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Big Story Weather – May 21, 2013

May 21, 2013

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

redOrbit Meteorologist Joshua Kelly

Big Story Weather from May 20: A very sad day yesterday as a large EF-4 or 5 tornado hit the city of Moore, Oklahoma creating wide-spread damage. This was one of many tornadoes to hit yesterday in what is the most deadliest day of severe weather for the United States this year. The tornadoes had formed along a very slow moving cold front and impacted as far north as Iowa last night. Large hail was also a concern with many places getting hail the size of golf balls and larger. There was also massive wind damage from the storms. Please give a moment of prayer/thought for the people of Moore OK today.

Big Story Weather Discussion for May 21: The warm front will push into the Northeast today bringing showers and thunderstorms to the East Coast. An upper air feature will bring another day of showers and thunderstorms to the Southeast Coast. High pressure along the Florida Gulf Coast will keep the region nice today. Our strong storm system will push into the Great Lakes, however the cold front will extend all the way back into Oklahoma and Texas again. This region will be impacted with strong to severe storms. If you live anywhere along this front please pay close attention to your news outlets today.

Severe Weather: A large area of severe weather is possible from Eastern Texas all the way to the Great Lakes. Another day of damaging winds, large hail and tornadoes is likely in this region. A second area of strong-severe thunderstorms will be possible over parts of the Southeast associated with an upper level trough. This region should mostly see damaging winds and some hail. There is a smaller tornado threat for this area as well.

Here is the weather for a few select cities:

Baltimore MD: Mostly cloudy with afternoon thunderstorms and a high near 79F. Overnight lows will be around 70F. Total rainfall today will be around 0.50 inches.

Atlanta GA: Mostly cloudy with afternoon thunderstorms and a high near 82F. Overnight lows will be around 72F. Total rainfall will be near 0.50 inches.

Topeka KS: Mostly cloudy with periods of light rain today. High temps will be around 70F and overnight lows will fall to around 57F. Total rainfall for today will be around 0.25 inches.

Denver CO: Partly cloudy today with a high near 61F. Overnight lows will be near 54F.

San Diego CA: Partly cloudy with a high near 70F. Overnight lows will drop to near 62F.

May 21, 2013 Storm Tracker Update:

Atlantic Basin: Low pressure moving through Western Europe will bring showers to the region. Another area of low pressure moving towards Greenland will bring showers and possibly snow showers to the area. Two areas of lower pressure are currently along the ITCZ in the Atlantic basin and will have to be watched over the next couple of days. Low pressure moving into the Great Lakes will bring another day of severe weather to the region and will reach all the way southward back into Oklahoma and Texas.

Eastern Pacific: Low pressure moving into Western Canada will bring showers and even a few snow showers to the region and showers to the Pacific Northwest. Another area of low pressure moving through the Gulf of Alaska will bring showers and snow showers to the region. An area of low pressure to the northeast of Hawaii will bring winds/seas to the region. The remains of Alvin continue to drift slowly to the west.

Western Pacific: Low pressure moving through Central China will bring showers to the region. Low pressure to the northeast of Japan will bring a trailing frontal boundary through the region. Expect to see showers and clouds along the boundary. Low pressure moving along the East Coast of China will bring showers and thunderstorms to Okinawa.

Indian Ocean: Two areas of low pressure are moving along the monsoonal trough just to the south of India and also in the Bay of Bengal.

Southern Hemisphere: Multiple areas of low pressure are moving through the basin with one storm system impacting Argentina with showers and also some higher elevation snows. Low pressure moving through Eastern Australia will bring showers to the region as well.

Five-Day Storm Index Outlook for May 21-25:

Baltimore MD: The next four days the region will have slight to moderate impacts with strong to sever thunderstorms possible in the region. The period will finish impact free.

Atlanta GA: The next three days the region will see slight to moderate impacts associated with strong to severe thunderstorms. The period will finish impact free.

Topeka KS: The area will have slight impacts today associated with showers. Moderate impacts will be possible by May 24-25 as another round of thunderstorms move into the region.

Denver CO: The area will start impact free. By May 24 the region will have slight to moderate impacts associated with a few thunderstorms moving into the region.

San Diego CA: The area will enjoy being impact free for the next five days.

Climate Watch for May 16-20:

Baltimore MD: The period saw temps around 7-8 degrees above normal to start with and then cooled down to around 5-7 degrees below. The period finished with temps back near 5 degrees above normal.

Atlanta GA: The period began with temps around 1-2 degrees above normal followed by temps dropping to near 6-8 degrees below normal. The period finished with temps around 4 degrees above normal.

Topeka KS: The past five days the region has seen temps around 5-8 degrees above normal.

Denver CO: The area started with temps about 5-16 degrees above normal and then finished the period with temps around 3-7 degrees below normal.

San Diego CA: The period started with temps about 2 degrees below normal followed by a 1-2 degree above normal period then fell just below normal again before finishing the period just above normal.

