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Category Archives: Meteorology
What is El Niño and does it affect Wisconsin?
El Niño is a combined atmosphere/ocean circulation anomaly in the tropical Pacific Ocean in which unusually warm surface water extends westward from the coast of Peru into the mid-Pacific. One is predicted to develop this winter, which may impact our winter weather.
The warmer than normal waters support persistent tropical thunderstorms in that same region — where such storms are ordinarily rare. Continue reading
Category: Meteorology, Phenomena, Seasons
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Ask the Weather Guys: What causes cold air outbreaks?
Almost no one in the Midwest will be unaffected by the remarkable cold air outbreak that occurred over the past weekend. And if you think that we were paid a rather early visit by such air this year, you are … Continue reading
Category: Meteorology, Seasons
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Can we see satellites at night?
Yes, you can see satellites in particular orbits as they pass overhead at night.
Viewing is best away from city lights and in cloud-free skies. The satellite will look like a star steadily moving across the sky for a few minutes. If the lights are blinking, you probably are seeing a plane, not a satellite. Continue reading
Is the number of tornadoes increasing?
Tornadoes are sometimes not seen and thus sometimes not counted. Particularly early in the record keeping. But scientists interested in this question have studied the change in the key ingredients that form tornadoes, such as wind shear, atmospheric stability and … Continue reading
Why does it get colder in the fall and winter?
After a fairly prolonged stretch of warm and humid weather through mid-September, culminating in a temperature of 82 degrees just before midnight on Thursday, southern Wisconsin residents were greeted with low temperatures in the 40s on Saturday morning.
This seems particularly fitting as Saturday, Sept. 22, was the day of the autumnal equinox this year — fall officially arrived at 8:54 p.m. that night. Continue reading
