afternoon. North northwest wind 0 to 5 mph.
Night: Partly cloudy, with a low around 48. West wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
70°21°–76°24°
Low, likely
48°9°–53°12°
Typical high / low
74°23° / 51°11°
Wind
8 mph13 km/h, gusts 16 mph26 km/h
UV peak
4
Monday, Oct 26. Fog. High 70°21°, low 46°8°. Typical 73°23° / 50°10°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 49°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Patchy fog between 8am and 9am. Mostly sunny, with a high near 70. West wind 1 to 8 mph.
Night: Partly cloudy, with a low around 46.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–70°21°
Low, likely
46°8°–52°11°
Typical high / low
73°23° / 50°10°
Wind
8 mph14 km/h, gusts 22 mph35 km/h
UV peak
5
Tuesday, Oct 27. Fog. High 69°21°, low 48°9°. Typical 73°23° / 50°10°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 67°20°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 49°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Patchy fog before 10am. Mostly sunny, with a high near 69.
Night: Partly cloudy, with a low around 48.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–69°21°
Low, likely
46°8°–51°11°
Typical high / low
73°23° / 50°10°
Wind
8 mph13 km/h, gusts 16 mph25 km/h
UV peak
5
Wednesday, Oct 28. Partly sunny. High 70°21°, low 49°9°. Typical 73°23° / 50°10°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 56°14°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 53°12°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 70.
Night: Mostly cloudy, with a low around 49.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–70°21°
Low, likely
46°8°–52°11°
Typical high / low
73°23° / 50°10°
Wind
7 mph12 km/h, gusts 14 mph22 km/h
UV peak
4
Thursday, Oct 29. Rain. High 67°19°, low 49°9°. Typical 72°22° / 50°10°. Rain, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 54°12°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 48°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Patchy fog between 7am and 9am, then a slight chance of rain. Partly sunny, with a high near 67.
Night: A chance of rain. Mostly cloudy, with a low around 49.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–67°19°
Low, likely
49°9°–52°11°
Typical high / low
72°22° / 50°10°
Wind
9 mph14 km/h, gusts 17 mph27 km/h
UV peak
4
Friday, Oct 30. Rain. High 66°19°, low 48°9°. Typical 72°22° / 50°10°. Rain 0.02 in0.5 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 48°9°
  20% chance
2. Afternoon
  noon–6 PM
  Sunny, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 51°11°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 46°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain before 7am, then a chance of rain and patchy fog. Partly sunny, with a high near 66.
Night: A chance of rain. Mostly cloudy, with a low around 48.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
60°16°–66°19°
Low, likely
45°7°–49°9°
Typical high / low
72°22° / 50°10°
Wind
8 mph13 km/h, gusts 21 mph33 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 63°17°, low 45°7°. Typical 72°22° / 49°9°. Rain 0.03 in0.8 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 47°8°
  20% chance
2. Afternoon
  noon–6 PM
  Sunny, 63°17°
  30% chance · 0.02 in0.5 mm
3. Evening
  6 PM–midnight
  Clear, 52°11°
  30% chance
4. Overnight
  midnight–6 AM
  Clear, 45°7°
  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.
High, likely
60°16°–68°20°
Low, likely
40°4°–48°9°
Typical high / low
72°22° / 49°9°
Wind
7 mph11 km/h, gusts 17 mph28 km/h
UV peak
4
Sunday, Nov 1. Sunny. High 65°18°, low 45°7°. Typical 72°22° / 49°9°. Rain, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 65°18°
  20% chance
3. Evening
  6 PM–midnight
  Clear, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 50°10°
  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°–72°22°
Low, likely
38°3°–48°9°
Typical high / low
72°22° / 49°9°
Wind
9 mph14 km/h, gusts 24 mph38 km/h
UV peak
4
Monday, Nov 2. Cloudy. High 64°18°, low 51°11°. Typical 71°22° / 49°9°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 53°12°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 58°14°
  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
61°16°–65°18°
Low, likely
46°8°–59°15°
Typical high / low
71°22° / 49°9°
Wind
7 mph12 km/h, gusts 21 mph33 km/h
UV peak
1

10 days15 days30 days

The outlook

Today
Dry, high 73°, low 49°.
Tomorrow
Dry, high 76°, low 48°, warming up.
Monday
Dry, high 70°, low 46°, cooling off.
Rest of week
Mostly dry, highs 63–70°.

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

Hale Creek near Magdalena Avenue

0.6 mi

Below flood stage

Level: 1.1 ft
Flow: under 1 cfs

Reading from Sat 4:45 AM · NWS gauge page

Permanente Creek above Berry Avenue

1.0 mi

Below flood stage

Level: 2.3 ft
Flow: 25 cfs

Reading from Sat 4:15 AM · NWS gauge page

West Fork Permanente Creek below Deer Farm

1.3 mi

Level: 2.6 ft

Reading from Sat 4:15 AM · NWS gauge page

Permanente Creek at Rancho San Antonio

1.3 mi

Below flood stage

Level: 2.5 ft
Flow: under 1 cfs

Reading from Sat 4:15 AM · NWS gauge page

For your home

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

Heating this week

About 41% less heating than a typical week.

This week 14Typical 24

Heating degree days, base 65°F

Comfort

Dry air outside (dew point 46°F).

Open the windows?

Today, 11:00 AM–8:00 PM

Good stretch to open the windows.

Is this typical?

San Jose · 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

On average 1° colder than normal (daily mean temperature).

+1°±0°SunOct 18
±0°MonOct 19
−2°−1°TueOct 20
±0°WedOct 21
−3°−2°ThuOct 22
—FriOct 23
—SatOct 24

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

Sun & moon

Sun

Daylight: 10 h 54 min; Losing 2 min 7 s a day; shortest Dec 21, 1 h 19 min less
Golden hour: 5:43–6:35 PM; Morning 7:08–8:01 AM
Blue hour: 6:35–6:45 PM; Morning 6:58–7:08 AM; first light 6:58 AM

Stars tonight? Unknown

Cloud forecast not available for tonight.

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:47 AM · rises 5:18 PM
Full moon: Oct 25
New moon: Nov 8

Looking south from Loyola. The highest point on the skyline is about 3,400 ft, 17 mi away.Skyline from USGS elevation data, heights drawn up to 2.5× taller. Sky, sun and moon as they are now.

1 active weather alert

Coastal Flood Advisory

Loyola, CA weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Hale Creek near Magdalena Avenue

Permanente Creek above Berry Avenue

West Fork Permanente Creek below Deer Farm

Permanente Creek at Rancho San Antonio

For your home

Heating this week

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Unknown

Moon