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Category Archives: History
What impact did Sputnik have on weather monitoring and predictions?
Sixty-four years ago the Soviet Union launched Sputnik, the first artificial satellite. This was not welcome news in the United States as it confirmed that the Soviets were well ahead of us in the development of rocket technology. In fact, … Continue reading
How often does New England deal with hurricanes?
New England dealt with Tropical Storm Henri over the past weekend — nearly the first hurricane to make landfall in New England in 30 years.
As it turns out, that long interval between landfalling hurricanes in that region is unusually long. Continue reading
Category: History, Meteorology, Severe Weather, Tropical
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Why do we have a new normal in weather?
The National Ocean and Atmosphere Administration’s National Climatic Data Center (or NCDC) calculates the average weather conditions over a 30-year period for more than 7,500 locations in the United States.
A reliable estimate of an average requires at least 30 years. These 30-year averages are referred to as the U.S. Climate Normal. They provide a baseline that allows everyone to compare a location’s current weather to the average weather that location would expect to see — whether a particular day’s temperature is cooler or warmer than normal, or if a particular month is wetter than normal. Continue reading
Can space dust affect our atmosphere?
Space contains tons of dust. When dust particles approach Earth, they can be captured by gravity and enter the atmosphere at very high speeds.
Particles with diameters larger than about 2 millimeters undergo very rapid heating through collisions in our atmosphere. As they heat up, they can produce a short-lived trail of light known as “shooting star.” Most dust particles entering the atmosphere are estimated to be much smaller than this and don’t provide a visible trail. Continue reading
Are April showers likely to be snow?
After a benevolent first week of April, we have really been brought back to reality as temperatures in Madison have been increasingly chillier since the monthly high of 79 was recorded on April 6.
April 14 was particularly chilly, with the high only getting to 40 under persistent clouds. It could be worse, however. Last Friday it snowed over southern New England — with totals as high as 9 inches in southern New Hampshire and widely greater than 2 inches in the northern suburbs of Boston. Continue reading
