type of typhoon
classified by intensity
Typhoon is classificated by intensity. The standard of intensity is the maximum wind speed near the core of typhoon.
i) Tropical Depression: Maximum wind speed at the center reaches 34 to 48 knots (17 m/s ~ 25m/s) .
ii) Tropical Storm: Maximum wind speed at the center reaches 48 to 64 knots (25 m/s - 33 m/s) or
scale 8 - 11 on the Beaufort scale.
iii) Typhoon: Maximum wind speed at the center reaches 64 to 85 knots (33 m/s - 44 m/s) or scale
12 - 15 on the Beaufort scale.
iv) Severe Typhoon: Maximum wind speed at the center exceeds 85 knots (44 m/s) or over scale
16 on the Beaufort scale.
classified by size
Typhoon is classificated by size. The size of a typhoon is classified by the radius of the area in which the wind speed exceeds 15 m/s.
Typhoon is determined by intensity and size. So, The intensity and size represents different aspect of a typhoon. That is, we could have a strong but not large typhoon, and also a large but not strong typhoon.