City of Key Colony Beach Official City Website

Weather Brief – Hurricane Idalia – 1200 ET 29 AUG 2023

From the National Weather Service:

Good afternoon,

The latest update to the Hurricane Idalia weather brief for the Florida Keys of Monroe County is attached.  This briefing will post to

  • A Tropical Storm Warning remains in effect for the Dry Tortugas.  A Tropical Storm Watch remains in effect for the Lower Florida Keys, from the west end of the 7 Mile Bridge through Key West.  
  • Occasional thundery squalls with strong tropical storm force wind gusts and poor visibility in heavy downpours.  Some tree and utility line damage may occur, with unsecured lightweight outdoor items blown about. The highest threat for squalls over the Lower Keys and waters to the west this afternoon through Wednesday.  A tornado or two cannot be ruled out, especially during this afternoon.
  • A Coastal Flood Warning is now in effect for the Lower Florida Keys, with a Coastal Flood Advisory now in effect for the Middle Florida Keys.  
  • Coastal flooding up to 2 feet above average high tide (ground level at the immediate coastline) along the ocean-facing side of the Lower and Middle Keys, with a few oceanside locations in Key West possibly reaching 2.5 feet above average high tide.  Coastal flooding near 1 foot above average high tide is possible along the ocean-facing side of the Upper Keys.  After the late afternoon lower low tide, coastal flooding is expected to again increase overnight and peak Wednesday morning.  
  • Hurricane Idalia contains maximum sustained winds near 85 mph and is expected to pass its closest approach about 185 to 190 miles west to west-northwest of Key West over the next few hours, and reach the Gulf coast of Florida Wednesday morning as a major hurricane. 
  • Florida Keys residents and visitors should use caution this afternoon through Wednesday when driving due to windy and squally conditions.  Watch for coastal flooding of streets, especially within low-lying oceanside neighborhoods.

The next briefing is scheduled for 6:00 pm this Tuesday evening.