The Saffir-Simpson Hurricane Scale is a 1-5 rating based on the hurricane’s present intensity. This is used to give an estimate of the potential property damage and flooding expected along the coast from a hurricane landfall.
Wind speed is the determining factor in the scale, as storm surge values are highly dependent on the slope of the continental shelf and the shape of the coastline in the landfall region. These speeds are one minute averages and not maximum gusts!
| Category | Wind Speed (mph) | Wind Speed (kmph) | Storm Surge (feet) |
|---|---|---|---|
| 1 | 74-95 | 119-153 | 4-5 |
| 2 | 96-110 | 154-177 | 6-8 |
| 3 | 111-129 | 178-208 | 9-12 |
| 4 | 130-156 | 209-251 | 13-18 |
| 5 | >157 | >252 | >18 |
Hurricane Flags
When a hurricane is near and a threat has been determined, the Cayman Islands Hazard Management Department (HMCI) and Government will issue press releases, and there will be four various hurricane flags hung outside of police stations and government buildings.
Listed below are the relevant hurricane flags, along with descriptions of what each flag means. Keep in mind that, even if the All Clear (green) flag is being flown, there is still a possibility for damage to occur due to a storm surge. Please use caution if you see any of these flags, or have been told that a hurricane threat has been issued.
Hurricane Alert
Hurricane threat more than 36 hours away.
Hurricane Watch
Hurricane threat 24 to 36 hours away.
Hurricane Warning
Hurricane conditions expected within 24 hours.
All Clear
The storm has passed, but still use caution.