What is the Polar Vortex? - National Weather Service
The polar vortex is a large area of low pressure and cold air surrounding both of the Earth’s poles. It ALWAYS exists near the poles, but weakens in summer and strengthens in winter. The term "vortex" refers to the counter-clockwise flow of air that helps keep the colder air near the Poles.
Learn About the Polar Vortex - National Weather Service
The polar vortex is a large area of low pressure and cold air surrounding both of the Earth’s poles. It ALWAYS exists near the poles, but weakens in summer and strengthens in winter. The term "vortex" refers to the counter-clockwise flow of air that helps keep the colder air near the Poles.
NATIONAL WEATHER SERVICE - LOUISVILLE weather.gov/louisville Official Outlook Rationale A weak, short La Niña event is favored to emerge (60% chance) this fall and expected to …
Oscillation), polar vortex (PV) strength, northern hemisphere snow cover could play a vital role in intraseasonal variability leading to an anomalous weather event such as a major cold snap or ice storm this upcoming cool season! • Wildfire season could come into better focus this Winter as drought/dryness trends continue
January 14-17, 2024: Multiday Stretch of Bitterly Cold …
A lobe of the polar vortex was dislodged and surged into North America, bringing bitterly cold temperatures to a large portion of the U.S. for several days during the middle of the month of January. The coldest temperature observed at O'Hare Airport during this stretch of cold weather was -10°F on both January 14th and 15th.
December 22-23, 2022: Powerful Arctic Front Brings Snow, Strong …
Dec 23, 2022 · A disruption of the polar vortex allowed for cold Arctic air to surge into the United States the week before Christmas. This helped spur the development of a "bomb cyclone" (a low pressure system whose atmospheric pressure falls at least 24 millibars in the span of 24 hours or less) that rapidly deepened over the Great Lakes and into Canada ...
Arctic Outbreak to Invade the Texas and Oklahoma Panhandles
A polar front is forecast to push across the Texas and Oklahoma Panhandles Tuesday evening. The upper ridge will continue to amplify sending a warmer than average air mass north into the polar regions.
January 30-31, 2019: Record to Near-Record Cold in Northern Illinois
Science behind the polar vortex. One of the primary satellite channels we use detects clouds by measuring the temperature being emitted from Earth. Clouds generally emit temperatures colder than at the surface because the air temperature typically …
a strong polar vortex and reduced likelihood of a sudden stratospheric warming (SSW) are slightly favored this winter. IRI/CPC Probabilistic ENSO Forecast/Plumes News from Climate.gov Latest ENSO Blog from Climate.gov Sea Surface Temperatures from the Climate Prediction Center Latest ENSO Discussion from the Climate Prediction Center
But scientists most often use “polar vortex” to refer to the climatological westerly wintertime winds in the stratosphere. The polar vortex is a regular feature of the atmosphere.