Stamford Hail, Wind & Storm Damage Roof Statistics (10-Year NOAA Report)

1. How We Counted NOAA Storm Events for Stamford

The NOAA National Centers for Environmental Information (NCEI) Storm Events Database is the official record of U.S. severe weather, compiled by National Weather Service offices under NWS Instruction 10-1605. We downloaded NOAA's yearly bulk event files for 2016 through 2025 (plus 2026 to date) in November 2026 and filtered every Connecticut record to Stamford's area.

NOAA does not file events by city. It uses two kinds of area, and Stamford sits in both of these:

The planning-region question. In 2022 the Census Bureau adopted Connecticut's nine planning regions as county-equivalents, replacing the eight counties, which ceased to function as governments in 1960. Stamford now falls in the Western Connecticut planning region for Census data. NOAA did not follow: every Connecticut event in its files from 2016 through July 2026 is still filed under the old counties (Fairfield is county 09001) or under NWS forecast zones. So "Fairfield County" remains the right search term in the Storm Events Database, and the ten-year series below is consistent from start to finish.

One caution applies throughout: a NOAA entry is a report, not a measurement of everything that happened. A severe storm can drop hail on a neighborhood that no one reports, and one thunderstorm line can generate a dozen wind reports. That is why the tables below show both the number of reports and the number of separate days.

2. Year-by-Year Storm Table: Fairfield County, 2016-2025

This is the core table of the report. Every number is a count of NOAA Storm Events entries for Fairfield County (hail and thunderstorm wind) or the Northern and Southern Fairfield forecast zones (high wind, snow and ice, tropical storms). Thunderstorm wind shows reports with the number of separate days in brackets; the other columns count days.

Source: NOAA NCEI Storm Events Database bulk files, 2016-2025, accessed November 2026. Snow and ice = Winter Storm, Blizzard, Heavy Snow and Ice Storm events. "All NOAA entries" also includes flash floods, coastal floods, strong wind, winter weather advisories, heat and lightning.

The busiest years were 2018, 2019 and 2020, which together account for 75 of the 129 damaging thunderstorm wind reports. 2018 also had six snow and ice storm days, including two March nor'easters a week apart. The quietest year for wind was 2022, with a single 60 mph thunderstorm report. The high totals for 2018, 2023 and 2024 are partly flash flooding (20, 22 and 19 entries), which matters for basements and roads more than roofs.

3. Stamford Hail History: Every Report Since 2016

Here is the complete list. NOAA enters every hail report of 0.75 inch or more, and only eight were filed anywhere in Fairfield County in ten years. None was located in Stamford, Greenwich, Darien or Norwalk; all but one came from inland towns.

Source: NOAA NCEI Storm Events Database, Fairfield County Hail events, 2016-2025. One more report has been filed since: 1.00-inch hail in Sherman on June 11, 2026.

The honest reading is that Stamford is not hail country. Five severe reports in ten years, spread across five towns, with no recorded damage, is a very different picture from the Plains states where Verisk finds hail hitting a fifth of all roofs in a year. That does not mean hail never damages a roof here; unreported hail is common, and a single storm can matter. But if someone knocks on your door after a summer thunderstorm offering a free "hail inspection," check the NOAA record for that date first. Our Stamford roofer workforce report covers how to verify a contractor's Connecticut registration.

4. Thunderstorm Wind: The Most Frequent Roof Threat

Thunderstorm wind is the event NOAA logs most often in Fairfield County: 158 reports on 56 days from 2016 to 2025, of which 129 reports on 43 days were 52 knots (60 mph) or stronger. Most reports come from downed trees and wires, and NOAA assigns an estimated speed based on the damage.

Because almost every speed is an estimate from fallen trees, these numbers say more about how often damaging wind arrives than about exact speeds over any one roof. For a homeowner, the practical signal is the same: tree limbs and wind are what lift shingles, crack ridge caps and open flashing in this county. If a storm on one of these dates left shingles in the yard, our storm damage roof repair page explains what to document before anything is fixed.

5. High Wind, Nor'easters and Measured Gusts in Stamford

Thunderstorms are not the only source of roof-damaging wind. NOAA files non-thunderstorm wind from nor'easters, coastal lows and strong cold fronts as "High Wind" when gusts reach 58 mph or sustained winds reach 40 mph for an hour. These events cover a whole forecast zone at once and often last for hours, which is why they matter so much to roofs along the Stamford shoreline.

The gusts below were measured at stations in or next to Stamford and are quoted in NOAA's event narratives. For anyone filing or reviewing a wind claim, these are the dates with instrument readings closest to Stamford roofs.

