Hail Report Disclaimer

Last updated: July 2, 2026

HailBrief reports are built from public weather records and radar-derived hail indicators, including NOAA MRMS radar data, NOAA Storm Events, SPC storm reports, NWS Local Storm Reports, and CoCoRaHS volunteer hailpad observations. These datasets can be incomplete, delayed, spatially imprecise, or inconsistent across sources, and their publishers may revise them.

Radar-derived hail size is an estimate, not a direct observation. A radar detection means the radar measured conditions consistent with hail of the stated size near the location; it does not guarantee hail of that size struck a specific structure. Conversely, the absence of a ground observer report does not mean hail did not occur — most hail falls with no trained observer close enough to file a report. Ground confirmations are additional documentation that corroborates radar measurements.

Close-range radar history begins in October 2020. Hail dates before that are documented from official storm reports, which may specify only a nearby area rather than the exact property.

A report should not be used as the sole basis for an insurance decision, damage determination, repair recommendation, or legal position. Pair it with inspection findings, photographs, claim documents, policy review, and professional judgment.