Tropical activity in November takes a sharp nosedive compared to other months of the hurricane season. That being said, it's certainly not unheard of, especially during the first half of the month. A late-season storm named Sean has formed and may impact the island of Bermuda.
Sean had very interesting origins, that weren't entirely tropical in nature. A large area of low pressure sat and swirled over very warm water near the Bahamas for a few days. With time, the upper-level low gradually "burrowed" its way down to the surface. It still wasn't purely tropical at this point, so it was designated as a subtropical storm. This means that it had some tropical characteristics, but it still possessed some characteristics that were non-tropical. After this designation, the system gradually acquired enough tropical characteristics to be classified as a tropical storm. Heavier showers and storms formed around the center of circulation and strengthening took place, with sustained winds reaching up to 65 miles per hour.
As we talk about the intensity forecast for Sean, there is a brief window of opportunity where it may become a minimal hurricane. It will then begin to feel the influence of a cold front that will tug it toward the northeast and move it away from the United States. The tiny island of Bermuda may receive a glancing blow from Sean, with tropical storm force conditions possible late Thursday and Thursday night. As Sean gets absorbed by the front, it will weaken and rapidly dissipate over cooler waters of the Atlantic.
Hurricane season "officially" ends on November 30, but tell that to Mother Nature! In the record-breaking 2005 hurricane season, Tropical Storm Zeta formed in late December and persisted into early January! Talk about a late-season (or would that be an early-season) storm! Any questions about the tropics? Post them in the comments section of the blog!
Until next time,