Tornado Rating unknown
6 NNE Otis Washington County
“[Landspout] Spotter reported a brief landspout. Photos of the landspout were provided via email. (BOU)”
— NOAA / SPC storm report
Hail in Otis Jul 4, 2026
Hit 30 days agoBoth radar surfaces caught this storm: NEXRAD logged 30 hail signatures up to 3.75", and the radar-estimated size reached 2.5" aloft. At 3.75" — baseball — this is severe, roof-replacing hail: close to every roof inside the footprint becomes a claim candidate.
A tornado was also reported to the National Weather Service during this storm — see the ground reports below.
Largest hailstone
3.75"
≈ baseball · the largest NEXRAD radar signature Homes in the hail footprint
35
Ground reports
2
1 hail · 1 tornadoThe most severe storm Otis has seen in the last 12 months
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
7.2 /10
- Hail size
- 94 /100
- Homes exposed
- 31 /100
- Ground truth
- 50 /100
Largest hailstone — the top predictor of roof damage.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
How Otis saw the hail — from two instruments
We map this storm two ways: the NEXRAD radar signatures the storm produced overhead, and the radar-estimated size of the hail in the air. The two surfaces don’t have to match — where they diverge is where estimated size aloft ran ahead of, or behind, what the signatures caught.
NEXRAD radar signatures
NEXRAD radar signatures — the point detections the storm produced overhead. A signature is where the radar saw hail, not a confirmed stone on the ground.
Max size
3.75"
Detections
30
Radar-estimated hail size
Maximum hail size as estimated from radar aloft. Treat it as the storm's ceiling — the largest supportable stone — rather than a ground measurement.
Max size
2.5"
Where Jul 4, 2026 sits in Otis's hail record
This was Otis's 7th recorded hail day, arriving 12 days after the Jun 22, 2026 storm. By severity it ranks 1st of the 10 storms we have logged here. Radar put the day's largest stone over Otis at 3.75" — the largest NEXRAD radar signature.
The Jul 4, 2026 convective day was bigger than Otis: the same system put hail over 2,035 other tracked cities, 38 of them in Colorado. Nearest: Akron (11 miles northwest, up to 2.25"); Yuma (17 miles northeast, up to 3.75"); Anton (28 miles south, up to 1.75").
These maps are stills from Otis's Jul 4, 2026 storm. In the Overview app the same surfaces are live — radar updating in real time, radar-estimated hail size as it forms, and NWS spotter reports pinned where they're filed — with a radar replay you can scrub back over any past day.
What people on the ground reported
These are storm reports filed with the National Weather Service and released through the NOAA Storm Prediction Center — public-domain observations from spotters, the public, and NWS surveys. We quote each one exactly as filed.
Tornado reports
1 reportHail reports
1 report Hail size 1.5"
6 SSW Lone Star Washington County
“Photo of melted hail at least 1.25 inch in diameter. Severe damage to corn field. (BOU)”
— NOAA / SPC storm report
Storm forensics
Read from the arrival times and locations of the NOAA ground reports,
not a radar-measured storm track.
How the storm moved
Reports came from Lone Star — beyond Otis itself.
What 3.75" hail means for Otis roofs
Two-inch-plus hail punctures shingles, breaks skylights and windows, and dents anything soft. In the core of a footprint like this, close to every roof is a candidate for an insurance claim. Speed decides who writes those jobs.
What this storm is worth to a roofer
$420K
Potential roof exposure — 35 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage. Claims from this storm can typically be filed until around July 2028 — the window to reach these homeowners while it's still open. Deadlines vary by policy and state.
Track hail over Otis on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Otis storm history — this Jul 4, 2026 storm included — sits underneath. When you're ready, draw this storm's footprint and pull highly accurate homeowner contact information for every address inside it.
Highly accurate contact information starting at $0.23 per address — every contact included. Digital leads cost $15–$40. Start with a 7-day free trial — no credit card required. See pricing
Otis hail history
← All hail in Otis 10 recorded storm days in Otis, CO
Other storms in Otis
Jul 28, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed 
Jul 9, 2026
2" Signatures 2" Estimated 1.25"
No ground reports filed 
Jul 8, 2026
1" Signatures 1" Estimated 0.75"
No ground reports filed 
Jun 22, 2026
2.75" Estimated 2.75"
4
ground reports 
Jun 8, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed 
Jun 1, 2026
1.5" Signatures 1.5" Estimated 1"
No ground reports filed 
May 30, 2026
0.75" Signatures 0.75"
No ground reports filed 
May 16, 2026
1.5" Signatures 1.5" Estimated 0.75"
No ground reports filed 
May 9, 2026
1" Signatures 1" Estimated 0.75"
No ground reports filed
A storm day here is a convective day — it runs from noon to noon
UTC, so late-night hail is grouped with the afternoon storm that
spawned it rather than split across two calendar dates. Ground
reports are public-domain observations from the NOAA Storm
Prediction Center. Radar surfaces are detections and estimates,
not confirmed damage. Last updated Aug 3, 2026.