Joint Typhoon Warning Center (JTWC)
Warning Graphic Legend
Click on the red text labels below for details about information contained on the warning graphic.
The Area of Potential Gale Force Winds
- The Area of Potential Gale Force Winds is the 34 kt wind radii + the average forecast track error.
- Since no wind radii are computed for the 96hr and 120hr forecasts, the Area of Potential for Gale Force Winds for these times is the 72 hour forecast wind radii + the average forecast track error.
The color tropical cyclone symbols represent current and forecast (usually the 12, 24, 36, 48 and 72 hr) positions. The line between these positions is the forecast track.
The outermost radii represents 34 knot winds The second wind radii represents 50 knot winds The next radii represents 64 knot winds.
Labels indicate the time of the current and forecast positions.
10 = day of month (10th)
12 = hour of day (noon)
Z = universal time/Zulu