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What is a heat wave?
What is a heat wave based on the heat wave duration index?
What is a heat wave in the Netherlands?
What is a heat wave in Sweden?
What is a heat wave? A heat wave is a period of abnormally hot weather generally lasting more than two days. Heat waves can occur with or without high humidity. They have potential to cover a large area, exposing a high number of people to hazardous heat.
- Heat Watch Vs. Warning
A Watch is used when the risk of a heat wave has increased...
- What is the heat index?
The heat index, also known as the apparent temperature, is...
- Heat Watch Vs. Warning
- Dangerous Heat
- How Do Heat Waves form?
- Heat Wave Safety
For some, a heat wave might sound like an excuse to run around with a hose or into some sprinklers. In reality, though, heat waves are no laughing matter. They are serious weather phenomena that can be quite dangerous. You see, there’s hot and then there’s HOT. One example of a HOT time was in late June and early July 2012 in the United States. Dur...
Heat waves are generally the result of trapped air. During the 2012 heat wave, air was trapped above much of North America for a long period of time. As opposed to cycling around the globe, it simply stayed put and warmed like the air inside an oven. The culprit? A high-pressure system from Mexico. Between June 20th and June 23rd, this system migra...
Heat waves like this may be less exciting or dramatic than other natural disasters like tornados, hurricanes, flooding, or even thunderstorms, but heat waves kill more people in the United States than all other weather-related disasters combined. Check out the sidebar to learn more about what you can do to stay safe!
A definition based on the Heat Wave Duration Index is that a heat wave occurs when the daily maximum temperature of more than five consecutive days exceeds the average maximum temperature by 5 °C (9 °F ), the normal period being 1961–1990. [12] The same definition is used by the World Meteorological Organization.
Heat Wave. A period of abnormally and uncomfortably hot and unusually humid weather. Typically a heat wave lasts two or more days. You can either type in the word you are looking for in the box below or browse by letter.
Jul 26, 2023 · Heat waves begin with a high-pressure system (also known as an anticyclone ), where atmospheric pressure above an area builds up. That creates a sinking column of air that compresses,...
