Between 22:07 and 22:30 UTC on August 13, 2026, Denver had 7 hail reports within 25 miles, reported from Arapahoe County. The largest stone measured 1.75 in. at 2 W Arapahoe Park, Arapahoe County. The closest report fell 12.0 miles from the Denver city center (Centennial).
The first Denver report is stamped 22:07 UTC: 1.00-inch hail at 1 WNW Foxfield (13.9 mi southeast). The last is 22:30 UTC: 1.00-inch hail at 1 W Arapahoe Park (16.9 mi east-southeast).
The farthest report from the center is 1 W Arapahoe Park (16.9 mi east-southeast): 1.00-inch hail, 4.9 miles beyond the nearest one.
Sizes on Aug 13 run from 1.00 in. at 1 WNW Foxfield to 1.75 in. at 2 W Arapahoe Park around 22:25 UTC.
The Denver event before this one is Tuesday, July 28, 2026, 16 days earlier, with 1 report. Its largest stone measured 1.00 in.; Aug 13 reached 1.75 in.
Where the hail fell
- under 0.75 in
- 0.75 to 0.99
- 1.00 to 1.74
- 1.75 to 2.49
- 2.50 and up
How many reports fell close to the city
| Distance from city center | Reports | Largest hail |
|---|---|---|
| Within 5 miles | 0 | — |
| Within 10 miles | 0 | — |
| Within 25 miles | 7 | 1.75″ |
Reported hail, report by report
| Time (UTC) | Hail size | Location | Distance from city center |
|---|---|---|---|
| 22:25 | 1.75″ | 2 W Arapahoe Park, Arapahoe County | 15.9 mi |
| 22:15 | 1.50″ | 2 NNW Foxfield, Arapahoe County | 13.3 mi |
| 22:15 | 1.50″ | 2 NNW Foxfield, Arapahoe County | 12.8 mi |
| 22:10 | 1.25″ | Centennial, Arapahoe County | 12.0 mi |
| 22:07 | 1.00″ | 1 WNW Foxfield, Arapahoe County | 13.9 mi |
| 22:19 | 1.00″ | 2 W Arapahoe Park, Arapahoe County | 15.5 mi |
| 22:30 | 1.00″ | 1 W Arapahoe Park, Arapahoe County | 16.9 mi |
The rows above come from preliminary Local Storm Reports of the NOAA Storm Prediction Center. Sizes are reported hailstone diameters; times are UTC. Reports can be added or corrected for about a day after the event. Where a report carries no distance, it is measured in a straight line from its coordinates to the city center.
What 1.75 in. hail on August 13, 2026 means for a Denver roof
| Size class | Reports | Share | Largest report in class |
|---|---|---|---|
| 1.00 to 1.74 in | 6 | 86% | 2 NNW Foxfield, 22:15 UTC |
| 1.75 to 2.49 in | 1 | 14% | 2 W Arapahoe Park, 22:25 UTC |
7 of the 7 sized Denver reports reached 1 in. The 1.75 in. stone at 2 W Arapahoe Park, Arapahoe County falls in the 1.75 to 2.49 in class; on August 13, 2026 that is golf ball to hen egg territory for Denver.
What spotters wrote
1.00″, 1 WNW Foxfield at 22:07 UTC: 2 to 3 feet deep hail drifts. Hail accumulation up to 3 inches in yards with most leaves stripped from trees. Quarter size hail found approximately an hour after hail f
1.00″, 2 W Arapahoe Park at 22:19 UTC: Also reported dents on metal roof vents... and a significant amount of leaves stripped from trees.
How this day compares with other hail days
Denver has 6 hail days in our NOAA log; by largest hailstone, August 13, 2026 ranks #1 of them. Logged days closest in time to August 13, 2026:
- August 26: 1 report, largest 1.00″
- August 22: 3 reports, largest 1.50″
- August 15: 1 report, largest 1.75″
The same storm in nearby cities
On August 13 the log holds 5 matched cities in 3 states; Denver has no neighbour within 220 miles, so its hail stood alone on August 13.
Where the claim clocks stand for the Denver storm
Denver: that storm was 73 days ago. Rows marked passed are not cut-off dates on their own; the only legal limits are the ones tagged statute. For Denver the photo window, the inspection and the target filing date (Thu, Aug 20) are already behind us.
- 60 days run from the proof of loss you file, not from Aug 13. Statute text
- 3 years, counted from a different start point and not from Denver's storm day. Statute text
Denver: insurer clocks counted from a claim filed Thu, Aug 20; working-day clocks skip weekends. Claim deadlines for Denver, CO. Not legal advice; your own reporting deadline comes from your policy.
August 13 against the Denver County August record
Denver's August 13 log shows 1.75 in. hail. The record August in Denver County since 2014 is 2023, with 1 reports and a largest stone of 1.00 in.
