SWC Forecast Center - β Winter Weather Center
- β Severe Weather Center
- π Tropical Weather Center
- π₯ Wildfire Weather Center
- π§ Rainfall Weather Center
- π‘ Temperature Weather Center
SWC Map Center - π Storm Reports
- β οΈ Weather Advisories
- β Severe Weather Maps
SWC Information Center - π SWC Forecast Team
- πͺ SWC Expeditions
- π SWC Mission
βWinter Weather CenterβSWC Forecast CenterWelcome to SWC Forecast Center

Image: ECMWF/Tropical Tidbits
December 17, 2020
π₯Ά The first significant Arctic Blast of the season is coming next week... Just in time for the Christmas holiday...
Most of the central and eastern United States has been void of any meaningful Arctic air so far this season. That is about to change by the middle and end of next week. While glancing blows of bitter air have draped the northern Lakes and upper New England, most systems have featured polar air and marginal cold. Most areas will moderate, again, this weekend into the middle of next week, before the big change arrives.
A fairly benign weather feature will zip through the middle and eastern areas of the United States this weekend. In its wake, return flow and moderation will occur. A quick surge in temperatures are likely, as a potent low develops in the Leeside/Four Corners region by the middle of the week. Affectionatley known as a "Panhandle Hooker", that storm will rapidly intensify and race for the western Lakes. Out in front, warmth, rain, and severe weather can be expected; However, behind the storm, a blast of Arctic air will commence.

Image: Canadian/Pivotal Weather
December 17, 2020
The biggest question for next week is as follows: "Will I have a White Christmas?". For the mountains, Upper Plains, northern Lakes, Upper Midwest, and northern New England, yes. That is pretty common. For the central Plains, southern Lakes, lower Midwest, the Ohio Valley, and parts of the lower Mid-Atlantic, to perhaps northern Tennessee Valley, a lot will depend on the storm that emerges on Christmas Eve and Day. It is way too early for specifics, but with cold air pouring in, and the potential of a secondary wave forming, the chance is there. Stay tuned because this will likely become a "high impact" storm.
π₯Ά Forecast provided by: Joshua Ketchen
π₯Ά Forecast provided by: Joshua Ketchen
- π‘ Winter Snowfall Forecast
Show and hide layers π‘ 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.
- Latest SWC Forecasts
- βοΈ Winter’s Last Stand for the Ohio Valley with Heavy Snow possible Friday night
- β οΈβοΈ Winter Storm Update Plus Expected Snow & Ice Totals across the Ohio Valley Region
- βπ§βοΈ Powerhouse Winter Storm to slam the Ohio Valley with Ice and Heavy Snow starting on Wednesday night through Friday
- βπ§ Potentially Dangerous Winter Storm to bring significant winter impacts to the Ohio Valley, Midwest, and Southern Plains this week!
- β See how much snow will fall across the eastern third of the Ohio Valley Sunday night/Monday morning
- β A Massive Winter Storm is expected to produce widespread accumulating SNOW across multiple regions this weekend
- β Winter to visit the Ohio Valley and Lower Great Lakes this week with Accumulating Snow and Cold
- π₯Ά Major Cold Outbreak Likely next week with “First Flakes” possible in the Midwest, Ohio Valley, and Northeast!
Latest SWC Featuresβ Catch up on the most recent weather forecasts from SWC Forecasters!
β Track severe weather hazards day or night with our interactive maps!
β Visit our social media outlets for more fresh weather content!
β Sign-Up for a storm chasing vacation with our veteran Storm Chasers and friendly Tour Guides!
-
Do you have a fun weather fact or personal weather story that you would like to share with SWC Forecasters? We would love to hear about it! Send us your story at forecasters@swcforecastcenter.com.
-
Do you have a fun weather fact or personal weather story that you would like to share with SWC Forecasters? We would love to hear about it! Send us your story at forecasters@swcforecastcenter.com.
-
Do you have a fun weather fact or personal weather story that you would like to share with SWC Forecasters? We would love to hear about it! Send us your story at forecasters@swcforecastcenter.com.
-
-
Do you have a fun weather fact or personal weather story that you would like to share with SWC Forecasters? We would love to hear about it! Send us your story at forecasters@swcforecastcenter.com.
-
Do you have a fun weather fact or personal weather story that you would like to share with SWC Forecasters? We would love to hear about it! Send us your story at forecasters@swcforecastcenter.com.
-
Do you have a fun weather fact or personal weather story that you would like to share with SWC Forecasters? We would love to hear about it! Send us your story at forecasters@swcforecastcenter.com.
-
- β οΈ U.S Advisory Layers
SWC Weather Advisory Layers β οΈ 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.
-
π NOAA/NWS Surface Weather Maps display forecasted cold/warm front postions, precipitation areas, and high/low pressure centers. Forecasts span over 48 to 60 hours.
-
π NOAA/NWS Surface Weather Maps display forecasted cold/warm front postions, precipitation areas, and high/low pressure centers. Forecasts span over 48 to 60 hours.
-
π NOAA/NWS Surface Weather Maps display forecasted cold/warm front postions, precipitation areas, and high/low pressure centers. Forecasts span over 48 to 60 hours.
-
-
π NOAA/NWS Surface Weather Maps display forecasted cold/warm front postions, precipitation areas, and high/low pressure centers. Forecasts span over 48 to 60 hours.
-
π NOAA/NWS Surface Weather Maps display forecasted cold/warm front postions, precipitation areas, and high/low pressure centers. Forecasts span over 48 to 60 hours.
-
π NOAA/NWS Surface Weather Maps display forecasted cold/warm front postions, precipitation areas, and high/low pressure centers. Forecasts span over 48 to 60 hours.
-
- π§ 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!π¦ Pack an Emergency Supply Kit.
π± Charge all Communication devices.
π Winterize all family vehicles.
π Get up-to-date weather reports.
π Share your travel plans with others.
π£ Monitor road conditions.
- Latest SWC Forecasts
- βοΈ Winter’s Last Stand for the Ohio Valley with Heavy Snow possible Friday night
- β οΈβοΈ Winter Storm Update Plus Expected Snow & Ice Totals across the Ohio Valley Region
- βπ§βοΈ Powerhouse Winter Storm to slam the Ohio Valley with Ice and Heavy Snow starting on Wednesday night through Friday
- βπ§ Potentially Dangerous Winter Storm to bring significant winter impacts to the Ohio Valley, Midwest, and Southern Plains this week!
- β See how much snow will fall across the eastern third of the Ohio Valley Sunday night/Monday morning
- β A Massive Winter Storm is expected to produce widespread accumulating SNOW across multiple regions this weekend
- β Winter to visit the Ohio Valley and Lower Great Lakes this week with Accumulating Snow and Cold
- π₯Ά Major Cold Outbreak Likely next week with “First Flakes” possible in the Midwest, Ohio Valley, and Northeast!
Latest SWC Featuresβ Catch up on the most recent weather forecasts from SWC Forecasters!
β Track severe weather hazards day or night with our interactive maps!
β Visit our social media outlets for more fresh weather content!
β Join SWC Veteran Storm Chasers in Spring 2021 as we track down the most intense Supercells and Tornadoes found in the world!
- π‘ View the latest Goes-16 Visible Satellite image of the United States. This image will update every 5 minutes.
- π₯ 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.
- βAmerica's Weather ExpertsSWC FORECAST CENTERWEATHER FORECASTINGWEATHER MODEL DATA© Severe Weather Country LLC
πΊπΈ 2016 - 2021