September 6, 2013
Big Story Weather – September 6, 2013
redOrbit Meteorologist Joshua Kelly
Big Story Weather from September 5:
The heat continued over the Plains again with many places getting into the 90’s with heat index values near 105F. Severe weather was limited. The largest hail was 2.75 inches in South Dakota. The strongest winds came from storms over Oregon and Idaho with gusts around 60-70mph. The coldest evening lows occurred over Northern Minnesota and portions of the Eastern Lakes as temps fell into the 30’s. Tropical Storm Gabrielle rained itself almost completely out over Puerto Rico and was downgraded.
Big Story Weather Discussion for September 6:
Surface Map: High pressure moving into the Ohio River Valley will provide another fall-like day for the region with partly cloudy skies and cool weather. This will expand into the Northeast as well. Low pressure moving into the Rockies will bring showers and thunderstorms to the region. These will extend into the Northern Plains later in the day. High pressure over the Southern Rockies will bring partly cloudy skies and hot weather to the region. The Pacific Northwest will see another day with heavy rainfall. The Gulf Coast will have afternoon sea breeze thunderstorms. Low pressure over the Baja will bring showers to Southern Arizona.
Severe Weather: There will be three areas of concern for severe weather today. The first will be along the Gulf Coast where there will be moderate rainfall and wind gust. The second will be through the Northern Plains with strong winds, heavy rainfall and large hail. The Southwest will see strong winds and heavy rainfall.
Winter Weather: There will be a pocket of frost and freeze again this evening over the Northeast near the high pressure area which will allow for clear skies and a very cool night.
Heat: There will be heat index values approaching the 110F mark over the Northern Plains.
Tropical Weather: Tropical Depression Gabrielle has winds around 20kts and pressure near 1009mb. This storm will move northward and does have the potential to re-develop this weekend. There is also an area of interest in the Southwest Gulf of Mexico that could possibly develop before moving over Mexico later today. Winds are now around 20kts and pressure near 1011mb. A third area is being watched for possible tropical development out over the Eastern Atlantic. Winds are around 30kts and pressure near 1011mb. This feature is moving west and has slight chance of further development.
Select City Forecast:
Baltimore MD: Partly cloudy skies today with a high near 78F and lows 66F.
Gulfport MS: Partly cloudy skies with isolated afternoon thunderstorms. High temps near 92F and lows near 76F. Total rainfall near 0.25 inches.
Omaha NE: Partly cloudy with afternoon thunderstorms. High temps near 88F and lows near 60F. Total rainfall around 0.15 inches.
Boise ID: Partly cloudy and warm with a high near 90F along with a few afternoon thunderstorms. Overnight lows will be around 73F. Total rainfall around 0.25 inches.
Salt Lake City UT: Partly cloudy and hot with high temps near 92F and lows near 70F.
September 6, 2013 Storm Tracker Update:
Eastern Pacific Ocean: Tropical Storm Lorena is currently tracking towards the Baja with winds around 35kts and pressure near 1005mb. It will make landfall along the Baja and then push northward with all the moisture pushing into the Southwest US. Low pressure moving over Alaska will bring showers to the region.
Atlantic Ocean: Tropical Depression Gabrielle has winds around 20kts and pressure of 1009mb. The storm is forecasted to move northward and possibly regain strength later this weekend. An area is also being watched over the Southwest Gulf for possible tropical development. There is one wave over the Eastern Atlantic and another over Africa that are both being watched for possible tropical development. Low pressure moving over Eastern Canada will bring showers to the region. Another area of low pressure is moving towards England. Low pressure moving through Central Russia will bring moderate rainfall to the region.
Western Pacific: Low pressure moving off of Eastern China will bring showers and thunderstorms to the region. A second low pressure is now moving away from Japan.
Indian Ocean: The southwest monsoon will be very active today allowing for increase showers and thunderstorms from India to Sri Lanka.
Southern Hemisphere: Multiple areas of low pressure moving through the basin with impacts being felt over Southern South America with rain and snow showers for the region. A second low pressure will bring rain showers and strong winds to South Africa this weekend. A third area of low pressure will be moving over Southern Australia with showers.
Five-Day Storm Index Outlook for September 6-10:
Baltimore MD: The period will start out impact free, followed by a few days with showers and thunderstorms impacting with slight to moderate impacts. Then the period will finish impact free.
Gulfport MS: Over the next five days afternoon thunderstorms will bring slight to moderate impacts to the area.
Omaha NE: The period will start out with impacts, followed by another chance to see impacts on September 9 as another round of thunderstorms moves through the region.
Boise ID: The region will see slight to moderate impacts today associated with thunderstorms. The remainder of the period will be impact free.
Salt Lake City UT: The period will start out impact free, followed by thunderstorms on September 8-9 bringing slight to moderate impacts to the region.
Climate Watch for September 1-5:
Baltimore MD: The past five days have been warm with temps around 3-9 degrees above normal.
Gulfport MS: The past five days have been warm with temps around 2-4 degrees above normal.
Omaha NE: The period started with temps around 2 degrees above, then briefly fell to around 2 degrees below before finishing the period around 1-5 degrees above.
Boise ID: The past five days have brought plenty of heat to the region, with temps around 1-9 degrees above normal.
