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Big Story Weather – September 23, 2013

September 23, 2013

redOrbit Meteorologist Joshua Kelly

Big Story Weather from September 20-22:

The biggest story of this past weekend was the landfall of Typhoon Usagi which brought flooding rains to Southeastern China including Hong Kong. Winds were over 100mph at landfall. Severe weather over the US was also found this weekend. Friday was a bad day for Mississippi with five reported tornados ranging from EF-0 to EF-2 and wind gusts in the 90-100mph. Saturday was a limited severe weather day with one tornado reported over North Carolina and wind gusts in the 80-90mph range. On Sunday there were no tornadoes, however 2-inch was reported in Colorado along with wind gusts in the 65-75mph range. Cool weather also settled in this past weekend with many places getting their first frost of the season.

Big Story Weather Discussion for September 23:

Surface Map: High pressure over the Great Lakes will bring with it an area of frost/freeze conditions around the Great Lakes and also over to portions of the Northeast. A second pocket of frost/freeze conditions will be possible over Northern Nevada. Rain and thunderstorms will be possible along the warm front over the Gulf Coast. Some heavy rainfall will be possible in this region. Low pressure moving through the Northern Plains will bring showers and thunderstorms to the region. Showers will also be over the Pacific Northwest.

Severe Weather: There will be limited severe weather areas today. The most likely position will be over the Northern Plains with large hail and damaging winds bring the primary threats. There will be limited thunderstorms over the Gulf Coast as well. This region will see mostly heavy rainfall.

Winter Weather: High pressure over the Great Lakes will bring a chance for frost/freeze conditions to portions of the Great Lakes and also over parts of the Northeast. There will also be a pocket of frost/freeze over Northern Nevada.

Flooding: There will be a slight chance for flooding over the Gulf Coast.

Tropical Weather: No impacts.

Winds: There will be strong winds over the Northern Plains with some places seeing gusts near 45mph.

Select City Forecast:

Boston MA: Partly cloudy and cool with a high near 64F and overnight lows near 45F.

Mobile AL: Partly cloudy with afternoon thunderstorms. High temps near 87F and overnight lows near 73F. Total rainfall will be around 0.50 inches.

Sioux City IA: Partly cloudy and mild with a high near 74F and overnight lows near 60F.

Boise ID: Partly cloudy with a high near 67F and overnight lows near 57F.

Seattle WA: Mostly cloudy with showers. High temps near 57F and overnight lows near 50F. Total rainfall will be around 1inch.

September 23, 2013 Storm Tracker Update:

Eastern Pacific Ocean: Low pressure moving through the Gulf of Alaska will bring showers and snow showers to the region. Low pressure moving through Central Canada will bring a front over the Plains leading to showers and thunderstorms.

Atlantic Ocean: Low pressure over the Western Gulf Coast and the associated warm front will bring moderate rainfall to portions of the Gulf Coast. Low pressure over Eastern Canada will bring showers to the region. Low pressure to the southwest of Spain will bring gusty winds and high seas to the region. Another low pressure moving through Central Europe will bring showers to the region. A tropical wave moving off the coast of Africa is being watched for possible tropical development.

Western Pacific: Typhoon Pabuk is moving to the southeast of Iwo Jima bringing strong winds and heavy rainfall to Iwo Jima. The storm is forecasted to gain some strength as it continues on a west-northwest track over the next 24 hours. Low pressure over Eastern Russia will bring heavy rainfall to the region. Two other tropical areas are being watched for possible tropical development.

Indian Ocean: The southwest monsoon will be a tad bit weaker in coverage today, however still look for showers and thunderstorms over the region. A wave has also pushed out over the Indian Ocean and will be watched over the next couple of days.

Southern Hemisphere: Multiple areas of low pressure are moving through the basin with thunderstorms over the Fiji Islands. We are also looking at another cold front which is bringing a few showers to Northern Argentina. A third wave is bringing showers and gusty winds to Southern Africa. Another frontal boundary is bringing showers to Southwest Australia and also South-Central Australia. An increase in tropical moisture is now impacting Northern New Zealand.

Five-Day Storm Index Outlook for September 23-27:

Boston MA: Over the next five days high pressure will bring impact free weather for the region.

Mobile AL: A storm system moving through the Northern Gulf will bring showers and thunderstorms to the region over the next several days leading to slight to moderate impacts.

Sioux City IA: The period will begin impact free. The period will end with a cold front moving through the region bringing a few showers and thunderstorms to the region along with slight to moderate impacts.

Boise ID: The period will start impact free. By the middle of the period a cold front will bring showers and thunderstorms to the region along with moderate impacts.

Seattle WA: The region will have moderate impacts over the next few days associated with showers; some which may be heavy at times. The period will finish impact free.

Climate Watch for September 18-22:

Boston MA: The past five days have been mild with temps around 1-6 degrees above normal.

Mobile AL: The period started around 1-2 degrees below and then warmed to around 4-5 degrees above normal. The period then finished around 5-8 degrees below normal.

Sioux City IA: The past five days have been warm with temps around 2-13 degrees above normal.

Boise ID: The period started around 3-9 degrees below normal and then warmed to around 11 degrees above normal before falling to around 4-8 degrees below normal.

