What wind speed is needed for an insurance claim?
Why speed still comes up
Adjusters check weather data for the date you report. The National Weather Service issues severe thunderstorm warnings for gusts of 58 mph or more, and downbursts and tornadoes can be far stronger. If the nearest reports show light breezes and shingles are missing, the adjuster will look hard at nailing and age.
Shingle wind ratings
- ASTM D3161 Class F: tested at 110 mph.
- ASTM D7158 Class G and Class H: rated for 120 and 150 mph.
These are lab ratings that assume proper installation and tie to manufacturer warranties. Shingles can fail below their rating if they never sealed, were nailed high or have aged. Your insurance covers wind damage whether or not the wind exceeded the rating.
Where to find wind data
- National Weather Service storm reports and local storm reports.
- The NOAA Storm Events Database.
- Nearby airport or weather station gust records.
- Commercial weather reports, which carriers also use.
Making the claim without a big number
Local gusts can be stronger than anything a station recorded miles away. Fresh crease lines, broken seals, blown-off shingles in the yard and damage clustered on the windward side can carry a claim even without a dramatic reading. See wind damage roof claims and date of loss.