Category Archives: Phenomena

How does weather affect fall colors?

Astronomical fall began on Sept. 22.

Climatologists consider fall as the months of September, October and November. The fall season is also associated with pumpkin patches, fresh apples and beautiful foliage. Continue reading

Category: Phenomena, Seasons

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Does the ozone hole occur over both poles?

The ozone hole refers to the appearance of very low values of ozone in the stratosphere.

The winter atmosphere above Antarctica is very cold. It occurs typically high over the continent of Antarctica, during the Southern Hemisphere’s spring. The cold temperatures result in a temperature gradient between the South Pole and the Southern Hemisphere middle latitudes, which results in strong westerly stratospheric winds that encircle the South Pole region. Continue reading

Category: Meteorology, Phenomena, Seasons

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What is mud rain?

Mud rain is rain that contains a noticeable concentration of particles of sand or dust. The soil can be of local origin or it can originate from very distant regions. As rain falls through the dust layer, the raindrops collect … Continue reading

Category: Meteorology, Phenomena

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What is the longest lightning bolt?

The World Meteorological Organization, or WMO, investigates and certifies meteorological records.

On Friday, a WMO committee of experts confirmed a new world record for the longest single lightning flash. The single flash occurred on Oct. 31, 2018 and covered a horizontal distance of 440.6 miles, plus or minus 5 miles, across parts of southern Brazil. Continue reading

Category: Meteorology, Phenomena, Severe Weather

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What was that stuff that fell on Thursday?

On Thursday, many locations in southern Wisconsin experience snow squalls in which the falling precipitation was momentarily quite intense.

This event was an example of shallow convection – as opposed to the deep convection of summertime thunderstorms. Thursday’s shallow convection was spawned by a conspiracy of circumstances occurring at different levels in the atmosphere. Continue reading

Category: Meteorology, Phenomena

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