Hurricane season runs from June 1 through November 30, and South Florida shippers know the pattern: a storm enters the forecast cone, ports and highways tighten up, and freight that was moving smoothly suddenly has nowhere to go. For ordinary cargo that means delay. For hazardous materials it can mean a safety problem, because chemicals, batteries and flammables cannot simply be left on a dock or in a flooded yard.
Build the plan before a storm has a name
The companies that handle storms best decide in advance who makes the call. Write down the trigger points: when you stop accepting new hazmat inbound, when you pre-position inventory, and when you shut down outbound. Assign one person to talk to carriers and one to manage the warehouse, and keep their phone numbers on a printed sheet in case power or internet is lost.
Know what you are storing
Different hazard classes fail in different ways. Flammable liquids need to stay away from ignition sources and electrical equipment that may short out. Corrosives and oxidizers can react if flooding mixes them. Lithium batteries can be damaged by water and heat. Start with an up-to-date inventory by class and location, and revisit the segregation rules before any emergency consolidation, since moving products quickly is when incompatible materials end up together.
Storage decisions
- Move product above likely flood height and away from exterior walls and roll-up doors.
- Verify that containers are closed, labeled and in good condition.
- Keep spill materials accessible and secured against being blocked in.
- Photograph inventory and record quantities for insurance.
If your own facility is not suited to this, a qualified partner can hold freight on your behalf. Read about hazmat warehousing and the local storage requirements to understand what a compliant facility should provide.
Shipping before and after landfall
Expect carriers to embargo or limit pickups in affected areas, so confirm acceptance before you build loads. Documentation stays mandatory in an emergency: the shipping paper and emergency contact information must be accurate, and drivers must hold the proper endorsements. After a storm, routes may change because of closures; our article on Florida hazmat routing restrictions explains why detours are not always simple for placarded loads.
For critical replenishment, such as water treatment chemicals or medical supplies, consider expedited freight with a team that already understands the paperwork.
Communicate early with customers
Tell customers what is realistic. A message that says “Pickup is confirmed, but delivery windows depend on road conditions” is more useful than silence. Keep records of what was tendered and when, because disputes over delays are easier to settle with a timeline.
After the storm
Inspect packages for water damage before shipping them. Damaged or leaking hazmat packaging may need to be overpacked or repacked before a carrier will accept it. Do an incident review: what worked, what did not, and what to change before next season.
This article is general guidance, not a substitute for your emergency management plan or local authority instructions. For help building a seasonal plan, see hazmat consultation.
Frequently asked questions
When does hurricane season start and end in Florida?
The Atlantic hurricane season officially runs from June 1 to November 30.
Can hazmat freight keep moving during a hurricane warning?
Often not. Carriers and ports may embargo or restrict pickups, so confirm acceptance and plan to complete or hold shipments before conditions deteriorate.
What should I do with water-damaged hazmat packages?
Do not tender them as-is. Inspect for leaks and damage, and overpack or repack into compliant packaging before shipping.