The first 24–72 hours
Stay inside, away from windows, until 30 minutes after the last thunder
Safety Hail falls from thunderstorms, and the lightning that comes with it is the greater danger. The National Weather Service says to stay away from windows and doors and off porches while the storm is overhead, and to wait at least 30 minutes after the last sound of thunder before going outside. Do not go to a window to film the hail. Note the time it started and the time it stopped from wherever you are; both go into your timeline.[7]
Measure and photograph the stones before they melt
Once the 30 minutes after the last thunder have passed, pick up several of the largest stones you can find, put them on a flat surface next to a ruler, a tape measure or a coin, and photograph them from above. The Storm Prediction Center asks for measurement, not estimation, of hail size, and the same discipline makes your own record credible. Then put a few stones in a freezer bag, write the date, time and address on the bag and freeze it.[1]
Photograph the spatter marks on hard surfaces within hours
Hail hitting a dry driveway, deck, patio or car cover leaves wet circular marks that vanish as the surface dries. After the wait, photograph them wide, so the pattern across the surface is visible, then close with a coin in the frame. These are the fastest fading evidence you have of how dense the fall was.
Write down when it started, when it stopped and where you were
Record the start and end time as closely as you know them, the address, and where in the house you were. If you were away, write “unknown” for the times and note when you returned and found the marks. The storm reports you look up later are listed by time, so your own times need to be honest.[2]
Do not climb onto the roof
Safety Photograph the roof from the ground, from upstairs windows and from a neighbour’s vantage point if they allow it. OSHA describes falls as among the most common causes of serious work related injuries and deaths, and requires fall protection from four feet in general industry workplaces. A wet roof after a hailstorm is exactly that hazard. Leave the close inspection to a roofer with the right equipment and see the roof damage guide.[4]
What to photograph and record, in the order it disappears
Hail damage is unusual because its best evidence is on the ground, not on the house. The stones themselves, the spatter they leave and the dents they put into soft metal each fade at a different speed. The table below lists each piece of evidence, how long it lasts and how to capture it, so you can spend the first hour on what will be gone by the evening.
| Evidence | How long it lasts | How to capture it |
|---|---|---|
| Hailstones on the ground | Minutes to a few hours, depending on the temperature | Photo from above next to a ruler or coin, then a few stones bagged, dated and frozen |
| Spatter marks on driveway, deck, patio | Until the surface dries, often the same day | Wide shot of the pattern, then close-ups with a coin in frame |
| Dents in gutters, downspouts, AC condenser fins, mailbox, grill lid | Months to years; they weather slowly | Photo of each surface square on with a coin for scale, one caption per surface |
| Torn window screens, cracked skylights, broken glass | Until repaired | Photo of each screen or pane from inside and outside, with the room name in the caption |
| Roof surface: displaced granules, bruised or cracked shingles | Until repaired, but hard to see from the ground | Photos from the ground and windows with the slope named, then a roofer’s written inspection |
| Vehicle dents | Until repaired | Photos of each panel in raking light, kept in a separate vehicle log |
Measuring hail size honestly
The Storm Prediction Center encourages measurement, not estimation, of hail size, and publishes a table that relates diameter in inches to everyday objects. Use it in two ways. If you have a ruler, measure the largest stones and write the size in inches. If you only have your memory or a photo without a scale, pick the closest object from the table and write that object, not a number you did not measure.[1]
| Diameter (inches) | Object |
|---|---|
| 0.50 | Marble or moth ball |
| 0.75 | Penny |
| 0.88 | Nickel |
| 1.00 | Quarter |
| 1.25 | Half dollar |
| 1.50 | Walnut or ping pong ball |
| 1.75 | Golf ball |
| 2.00 | Hen egg |
| 2.50 | Tennis ball |
| 2.75 | Baseball |
| 3.00 | Tea cup |
| 4.00 | Softball |
| 4.50 | Grapefruit |
Record the largest size you measured and the typical size separately; a fall of mostly pea-sized hail with a handful of larger stones is a different event from a uniform fall of large stones, and a reader needs to know which you saw. The NWS page “Estimating Winds and Hail Size in Thunderstorms” is the spotter reference for both hail and wind; its wind table pairs speeds with the damage each produces, which helps you record wind damage that arrived with the hail as a separate fact.[3]
Witness marks: the dents that date the storm
Roofers use the phrase “witness marks” for the dents that hail leaves in surfaces softer than a shingle. Gutters, downspouts, the fins on an air conditioner condenser, window screens, a mailbox, a grill lid, a metal shed roof and painted wood trim all take a dent that a shingle may hide. Those dents matter because they are consistent with each other: hail of one size on one day leaves dents of one size, on the sides of the house that faced the storm, and does not leave them on the sheltered sides.
- Photograph each soft-metal surface square on, with a coin resting in or next to a dent for scale, and name the surface and the side of the house in the caption.
- Photograph the sheltered sides too. A downspout with no dents on the lee side is as much a record as a dented one on the windward side.
