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❄Winter Weather Center❄SWC Forecast CenterWelcome to SWC Forecast Center

Image: SWC Forecast Center
December 14, 2020
❄ A large scale synoptic Winter Storm is poised to hit the central Appalachians, Mid-Atlantic, and southern New England late Tuesday night through midday Thursday.....
A low pressure system will develop and deepen in the Gulf Coast region as it treks northeastward. This low will funnel in both, Gulf of Mexico, and Atlantic Ocean moisture as it tracks along the eastern seabord Wednesday into Thursday. As the moisture is lifted up and over the front, moderate, to at times heavy snow, will occur from the central Appalachians, interior Mid-Atlantic, and interior southern New England. This has prompted the issuances of several Winter Storm Watches throughout this part of the United States.
Snowfall accumulations range from as little as three to four inches in lower elevations and valleys, to as high as a foot in the taller reaches of the Appalachians. A corridor of snow reaching 18 inches is possible in parts of the mountains. Further east along the Mid-Atlantic, interior cities could recieve four to locally eight inches. This range also applies to interior locations in southern New England. Along the immediate coast, rain should be the main mode of precipitation. However, as the low moves northward towards New Brunswick and Nova Scotia, colder air can infiltrate in to create small accumulations for cities like Newark, New York, and Providence.

Image: ECMWF/Pivotal Weather
December 14, 2020
Latest model runs have trended slightly west accounting for warm air to slide up, along, and just inland. This results in the classic snow areas west of the Interstate 95 corridor, with rain along the coast. Some adjustments are likely, but strong model agreement yields confidence to use the above information as a good guideline for this storm. Keep tabs on the latest as this significant storm affects Appalachia, the interior Mid-Atlantic, and interior southern New England.
🌨 Forecast provided by: Meteorologist Joshua Ketchen
🌨 Forecast provided by: Meteorologist Joshua Ketchen
- 🌡 Winter Snowfall Forecast
Show and hide layers 🌡 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
- ❄️ Winter’s Last Stand for the Ohio Valley with Heavy Snow possible Friday night
- ⚠️❄️ Winter Storm Update Plus Expected Snow & Ice Totals across the Ohio Valley Region
- ❄🧊☃️ Powerhouse Winter Storm to slam the Ohio Valley with Ice and Heavy Snow starting on Wednesday night through Friday
- ❄🧊 Potentially Dangerous Winter Storm to bring significant winter impacts to the Ohio Valley, Midwest, and Southern Plains this week!
- ❄ See how much snow will fall across the eastern third of the Ohio Valley Sunday night/Monday morning
- ❄ A Massive Winter Storm is expected to produce widespread accumulating SNOW across multiple regions this weekend
- ❄ Winter to visit the Ohio Valley and Lower Great Lakes this week with Accumulating Snow and Cold
- 🥶 Major Cold Outbreak Likely next week with “First Flakes” possible in the Midwest, Ohio Valley, and Northeast!
Latest SWC Features✅ Catch up on the most recent weather forecasts from SWC Forecasters!
✅ Track severe weather hazards day or night with our interactive maps!
✅ Visit our social media outlets for more fresh weather content!
✅ Sign-Up for a storm chasing vacation with our veteran Storm Chasers and friendly Tour Guides!
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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.
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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.
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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.
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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.
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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.
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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.
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- ⚠️ U.S Advisory Layers
SWC Weather Advisory Layers ⚠️ 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.
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🌐 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.
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🌐 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.
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🌐 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.
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🌐 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.
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🌐 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.
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🌐 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.
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- 🧊 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.
- Latest SWC Forecasts
- ❄️ Winter’s Last Stand for the Ohio Valley with Heavy Snow possible Friday night
- ⚠️❄️ Winter Storm Update Plus Expected Snow & Ice Totals across the Ohio Valley Region
- ❄🧊☃️ Powerhouse Winter Storm to slam the Ohio Valley with Ice and Heavy Snow starting on Wednesday night through Friday
- ❄🧊 Potentially Dangerous Winter Storm to bring significant winter impacts to the Ohio Valley, Midwest, and Southern Plains this week!
- ❄ See how much snow will fall across the eastern third of the Ohio Valley Sunday night/Monday morning
- ❄ A Massive Winter Storm is expected to produce widespread accumulating SNOW across multiple regions this weekend
- ❄ Winter to visit the Ohio Valley and Lower Great Lakes this week with Accumulating Snow and Cold
- 🥶 Major Cold Outbreak Likely next week with “First Flakes” possible in the Midwest, Ohio Valley, and Northeast!
Latest SWC Features✅ Catch up on the most recent weather forecasts from SWC Forecasters!
✅ Track severe weather hazards day or night with our interactive maps!
✅ Visit our social media outlets for more fresh weather content!
✅ Join SWC Veteran Storm Chasers in Spring 2021 as we track down the most intense Supercells and Tornadoes found in the world!
- 📡 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.
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