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Featured Weather News
Featured Weather News
Cold Temperatures Return in February
Cold is returning to much of the country in the beginning of February.
Story Highlights
The central and eastern U.S. states are seeing milder temperatures after a bitterly cold start to 2018.
A pattern change will likely bring a return of arctic air to parts of Rockies, Plains and Midwest for the beginning of February.
February could begin with a weather pattern change that triggers a re-emergence of arctic air over a large swath of the nation, erasing the mild interlude many are enjoying right now.
The recent warmer weather in the Midwest, South and East is the result of a reconfiguration of the jet stream into a broader west-to-east flow. Passing cold fronts do knock temperatures down, but not to the extreme levels we saw in late December and the first half of January.
In general, temperatures should remain near or above average for late-January in most areas east of the Rockies into at least part of next week.(MORE: Winter Storm Central)
Forecast Highs
During the final couple days of January and the start of February forecast guidance depicts another large-scale weather pattern shift.
First, the jet stream will bulge northward over the eastern Pacific Ocean into Alaska and western North America. Downstream, the jet stream is forecast to buckle southward across Canada and into the central United States.
This type of weather pattern is notorious for feeding a pipeline of arctic air into the Lower 48 states.
Kicking off this potential return to shivering temperatures is a cold front that is projected to move across the Midwest by the middle or latter portion of next week. Milder air will first engulf the eastern states ahead of the front. FOR MORE VISIT
What Is Weather
What Is Weather
Weather is the state of the atmosphere, describing for example the degree to which it is hot or cold, wet or dry, calm or stormy, clear or cloudy.[1] Most weather phenomena occur in the lowest level of the atmosphere, the troposphere,[2][3] just below the stratosphere. Weather refers to day-to-day temperature and precipitation activity, whereas climate is the term for the averaging of atmospheric conditions over longer periods of time.[4] When used without qualification, "weather" is generally understood to mean the weather of Earth.
Weather is driven by air pressure, temperature and moisture differences between one place and another. These differences can occur due to the sun's angle at any particular spot, which varies with latitude. The strong temperature contrast between polar and tropical air gives rise to the largest scale atmospheric circulations: the Hadley Cell, the Ferrel Cell, the Polar Cell, and the jet stream. Weather systems in the mid-latitudes, such as extratropical cyclones, are caused by instabilities of the jet stream flow. Because the Earth's axis is tilted relative to its orbital plane, sunlight is incident at different angles at different times of the year. On Earth's surface, temperatures usually range ±40 °C (−40 °F to 100 °F) annually. Over thousands of years, changes in Earth's orbit can affect the amount and distribution of solar energyreceived by the Earth, thus influencing long-term climate and global climate change.
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