- Photograph the AC condenser fins from the top and each side; do not push on them or try to straighten them before the photos are taken.
Witness marks weather slowly, so they survive even if you could not photograph the stones. Take the photos in the first days anyway: repairs, painting and a new gutter all remove them.
Build the timeline and cross-check it with official storm reports
The Storm Prediction Center publishes preliminary storm reports with tornado, hail and wind entries by time, size, location, county and state. Past dates are reached by date in YYMMDD form, the data goes back to June 1999, and each day’s reports run from 1200 UTC to 1159 UTC the next day, so a late-evening Florida storm may appear under the following day’s page. Find the report page for your storm, look for hail entries in your county, and take a screenshot with the date visible. The reports are preliminary and may not list your street; treat them as context for your own timeline, not as a replacement for it.[2]
| Date and time | Observed | Recorded | Acted |
|---|---|---|---|
| 2026-06-03 16:20 | Hail began, mostly quarter size, a few larger | Video through kitchen window with time spoken | Stayed indoors |
| 2026-06-03 16:32 | Hail stopped, rain continued | Note of end time | Nothing |
| 2026-06-03 17:05 | Stones on patio, largest 1.75 inches | Ruler photos, four stones bagged and frozen | Nothing |
| 2026-06-03 17:30 | Spatter on driveway, dents in north gutter and AC fins | Wide and coin-scale photos per surface | Nothing |
| 2026-06-04 09:00 | SPC report page shows hail entries for the county | Screenshot with URL and date | Reported the damage to the insurer, name and time noted |
| 2026-06-08 10:00 | Roofer inspected from a ladder | Written report, slope names, invoice number | Nothing repaired yet |
Inventory, vehicles and receipts
The hail inventory is short compared with a flood or a fire, and that is why it is easy to get wrong. List each damaged exterior element as its own row: each gutter run, each downspout, the condenser, each screen, each skylight, each named roof slope. Where a manufacturer, model or installation date is known, record it; where it is not, write “unknown”. Florida DFS recommends an itemised list with costs, purchase dates and serial numbers, and receipts for big-ticket items, which for hail usually means the air conditioner and any recent roof work.[5]
- Keep vehicle dents in a separate log with their own photos. A car is documented for the same storm, but it is a different property with a different insurer, and mixing it into the house inventory confuses both records.
- Keep any invoice for a previous roof replacement or gutter installation; it shows the age of the surface that was hit.
- Log tarp, screen and glass receipts as paid receipts, and roofing quotes as estimates, in separate rows.
Florida DFS also tells storm-affected homeowners to keep all receipts, including temporary repairs. Whether a cost is reimbursed is a policy question ClaimPrep does not answer; the receipt is still part of the record.[5]
Keeping the evidence
Hail evidence is mostly photographs and a bag in the freezer, so the risk is losing files rather than losing objects. Keep the originals with their metadata, and copy them somewhere off the phone the same day. Name each file or caption with the surface, the side of the house and the date so a reader can tell the north gutter from the south one.
- Leave the bagged stones in the freezer until whoever inspects the damage has seen the photos; the photos with a ruler are the primary record, the stones are a backup.
- Save the storm report screenshot with the page URL and the date it was taken written in the file name or caption.
- Keep the roofer’s written inspection with its date and the slope names it uses, and use the same slope names in your own captions.
What to document
| Item | Why it matters | Where it appears in your report |
|---|---|---|
| Largest hailstones photographed next to a ruler or coin, then a few bagged, dated and frozen | The Storm Prediction Center asks for measurement, not estimation, of hail size | Documented Details |
| Spatter marks on the driveway, deck or patio photographed wide and close while still wet | They dry away the same day and show how dense the fall was | Photo Documentation |
| Soft-metal witness marks on gutters, downspouts, AC fins and mailbox photographed with a coin for scale | Datable dents that survive after the stones have melted | Detailed Documentation |
| Window screens, skylights and glass photographed from inside and outside with the room named | Records the openings hit on the sides that faced the storm | Affected Areas |
| Roof photographed from the ground and from windows with each slope named, no climbing | Fixes the roof condition on the day without a fall risk | Photo Documentation |
| Storm Prediction Center report page screenshot for the date and county, with URL | Official preliminary hail reports that anchor the date and time | Damage Summary |
| Time the hail started and stopped, with where you were, written the same day | Storm reports are listed by time and your entry must be honest | Timeline of Events |
| Vehicle dents photographed in raking light and kept in a separate log | Same storm, different property; the two records stay clean | Additional Documentation |
| AC condenser model plate and previous roof or gutter invoices added to the inventory | Shows the age and identity of the surfaces that were hit | Documented Details |
| Tarp, screen and glass purchases logged as paid receipts, roofing quotes as estimates | Temporary repairs are receipts; quotes are not payments | Mitigation Actions |
What your documentation report will contain
A ClaimPrep documentation report organises what you recorded into these sections. It records facts; it does not value your loss or interpret your policy.
