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Big Story Weather – December 17, 2012

Dec 17, 12 Big Story Weather – December 17, 2012

Daily weather forecast and wrap-up provided by redOrbit meteorologist Joshua Kelly.

Big Story Weather from December 14-16: Low pressure moved through the Northern Plains and brought a wintry mix to the region along with some accumulating snowfall. The Pacific Northwest was dealing with more onshore flow and heavy rains and mountain snows. High pressure built in over the Southeast and Northeast. The weekend finished with a frontal boundary moving through the Ohio River Valley extending into the Gulf Coast.

Weather Outlook for December 17: Low pressure is moving through the Great Lakes region today. Look for snow showers to develop along the lakes and for showers to move into the bigger cities along the coast. A second area of low pressure is moving through the Southeast which will bring showers and thunderstorms to the region extending back into the Gulf Coast. High pressure over the Southwest will bring partly cloudy skies to the region. Another area of low pressure moving into Montana will bring showers to the coastal cities, while higher elevation snows will pile up as many winter storm warnings and blizzard warnings are in effect for this region. Also look for the cloud cover and precipitation to slowly shift into the Northern Plains through the afternoon. Below is the weather for a few select cities.

Baltimore MD: Mostly Cloudy with evening showers: 54F
Atlanta GA: Showers becoming Partly Cloudy: 64F
Fargo ND: Mostly Cloudy: 23F
Billings MT: Mostly Cloudy: 42F
Seattle WA: Cloudy with Showers: 38F

International Weather Outlook for December 17: An area of low pressure moving across Japan will bring mostly cloudy skies with a few showers to the region. High pressure building in over Eastern China will bring partly cloudy skies and this will extend into the Koreas. High pressure over the Tibetan Plateau will keep the moisture confined to Southeast Asia. Low pressure will be moving on shore over Spain and will bring showers to the lower elevations along with snow to the higher elevations; the showers will extend back into England as well. An area of low pressure will be moving towards Western South America near the tip and will bring clouds and showers to the region. A frontal boundary to the south of Australia will bring showers and cloud cover to most of Australia. Also Tropical Cyclone Evan will be impacting the Fiji Area. Here is the forecast for a few select international cities.

Tokyo Japan: Clear with a low near 5C.
Hong Kong China: Partly Cloudy with isolated showers and a low near 17C.
Singapore: Partly Cloudy with a low near 23C.
London England: Partly Cloudy with a few rain showers and a low near 2C.
Sydney Australia: Partly Cloudy with a low near 14C.

December 17, 2012 Storm Tracker Update:

Atlantic Basin: Low pressure moving into Western Europe will bring showers and higher elevation snows to the region. Low pressure moving through Greenland will bring snow showers to the region. Low pressure moving up the East Coast of the United States will bring showers and snow showers to the region.

Eastern Pacific: A potent low pressure system is moving through the Pacific Northwest as the associated frontal boundary is going through the region bringing very heavy snows and rains. Another significant low pressure system is moving northeast of Hawaii and making its way towards the West Coast. A third area of low pressure is moving towards the Western Gulf of Alaska.

Western Pacific: Low pressure now moving east of Japan is bringing cloudy skies to the region. Another area of low pressure is moving into Central Russia along with a region of low pressure to the Northwest of India.

Indian Ocean: There is one area of low pressure along the monsoonal trough this morning moving through Southeast Asia.

Southern Hemisphere: Tropical Cyclone Evan is currently impacting the Fiji area with very strong winds, high seas and heavy rainfall. Winds are estimated to be around 105kts with a pressure of 944mb. This system will begin to weaken as it makes its way towards the south. Low pressure over the Southern tip of South America is bringing a few showers to the region and an area of low pressure moving through Australia will bring showers to the region.

Five Day Storm Index Outlook for December 17-21:

Baltimore MD: A chance for showers today will bring a slight impact to the region. Look for conditions to improve with another chance for showers and slight impacts on the 20th.

Atlanta GA: Showers today will bring slight impacts to the region followed by a few days of high pressure and then another frontal boundary with a chance of impacts on the 20th.

Fargo ND: A few light snow showers on the 18th will bring slight impacts to the region.

Billings MT: Impacts will be seen today with a few rain showers and snow showers in the region, otherwise the remainder of the period looks good.

Seattle WA: Showers and possibly light snow on the 18th will bring slight impacts to the entire region over the next five days.

Climate Watch for December 12-16:

Baltimore MD: The temps started about 1-2 degrees below average but quickly warmed to around 5-8 degrees above average for the remainder of the period.

Atlanta GA: The period started with temps around 3 degrees below average, followed by a warming with temps rising to around 4-6 degrees above average.

Fargo ND: Temps started around 6 degrees above average and then after the front passed temps fell to around 7 degrees below average but quickly warmed back up to around 2-9 degrees above average.

Billings MT: Temps have been running about 3-5 degrees above average the entire period.

Seattle WA: The period has been seeing temps around 1-5 degrees below average the entire period.

