Tropical Cyclone basins of the world, along with the abbreviations I'll be using |
The classification of tropical cyclone intensity that I'll be using is the Saffir-Simpson Hurricane Wind Scale , which is likely the most widely used scale. Although the scale was initially developed based on North Atlantic (NAtl) storms, it essentially can be applied worldwide. Most storms, or regions that may become storms, are first listed as areas of investigation and are labeled as INVEST followed by an identifying number and basin tag. Upon becoming sufficiently organized, the system will be upgraded to a Tropical Depression (TD) and receive a different number. When a TD's maximum sustained winds reach 35kts, it is reclassified as a Tropical Storm (TS) and given a name. At 65kts the storm is considered to be at hurricane strength, although the term hurricane is just one of several terms used for this intensity. The following table summarizes these classifications as well as the basin specific terms. It is important to remember that all the wind speeds I list will be the average over one minute, as apposed to ten minute averages that some other agencies use.
Intensity (kts) | INVEST | < 35 | 35-60 | 65-80 | 85-95 | 100-110 | 115-125 | 130-130 | > 135 | ||
Natl | 9*L | Tropical Depression (01L and up) |
Tropical Storm: named by NHC | Hurricane-1 | Hurricane-2 | Hurricane-3 | Hurricane-4 | Hurricane-5 | |||
Major Hurricane | |||||||||||
NEPac | 9*E | Tropical Depression (01E and up) |
Tropical Storm: named by NHC | Hurricane-1 | Hurricane-2 | Hurricane-3 | Hurricane-4 | Hurricane-5 | |||
Major Hurricane | |||||||||||
NWPac | 9*W | Tropical Depression (01W and up) |
Tropical
Storm: named by JMA (Japan Metrological Agency) |
Typhoon-1 | Typhoon-2 | Typhoon-3 | Typhoon-4 | Typhoon-5 | |||
Super Typhoon | |||||||||||
Nind | 9*A(or)B | Tropical Depression 01A/B and up |
Tropical
Storm: named by IMD (India Meteorological Department) |
Cyclone-1 | Cyclone-2 | Cyclone-3 | Cyclone-4 | Cyclone-5 | |||
Sind | 9*S | Tropical Depression (01S and up) |
Tropical
Storm: named by France or Australia |
Cyclone-1 | Cyclone-2 | Cyclone-3 | Cyclone-4 | Cyclone-5 | |||
SPac | 9*P | Tropical Depression (01P and up) |
Tropical
Storm: named by Australia, New Zealand, or Fiji |
Cyclone-1 | Cyclone-2 | Cyclone-3 | Cyclone-4 | Cyclone-5 | |||
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