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Big Story Weather – December 20, 2013

December 20, 2013

redOrbit Meteorologist Joshua Kelly

Big Story Weather from December 19:

A powerful storm system developed over the Rockies and left a good swath of snowfall over the Dakotas along with very cold temps that were well below zero overnight.

Big Story Weather Discussion for December 20:

Surface Map 11AM: Low pressure pushing into the Great Lakes is going to be the focus of a wide array of weather today. Snow showers will extend from Maine through Southeast Canada and back into the Great Lakes, while rain/snow mix will be over parts of Iowa into Kansas. Rain showers will extend from Ohio back into Texas. There will even be a few thunderstorms from Southeast Oklahoma back into Dallas Texas. A secondary low pressure moving out of the Baja will be over the Southwest. This will bring showers to the region and higher elevation snows. A trailing cold front will push into the Pacific Northwest and this morning there could be some snow in Seattle.

Surface Map 11PM: Look for snow to extend from the Northeast through Southeast Canada and into the Great Lakes this evening. A rain/snow mix will be over Illinois and back into Oklahoma. Rain showers will extend from Ohio to Louisiana and Texas. There will be a pocket of thunderstorms over Louisiana and Texas as well. Showers will be over the Southwest along with higher elevation snows. The next cold front will clip into the Northern Rockies bringing with it snowfall to the region from Idaho to Utah and into Montana.

Severe Weather: This afternoon there is a limited potential of severe weather over Southeast Texas. This weekend there will be a very high threat over the Gulf Coast from Louisiana into Alabama. This area will see the potential for damaging winds, hail and isolated tornadoes, especially into Central Mississippi.

Winter Weather: There are winter storm watches/warnings in effect over Maine and into Northern New York. This area is looking at the potential for around 6 inches of snowfall. There are also winter storm watches/warnings in effect from Southern Michigan all the way back to Northern Texas. This area will see around 3-6 inches in the northern section to around 1-2 inches over Northern Texas. There is a third winter storm watch/warning area over the Pacific Northwest and into the Northern Rockies for snowfall of 6-9 inches. A freezing rain advisory is in effect from Lake Michigan southward into Oklahoma and Kansas. This area may see accumulating ice from the storm. A wind chill advisory is in effect for most of North Dakota as wind chill values are approaching -30F.

Flooding: The potential is there for a wide region from Ohio to Texas to see flooding rains over this weekend. Storm totals could easily hit near 5 inches of rainfall for many locations in this region.

Winds: There will be stronger winds along and just behind the frontal boundary. Winds could reach 30-45mph for locations along and behind the front today.

72hr Westward Storm Watch: Storm 1 is now pushing onshore over Western Canada. There will be rain and snow showers that will extend from Western Canada into the Pacific Northwest of the US today. Storm 2 is now pushing into the Aleutian Islands bringing heavy rain, snow and strong winds to Southern Alaska. Storm 3 is now along the East coast of Japan bringing rain and snow to the region.

Today’s Spotlight Cities Forecast:

Buffalo NY: Mostly cloudy with showers. High temps around 44F and overnight lows near 40F. Total rainfall near 0.25 inches. Saturday mostly cloudy with heavy rain. High temps near 37F and overnight lows near 34F. Total rainfall near 1.25 inches. This will create moderate impacts due to flooding. Sunday mostly cloudy with rain/snow mixing. High temps around 44F and overnight lows near 24F. Total rainfall near 0.25 inches and total snowfall around 3 inches. Monday cloudy with snow. High temps near 24F and overnight lows near 20F. Total snowfall near 2 inches. Tuesday mostly cloudy with light snow. High temps around 21F and overnight lows near 14F. Total snowfall near 2 inches.

Mobile AL: Mostly cloudy with late afternoon showers. High temps near 76F and overnight lows near 70F. Total rainfall near 0.20 inches. Saturday mostly cloudy with thunderstorms; some storms will be severe overnight. High temps near 77F and overnight lows near 70F. Total rainfall near 2 inches. This will create EXTREME impacts for the area. Sunday mostly cloudy with thunderstorms early. High temps around 74F and overnight lows near 55F. Total rainfall around 1.25 inches. Monday partly cloudy and colder. High temps near 55F and overnight lows near 32F. Tuesday partly cloudy with high temps near 52F and overnight lows near 36F.

Sioux Falls SD: Partly cloudy with a high near 11F and overnight lows near 2F. Saturday partly cloudy with a high near 15F and overnight lows near 6F. Sunday partly cloudy and cold with high temps near 10F and overnight lows near -10F. This will create wind chill values near -30F. Monday partly cloudy with high temps near 10F and overnight lows near -3F. Tuesday partly cloudy with high temps near 30F and overnight lows near 14F.

Billings MT: Partly cloudy with a high near 28F and overnight lows near 22F. Saturday mostly cloudy with snow. High temps near 25F and overnight lows near 10F. Total snowfall near 3 inches. Sunday partly cloudy with high temps around 24F and overnight lows near 9F. Monday partly cloudy with a high near 36F and overnight lows near 30F. Tuesday partly cloudy with a high near 33F and overnight lows near 19F.

Salt Lake City UT: Partly cloudy with high temps around 26F and overnight lows near 23F. Saturday mostly cloudy with snow. High temps near 28F and overnight lows near 17F. Total snowfall near 4 inches. Sunday partly cloudy with high temps around 33F and overnight lows near 20F. Monday partly cloudy with a high near 31F and overnight lows near 24F. Tuesday partly cloudy with a high near 35F and overnight lows near 10F.

Ask The Weatherman for December 20, 2013:

Question: What part of a thunderstorm is the most severe?

