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What is a fire cloud?
With the raging fires in Australia, you may have heard news reports of pyrocumulus, or fire clouds.
In Latin, pyro means “fire” and cumulus means “pile up.” Cumulus is a type of cloud that is common in Wisconsin, particularly in summer. Cumulus clouds are those puffy white clouds with tops that have a cauliflower appearance. Continue reading
Category: Meteorology, Phenomena, Severe Weather, Weather Dangers
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Was December’s unusual warmth widespread?
Despite the slight touch of winter on its last morning, December 2019 was an unusually warm month both locally and hemispherically.
Here in Madison, the month averaged 7 degrees above normal, with the highest temperature of the month, 55, occurring on Christmas Day, just one degree shy of the all-time daily record. Continue reading
Why don’t the latest sunrise and earliest sunset match up with the winter solstice?
The winter solstice has the shortest daylight hours of the year and will occur at 10:19 p.m. CST on December 21, 2019.
On that day we have our shortest day and longest night of the year in terms of daylight. It’s the astronomical moment when the sun reaches the Tropic of Capricorn. Continue reading
Category: Meteorology, Seasons
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How did fall temperatures locally compare with the northern hemisphere?
As we have reported several times over the years, the evidence is clear that over the entire Northern Hemisphere winter temperatures have been systematically warming over the past 70 years.
We base that conclusion on measuring the extent of air with a temperature of 23 or colder at the 850 millibar level, which is located about 1 mile above sea level. Such a measure can equally be made in the autumn months. Continue reading
What is the most snow Madison has received in one day?
What a storm!
Tuesday is the 29th anniversary of the greatest 24-hour snowfall ever in Madison.
Like most storms, this one had humble origins, but, by a conspiracy of meteorological circumstances, quickly grew into a historic monster. Continue reading
Category: Meteorology, Severe Weather
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