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Monthly Archives: March 2020
Why does the severe weather threat increase as spring and summer approach?
As the threat of winter snows recedes across the country, it is replaced by the threat of severe weather — thunderstorms with hail, damaging winds and tornadoes.
The severe weather season, though broadly spanning March through August across the United States, is actually quite regional. It begins in March in the southern states, moves to the southern Plains during April and May, and then farther north toward the Great Lakes states during the summer. Continue reading
Category: Meteorology, Seasons, Severe Weather
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Did spring come early this year?
Astronomically, spring occurs when the sun’s rays strike the equator at noon at an angle that is directly overhead.
This particular time varies from year to year due to variations in Earth’s orbit about the sun. In the Northern Hemisphere, the vernal, or spring, equinox (“equi” meaning “equal,” and “nox,” “night”) occurs sometime between March 19 and 23, but often on March 20 or 21. Continue reading
Will spring temperatures affect the COVID-19 outbreak?
The COVID-19 outbreak continues to expand across the U.S. and globally. What happens when spring and warmer weather arrives?
Some viral respiratory diseases, such as influenza, are seasonal, and cases decrease in the spring and summer. However, we do not know what to expect from the new coronavirus that causes COVID-19. Continue reading
Category: Meteorology, Phenomena, Weather Dangers
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How severe was our just-completed meteorological winter?
Employing data from the last 72 winter seasons — December, January and February — we have been examining the size of the area one mile above sea level over the Northern Hemisphere that was colder than 23 degrees.
After recording the warmest December ever, since the cold area was the smallest found using this methodology, this year’s winter season ended up as the fifth-warmest of the last 72 — fairly impressive. In fact, perhaps not surprisingly, 14 of the 20 warmest winters by this measure have occurred since 2001-02, with the warmest being 2014-15. Continue reading
Wisconsin ‘Weather Guy’ and longtime prof to lead UW-Madison research enterprise
Category: Uncategorized
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