Major Weather Impacts Discussion for May 21, 2013:

Day 1-3: A strong storm system moving into the Great Lakes and the associated cold front will be the center of attention today for the potential of another round of severe weather in the region from Illinois to Oklahoma. A new storm system moving onshore over the Pacific Northwest will bring showers and higher elevation snows to the region. Day two the storm system will push into the Eastern Lakes and the cold front will extend to the Gulf Coast. This will provide another day of showers and thunderstorms along that boundary with some severe weather possible. The storm system will also move into the Rockies bringing rain to the region. The period will finish with the low pressure exiting the Northeast and the frontal boundary bringing showers and thunderstorms to the entire East Coast. High pressure will be over the Northern Plains and Great Lakes, while low pressure slides into the Southern Rockies.

Day 4-7: The period will start with a large area of high pressure over the Great Lakes and parts of the Northeast. Storms will be back over parts of the Plains with the next storm system. Day five high pressure will be along both coasts with a storm system moving through the Northern Plains. The period will finish with high pressure along the East Coast and the storm system still bringing showers and thunderstorms to the Northern Plains. A new storm system will graze the Northwest.

Day 8-12: The period will start with high pressure along the East Coast and a warm front extending from the Plains across the Great Lakes. Expect to see showers and thunderstorms in this region. Low pressure over the Northern Plains will bring showers and thunderstorms to the region. Day ten high pressure will be over the Southeast, while a storm system moves through the Northeast and another one moves into the Northern Plains. There could be some severe weather with this system. Day eleven we could be dealing with severe weather over the Northern Plains and also a tropical wave over the Yucatan Peninsula. The period will finish with high pressure along the East Coast, a storm system in the Great Lakes, and another in the Northern Plains.

Long Range Outlook: The long range will start with showers over the Great Lakes and the Western Rockies. The tropical wave will push slightly into the Southeastern Gulf. The period will finish with a tropical feature in the Gulf of Mexico.

Today’s Spotlight Forecast is for Sioux Falls SD:

Tuesday: Mostly cloudy with showers. High temps will be around 56F. Winds will be from the northeast 7-12mph as overnight lows fall to around 47F. Total daytime rainfall will be around 0.25 inches.

Wednesday: Mostly cloudy with showers. High temps will be around 54F. Overnight lows fall to around 42F. Winds will be from the northeast 7-12mph and total rainfall for the day will be around 0.15 inches.

Thursday: Partly cloudy and warmer with a high near 69F. Winds will be from the southeast 7-12mph as overnight lows fall to around 44F.

Friday: Partly cloudy with afternoon thunderstorms. High temps will be around 68F and overnight lows will fall to near 56F. Winds will be from the southeast 12-17mph and total rainfall will be around 0.15 inches.

Saturday: Partly cloudy with afternoon thunderstorms. High temps will be around 66F and overnight lows will fall to near 60F. Winds will be from the southeast 10-15mph and total rainfall will be near 0.60 inches.

Ask The Weatherman for May 21, 2013:

Question: What does EF stand for in weather?

Answer: Today we look at a severe weather term known as EF or Enhanced Fujita Scale. This is an updated scale from the original scale that was created by Ed Fujita. Ed studied a massive tornado outbreak that hit the Midwest and was able to come up with crucial information in the tornado research area. He created the first measurements of tornadoes known as the Fujita scale.

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

Green Energy Weather Report for May 21, 2013:

Wave Energy: There will be slight to moderate wave energy potential for the Northeast and also the Mid-Atlantic Region. The Southeast should have moderate wave energy potential with an upper level feature moving near the coast. The Northern Gulf of Mexico will have slight wave energy today as the winds will be rather light in the region. The Southwest will be looking at moderate amounts of energy and the Pacific Northwest will have moderate to excellent wave energy potentials as a storm system moves on shore through the region.

Solar Energy: The best place for solar energy today will be through the Rockies and down into the Southwest. A second area will be along the Gulf Coast region and then a small region will be possible over the Northeast.

Wind Energy: The strongest wind energy locations today will be over the Dakotas behind the low pressure area and also over the Rockies right behind the cold front. This will push the cold air into the Plains.

Hydro-Energy: There will be a large area of hydro energy today from the Great Lakes back into the Southern Plains along the frontal boundary. A second area will be from the Ohio River Valley into the Mid-Atlantic region and also into portions of the Southeast. A new storm system moving on shore over the Northwest will bring some energy to that region as well. There could also be some snowfall in this region at higher elevations.

May 21 Weather and Your Wallet (Biloxi MS):

High pressure to the east will bring partly cloudy skies and southeasterly flow.

Dining: Today will be an excellent day to have lunch outdoors.

Transportation: There will be no weather issues on the roads today.

Shopping: Today will be a very nice day to hit the malls and stores.

Electricity: There will be a moderate demand for cooling all day long with the highest amounts coming between 3pm and 7pm. We are looking at about 14.5CDD´s for the day.

Yard Work: The sun is going to bring the heat today. The flowers and the gardens are going to be happy with 28.5GDD´s forecasted. Make sure to water the plants this evening as they will need it.

Construction: No issues with working on outdoor projects today.

Outdoor Venues: Today will be an excellent day to get out and enjoy the beach or the boardwalk as temps soar into the upper 80´s.


Source: redOrbit Meteorologist Joshua Kelly

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