Category Archives: Meteorology

Does it rain only on Earth?

It does precipitate on other planets and moons in our solar system.

On Earth, when particles fall from clouds and reach the surface as precipitation, they do so primarily as rain, snow, freezing rain or sleet. Continue reading

Category: Meteorology, Phenomena

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What is a red flag warning?

The National Weather Service issues, and cancels, fire weather watches (FWW), and red flag warnings (RFW) in coordination with the Wisconsin Department of Natural Resources and the U.S. Forest Service.

The weather service will not issue official warnings until certain threshold values, called red flag criteria, are forecast to occur. Red flag criteria differ from state to state. They usually include relative humidity values of 20% or less, winds of 20 mph or higher, and dry fuel conditions. Red Flag Warnings are usually only issued during the spring and fall fire weather seasons. Continue reading

Category: Meteorology, Severe Weather, Weather Dangers

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How is tornado intensity determined?

A deadly tornado outbreak took place Wednesday through Friday in the southern United States.

Tornadoes are classified based on the damage the tornado does, which enables us to estimate the wind speed of its rotating winds.
All tornadoes are assigned a single number from the Enhanced Fujita scale, abbreviated EF, according to the most intense damage caused by the storm. Continue reading

Category: Meteorology, Severe Weather, Weather Dangers

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New book from Jonathan Martin of The Weather Guys delves into the origins of modern meteorology

The technology that allows us to know the temperature, humidity and chance of precipitation on an hourly basis is something on which we’ve come to expect and rely. But ever wonder how the technology of predicting the weather came about?

UW-Madison professor Jonathan Martin, one of the writers of the State Journal’s “Ask the Weather Guys” column, answers that question in his new book “Reginald Sutcliffe and the Invention of Modern Weather Systems Science,” which came out March 15. He’ll be discussing the book during a virtual event through Mystery to Me bookstore later this month. Continue reading

Category: History, Meteorology

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What should I know about the spring equinox?

The spring equinox — also called the vernal equinox — marks the beginning of the spring season in the Northern Hemisphere and the autumn season in the Southern Hemisphere.

This year the equinox arrived at 4:37 a.m. Saturday. Continue reading

Category: Meteorology, Seasons

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