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Isaias downgraded to tropical storm, strengthening expected overnight

At 11 p.m. on August 1, NHC still expects Isaias to become a Hurricane overnight.  The storm is now 80 miles from Fort Lauderdale and 105 miles from West Palm Beach.


At 8 p.m. NHC updated to say that Tropical Storm Isaias is expected to strengthen overnight into a hurricane as it approaches the Southeast coast of Florida.

The storm is now 100 miles from Fort Lauderdale.


On Saturday afternoon, Isaias was downgraded to a tropical storm. In the 5 p.m. update from NHC, they expect Isaias to strengthen overnight into a hurricane again before it approaches Florida’s east coast.

The storm is now about 115 miles from Fort Lauderdale.


Hurricane Isaias (pronunciation: ees-ah-EE-ahs) formed Thursday night, and our team is monitoring it about 115 miles south-southeast of Freeport, Grand Bahama Island and about 140 miles southeast of Fort Lauderdale, Florida.

The storm shifted back east overnight, taking SWFL out of the cone yet again. Tropical Storm conditions and heavy rains continue to spread across the Central Bahamas.

As of 2 p.m., Hurricane Isaias is emerging over the straits of Florida and has weakened slightly, with wind speeds now at 75 mph.

Hurricane Isaias slowed down overnight, moving NW at 12 mph, but has continued to slightly weaken throughout the day, now with 75 mph winds. Isaias is expected to approach the southeast coast of Florida tonight and Sunday.

A general northwestward motion with some decrease in forward speed is expected for the next day or so, followed by a turn to the north-northwest by late Sunday. Isaias is forecast to remain a hurricane for the next couple of days and little change in strength is expected through Sunday.

The center of the hurricane will move over the Straits of Florida tonight and approach the southeast coast of Florida early Sunday morning. Isaias is then forecast to move near or along the east coast of the Florida peninsula Sunday and Sunday night.

SWFL IMPACTS

Here in Southwest Florida, our local impacts from Isaias will be relatively minimal. You can expect scattered showers and storms, more clouds for some (especially inland), and breezy conditions. Rainfall totals will range from 0.25″ – 0.75″ for most through Monday night, with isolated amounts over an inch. Sustained wind will range from 15 – 25 mph with gusts 25 – 35 mph, with the highest wind gusts near Lake Okeechobee.

WATCHES AND WARNINGS

New with the 8 p.m. update: 

  • The government of the Bahamas has discontinued the Hurricane Warning for Eleuthera, New Providence, Andros Island, and the Abacos Islands

New with the 5 p.m update:

  • The Tropical Storm Watch has been extended northward from Altamaha Sound Georgia to South Santee River South Carolina.
  • The Hurricane Watch from Hallandale Beach to the south of Boca Raton Florida has been discontinued.

New with the 11 a.m. update:

  • Tropical Storm Watch upgraded to a Tropical Storm Warning for the Volusia/Flagler County line to Ponte Vedra Beach, Florida.
  • Tropical Storm Watch issued from north of Ponte Vedra Beach, Florida to Altamaha Sound, Georgia

A Hurricane Warning is in effect for the following locations:

  • East coast of Florida from Boca Raton to the Volusia/Brevard County Line
  • The Northwestern Bahamas

A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area, typically 36 hours before the anticipated first occurrence of tropical-storm-force wind. In these areas, preparations to protect life and property should be rushed to completion.

Hurricane Watch is in effect for the following locations:

  • Hallendale Beach to south of Boca Raton, Florida

A Hurricane Watch means that hurricane conditions are possible within the watch area.  A watch is typically issued 48 hours before the anticipated first occurrence of tropical-storm-force winds, because conditions that make outside preparations difficult or dangerous.

Tropical Storm Warning is in effect for the following locations:

  • North of Ocean Reef to south of Boca Raton, Florida
  • Lake Okeechobee
  • Flagler/Volusia County Line to Ponte Vedra Beach, Florida

A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area within 36 hours.

Tropical Storm Watch is in effect for the following locations:

  • North of Ponte Vedra Beach, Florida to Altamaha Sound, Georgia

A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area within 36 hours.

Storm Surge Watch is in effect for the following locations:

  • Jupiter Inlet to Ponte Verda Beach

A Storm Surge Watch means there is a possibility of life-threatening inundation, from rising water moving inland from the coastline, in the indicated locations during the next 48 hours.

ELSEWHERE IN THE TROPICS

Elsewhere in the tropics, we are monitoring a tropical wave as well as what NHC has determined as Tropical Depression 10 off the African coast.

Right now, the NHC gives the tropical wave a 60% chance of development over the next five days and TD 10 is forecast to either become a remnant low or dissipate tonight. Long-range models don’t look very impressive right now, but these are areas we definitely need to watch.

TD 10 is now expected to dissipate on Saturday night.

Trust our Weather Authority team to bring you the latest all season long!

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