Claim Summary Property Details Damage Summary Timeline of Events Affected Areas Detailed Documentation Mitigation Actions Documented Details Additional Documentation Photo Documentation
See a sample documentation report (a fictional example) or read how ClaimPrep works.
Who to contact
- Your insurance company or agent
- They receive notice of the loss and explain their own process; write the date, the time and the name of the person you spoke to into your timeline.
- Florida DFS Insurance Consumer Helpline, 1-877-MY-FL-CFO (1-877-693-5236), out of state (850) 413-3089
- State consumer help for insurance questions, available 8:00 AM to 5:00 PM EST, Monday through Friday; have your company name, policy number and agent name ready.[6]
- A licensed roofing contractor
- They inspect the roof surface that you cannot safely see from the ground; ask for a written, dated report that names each slope, and log it as an estimate or an inspection, not a payment.
- Your vehicle insurer, if a car was dented
- A vehicle is a separate property with its own record; they will tell you what they need for the car, and your separate vehicle log is where that goes.
Common documentation mistakes
- Estimating the hail size from memory as “golf ball” without a photo or a measurement
- Photograph the stones next to a ruler or a coin while they exist, and write the measured size; use the SPC object table only for stones you actually saw.
- Photographing the gutters at noon and finding no dents in the pictures
- Shoot in low, angled light or with a flashlight held to one side so the dents cast shadows, with a coin in frame.
- Climbing onto a wet roof to photograph shingles
- Photograph from the ground and from windows, name the slopes, and leave the surface inspection to a roofer with fall protection.
- Adding the car’s dents to the house inventory
- Keep a separate vehicle log with its own photos; the storm is the same, the property and the insurer are not.
- Changing your own start time to match the storm report
- Write both times side by side; the reports are preliminary and cover a whole county, your entry is what you observed.
Questions
How do I record the size of the hail that fell?
Put the largest stones on a flat surface next to a ruler, a tape measure or a coin and photograph them from above, then write the measured diameter in inches. The Storm Prediction Center asks for measurement, not estimation, and its size table relates diameters to objects such as a quarter at 1.00 inch or a golf ball at 1.75 inches; use an object name only when you saw the stones but could not measure them. Freeze a few stones in a bag marked with the date, time and address as a backup.[1]
What are witness marks and why photograph them?
Witness marks are the dents hail leaves in surfaces softer than a shingle: gutters, downspouts, air conditioner fins, window screens, a mailbox or a grill lid. They weather slowly, so they remain after the stones have melted and the spatter has dried, and they are consistent with each other in size and in which sides of the house they appear on. Photograph each surface square on with a coin for scale, in low angled light, and photograph the sheltered sides too.
Where do I find an official record that hail fell that day?
The NOAA Storm Prediction Center publishes preliminary storm reports with hail entries listed by time, size, location, county and state. Past dates are reached by date in YYMMDD form, the data goes back to June 1999, and each day runs from 1200 UTC to 1159 UTC the next day, so an evening storm may sit under the next day’s page. Screenshot the page with the date visible and keep it as context next to your own timeline; it is preliminary and county-wide, not a record of your street.[2]
Should I include my car’s hail dents in the house report?
Keep them in a separate vehicle log. Photograph the car’s panels in raking light on the same day, because the dents corroborate that hail of a given size fell at your address, but a car is a different property with a different insurer and its record should not be mixed into the home inventory. Note in the house timeline that the car was dented in the same storm and where its log is kept.
Sources
- Hail Size as Related to Objects, NOAA/NWS Storm Prediction Center. Accessed The diameter-to-object table and the request for measurement, not estimation, of hail size.
- Storm Prediction Center Storm Reports, NOAA/NWS Storm Prediction Center. Accessed Preliminary hail, wind and tornado reports by time, size, location and county; past dates by YYMMDD; reports run 1200 UTC to 1159 UTC the next day.
- Estimating Winds and Hail Size in Thunderstorms, NOAA/NWS Burlington. Accessed Spotter reference pairing wind speeds with the damage each produces.
- Fall Protection: Overview, Occupational Safety and Health Administration. Accessed Falls among the most common causes of serious work related injuries and deaths; fall protection required from four feet in general industry.
- Hurricane Ready, Florida Department of Financial Services. Accessed Itemised list with costs, purchase dates and serial numbers; keep all receipts.
- Hurricane Resources, Florida Department of Financial Services, Consumer Services. Accessed Insurance Consumer Helpline number, hours and what to have ready before calling.
- Lightning Tips, NOAA National Weather Service. Accessed Stay away from windows and doors and off porches during a thunderstorm; wait at least 30 minutes after the last sound of thunder before going outside.
How this guide was produced. Written and maintained by ClaimPrep’s editorial team from the sources listed above. Drafting used AI writing assistance; a person checked every statement against the cited sources before publication and at each review date. ClaimPrep sells the documentation service linked on this page. Documentation guidance only, not legal, insurance, public-adjusting or financial advice. Found an error? Read the corrections policy.