October 5, 2012
Wind shear proved too much for Oscar late Friday morning, as Oscar lost all tropical characteristics. Oscar is being swept up by a large storm system over the central Atlantic Ocean, the same one that absorbed Nadine on Thursday.
While Nadine continues its reign in the Central Atlantic, Oscar has become the 15th named storm of the season. A large non-tropical storm that will influence the tropics is also gathering steam in the North Atlantic.
Tropical Depression 15 formed Wednesday midday, Oct. 3, 2012 from a tropical wave about half way between Africa and the Lesser Antilles. The system was upgraded to Tropical Storm Oscar late Wednesday evening.
In this METEOSAT wide shot of the central and eastern Atlantic taken Oct. 5, 2012, Oscar appears in the lower left, Nadine remnants appear northwest of Spain and Portugal and the non-tropical storm is seen in the upper left area.
According to Expert Senior Meteorologist Dan Kottlowski, head of the AccuWeather.com Hurricane Center, "We expect the system to maintain tropical storm strength over the next day or two."
The same large, non-tropical storm moving over the Atlantic that picked up and brought Nadine's reign to an end is also forecast to scoop up Oscar.
The system is likely to turn toward the north and then the northeast, avoiding the Leeward and Windward Islands.
There is a chance this system or its remnants could pass close to the Azores next week.
Giant, Non-Tropical Storm Forming
The large, non-tropical storm moving into position over the Atlantic could make for rough seas over much of the basin as it spins up to its full potential this weekend.
The system was organizing, growing and moving southeastward off of Newfoundland, Canada this week.
The circulation around the monster storm could grow to encompass over 2 million square miles (1,500 by 1,500 miles).
"It is not highly unusual to see big storms like this form over the oceans and it is certainly the time of the year for it," Kottlowski said.
Storms like this may not be as intense as a hurricane, but can bring tropical storm-like winds, rain and rough seas over a much-broader area.
The non-tropical system itself could bring more rough conditions to the Azores than Nadine did the first time and the second time, as well as any impact from Oscar.
The non-tropical storm could eventually extend impact in the form of gusty winds and areas of heavy rain to the United Kingdom and part of Europe, before diminishing during week two of October.
The storm will be centered farther east and will not be as intense as 1991's Halloween Nor'easter, also known as the "Perfect Storm."
This GOES satellite image of the "Perfect Storm" was taken on October 30, 1991.
That system absorbed energy from Hurricane Grace and turned into a real monster along the Atlantic Coast of North America with powerful winds, rough seas and coastal flooding lasting nearly a week.
Darby will continue to deliver locally heavy rain, gusty winds and rough surf to Hawaii into early Monday. But the tropical storm will provide long-term benefits.
Gusty thunderstorms will target the northeastern United States on Monday, but will fail to sweep away the baking heat wave gripping the region.
Dangerous heat will surge northward and send temperatures soaring across the northwestern United States during the final week of July.
Downpours will spread from the lower Mississippi Valley to eastern and central Texas early this week, delivering needed rain but raising the concern for flash flooding.
A renewed risk of severe weather will threaten portions of the north-central United States early this week.
Washington, DC (1991)
A total of 3" of rain from heavy thunderstorms.
Manchester, KY (1992)
A state trooper was stranded in his patrol car after it was submerged by flood waters.
Alexandria, NE (1992)
8.0" of rain with severe flooding.