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Eta expected to make slow trek toward another U.S. landfall

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, Eta expected to make slow trek toward another U.S. landfall, Forex-News, Forex-News



, Eta expected to make slow trek toward another U.S. landfall, Forex-News, Forex-News

Nov. 11 (UPI) — Tropical Storm Eta stalled just off the western tip of Cuba on Tuesday, where it continued to pose flooding threats to southern Florida and Cuba.

AccuWeather meteorologists say Eta is showing signs of strengthening, and it could regain hurricane status before it makes a second landfall in the United States along the Gulf Coast later this week.

In its 4 a.m. EST advisory on Wednesday, the National Hurricane Center said the center of the storm was located 175 miles southwest of Fort Myers, Fla., and 230 miles south-southwest of Tampa. The storm was moving north at 10 mph. It had 70 mph maximum sustained winds.

The tropical storm was lashing the western part of Cuba with heavy rain, gusty winds and rough surf. Rainfall amounts of 2 inches to 4 inches with an AccuWeather Local StormMax of 8 inches are expected into Tuesday night over western Cuba.

As a strong tropical storm, Eta unloaded torrential rain — up to nearly 18 inches — in South Florida Sunday into Monday, causing widespread flooding of streets and low-lying areas in the Miami and Fort Lauderdale, Fla., areas. The storm made its first U.S. landfall with 65-mph winds on Lower Matecumbe Key on Sunday night.

For Cuba, this was the second round of torrential rain from Eta, which cut through the central part of the island during Saturday night and early Sunday.

Satellite images on Tuesday showed potent thunderstorms erupting near the center of the storm. Because of that, forecasters said the storm appeared to be overcoming dry air in the region, which they said points to further strengthening of the system being likely.

Eta had weakened to a 50-mph tropical storm late Monday and remained in status quo as it drifted southwestward over the Gulf of Mexico during Monday night as dry air had encircled the storm and invaded its core. However, maximum sustained winds had increased to 60 mph early Tuesday, and additional strengthening is likely into Wednesday.

“Eta should remain over very warm water and within an environment of low wind shear, both of which favor strengthening [through the middle of the week],” according to AccuWeather’s top hurricane expert, Dan Kottlowski.

“If the core circulation remains intact and if Eta can manage to divorce itself from the dry air on its periphery, it should continue to intensify,” Kottlowski explained. “In fact, it could reach hurricane intensity for a short period of time before the system encounters increasing wind shear later this week.”

If sustained winds reach 74 mph or greater, Eta would be upgraded back to a hurricane. A Category 1 hurricane has sustained winds ranging from 74 mph to 95 mph.

Due to weak steering breezes, Eta will be a slow mover as it continues to churn over Gulf waters.

“A non-tropical storm system moving through the central United States and a westward extension of the Bermuda-Azores high will create a weak steering breeze that should guide Eta slowly northward during the middle and latter part of this week,” Kottlowski said.

The stronger Eta becomes and the longer it remains a strong tropical storm or even a hurricane, the more likely its forward motion will be controlled by southwesterly upper-level winds, which could take it closer to the west coast of Florida. In this case, the storm would be taller and extend higher into the atmosphere, compared to a weak or shallow system.

“The projected complex wind pattern over the storm suggests that an increase in shear will cause the storm to weaken and become more shallow in nature over the northern Gulf of Mexico, and thus be more under the influence of the lower-level winds around the western periphery of the Bermuda-Azores high pressure area,” Kottlowski explained.

Based on the anticipated weakening of Eta, AccuWeather’s current forecast has the system moving northward toward the western Florida Panhandle this weekend as a weakening tropical storm or eventual tropical depression over land along the upper Gulf coast.

Some outer rain bands from Eta will graze the southern and western parts of the Florida Peninsula over the next couple of days, unleashing an additional 1 inch to 2 inches of rainfall. “This can lead to some localized flooding, especially where heavy rain has already fallen from Eta in the past couple of days,” according to Kottlowski.

AccuWeather meteorologists predict that the biggest threat Eta will pose to the United States as it makes a second landfall will be from heavy rainfall and potential flooding. Eta may soak areas that will first pick up rainfall from a non-tropical storm system that will tap into tropical moisture. That weather maker will unload drenching rain from northern Florida to southern Maine on Wednesday into Thursday and could leave the ground saturated in this corridor.

Rain directly associated with Eta is forecast to spread northward by this weekend into parts of the Florida Panhandle, Georgia and perhaps part of Alabama. However, rainfall amounts in these areas of the U.S. will be highly dependent on Eta’s strength.

“If Eta becomes a weak storm, a depression or falls apart, it won’t have the ability to produce any significant rainfall,” Kottlowski explained. “However, if Eta were to maintain a strong circulation, it could bring a few inches and possible flooding to parts of the southeastern U.S.”

Eta could interact with a cold front that is forecast to dip into the region at the end of the week, potentially enhancing rainfall, according to Kottlowski.

The system’s strength will also determine the extent and intensity of winds and storm surge as the system nears the coastline and pushes ashore.

There is also another scenario where Eta could slowly wither away over the Gulf of Mexico late this week to this weekend after an initial period of strengthening. In this case, the storm might not make a second U.S. landfall at all and would instead diminish in a zone of dry air and increasing wind shear.

Forecasters are urging residents in the United States who live along Florida’s west coast to southeastern Louisiana to monitor the progress of Eta due to the potential for flooding rain, strong winds and storm surge late this week and into this weekend.

Record-tying Eta, the 28th named storm of the season, is no longer alone in the basin. Subtropical Storm Theta formed over the central Atlantic late Monday evening, setting a new record for the Atlantic. Theta became the 29th named storm of the 2020 Atlantic hurricane season, beating out 2005 for the most storms to ever develop in a single season. And the two storms together — Eta and Theta — became the latest storm duo to churn in the Atlantic since Nov. 10, 1932, according to Philip Klotzbach, a Colorado State meteorologist.

The Atlantic may not stop with Theta as AccuWeather meteorologists are monitoring the Caribbean for more tropical activity late this week and this weekend. Should an area of disturbed weather entering the Caribbean reach tropical storm status and become the 30th such storm of 2020, it would be named Iota.

AccuWeather meteorologists believe the tropical Atlantic may remain active through the official end of hurricane season, which is Nov. 30, and there is even the possibility of tropical activity in the basin during December.

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, Eta expected to make slow trek toward another U.S. landfall, Forex-News, Forex-News

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, Eta expected to make slow trek toward another U.S. landfall, Forex-News, Forex-News

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