Answer: When looking at a thunderstorm, it’s important to identify which type of thunderstorm it is. For example, we will look at super-cell thunderstorms. With these storms, the worst part to be is anywhere in the storm as it has the capability of putting down strong, damaging winds in the front of the storm along the gust front. In the center of the storm the chances of seeing hail increase along with flooding rains. The final back quadrant of the storm is where you will usually find the tornado if the storm has one.

*** To have your question of the day answered or have your city spotlighted for the day make sure to visit redOrbit on Facebook. ***

December 20, 2013 Storm Tracker Update:

Top Right Image: Tropical Cyclone Bruce. Bottom Right Image: Tropical Cyclone Amara.

Eastern Pacific Ocean: Low pressure moving into the Gulf of Alaska will bring snow and gusty winds to the region. A second low moving into Western Canada and the Pacific Northwest will also bring rain and snow to the region. A third low moving out of the Baja will bring rain and higher elevation snows to the Southwest. Low pressure moving into the Great Lakes will bring a wide array of weather from rain, snow, ice, thunderstorms along with severe weather.

Atlantic Ocean: Low pressure moving into Greenland will bring rain and snow to both Greenland and Eastern Canada. Low pressure moving into Norway will bring snow to Scandinavia and showers to England. Low pressure near the Cape Verde Islands will bring showers to the region and parts of Northern Africa.

Western Pacific: Low pressure over Central Russia will bring snow and cold to the area. A strong storm system just off the coast of Japan will bring another day of rain showers to Japan and snow showers to Northern Japan.

Indian Ocean: In the Southern Indian Ocean we are watching Tropical Cyclone Bruce with winds around 125kts and pressure near 929mb. This storm is forecasted to remain over open waters and be only a marine threat. There is also Tropical Cyclone Amara with winds near 110kts and pressure of 941mb. This storm will also remain over open waters for the next couple of days.

Southern Hemisphere: There are multiple waves moving through the basin. Impacts are being felt over Argentina as well as South Africa where this region will see mainly gusty southeast winds. A third low is bringing showers and thunderstorms to a good portion of Australia today.

Major Weather Impacts Discussion for December 20, 2013:

Day 1-3: Low pressure moving into the Great Lakes along with the trailing cold front will have huge impacts across a large portion of the US. Showers and flooding are expected from Ohio to Texas, while a pocket of freezing rain is expected from Lake Michigan back towards Oklahoma. There will be thunderstorms from Eastern Texas towards Tennessee. Snowfall will be found on the backside of this from Northwest Texas into the Great lakes. There will also be a pocket of snowfall over the Northeast ahead of the warm front. A second cold front will make for rain and snow over the Pacific Northwest and also the Northern Rockies. We are also watching for high elevation snows over the Southwest US. Day two the major change will be the increased potential for severe weather as well. We will be looking at a line of severe weather from Alabama back towards Louisiana and the highest tornado threat looks to be over Central Mississippi. The period will finish with low pressure over the Northeast and the cold front along the Eastern US with showers and snow showers possible. High pressure will bring another round of colder weather over the Plains and into the Gulf Coast.

Day 4-7: The period will start with high pressure over the Mississippi and Ohio River Valleys extending into the Northeast and the Southeast, while a clipper system moves into the Northern Plains bringing some light snowfall to the region. The period will finish with a storm system developing in the Northern Gulf.

Day 8-12: The period will start with that low pressure moving out of the Gulf and along the Southeast US with showers and thunderstorms. Day nine will have a strong storm system moving into the Northern Plains with heavy snow and cold weather, while another Arctic high pushes into the Northern Rockies right behind the storm. The period will finish with another low developing in the Southwest US.

Long Range Outlook: The period will start with another big storm system moving into the Ohio River Valley and extending to the Gulf Coast. There will be heavy rainfall and another round of severe weather. On day 14 we will be watching the large storm system moving up the Eastern Seaboard creating a strong Nor-Easter for the region with heavy rains, coastal flooding and heavy snowfall inland. The period will end with high pressure dominating most of the country.

Green Energy Report for December 20, 2013:

Wave Energy: Two storm systems are impacting the Western US. This will leave the entire West Coast under strong amounts of wave energy. There will be moderate amounts of wave energy along the Northern Gulf Coast with strong onshore flow and also the Southeast US. The Northeast will have strong amounts of energy as well as a storm system approaches the region.

Hydro Energy: There will be ample amounts of long term energy over the Cascades. There will also be long term energy over the Southwest US in the higher elevations. There will be a large swath of long term energy over the Central Plains into the Western Lakes. The short term energy will be the best from Texas into Ohio.

Solar Energy: The best places for solar energy today will be over the Northern Plains. A second location will be along most of the Gulf Coast and a good portion of the Southeast and Mid-Atlantic.

Wind Energy: There will be ample amounts of energy over the Southwest behind the front and also behind the front over the Plains and into the Great Lakes. There will be a pocket of wind energy over a good portion of the Gulf Coast with the strong on shore flow today.

Weather and Your Wallet for Austin TX:

A trailing cold front and a secondary low to the west will influence the weather with cloudy skies and showers over the region today.

Dining: Today will be a good day to take lunch to work as the rain could make for an unpleasant time outside.

Transportation: There will be some minor delays on the roadways today due to the rainfall. The airports should remain on schedule as the rainfall will be fairly light.

Shopping: If you are heading out to do some last minute holiday shopping, make sure to take your umbrella with you.

Electricity: The region may see the need for air conditioning today. The forecast is for around 4CDD’s for the area.

Yard Work: Today will be a nice day to get the plants outside and let them enjoy both the warmer weather and the rain. The region is forecasting around 19GDD’s for the day.

Construction: There will be some impacts to the outdoor projects today.

Outdoor Venues: Today would be a good day to reschedule any outdoor plans.


Source: redOrbit Meteorologist Joshua Kelly

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