Seattle WA: The period started with temps around 1-2 degrees below normal. The period then warmed to around 5-8 degrees above normal, while the end of the period saw temps near 3 degrees below normal.

Major Weather Impacts Discussion for September 23, 2013:

Day 1-3: High pressure over the Great Lakes will bring sunny skies to the Northeast along with the chance of seeing a frost/freeze overnight as well. A low pressure moving through the Northern Gulf will bring showers to the Gulf Coast along with thunderstorms and heavy rainfall. A storm system moving through the Northern Plains will bring showers and thunderstorms to the region. The majority of the West will be dry and warm, however the Pacific Northwest will be cool with showers as a frontal boundary approaches the area. Day two showers and thunderstorms will be along the Gulf Coast, while showers will also be over portions of the Pacific Northwest. The period will end with showers over the Gulf Coast and Southeast, while another storm system pushes out of the Pacific Northwest into the Rockies.

Day 4-7: The period will start with showers over Florida and the storm system will push into the Northern Plains bringing showers and thunderstorms to the region. Day five high pressure will be along the East Coast, while a storm system brings another day of showers and thunderstorms over the Northern Plains. Day six high pressure will be over the East Coast. A storm system will be in the Northern Plains bringing showers and thunderstorms. This will extend to the Gulf Coast. Another storm system will enter the Pacific Northwest. The period will end with a powerful storm system over the Pacific Northwest.

Day 8-12: The period will start with high pressure over the East Coast, a tropical wave near Puerto Rico, high pressure over the Northern Plains, and a storm system entering the Pacific Northwest. Day nine a tropical feature will be over Cuba and slowly moving west-northwest. Day ten the tropical feature will move to the north of Cuba and to the southeast of Florida. A strong storm system will also be moving into the Plains region and high pressure will dominate the Western US. The period will finish with a frontal boundary extending from the Northeast back into the Midwest, high pressure pushing into the Northern Plains, and the tropical feature will be moving up the East Coast.

Long Range Outlook: The period will start with a tropical feature approaching Bermuda and high pressure over the East Coast. A strong storm system will be moving through the Northern Plains and another storm system will be heading into the Pacific Northwest. The period will finish with a strong storm system extending from the Great Lakes to the Gulf Coast bringing showers and thunderstorms, while high pressure builds in over the Northern Plains bringing more cool air to the region.

Today’s Spotlight Forecast is for Fargo ND:

Monday: Partly cloudy and mild with a high near 78F. Winds will be gusty from the southeast 15-20mph. Overnight lows near 56F.

Tuesday: Partly cloudy and mild with a high near 75F. Winds from the southwest 5-10mph. Overnight lows near 54F.

Wednesday: Partly cloudy with a high near 79F. Winds from the southeast 9-14mph. Overnight lows near 57F.

Thursday: Partly cloudy and warm with a high near 80F. Winds will be gusty from the southeast 18-23mph. Overnight lows near 50F.

Friday: Partly cloudy and cool with a high near 60F. Winds from the northwest 5-10mph. Overnight lows near 44F.

Ask The Weatherman for September 23, 2013:

Question: What is an Air Mass Thunderstorm?

Answer: An air mass thunderstorm is a type of thunderstorm that occurs when the air mass that they are in is marine time tropical, meaning that it is warm and moist. These types of thunderstorms are most common over the Southeast US and also the Gulf Coast of the US.

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Green Energy Weather Report for September 23, 2013:

Wave Energy: There will be light to moderate amounts of energy along the entire East Coast. There will be moderate amounts of energy over the Gulf Coast. The Southwest and Northwest will have moderate to extreme amounts of energy.

Solar Energy: There will be ample amounts of solar energy over the East Coast back into the Great Lakes and over most of the Southern Plains.

Wind Energy: There will be moderate to extreme amounts of wind energy over the Northern Plains behind the cold front and also over portions of the Colorado Rockies.

Hydro-Energy: There will be ample amounts of energy over the Gulf Coast and portions of the Northern Plains. There will also be ample amounts of energy over the Pacific Northwest.

September 23 Weather and Your Wallet (Denver CO):

A strong cold front will move through the region this morning bringing with it showers and thunderstorms this morning. This should give way to partly cloudy skies by this evening.

Dining: This morning will not be the best time for outdoor dining as showers and thunderstorms move through the region. This evening will be a good chance to get out and enjoy a nice dinner at your favorite outdoor spot.

Transportation: There will be some delays on the roads this morning during the commute. The airport will see some delays as well.

Shopping: This morning you will want an umbrella if you are out shopping. This evening will be a better time to get out and enjoy the fall sales.

Electricity: Today will be a cool day so the region will see around 10HDD’s for the day with most of them coming during the overnight hours.

Yard Work: There will be a small growing period today – around 1 GDD for the region. This afternoon would be the best time for any yard work.

Construction: The region will be impacted this morning with showers and thunderstorms bringing a delay to the outdoor projects.

Outdoor Venues: This morning you will want to reschedule and outdoor plans. This evening would be a great time to take a walk in the park or to catch any evening sporting events.


Source: redOrbit Meteorologist Joshua Kelly

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