Hurricane and Storm Risk on Star, Palm & Hibiscus Islands

Zone A: The Designation That Actually Applies Here

Miami-Dade County's hurricane evacuation zone system runs from Zone A (highest storm-surge risk, evacuated earliest and for the widest range of storm categories) through progressively lower-risk zones further inland. Star Island, Palm Island, and Hibiscus Island -- low-lying, man-made, and surrounded on essentially all sides by open Biscayne Bay water -- fall within Zone A, the same designation that applies to Miami Beach's own barrier island and other bay-adjacent, low-elevation coastal areas across the county. That classification isn't a judgment about these specific islands' engineering or seawall quality; it reflects their fundamental geography -- low elevation, full water exposure, and status as some of the first land any storm surge moving up Biscayne Bay from the south would reach.

This page did not confirm the exact current-year Zone A boundary map or whether evacuation-zone designations have shifted for this specific area in recent remapping cycles -- Miami-Dade Emergency Management updates and republishes zone maps periodically, and a buyer or owner here should confirm current zone status directly with the county each hurricane season rather than assuming a designation found in an older source remains accurate.

Hurricane Andrew, 1992: The Storm-Tide Data That Actually Applies to This Stretch of Bay

Hurricane Andrew made landfall as a Category 5 storm near Homestead, in southern Miami-Dade County, on August 24, 1992 -- the last Category 5 storm to strike the continental United States before more recent Gulf Coast storms, with wind gusts reported as high as 177 mph in some areas before measuring instruments failed. Andrew's most catastrophic wind damage occurred in South Dade, well south of these islands, and the storm caused an estimated $26.5 billion in damage (in 1992 dollars, making it the most expensive natural disaster in U.S. history at the time), left more than 250,000 people homeless, and drove roughly 100,000 residents of South Dade to permanently leave the area afterward.

What's directly relevant to Star, Palm, and Hibiscus Islands specifically is a USGS post-storm survey of Andrew's storm-tide elevations across South Florida's coast: that survey documented storm-tide elevations of roughly 4 to 6 feet above sea level in northern Biscayne Bay -- the exact stretch of bay these islands occupy -- with far more extreme readings, as much as 17 feet, recorded near the bay's center, further south and closer to Andrew's landfall track. This page states both numbers honestly: these islands were not at the epicenter of Andrew's worst surge, but a documented 4-to-6-foot storm tide in the immediate area is a real, confirmed exposure figure, not a hypothetical one -- and it came from a storm whose most extreme winds and surge landed elsewhere. A storm tracking more directly over this stretch of bay could plausibly produce a more severe local result than Andrew did here.

Other Documented South Florida Storm Impacts

Hurricane Wilma, in October 2005, knocked out power to millions of customers across South Florida and caused significant wind and flood damage across Miami-Dade County, including in coastal and bay-adjacent areas -- a documented, region-wide impact event rather than a storm remembered primarily for a single catastrophic landfall point the way Andrew is. Hurricane Irma, in September 2017, triggered evacuation orders covering roughly 146,000 Miami-Dade beach-community residents and produced storm-surge flooding along Biscayne Bay-facing areas, per contemporaneous news reporting -- a more recent, direct example of the kind of storm-surge exposure these bay-facing islands face from a hurricane that didn't require a direct Miami-Dade landfall to cause real local flooding.

This page does not claim these islands have taken a direct major-hurricane landfall the way South Dade did with Andrew in 1992 -- available historical records don't support that specific claim, and this page won't overstate it. What the historical record does support is that this exact location sits inside a documented evacuation zone that has recorded real storm-tide flooding from a storm that didn't even hit it directly, and has experienced real regional wind and power-outage impact from storms (Wilma, Irma) that passed through the broader area without a direct Homestead-style landfall.

Hurricane Season Timing and General Florida Exposure

The Atlantic hurricane season runs officially from June 1 through November 30 each year, with the statistical peak of activity typically falling in late August through September -- the same window Hurricane Andrew (August 24) and Hurricane Irma (September) both fell within. That means owners here, like coastal owners across Florida, should plan storm-prep timelines around having wind mitigation, insurance coverage, and an evacuation plan fully in place well before the season's peak months, not scrambling to arrange them as a specific storm approaches, when contractor availability and insurance-binding windows both tighten considerably.

The Single-Access-Point Factor: A Genuinely Different Risk Consideration

Beyond the standard storm-surge and wind exposure any Biscayne Bay-adjacent property faces, these three islands carry a structural risk factor that doesn't apply to a typical open-street coastal neighborhood: each island is reached by exactly one route off the MacArthur Causeway, funneling through a private gate (a documented staffed guardhouse on Star Island; a shared private access bridge for Palm and Hibiscus). That single-access-point structure doesn't change the physical storm-surge or wind risk itself, but it is a real factor in evacuation planning and post-storm access -- both for residents leaving ahead of a storm and for emergency responders, utility crews, and debris-removal contractors needing to reach the islands afterward. This page did not find documented, published guidance specific to how the City of Miami Beach or Miami-Dade Emergency Management coordinates evacuation or post-storm access with these islands' private gate structure, and treats that as a genuine open question worth asking the PHS Home Association, a current resident, or the city's emergency management office directly.

What This Means for a Buyer

None of this is meant to suggest these islands are uniquely dangerous relative to other Biscayne Bay-adjacent Miami-Dade real estate -- they share the same fundamental Zone A, low-elevation, open-water exposure that a large share of South Florida's most desirable waterfront real estate carries, and that exposure is precisely why flood insurance, wind mitigation, and seawall standards are all taken as seriously as they are across this page family. What a buyer here should take away specifically: budget seriously for wind and flood mitigation and insurance (covered in depth on this page's Coastal Insurance page); understand that a documented 4-to-6-foot storm tide has already been recorded in this exact stretch of bay from a storm that didn't even make direct landfall nearby; and build extra lead time into any evacuation plan given the single-gated-access structure unique to these three islands.