Polar vortex maps show where arctic blast is set to freeze the U.S. as far as the Deep South
A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of the arctic blast.
These maps show how winter has flipped upside down in the U.S.
After a record-breaking Gulf Coast storm, cities like New Orleans and Pensacola, Florida, have had more snow this winter than Omaha, Des Moines and New York.
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Atmospheric Pressure
McKinley (63 deg North) in the United States and it ... affect atmospheric pressure. Pioneering scientists discovered atmospheric pressure (also known as barometric or air pressure) in the 17th ...
Weather Underground2mon
12 Hour Surface Forecast
The 12 hour Surface Analysis map shows current weather conditions, including frontal and high/low pressure positions ... analyses began first in the United States, spreading worldwide during ...