Alcatraz Island Weather

37°50'N 122°25'W

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Current Conditions
Broken Clouds
61°F
Feels like: 61°F
Wind Chill: 61°F Ceiling: 20000ft
Heat Index: 61°F Visibility: 10mi
Dew Point: 50°F Wind: 16mph
Humidity: 67% Direction: 280° (W)
Pressure: 29.88" Gusts: -
Reported: 44 minutes 36 seconds ago
April 19, 2019 4:00 pm PST
Location: 37.798N 122.393W or 2 nautical miles SSE of search location of 37.8267N 122.417W.
Wind Direction: SSW (210°)
Wind Speed: 13 knots
Wind Gust: 18 knots
Atmospheric Pressure: 29.85 in (1010.9 mb)
Pressure Tendency: -0.04 in (-1.5 mb)
Air Temperature: 56°F (13.4°C)
April 19, 2019 4:00 pm PST
Location: 37.803N 122.397W or 2 nautical miles SSE of search location of 37.8267N 122.417W.
Air Temperature: 58°F (14.7°C)
Dew Point: 54°F (12.1°C)
Visibility: 5.9 nmi
April 19, 2019 4:00 pm PST
Location: 37.806N 122.466W or 3 nautical miles WSW of search location of 37.8267N 122.417W.
Wind Direction: WSW (250°)
Wind Speed: 10 knots
Wind Gust: 14 knots
Atmospheric Pressure: 29.90 in (1012.5 mb)
Pressure Tendency: -0.05 in (-1.6 mb)
Air Temperature: 53°F (11.5°C)
Water Temperature: 55°F (13.0°C)
Friday, April 19
6:29am / 7:49pm 8:21pm / 6:59am
Mostly Cloudy
61°
51°
Day:
Night: Mostly cloudy. Low 51F. Winds W at 15 to 25 mph.
Saturday, April 20
6:28am / 7:49pm 9:29pm / 7:34am
Partly Cloudy/Wind
57°
49°
Day: Windy. Cloudy skies will become sunny in the afternoon. High 57F. Winds WNW at 25 to 35 mph. Winds could occasionally gust over 50 mph.
Night: Clear skies. Gusty winds early. Low 49F. WNW winds at 20 to 30 mph, decreasing to 5 to 10 mph. Winds could occasionally gust over 40 mph.
Sunday, April 21
6:26am / 7:50pm 10:35pm / 8:12am
Sunny
62°
50°
Mainly sunny. Highs in the low 60s and lows in the low 50s.
Monday, April 22
6:25am / 7:51pm 11:37pm / 8:53am
Mostly Sunny
67°
53°
Plenty of sun. Highs in the upper 60s and lows in the low 50s.
Tuesday, April 23
6:24am / 7:52pm 11:59pm / 9:38am
Sunny
69°
53°
Sunny. Highs in the upper 60s and lows in the low 50s.
Wednesday, April 24
6:23am / 7:53pm 12:35am / 10:28am
Mostly Sunny
66°
52°
Mostly sunny. Highs in the mid 60s and lows in the low 50s.
Thursday, April 25
6:21am / 7:54pm 1:26am / 11:19am
Sunny
62°
51°
Sunny. Highs in the low 60s and lows in the low 50s.
Friday, April 26
6:20am / 7:55pm 2:12am / 12:14pm
Partly Cloudy
62°
50°
Mix of sun and clouds. Highs in the low 60s and lows in the low 50s.
Saturday, April 27
6:19am / 7:56pm 2:52am / 1:10pm
Sunny
62°
50°
Abundant sunshine. Highs in the low 60s and lows in the low 50s.
Sunday, April 28
6:18am / 7:57pm 3:27am / 2:07pm
Mostly Sunny
62°
49°
A few clouds. Highs in the low 60s and lows in the upper 40s.
Wind Forecast
Day FridaySaturdaySunday
MPH 19 14 12 15 20 26 25 14 6 4 7 17
WSW
WSW
W
W
WNW
W
WNW
WNW
NW
NW
WNW
W
Radar

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Marine Forecast
Synopsis: PZZ500-201000- 237 PM PDT Fri Apr 19 2019 .Synopsis for the Central California Coast and Bays Including the Monterey Bay...Greater Farallones...and Cordell Bank National Marine Sanctuaries... Northwest winds will increase over the northern waters and near the coast today through Saturday as high pressure develops off of the Pacific Northwest coast. A moderate northwest swell will also prevail through the weekend. $$
Tonight
WSW wind 17 to 19 kt, with gusts as high as 26 kt. Mostly cloudy.
Saturday
W wind 20 to 26 kt, with gusts as high as 37 kt. Partly sunny.
Saturday Night
W wind 20 to 25 kt becoming variable and less than 5 kt in the evening. Winds could gust as high as 35 kt. Partly cloudy.
Sunday
Variable winds less than 5 kt becoming WSW 11 to 16 kt in the morning. Winds could gust as high as 23 kt. Sunny.
Sunday Night
W wind 13 to 18 kt becoming variable and less than 5 kt after midnight. Winds could gust as high as 25 kt. Mostly clear.
Monday
Variable winds less than 5 kt becoming W 8 to 13 kt in the afternoon. Sunny.
Monday Night
W wind 5 to 13 kt becoming NW in the evening. Mostly clear.
Tuesday
Variable winds less than 5 kt becoming NW around 6 kt in the afternoon. Sunny.
Tuesday Night
W wind 5 to 8 kt becoming variable and less than 5 kt in the evening. Mostly clear.

*Notices:

  1. This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
  2. The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.