Source: NOAA NCEI Storm Events Database, Southern Fairfield (CTZ009) event narratives.

Eight of the nine Stamford-area gust readings above fell between October and February. That lines up with when roofs are most exposed: shingles are stiffer in the cold, and a nor'easter can push wind from the northeast for a day or more. Loose or lifted shingles found after one of these dates are worth photographing before the next storm.

6. Tropical Storms: Isaias, Henri, Elsa and Ida

Only one tropical storm entry appears in NOAA's Fairfield County records for the decade, but it was the most expensive event of all. The other named storms that people remember show up differently, or not at all.

Henri is the clearest example of why a storm's name is not proof of roof damage. It prompted a federal emergency declaration, but NOAA logged no wind or damage entry for Fairfield County once it passed east. Elsa and Ida were rain events here, recorded as flash floods. Isaias, by contrast, was a wind event, with trees down across the county. If your claim involves a named storm, the NOAA entry for your zone is the record an adjuster is likely to check.

7. Snow, Blizzards and Ice

Winter storms rarely tear roofs off, but heavy wet snow, ice and the ice dams that follow are a steady source of leaks in Stamford. NOAA logged 21 snow and ice storm days in the Fairfield County zones over the decade.

Connecticut's building code requires an ice barrier underlayment on every reroof for exactly this reason, as our Stamford roof cost index explains. Our attic heat and ice dam report covers how ventilation and insulation keep snow from melting and refreezing at the eaves, and the winter roof prep page lists what to check before the first nor'easter.

8. Tornadoes and Flooding

Tornadoes are rare in Fairfield County, but two touched down in the decade. Flooding is far more common, though it threatens basements and roads more than roofs.

Flash flood reports in Stamford itself include Elm Street on April 16, 2018, a stranded school bus with 31 children on Dale Street on September 25, 2018, and water rescues during Elsa and Ida in 2021. Those are not roof events, but heavy rain is when a worn roof, failed flashing or clogged valley shows itself. Our roof leak repair page covers how a leak is traced.

9. Damage Dollars and Disaster Declarations

NOAA attaches a property damage estimate to many entries. These figures are rough (many entries show $0 or nothing at all) and are not insured loss totals, but they show which kinds of storms caused the damage that officials could see.

The billion-dollar list is regional: an event counts for Connecticut if it affected the state at all, and the dollar totals cover every state involved. Still, it shows how often Connecticut sits inside a major multi-state loss: 16 events in nine years, nearly two a year. FEMA declarations, by contrast, mostly fund public repairs; Isaias and the May 2018 storms were public-assistance declarations without individual homeowner aid in Fairfield County, so private roof repairs ran through homeowners insurance.

10. Date-of-Loss Timeline for Homeowners and Adjusters

Storm-damage claims hinge on a date. These are the events in NOAA and FEMA records that are most likely to be cited for roof damage in and around Stamford.

To check a specific date yourself, open the Storm Events Database, choose Connecticut, then select Fairfield County for hail and thunderstorm wind or the Southern Fairfield zone for high wind, winter and tropical events. NOAA's files lag by several months (the 2026 file currently runs through early July), so very recent storms may not appear yet. Our roof insurance claims page explains how that record fits alongside photos and a contractor's inspection.

11. Storms and Roof Lifespan: What the Research Shows

The brief for this report suggested that storms cut real-world shingle life to 12 to 17 years against 20- to 50-year ratings. We could not find that range in any primary study; it circulates on contractor social media posts without a source, so we do not use it. Here is what published references do say.

The IBHS findings come from Gulf Coast hurricanes, not Connecticut, and no study we found measures how much Fairfield County weather shortens a roof's life. What the evidence supports is narrower: shingles lose wind resistance as they age, and frequent wind events like the ones NOAA logs here test that resistance year after year. Our Stamford housing stock and roof age report shows how many local homes are now at or past those lifespans.

12. Roof Condition and Insurer Loss Costs

The brief cited a Verisk finding that roofs in moderate-to-poor condition have 60% higher storm loss costs. Verisk's 2026 U.S. Roof Report release confirms the number with slightly different wording: roofs visibly in moderate-to-poor condition show approximately 60% higher loss costs than roofs in good or excellent condition, based on its Roof Condition Score 2025 baseline data. The release does not limit that figure to storm losses.

For a Stamford homeowner this is the link between the storm record and an insurance bill. Wind events arrive several times a year here, and a roof in poor condition costs more when they do, which is why insurers look at roof age and condition before renewing. A pre-season roof inspection documents the roof's condition before a storm, which also helps separate new damage from old wear after one.

13. Summary Table: Stamford Hail, Wind and Storm Statistics