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Category Archives: Severe Weather
What is the National Climate Assessment?
The U.S. National Climate Assessment is mandated by the Global Change Research Act of 1990. The assessment is conducted about every four years and is an authoritative scientific analysis of climate change risks, impacts and responses in the U.S.
The nation this month completed the Fifth National Climate Assessment, or NCA5. The National Oceanic and Atmospheric Administration is the administrative agency for NCA5 and certifies that the report meets Information Quality Act and Evidence Act standards. The assessment is an extensive process that includes internal and external review from federal agencies, the general public and external peer review by a panel of experts. Continue reading
Category: Climate, History, Seasons, Severe Weather
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What is a gale wind?
A gale is a strong, sustained wind impacting maritime weather.
Do hurricanes affect Wisconsin?
A tropical cyclone is a rotating low-pressure system that has organized thunderstorms but no fronts. When a tropical cyclone’s maximum sustained winds reach 74 mph, it is called a hurricane. Hurricanes have never directly impacted the Upper Midwest region of the U.S.; however, the remnants of a hurricane or tropical storm have impacted the weather in the Midwest, including Wisconsin.
If a hurricane is particularly strong at landfall, it can move far enough northward to cause a significant rain event for areas in the Midwest. For the most part, such storms originally make landfall in Texas, Louisiana or Mississippi. These storms can be tracked by satellites or surface weather observations because they maintain an identifiable circulation pattern along their entire path. Continue reading
Category: History, Meteorology, Severe Weather, Tropical
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How is a heat index determined?
The heat index (HI) indicates how hot it feels.
The HI is calculated using an equation that is a function of air temperature and the relative humidity. The HI is sometimes referred to as the “feels-like” temperature. Continue reading
Category: Meteorology, Severe Weather, Weather Dangers
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Do birds get struck by lightning?
Yes, birds do get struck by lightning, although it’s not very common. When birds are flying during a storm, they are exposed to lightning strikes and thus can get hit directly. Birds will typically avoid flying in a thunderstorm. They … Continue reading
