Severe Storm Surge ● Closed
Coastal Flood Warning issued September 28 at 5:41PM EDT until September 29 at 5:00AM EDT by NWS Key West FL, United States of America
Loading live data… · Marker positions are approximate; severity is labelled in each popup. Sources: USGS, GDACS, NASA EONET, NOAA/NWS, EMSC.
* WHAT...Major saltwater flooding.
* WHERE...Upper Florida Keys, particularly in the sounds, Bay
side of Key Largo.
* WHEN...Until 5 AM EDT Tuesday.
* IMPACTS...Numerous roads may be closed. Low lying property
including homes, businesses, and some critical infrastructure
will be inundated. In the Upper Keys, little relief can be
expected even outside the hours around high tide.
Measurements
| Coordinates | 39.9645, -100.8105 |
|---|---|
| Region | Monroe Upper Keys |
| Location Precision | country |
| Issuing Authority | United States of America — us-noaa-nws-en |
| Cap Urgency | Expected |
| Cap Certainty | Likely |
| Cap Expires | 2026-09-29T01:45:00-04:00 |
Official source
Warnings courtesy of the issuing national meteorological service, via the WMO Alert Hub.
This is an official warning issued by the authority named above. Follow its instructions and those of your local emergency services.
Severity as published by WMO Alert Hub (national weather services).
View original reportThis event as JSON · API and licence
Source updated 21 days ago (Sep 28, 2026 21:42 UTC) · we last heard from WMO Alert Hub (national weather services) 49 seconds ago
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About this location
The agency did not publish coordinates for this warning. The pin is the centre of the country, not the location of the event — read the area name, not the map, for where it applies.
Area as the agency stated it: Monroe Upper Keys
Official authorities in United States
If you are there, these are the bodies whose instructions apply. This site is not an emergency service and does not issue warnings.
More for United States →What to do
Follow the instructions issued by WMO Alert Hub (national weather services) and your local emergency services. The guidance below is background.
Understanding surge zones, evacuation timing, and why storm surge is the deadliest part of a tropical cyclone.
Open Storm Surge Safety Guide →Nearby & related events
Disclaimer: figures are automatic feeds from the named agencies and may be revised. Do not use this page for life-safety decisions — follow official local emergency services.