Heat Index, Atmospheric Rivers, Bomb Cyclones and Derechos: 4 Weather Terms Explained
The word forecasts might sound strange to you. Many of them are used in the recent news. weather terms explained, Here are some explanations of their meanings that can help you understand warnings given by the weather service.
Weather Terms Explained
1. Heat index
The heat index shows how temperature combines with humidity and affects you.
2. Atmospheric river
It is a small fragment of the atmosphere that carries vapor from all over the world. A strong atmospheric river can release rainfall, cause floods and landslides.
3. Bomb Cyclone
It is a very strong storm with an evolving system of low pressure. According to scientists, the term has been in use for over 30 years. In contrast to the atmospheric river that is defined as a moisture transport, a bomb cyclone describes how it intensifies.
4. Derecho
Derecho is a complex of thunderstorms that causes non-rotating wind damage. The US National Weather Service requires a minimum wind speed of 58 miles per hour (93 kilometers per hour) over a distance of at least 240 miles (386 kilometers).
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