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The polar vortex is a large area of cold air and low pressure that normally spins over the North and South Poles. During the winter months and when the jet stream allows, this cold air can drop ...
Is the polar vortex coming? Looking ahead, much colder air is predicted to arrive in waves across the central, eastern and southern U.S. over the first week to 10 days of January.
The polar vortex is a whirling cone of low pressure over the poles that's strongest in the winter months due to the increased temperature contrast between the polar regions and the mid-latitudes ...
Avare is a free open source "moving map" aviation GPS, A/FD and EFB app for phones or tablets using the Android Operating System.The app uses any internal Android or compatible external GPS receiver to determine location, allowing real-time display of location, heading, speed, distance, time, and altitude on free U.S. FAA IFR or VFR aviation charts; or on select topographic charts.
Name of application Maps source Operating platform Software license Cost Maps can be preloaded (and stored) 3D navigation mode Voice-guidance Live traffic
A quasi-permanent phenomenon referred to as the polar vortex may have been partly responsible for the cold weather. Temperatures in much of the United States dropped 15 to 35 °F (8.3 to 19 °C) below average by November 19, following a southward "dip" of the polar vortex into the eastern two-thirds of the country.
When the polar vortex is strong, the polar jet stream locks bitterly cold, dry air in place over the Arctic. When strong, these winds essentially act as an unscalable wall that frigid air cannot ...
From February 13 to 14, a second, much larger trough developed over Central United States, aided by a southward shift from the polar vortex, while the winter storm moved into Texas. The trough became fully developed by February 15, channeling significant amounts of moisture into the winter storm and also contributing to a historic cold wave ...