Hurricane/Typhoon Track — Map graphically depicts the current and forecast positions of all active tropical systems. Storms are color coded for easy recognition:
Tropical Depression (White) - Wind speed less than 35 knots.
Tropical Storm (Yellow) - Wind speed between 35 knots and 64 knots.
Hurricane/Typhoon/Tropical Cyclone (Red) - Wind speed greater then or equal to 65 knots.
Depicted for each system is the name of the storm at the current position. Also depicted is the day of the month and time of the current position or forecast, underneath the day and time is the central pressure of the storm in millibars (mb), and below that is the wind speed in knots.
Each track contains the current position and then 12, 24, 36, 48 and 72-hour forecast positions and data.
Maps are updated 4 times per day (0000, 0600, 1200 and 1800 for international areas, 0400, 1000, 1600 and 2200 for Atlantic, Caribbean and Eastern Pacific storms handled by the U.S. National Hurricane Center. Maps are available approximately 30 minutes past the update times.