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Was the February 23 snowstorm in the Northeast really unusual?
The northeast United States experienced a once-in-a-generation storm on Feb. 23-24. It would take too much space to list all the remarkable snowfall records that were set during this event, though mentioning a couple is both irresistible and instructive.
Southeast Massachusetts and most of Rhode Island were hardest hit by both the snow and winds associated with this event. T.F. Green International Airport at Providence, Rhode Island, ended up with 37.9 inches of snow — its all-time two-day and single-day records — and suspended all operations on Feb. 23. Hurricane-force wind gusts were widespread in the region, with Wellfleet, Massachusetts recording a peak gust of 98 mph. Continue reading
Category: Meteorology, Seasons, Severe Weather
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What is a mesonet and what are they used for?
The term “mesonet” is a blending of the words “mesoscale” and “network.”
In meteorology, “mesoscale” refers to weather events that range in size from about one mile to about 150 miles. Mesoscale events last from several minutes to several hours. Thunderstorms, snow squalls and wind gusts are examples of mesoscale events. A mesonet refers to a network of collectively owned and operated automated weather stations that are installed close enough to each other and report data frequently enough to observe mesoscale meteorological phenomena. Continue reading
What did the Endangerment Finding suggest about global warming?
On Feb. 12 President Donald Trump’s Environmental Protection Agency revoked the so-called “endangerment finding,” issued in 2009, asserting that “CO2 and other greenhouse gases endanger public health and welfare.” This scientific finding served as the basis for limits on tailpipe emissions and power plant rules enacted under President Barack Obama and committed the United States to a national effort to arrest the kind of pollution that contributes directly to global warming.
Based on an extensive body of scientific evidence, in the EPA in 2009 singled out six greenhouse gases for the danger they pose to public health and welfare. Continue reading
Category: Climate, History, Weather Dangers
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Why don’t trees freeze and burst in the winter like cold pipes?
When liquid water freezes, it expands as the water molecules spread out to form a solid crystalline lattice. If the freezing water is contained in a closed vessel, such as a metal pipe, it can press hard on the sides as it expands, causing the container to burst.
Trees contain water that is transported throughout the tree by the phloem and xylem, which we can think of as pipes.
Continue reading
Will the recent the groundhog predictions come true?
Punxsutawney Phil saw his shadow, which means there will be six more weeks of winter. On the other hand, Jimmy the Groundhog in downtown Sun Prairie did not see his shadow at sunrise during the 78th annual Groundhog Day Prognostication, which per tradition means we are due for an early spring. Which to believe?
We don’t put stock in either. Continue reading
