Question 1

What is a tropical cyclone?

Accepted Answer

A tropical cyclone is a rotating storm system characterized by a low-pressure center, strong winds, and heavy rain. They are called hurricanes in the Atlantic, typhoons in the Northwest Pacific, and cyclones in the South Pacific and Indian Ocean.

Question 2

How are tropical cyclones tracked?

Accepted Answer

Tropical cyclones are tracked using satellite imagery, weather radar, reconnaissance aircraft, and buoy data. Data is compiled by agencies like NHC/NOAA, JMA, and JTWC.

Question 3

What is the Saffir-Simpson scale?

Accepted Answer

The Saffir-Simpson Hurricane Wind Scale classifies storms from Category 1 (74-95 mph) to Category 5 (157+ mph) based on sustained wind speed. Categories 3+ are considered major hurricanes.

Question 4

When is typhoon season?

Accepted Answer

Typhoon season in the Northwest Pacific runs year-round but peaks from July to November. The Atlantic hurricane season runs from June 1 to November 30.

Question 5

How are tropical cyclones named?

Accepted Answer

Tropical cyclones are named from predetermined lists maintained by the World Meteorological Organization. Names are assigned when a storm reaches tropical storm strength (34+ knots).

世界の熱帯低気圧モニター

熱帯低気圧