CFS/Tropical Tidbits
January 27, 2021
🥶 Bitter Cross Polar Flow and weak La Nina conditions could lead to a potentially cold and snowy February from the Midwest to the Mid-Atlantic region...
CFS weeklies, pictured above, coupled with weakening La Nina conditions in the equatorial Pacific, as well as negative phase Arctic and North Atlantic Oscillations, all show a strong signal for below normal temperatures throughout the month of February from the upper Midwest, across the Ohio Valley, and then eastward into the Mid-Atlantic. The pattern is likely to begin at the start of the second week of the month. Individual storms are too difficult to predict this far in advance, but the pattern does appear rather favorable for colder airmass intrusion than we experienced in January.

CFS/Tropical
January 27, 2021
When looking into the medium and long range for winter storm potential, it's important to find areas where above normal precipitation intersect or directly parallel areas of below normal temperatures. In the image above, we can see that above normal precipitation during the 3rd week of the month overlaps a fairly aggressive area of cold temperature departures. Where these areas meet is typically where you will find the most intense winter weather. Late in the first week of February, The European model(ECMWF) develops a cross-polar flow deep into the central United States, and this could also lead to an increase in winter storm potential.

❄ Forecast Provided By: Extreme Storm Chaser Rich Gross

  • 🌡 Winter Snowfall Forecast
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    🌡 The 2020/21 SWC Winter Snowfall Forecast illuminates a wintry picture over a large portion of America. A La Nina favored large-scale pattern with upper-level ridging in the west and troughing in the east was considered in developing this forecast. Other influences, from the Arctic to the North Atlantic, could play a major role on how storm systems progress across the country.
  • ❄ The SWC Winter Forecast has been released for the 2020-21 Season. Meteorological Winter starts on December 1, 2020 with the U.S. experiencing warmer than normal weather conditions. Our forecasters break down the details of how Winter will play out in your area.
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    ⚠️ Click on real-time watch, warning, and advisory polygons for critical weather information. Allow the SWC location feature to plot your location on the map. Expand the map and visit all SWC Weather Layers.
  • 🧊 As Winter Weather impacts become more frequent across America, it's important to brush up on the basics. Let's review how you can prepare yourself and your family for the worst of Old Man Winter!
    📦 Pack an Emergency Supply Kit.
    📱 Charge all Communication devices.
    🚗 Winterize all family vehicles.
    📖 Get up-to-date weather reports.
    🙌 Share your travel plans with others.
    🛣 Monitor road conditions.
  • 📡 View the latest Goes-16 Visible Satellite image of the United States. This image will update every 5 minutes.
  • 🔥 As La Nina continues to control the overall pattern across the Western U.S., dry conditions are prevailing across Arizona, Utah, and New Mexico. These conditions are forecasted to continue through Winter 2020/21.