Guides
Hurricane Photo Storage in Florida: A Pre-Season Prep Checklist
Hurricane photo storage in Florida starts with a waterproof document bag, an evacuation photo archive kit, and a 75°F heat limit before June 1.
What to take away
- Florida hurricane season runs June 1 through November 30. This pre-season prep checklist for hurricane photo storage starts in May, because storm surge, not wind, does most of the damage to a ground-floor archive.
- Above 75°F and 60% relative humidity, mold and dye damage can start within weeks.
- A waterproof document bag and a labeled evacuation photo archive kit are the two items that matter for Florida hurricane prep documents.
- The constraint rules out garages, attics, sheds, and non-climate-controlled storage units for irreplaceable originals.
- Do not swap ziplock bags for a waterproof bag; the seams fail and the bag floats.
What the constraint removes
A Florida archive sits inside a five-month heat and humidity problem. Inland counties often top 95°F in July and August. A garage or attic can reach 110°F, and relative humidity swings between 70% and 90%.
Safe Storage vs Florida Garage
Safe range for prints
- Relative humidity
- 30% to 50%
- Temperature
- 65°F to 70°F
- Light
- dark storage
Florida garage in July
- Relative humidity
- 70% to 90%
- Temperature
- 90°F to 110°F
- Light
- daylight through vents
Hurricane strength starts at 74 mph sustained winds, and a Category 1 can push 4 to 5 feet of surge into a ground-floor closet.
Safe range for prints
- Relative humidity
- 30% to 50%
- Temperature
- 65°F to 70°F
- Light
- dark storage
Florida garage in July
- Relative humidity
- 70% to 90%
- Temperature
- 90°F to 110°F
- Light
- daylight through vents
Those numbers rule out the obvious spots: garage shelves, attic boxes, sheds, and rented storage without climate control. The National Archives keeps storage guidance on temperature, humidity, and light for photographic materials, and the safe ranges above follow it.
Settle your file names before June. The numbering and naming systems compared page covers folder names, dates, and scan order, and saves a weekend later.
The constraint also rules out waiting for a named storm. By then, waterproof bags sell out and roads flood.
Pre-season prep checklist (May 1 to June 1)
A 30-minute plan covers most of the risk. It does not need a climate-controlled room or a conservator on call.
30-Minute Evacuation Photo Plan
- Scan ten key prints at 600 ppi
- Pack originals in acid-free envelopes
- Add waterproof document bag with gasket
- Insert printed card of names and dates
- Place on interior closet shelf 24 inches up
- Keep bag by door June 1 to November 30
Do this before June 1:
Pre-season prep checklist
- Hold the archive below 60% relative humidity and 75°F. A hygrometer next to the shelf shows when the room drifts.
- Put both must-have items in placea waterproof document bag and a labeled evacuation photo archive kit.
Then work the dates:
Pre-season prep checklist
- May 1. Buy the waterproof bag. Choose a 12 by 15 inch roll-top dry bag with a taped seam, the type sold by Ortlieb and Sea to Summit. Expect a typical range of $20 to $45 at a sporting goods store or a marine supplier.
- May 7. Test the bag. Fill it with blank paper, submerge it in a sink for 30 minutes, and check for damp paper.
- May 14. Pack the evacuation kit. Put in one waterproof document bag, dried silica gel packets in a sealed container, and acid-free labels with a marker. Add a scan drive with the newest files and a one-page contact sheet of every box and album.
- May 21. Label every box and album with the file name used in the digital folders. A hardware store covers the labels, the silica gel, and the marker. Cost is driven by the bag and the scan drive.
- May 28. Move the kit to an interior closet, at least 24 inches off the floor, near the door you use to leave.
The National Hurricane Center posts season dates and storm-surge maps that tell you when to move the bag to a car.
For storage that holds one shared condition across prints, negatives, and albums, see choosing one shared condition, which sets one temperature and humidity target for a mixed box.
Hardware-store substitutions that hold up
You can build most of this from a hardware store. A hard-sided cooler with a rubber gasket keeps water out for a short evacuation. Dried silica gel packets control humidity inside a sealed tote.
A roll-top dry bag rated IPX7 keeps paper dry at 1 meter for 30 minutes, which covers a flooded closet floor.
Hardware Store Substitutions
- Acid-free glassine envelopes for loose prints
- Hard-sided cooler with gasket as waterproof case
- Two cloud copies plus encrypted drive
- Printed index taped inside the lid
Substitutions that do not
One substitution fails often enough to name. Do not use ziplock bags or thin vacuum-seal bags as a waterproof document bag for prints. Zipper and corner seams leak under a few inches of water, and the bag floats off the shelf. Vacuum sealing crushes emulsion and traps moisture against the print.
A phone snapshot is also not a substitute for a flatbed scan when you need to read a handwritten caption. Resolution and glare matter more than the camera. If you must use a phone, the settings that matter more than the scanner are distance, light, and a tripod.
When to stop improvising
Stop when you see mold, when a named storm is inside 48 hours, or when the item is a uniform, a tintype, or a diary with ink corrosion.
Mold spreads to paper and books within days. A conservator can freeze-dry wet photographs, but that work is not a home job. A wet album should go into a freezer bag and then a freezer, not a sunny table.
Photographs stuck together should never be pulled apart. Soak them in clean water only if a conservator tells you to, and keep the water cool. Once mold is visible on paper, isolate the item in a sealed bag and get advice before it touches the rest of the collection.
A uniform or textile needs padded hangers and acid-free storage, not a plastic bag. FEMA's protecting important documents and photos steps belong in the same plan.
