Ex-Tropical Storm Dorian Showing Signs of Life?

The National Hurricane Center has is giving the remnants of Tropical Storm Dorian a 40% chance of redevelopment over the next 48 hours -- as of 10am Monday morning.

Satellite imagery Sunday into Monday showed an increase of thunderstorm activity associated with the area of low pressure that was once classified Tropical Storm Dorian. That area of interest (now known as 91L) is a couple hundred miles north of Puerto Rico and the Virgin Islands.

While there is an increase in activity, the National Hurricane Center has noted that there is still not a well defined area of circulation associated with it. Lowering surface pressures are typically a sign with intensifying tropical systems -- however, this area has decently high pressure in the grand scheme of tropical activity.

While there is some increased activity with this area of interest, a large area of dry air in the mid-levels of the atmosphere is sitting just to the south and over Puerto Rico. With a broad counterclockwise circulation around this area of low pressure, it creates unfavorable conditions for further strengthening.

According to the National Hurricane Center's 8am discussion: "This system has a medium chance...40%...of becoming a tropical cyclone over the next 48 hours as it moves westward to west-northwestward at 15 to 20mph. [This sytem will] move across the Turks and Caicos Islands and the Bahamas on Tuesday and Wednesday."

Computer Forecast Model Spread for Invest 91L (former Dorian)

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