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Marine Forecasts
Local
Pacific Surface Analysis  Current Forecast  IR Eastern Pacific (including tropics) California Pressure Gradient Table  
San Diego NWS San Diego, CA Pacific Surface Analysis  Forecast 24 hrs from now  Interactive Marine Buoy Observations-- For So. Calif. Pressure Gradients for California  
National Weather
Service Forecast Los Angeles/Oxnard
Pacific Surface Analysis  Forecast 48 hrs from now  1 Km Visible over Southern California
( Daylight only)
 
Sea Level Pressure Analysis  
Southern California Marine Forecast 
Jet Stream Analysis & Forecast West Coast Sea Level Pressure (satellite pic) 
Regional
Marine Weather San Francisco
Alaska Bristol  Peninsula
& Bay
  
Chinak Bay   North Gulf Coast   
Southeast Alaska &
Eastern Gulf Coast 
 
Southwest Alaska & Aleutian Islands  Western & Arctic Alaskan Coastal Waters 
Coastal and Inland Waters-Washington Arkansas-
Red Basin River
Chesapeake Bay Northeast USA
Southern USA Tropical Weather On-line
National
Sailcast
Marine Weather
National Weather
Service Welcome Page
Marine Forecasts & Satellite Images-NWS
Storm Warning Signals
Small Craft Advisory
 Forecast winds of 18 to 33 knots
Gale Warning:
Forecast winds of 34 to 47 knots. 
Storm Warning:
Forecast winds of 48 knots or greater.
Tropical Storm Warning:
Forecast winds of 34 to 63 knots associated with a tropical storm.
Hurricane Warning:
Winds of 64 knots plus associated with a hurricane.
Wind Speed/Surface Height/Wind Knots/Wave Conditions
0-3 Kts - Smooth, Surface Calm
4-6 Kts - Ripples, Under 1 ft.
7-10 Kts - Smooth Wavelets, 1 - 2 ft.
11-16 Kts - Little Waves, 2 4 ft.
17-21 Kts - Moderate Waves, whitecaps, 4 - 8 ft.
22-27 Kts - Big Waves, spray, 8 13 ft.
28-33 Kts - Heaped Seas, Foam from breaking waves, 13 - 20 ft.
34-40 Kts - High Waves, Foam blown in well-marked streaks, 13 -20 ft.
41-47 Kts - Seas Roll, Spray may reduce visibility, 13 - 20 ft.
48-55 Kts - Very High Waves, White Seas, Overhanging Crests, 20 - 30 ft.
56-63 Kts - Exceptionally High Waves, 30 - 45 ft.
63 + Kts - Air filled with foam, Seas completely white, over 45 ft.
Beaufort Wind Scale
0 under 1 knot
1 - Light Air 1 - 3 knots Or just sufficient to give steerage way.
2 - Light Breeze 4 - 6 knots Or that in which a man-of-war with
3 - Gentle Breeze 7 - 10 knots all sail set, and clean full would go
4 - Moderate Breeze 11 - 16 knots in smooth water from.
5 - Fresh Breeze 17 - 21 knots Or that to which 
6 - Strong Breeze 22 - 27 knots a well-conditioned
7 - Moderate Gale 28 - 33 knots man-of-war could just 
8 - Fresh Gale 34 - 40 knots carry in chase,
9 - Strong Gale 41 - 47 knots full an by
10 - Whole Gale 48 - 55 knots or that with which she could scarcely bear close-reefed main-topsail and reefed fore-sail
11 - Storm 56 - 63 knots Or that which would reduce her to storm staysails.
12 - Hurricane 64 and over Or that which no canvas could withstand.
Temperature Conversions
To convert Fahrenheit temperatures into Celsius
Begin by subtracting 32 from the Fahrenheit number. 
Divide the answer by 9. 
Then multiply that answer by 5. 

Here's an example: Change 81 degrees Fahrenheit to Celsius: 81 minus 32 is 49. Then, 48 divided by 9 is 5.3. Finally, 5.3 times 5 is 26.5 degrees Celsius. 
To convert Celsius temperatures into Fahrenheit:
Begin by multiplying the Celsius temperature by 9. 
Divide the answer by 5. 
Now add 32. 

Here's an example: Change 32 degrees Celsius to Fahrenheit: 32 times 9 is 288. Then 288 divided by 5 is 57.6. Finally, 57.6 plus 32 is 89.6 degrees Fahrenheit. 

What do all those little squiggles and arrows mean on the weather chart? Thanks to UCSD, you can find out on the Weather Station Plot and Common Weather Symbols page they host. thanks!

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