Key facts
- Alert
- Coastal Flood Warning (severe)
- Issued by
- National Weather Service, Key West FL
- Areas
- Monroe Upper Keys
- In effect
- until 5:00 AM EDT, Oct 25, 2026
What the National Weather Service says
“Major saltwater flooding.”
NWS Key West FL, Coastal Flood Warning, 10:32 PM EDT Oct 23, 2026 · official alert
“Numerous roads may be closed.”
NWS Key West FL, Coastal Flood Warning, 10:32 PM EDT Oct 23, 2026 · official alert
“If travel is required, do not drive around barricades or through water of unknown depth.”
NWS Key West FL, Coastal Flood Warning, 10:32 PM EDT Oct 23, 2026 · official alert
What to do
Take steps now to protect flood-prone property, as the National Weather Service advises. Move belongings and vehicles away from low-lying areas where you can.
Plan around high tide. Flooding is expected during those times, and numerous roads may be closed.
If you must travel, do not drive around barricades or through water of unknown depth. Just 6 inches of moving water can knock you down, and 1 foot of moving water can sweep a vehicle away.
Move to higher ground if water rises near you.
Context
FEMA flood-insurance records show 27,434 claims in Monroe County, Florida, from 1978 to 2026, as of September 9, 2026. These counts cover only insured properties, so they understate total flood losses.
The county has had five FEMA disaster declarations in recent years for storms, including Hurricane Milton and Hurricane Helene in 2024, Tropical Storm Debby in 2024, Hurricane Ian in 2022 and Hurricane Irma in 2017.
Updates
- The coastal flood warning is no longer in effect.
- The National Weather Service extended the coastal flood warning until 5:00 AM EDT.
- NWS Key West FL issued the coastal flood warning until 5:00 AM EDT.
History here
This county: 27434 flood insurance claims in FEMA's National Flood Insurance Program records since 1978, most recent 2026.
This county: recent federal disaster declarations
- DR-4834 (2024): hurricane milton
- DR-4828 (2024): hurricane helene
- DR-4806 (2024): hurricane debby
- DR-4673 (2022): hurricane ian
- DR-4337 (2017): hurricane irma
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Questions
- Is there a Coastal Flood Warning in the Upper Keys?
- Yes. The National Weather Service in Key West issued a Coastal Flood Warning for the Monroe Upper Keys at 9:07 AM EDT on Friday, October 23, 2026. It runs until 5:00 AM EDT on Saturday.
- What impacts are expected from this coastal flood warning?
- The National Weather Service expects major saltwater flooding. Numerous roads may be closed, and low-lying homes, businesses and some critical infrastructure will be inundated. Some shoreline erosion will occur.
- When will the flooding happen in the Upper Keys?
- Flooding is expected during times of high tide through Saturday morning. The warning is in effect until 5:00 AM EDT on Saturday.
Sources
- NWS Key West FL: Coastal Flood Warning, Oct 23, 2026 weather.gov
- FEMA OpenFEMA: NFIP claims and disaster declarations fema.gov
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