Salt Lake City UT: The past five days have seen temps around 3-13 degrees above normal.
Major Weather Impacts Discussion for September 6, 2013:
Day 1-3: High pressure over the East Coast will bring nice weather to the region along with cooler nights. A storm system moving into the Northern Rockies and Plains will bring showers and thunderstorms to the region. Afternoon sea breeze will bring thunderstorms to the Gulf Coast and Southeast. High pressure over the Rockies will bring dry and warm conditions to the region. An area of low pressure will bring another day of showers and flooding to the Northwest. The Southwest will see an increase in monsoonal moisture as well today. The period will finish with high pressure over the Northeast. Showers will be pushing through the Northern Plains. An increase in tropical moisture will push into the Gulf Coast region.
Day 4-7: The period will start with high pressure along the East Coast and an increase in tropical moisture over the Northwestern Gulf Coast. A frontal boundary moving through the Northern Plains will bring showers and thunderstorms to the region. The southwest monsoon along with the tropical feature will bring heavy rainfall to the Southwest. Day six the frontal boundary will push into the Northeast bringing showers and thunderstorms across most of the East Coast. The tropical moisture moving over Eastern Texas will lead to some minor flooding. The remains of the Eastern Pacific tropical moisture will push into the Rockies. The period will finish with the frontal boundary along the East Coast with showers and thunderstorms and high pressure building into the Northern Plains.
Day 8-12: The period will start with high pressure over the Great Lakes and the Northeast. Another low pressure system will move into the Northern Plains. The gradient between these two systems will bring very strong southerly flow over the Northern Plains creating strong winds. A new storm system will push into the Northwest. Day ten the high pressure will block in over the Eastern US forcing a storm system to stall in the Great Lakes and Northern Plains. This will bring moderate rainfall to the region. Return flow from the Gulf Coast will establish itself bringing afternoon thunderstorms again along with a surge in the Southwest monsoon. The period will finish with high pressure slowly breaking down over the East Coast allowing for the frontal boundary to push across the Ohio River Valley.
Long Range Outlook: The period will start with a strong low pressure system moving through the Northern Plains and Great Lakes bringing showers and thunderstorms to the region. The return flow will bring showers and thunderstorms to the Gulf Coast and Southeast. The period will finish with a tropical feature moving through the Northern Gulf along with another strong storm system moving through the Northern Plains.
Today's Spotlight Forecast is for Kansas City MO:
Friday: Partly cloudy and warm with high temps near 90F. Winds from the south 5-10mph. Overnight lows near 66F.
Saturday: Partly cloudy and hot with a high near 93F. Winds from the southwest 5-10mph. Overnight lows near 70F.
Sunday: Partly cloudy hot with a few afternoon thunderstorms. High temps around 93F and overnight lows near 73F. Winds from the southeast 7-12mph and total rainfall near 0.10 inches.
Monday: Partly cloudy and hot with a high near 95F. Winds from the southwest 7-12mph. Overnight lows near 72F.
Tuesday: Partly cloudy and hot with a high near 94F. Winds from the southwest 7-12mph. Overnight lows near 70F.
Ask The Weatherman for September 6, 2013:
Question: Why is the Polar front jet stream so important ?
Answer: The polar front jet stream, also known as the PFJ, is the dividing line between colder air and warmer air. This front moves along at about 20,000-30,000ft above the ground and it transports the low pressures and high pressures around like an airplane. These strong winds can move weather systems very fast. . It may only take two days for a low pressure to move from the West Coast of the US to the Northern Plains of the US depending on how strong these winds are - usually between 50-250kts.
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Green Energy Weather Report for September 6, 2013:
Wave Energy: There will be light to moderate wave energy over the Northeast and also the Mid-Atlantic. The Southeast will see increasing wave energy. The Northern Gulf of Mexico will have light amounts of energy. The Southwest will have moderate amounts of energy along with the Northwest.
Solar Energy: There will be ample amounts of energy over the Northeast along with the Gulf Coast and Southeast before the sea breeze sets up. The Plains and the Great Lakes will have moderate amounts of energy as well before the afternoon thunderstorms move into the region. The Rockies will have ample amounts of solar energy as high pressure dominates the weather.
Wind Energy: The best wind energy today will be over the Northern Plains and also over the Pacific Northwest behind the frontal boundary.
Hydro-Energy: There will be moderate to extreme amounts of energy over the Pacific Northwest. The Southwest will see light amounts of energy. There will also be light amounts of energy for the Gulf Coast and the Southeast. There will also be light to moderate amounts of energy over the Northern Plains.
September 6 Weather and Your Wallet (Denver CO):
High pressure will influence the weather with partly cloudy skies and warm temps.
Dining: Today will be a nice day to go out for lunch and celebrate the football win from last night.
Transportation: There will be no issues with flights at the airport or along the major roadways.
Shopping: Today will be a nice day to get out and enjoy some shopping.
Electricity: There will be a small demand for cooling this afternoon as high temps rise to around 90F.
Yard Work: Today will be a nice day although a tad bit warm this afternoon
Construction: There will be no delays with outdoor projects today.
Outdoor Venues: The region will be impact free and it should be a great day to head out to the park.