Hail history near Denver: not the first
Denver’s county has logged 124 hail events since 2017; if this one leads to a replacement, ask about Class 4 impact-resistant shingles, which some insurers discount. Check your own address on the hail risk lookup.
See all roofing contractors in Denver, CO
What the sizes reported on August 13, 2026 can do to a roof
| Size class in Denver's reports | Looks like | Reports | What that size can do |
|---|---|---|---|
| 1.00 to 1.74 in | quarter to ping-pong ball | 6 | Shingles can bruise and shed granules, often unseen from the ground. |
| 1.75 to 2.49 in | golf ball to hen egg | 1 | Can fracture older shingles and dent vents, flashing and gutters. |
Size classes follow the SPC report diameters; the damage wording is general, not a finding about any one roof.
2026 in the Denver County hail record
NOAA's county table already holds 13 hail reports for Denver County in 2026 through June 2026, with a largest stone of 1.75 in. That is more than 6 of the 9 full years before it. The busiest full year in the table is 2023 with 36 reports.
| Year | NOAA hail reports, Denver County | Largest stone |
|---|---|---|
| 2017 | 9 | 2.50″ |
| 2018 | 4 | 2.00″ |
| 2019 | 17 | 1.50″ |
| 2020 | 1 | 1.00″ |
| 2021 | 9 | 1.00″ |
| 2022 | 1 | 0.75″ |
| 2023 | 36 | 1.75″ |
| 2024 | 33 | 2.75″ |
| 2025 | 1 | 1.00″ |
| 2026 (through June 2026) | 13 | 1.75″ |
This date among 2026's matched hail days
In 2026 the feed holds 6 matched hail days for Denver. Ranked by largest stone, then report count, August 13, 2026 is #1 of them.
| Date | City | Reports | Largest hail |
|---|---|---|---|
| Aug 13 | Denver | 7 | 1.75″ |
| Aug 15 | Denver | 1 | 1.75″ |
| Aug 22 | Denver | 3 | 1.50″ |
| Jul 28 | Denver | 1 | 1.00″ |
| Aug 14 | Denver | 1 | 1.00″ |
| Aug 26 | Denver | 1 | 1.00″ |
Ranked by largest stone, then by report count. Only dates the SPC feed matched to a covered city are counted.
The week after August 13, 2026
After Thu, Aug 13, the feed logged 2 hail reports on 2 of the next 7 days in Denver and the cities within 100 miles. The first came on Fri, Aug 14.
| Day | Reports in Denver | Other cities within 100 miles | Largest hail |
|---|---|---|---|
| Fri, Aug 14 | 1 | 0 cities, 0 reports | 1.00″ |
| Sat, Aug 15 | 1 | 0 cities, 0 reports | 1.75″ |
Questions about this storm
Denver, August 13, 2026: how big was the hail?
At 2 W Arapahoe Park, Arapahoe County, the largest SPC report was 1.75 in.
Denver, August 13, 2026: how close did the hail fall?
The nearest report sat 12.0 miles from the city center and the farthest 16.9 miles. Within 10 miles: 0 of 7 reports.
Denver, August 13, 2026: how long did the hail last?
Reports are stamped from 22:07 to 22:30 UTC, a window of 23 minutes. Late reports can still be added for about a day.
Denver, August 13, 2026: was this the worst hail day on record?
Denver has 6 logged hail days; August 13, 2026 ranks #1 for Denver, at 1.75 in. The best other day reached 1.75 in.
Do I need an inspection if my roof looks fine?
Often, yes. Hail bruises and granule loss are hard to see from the ground. A dated inspection scope is what ties damage to this storm rather than to ordinary wear.
What did the feed log near Denver in the week after August 13, 2026?
After Thu, Aug 13, the feed logged 2 hail reports on 2 of the next 7 days in Denver and the cities within 100 miles. The first came on Fri, Aug 14.
Was 2026 a busy hail year in Denver County?
NOAA's county table already holds 13 hail reports for Denver County in 2026 through June 2026, with a largest stone of 1.75 in. That is more than 6 of the 9 full years before it. The busiest full year in the table is 2023 with 36 reports.
About these numbers
Every figure on this page comes from the NOAA Storm Prediction Center Local Storm Reports file, matched to reports within 25 miles of the city center. Reports are preliminary: they come from trained spotters, emergency managers, the public and mPING app submissions, and sizes are often estimated against a coin or ball. We do not adjust them. A roofer tagged Verified holds a license or registration we confirmed in a public registry. That tag says nothing about coverage, so ask whoever you pick for a current certificate of insurance before signing.
More Resources
All recent local hail · Roofing contractors · Insurance claim guide · Roof replacement costs here · Emergency roof repair