Longmont area, July 28, 2026: spotters filed 1 hail report in Boulder County, at 20:04 UTC. Nearest to Longmont was a report 9.9 miles out (Lyons). The largest stone measured 1.00 in. at Lyons, Boulder County.
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 | 1 | 1.00″ |
| Within 25 miles | 1 | 1.00″ |
Reported hail, report by report
| Time (UTC) | Hail size | Location | Distance from city center |
|---|---|---|---|
| 20:04 | 1.00″ | Lyons, Boulder County | 9.9 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 1.00 in. hail on July 28, 2026 means for a Longmont roof
1 of the 1 sized Longmont reports reached 1 in. The 1.00 in. stone at Lyons, Boulder County falls in the 1.00 to 1.74 in class; on July 28, 2026 that is quarter to ping-pong ball territory for Longmont.
What spotters wrote
1.00″, Lyons at 20:04 UTC: Delayed report via CoCoRaHS. Hail lasted approximately 12 minutes and dented some cars.
How this day compares with other hail days
Longmont has 2 hail days in our NOAA log; by largest hailstone, July 28, 2026 ranks #1 of them. Logged days closest in time to July 28, 2026:
- August 22: 1 report, largest 1.00″
The same storm in nearby cities
July 28: 3 cities in 2 states drew SPC hail reports. Denver, CO lies closest to Longmont, 30 miles south-southeast, with 1 report, largest 1.00 in.
| City | Distance | Reports | Largest hail |
|---|---|---|---|
| Denver, CO | 30 mi south-southeast | 1 | 1.00″ |
1 nearest to Longmont, within 220 miles; each link opens that city’s list for July 28, 2026.
Where the claim clocks stand for the Longmont storm
Longmont: that storm was 89 days ago. Rows marked passed are not cut-off dates on their own; the only legal limits are the ones tagged statute. For Longmont the photo window, the inspection and the target filing date (Tue, Aug 4) are already behind us.
- The Longmont clock starts at your proof of loss, not on Jul 28: 60 days. Statute text
- For Longmont this period is 3 years from a different start point, so no date is shown. Statute text
Longmont: insurer clocks counted from a claim filed Tue, Aug 4; working-day clocks skip weekends. Claim deadlines for Longmont, CO. Not legal advice; your own reporting deadline comes from your policy.
July 28 against the Boulder County July record
Longmont's July 28 log shows 1.00 in. hail. The record July in Boulder County since 2014 is 2019, with 27 reports and a largest stone of 2.50 in.
Hail history near Longmont: not the first
Longmont’s county has logged 130 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 Longmont, CO
What the sizes reported on July 28, 2026 can do to a roof
| Size class in Longmont's reports | Looks like | Reports | What that size can do |
|---|---|---|---|
| 1.00 to 1.74 in | quarter to ping-pong ball | 1 | Shingles can bruise and shed granules, often unseen from the ground. |
Size classes follow the SPC report diameters; the damage wording is general, not a finding about any one roof.
This date among 2026's matched hail days
In 2026 the feed holds 2 matched hail days in Longmont's county, from 1 cities. Ranked by largest stone, then report count, July 28, 2026 is #1 of them, level with 1 other day on both counts.
| Date | City | Reports | Largest hail |
|---|---|---|---|
| Jul 28 | Longmont | 1 | 1.00″ |
| Aug 22 | Longmont | 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 July 28, 2026
The SPC feed matched no hail report to Longmont or to the 8 other covered cities within 100 miles on any of the 7 days after Tue, Jul 28, through Tue, Aug 4.
Questions about this storm
Longmont, July 28, 2026: how big was the hail?
At Lyons, Boulder County, the largest SPC report was 1.00 in.
Longmont, July 28, 2026: how close did the hail fall?
The nearest report sat 9.9 miles from the city center.
Longmont, July 28, 2026: was this the worst hail day on record?
Longmont has 2 logged hail days; July 28, 2026 ranks #1 for Longmont, at 1.00 in. The best other day reached 1.00 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.
Did the same storm hit towns near Longmont on July 28, 2026?
The feed shows hail reports that day in Denver, CO (30 miles south-southeast, 1 report, up to 1.00 in.).
What did the feed log near Longmont in the week after July 28, 2026?
The SPC feed matched no hail report to Longmont or to the 8 other covered cities within 100 miles on any of the 7 days after Tue, Jul 28, through Tue, Aug 4.
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