Facts of the Matter: Polar vortex gains notoriety as icy weather sweeps nation
By Richard Brill, Special to the Star-Advertiser
Feb. 19, 2021
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MONITOR / ASSOCIATED PRESS
Understanding what the polar vortex is and how it moves helps clarify the current weather crisis in the South. A sprinkler system used to protect citrus trees from freezing damage covers them in icicles in Edinburg, Texas.