Automatic translation

Current cyclones and Watching


EnglishFrench

Translations are automated.

Saffir-Simpson scale

The scale

Cyclone classWinds in km / hWinds in kts
Tropical Depression0 - 620 - 33
Tropical storm63 - 11834 - 63
Hurricane Cat. 1119 - 15364 - 82
Hurricane Cat. 2154 - 17783 - 95
Hurricane Major Cat. 3178 - 20896 - 112
Hurricane Major Cat. 4209 - 251113 - 136
Hurricane Major Cat. 5more 251more 136

History

Created in 1969 by 2 meteorologists (at the request of theWorld Meteorological Organization) including the former director of NHC, the Saffir-Simpson scale makes it possible to classify the power of hurricanes according to the speed of their winds.

This classification was initially intended to determine the damage that could be caused to the population and infrastructure.

It only applies to certain basins including the Atlantic basin (roughly it is applied west of 0 ° longitude to 180 ° longitude.

The wind strength for the Saffir-Simpson scale is taken over a period of 1 minute which smooths the gusts a lot. This explains the feeling that many people have of underestimation of the wind by the authorities.  

Examples

Tropical Depression

Tropical Depression
Depression

Tropical storm

Tropical storm
chris

Hurricane Category 1

Hurricane Category 1
Dorian

Hurricane Category 2

Hurricane Category 2
Carlotta

Hurricane Category 3

Hurricane Category 3
Dorian

Hurricane Category 4

Hurricane Category 4
Florence

Hurricane Category 5

Category 5 hurricane
Irma

Controversy on the Saffir-Simpson scale

The 2005 season was a pivotal moment in the history of cyclones in the Atlantic. This year, both the number and the violence of the systems (Katrina on New Orleans for example) asked the question of reviewing the classification system by including, among other things, rainfalls or size. Many controversies then took place in the American scientific community on this subject, in particular on the advisability of a 6 category.

Nevertheless, the creators of the Saffir-Simpson scale felt that there was no reason to change it and that it met prevention needs very well. They relied on the idea that in any case, above 250 km / h (136 kt), a weather system was totally devastating and deadly and adding a Category 6 might make a Category 5 system appear less dangerous.

During the 2017 season, with the infamous Irma et Maria on the West Indies, the controversy has resurfaced. But as of this writing at the start of the 2020 season, no changes are planned.

Namely

There are often misunderstandings of the terms Cyclone et Hurricane.

A Tropical Cyclone indicates a tropical weather system with closed wind circulation around a low pressure center. All classes of weather systems included in the Saffir-Simpson scale are cyclones, even tropical depressions or storms.

A Hurricane is a cyclone with a wind speed greater than 118 km / h (63 kt). In hurricanes, there is also the so-called Major class for those whose wind speed exceeds 177 km / h (95 kt)

EnglishFrench

Translations are automated.

Current cyclones and Watching


Last article

Latest tweets

🌀 This November 27 at 18 p.m. (loc) the Watching is as follows:
#Guadeloupe: GREEN
#Martinique: GREEN
Northern Islands: GREEN

There is no hurricane system on the Atlantic.

https://www.meteo-tropicale.fr

Warning !
Watching in #Martinique has increased to the YELLOW level for heavy rains and thunderstorms.

See details on: https://meteofrance.mq/fr/Watching

ATTE

Disclaimer

NTION

This site has been developed for entertainment and understanding the weather in the tropics.

It should only be used NEVER for the safety of people or property.

Only information from your national meteorological service and your civil security should be used in case of proven risk!

Login

[user_registration_my_account]