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1.

Extreme Weather

Events that have extreme values of important meteorological variables. Extreme is generally defined as either taking maximum values or exceedance above pre-existing high thresholds. Such events are generally rare; for example, extreme wind speeds exceeding the 100-year return value, which have a probability of only 0.01 of occurring in any particular year. (Stephenson, 2008)

Year introduced: 2020

2.

Extreme Cold

Below normal weather temperatures that may lead to serious health problems. Extreme cold is a dangerous situation that can bring on health emergencies in susceptible people.

Year introduced: 2009

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