Gwinnett County homeowners may be surprised to learn that a single afternoon in July 2018 accounts for 78% of all documented hail damage recorded in the county over the decade reviewed in the report. On July 21, 2018, a hailstorm tracking from Dacula to Lawrenceville dropped 2.5-inch hailstones, roughly baseball-sized, causing $4.5 million in damage near Dacula and another $3 million at Lawrenceville Airport.
That one-day total of $7.5 million sits inside a broader 10-year record of 158 documented severe storm events in Gwinnett County between 2015 and 2024. NOAA records cited in the report attribute $9.5 million in documented property damage to those events, which should be understood as officially reported damage rather than a full measure of all private losses.
The storm threat has accelerated sharply in recent years. From 2015 through 2022, Gwinnett County averaged about 8 damaging wind events per year. In 2023 alone, NOAA recorded 38 severe weather events, the most active single year in the dataset, followed by 24 more in 2024. Together, 2023 and 2024 account for 38% of all storm activity in the decade.
The report frames this recent storm activity as especially important for homeowners whose roofs have not been professionally inspected since 2022. A homeowner in that situation may have lived through more than 60 documented storm events without a qualified roof review.
Housing age adds another layer of exposure. According to the U.S. Census Bureau's 2024 American Community Survey, 186,022 homes in Gwinnett County, or 53% of all 351,100 housing units, were built before 2000. Because asphalt shingle roofs commonly carry a lifespan of about 20 to 30 years, many roofs in older housing cohorts may be beyond, near, or dependent on replacement history relative to expected roof lifespan.
Another 86,440 homes built between 2000 and 2009 are entering the final phase of typical asphalt shingle lifespan. The report does not assess individual roof condition, but it identifies housing age as useful context for understanding why repeated hail and wind exposure matters.
HD Pro Roofing, a licensed roofing contractor serving Gwinnett County, notes that many homeowners do not know how many storms their roof has endured. Granule loss from quarter-size hail may be invisible from the ground, and soffit damage after a wind event may go unnoticed.
NOAA narratives confirmed trees falling directly on homes in 43 of the 139 documented wind events reviewed in the report, affecting communities including Lilburn, Duluth, Suwanee, Norcross, and Dacula. The report's central takeaway is that uninspected storm damage can compound quietly, turning manageable roof concerns into larger property-risk issues over time.