Major Weather Impacts Discussion for December 17, 2012:

Day 1-3: A frontal boundary beginning to push into the East Coast will bring showers and some snow to the Great Lakes region along with thunderstorms along the Gulf Coast. High pressure over the Southwest will bring nice weather to the region and this will extend into the Southern Plains. A potent winter storm system is impacting the Northwest with very heavy snows and rains. This will slowly push towards the Northeast. The middle of this period will have the high pressure push into the Southeast while low pressure moves into the Southwest. Another frontal boundary will begin to push towards the Pacific Northwest. The period will end with our low pressure and frontal boundary moving into the Plains and a strong area of high pressure building in over the Rockies.

Day 4-7: The period will start with a major winter storm in the Great Lakes and the upper Ohio River Valley while some severe weather will be impacting the Gulf Coast and Southeast. High pressure will be over the Rockies with another frontal boundary beginning to move into the Pacific Northwest. The period will end with a frontal boundary moving into the West Coast.

Day 8-12: The period will begin with a weak area of high pressure along the East Coast while a frontal boundary may begin to setup along the Gulf Coast and high pressure in the Northern Plains. A strong area of low pressure will be moving into the Rockies during this time bringing some heavy snowfall to the region. The 25th will see high pressure along the East Coast with a major weather system moving through the Southern Plains with heavy snows to the north along with Severe Weather to the south into the Gulf Coast region. Another potent frontal system will begin to make its way towards the Northwest. The middle of this period we will see a very potent winter storm system in the Great Lakes with heavy rain along the East Coast and heavy snows into the Great Lakes along with a strong cold front extending into the Gulf Coast region with severe weather likely.

Day 13-15: Another area of low pressure will begin to impact the Gulf Coast region to start this period. High pressure will be in over the Great Lakes and the East Coast. High pressure will build in over the Rockies along with another frontal boundary moving onshore over the Pacific Northwest. The period will end with high pressure along the East Coast and another area of low pressure moving into the Southwest during this time period. There will also be another frontal boundary approaching the Pacific Northwest.

Today’s Spotlight Forecast is for Chicago IL:

Monday: Partly Cloudy and cool with a high near 37F, winds from the Southwest around 2-7mph as overnight lows fall to around 30F.

Tuesday: Partly Cloudy and warmer with a high near 40F, winds will be from the Southwest around 8-13mph as overnight lows fall to around 35F.

Wednesday: Mostly Cloudy with Showers as high temps rise to around 46F, winds Southeast around 12-17mph as overnight lows fall to around 36F.

Thursday: Mostly Cloudy with rain becoming mixed with snow by afternoon and then changing to all snow by late afternoon with accumulations likely. High temps will be around 45F, and low temps will fall to around 16F as winds will start Southeast and then shift to the Northwest around 22-27mph with higher gust.

Friday: Partly Cloudy with a high near 24F, winds from the Northwest around 18-23mph as overnight lows fall to around 16F.

Ask The Weatherman for December 17:

Question: What are the different categories of Tropical Systems?

Answer: First, when it comes to tropical weather forecasting, we have what is known as a Tropical wave and this is a feature that is moving along the Tropics that shows signs of embedded thunderstorm activity. However, the next stage is a tropical depression and this is when the storm begins to show organization. The next step is a tropical storm. Once the tropical reaches this level it forms a closed isobar on the weather chart. Along with that we have winds that increase to greater than 33kts but less than 64kts. The next step is a Hurricane. Once the storm hits this level it has winds greater than 64kts along with a really well-developed eye in the center of the storm. Now, if the storm continues to strengthen, it can become a Major Hurricane which is a CAT 3 storm or stronger.

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Green Energy Weather Report for December 17:

Wave Energy: The frontal boundary moving through the Pacific Northwest is creating some good wave energy in the region. The frontal boundary that is beginning to push into the Northern Gulf will create some good wave energy in the region. The third place is along the Atlantic Coast as the front will begin to push out later this afternoon.

Solar Energy: High pressure in the Southwest and Southern Plains will make these two places the best areas for solar energy today.

Wind Energy: The frontal boundary moving through the Northwest will create a nice wind field area of energy in this region today.

Hydro-Energy: The Pacific Northwest will get both rainfall and some mountain snows that will allow the region to build up a hydro base for the spring time period. The frontal boundary moving along the East Coast and into the Gulf Coast region will also bring this region some much needed rainfall.

December 17 Weather and Your Wallet (Kansas City MO):

Dining: You will need a jacket this morning as it will be cool. As for eating outdoors, you will want to look at maybe taking a lunch to work on this Monday.

Transportation: A cool day however no impacts expected to the transportation realm.

Shopping: You will need a jacket this morning if you are shopping, otherwise a nice afternoon to hit the malls.

Electricity: Looking at a big heating day with the HDD’s approaching 22.5HDD. This will create a large demand during the overnight hours with a modest need throughout the day as temps remain cool.

Agriculture: No impacts to the region, a good chance to get the winter equipment ready for later this week as the snow removal equipment may be needed.

Construction: A cool day to be working outside, however no precipitation should make it a good day to get those projects done before the big winter storm later this week.

Outdoor Venues: A good afternoon to throw a jacket on and get the dogs out to the park and let them enjoy some fresh air.

Image Credit: John McCormick/Shutterstock

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