Image: SWC Forecast Center
December 11, 2020
❄ A quick moving storm will deliver rain, then snow and ice, to the Midwest and western Great Lakes late Friday into early Sunday...
Low pressure organizing over the western Plains this morning will trek northeastward into the Midwest and southern Lakes by Saturday evening. Warm air initially will allow precipitation to start as rain, but as a cold front presses southward the precipitation will mix with ice and then change to snow. Winter Weather Advisories, Winter Storm Watches and Warnings, have been issued.

Winter Weather Advisories extend from south-central Nebraska, through the heart of Iowa, and southern Wisconsin. Accumulations will vary anywhere from 2 to 6 inches. As the low deepens, winds will become a factor, generally rang from 15 to 25 mph, with wind gusts potentially to 40 mph.

Image: SWC Forecast Center
December 11, 2020
Moving into Michigan, Winter Storm Watches and Warnings are out. Models indicate that as the low moves eastward, enhanced moisture will stream in from the Gulf of Mexico leading to higher snowfall totals. In the Warning area, snowfall could reach 4 to 10 inches with locally higher amounts. At transition, light ice accumulations are possible. The same amounts are anticipated in the Watch area (Blue), and we expect this to be upgraded to Warning status later on Friday.

🌨 Forecast Provided By: Meteorologist Joshua Ketchen

  • 🌡 Winter Temperature Forecast
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    🌡 The 2020/21 SWC Winter Temperature Forecast highlights below normal temperatures in the northern and Eastern United States through late February. Above normal temperatures will exist in the west and southwest through Spring 2021 as La Nina continues to be a significant influence on the overall weather pattern.
  • 🌧 Winter Precipitation Forecast
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    🌧 SWC Forecasters analyze large-scale weather patterns such as El Nino/La Nina to pinpoint future precipitation anomalies across the United States. Other factors such as soil moisture and solar conditions are also considered when making a long-range precipitation forecast.
  • ❄ 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.
  • ⚠️ U.S Advisory Layers
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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.