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Category Archives: Severe Weather
What is the prediction on the rise of sea level?
The National Oceanic and Atmospheric Administration, or NOAA, routinely monitors sea level and makes predictions of how it will change with time. The observations are based on a combination of tide gauge data and satellite observations.
Continuously tracking how and why sea level is changing is an important part of informing plans for adaptation to global changes. In a recent speech, former President Donald Trump falsely stated that “the ocean will rise 1/8 of an inch over the next 200 to 300 years.” Continue reading
Was our weather this week related to the record event in Buffalo, New York?
It has been a fairly wintry week across the Great Lakes states, including here in southern Wisconsin.
Through Saturday night, it had snowed on five straight days in Madison, a total of 4.4 inches. The same pool of cold air above the ground that led to Madison’s intermittent snow showers stretched all the way across the Great Lakes. In fact, the Saturday morning temperature at 1.5km above the surface at Buffalo, New York, was minus 14 Celsius (about 7 degrees Fahrenheit). Continue reading
Category: Meteorology, Severe Weather
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Another example of unprecedented weather extremes
Another entry in the category of unprecedented weather extremes comes from the tropical Atlantic basin where, last week, Hurricane Fiona wrought devastation to the Commonwealth of Puerto Rico, still reeling from its assault by Hurricane Maria eerily precisely five years earlier.
Fiona dropped upwards of 30 inches of rain on the south shores of Puerto Rico before heading north into the Atlantic, where it systematically strengthened into a Category 4 hurricane with sustained winds of more than 130 mph. Continue reading
Category: Meteorology, Phenomena, Severe Weather, Tropical
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What can happen to hurricanes when they move into the mid-latitudes?
Hurricanes are large-scale, organized storms that form in the tropical latitudes.
They are fueled by the enormous amount of heat released when water vapor, evaporated off the warm tropical ocean surface, changes phase to liquid and ice in the thunderstorm clouds of the hurricane.
They are smaller in areal extent than the storms that commonly affect us in the mid-latitudes here in Madison. Continue reading
Category: History, Meteorology, Severe Weather
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Does lightning add nitrogen to the soil?
Our bodies need nitrogen to make proteins. The atmosphere’s composition is 78% nitrogen, but the nitrogen in the air is not available to our bodies.
The two atoms in the airborne nitrogen molecule are held together very tightly. For our bodies to process that nitrogen, the two atoms must separate. Continue reading
Category: Meteorology, Phenomena, Severe Weather
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