Hail size 1"
Franktown Douglas County
“Spotter id: d333. (BOU)”
— NOAA / SPC storm report
/ Storm field report · Douglas
Hail in Castle Rock · Jun 3, 2026
NEXRAD logged 25 hail signatures up to 1.75"; the estimated-size surface reached 1.25" aloft. Open it on the live map to see the swath over the streets.
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Peak hail signal 1.75" ≈ golf ball · the largest NEXRAD radar signature
Homes in the hail footprint 3,753
Ground reports 1 1 hail
Radar surfaces 2 NEXRAD + estimated size
Convective day · Jun 3, 2026 · noon–noon UTC
Severity
The most severe storm Castle Rock has seen in the last 12 months
Composite score · 4.7 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
4.7 /10
- Peak hail signal
- 44 /100
- Homes exposed
- 71 /100
- Ground truth
- 17 /100
Largest radar-indicated size — a signal of damage potential, not confirmation.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
Evidence / storm surfaces
How Castle Rock saw the hail — from two instruments
Jun 3, 2026 · Castle Rock, CO
Two instruments, one storm: NEXRAD logs the point signatures it detected overhead, while the estimated-size surface models how large the hail aloft could have grown. Agreement between them is not guaranteed — the gaps are where the model ran ahead of, or behind, the detections.
NEXRAD radar signatures Surface resolved
Radar signature field NEXRAD's hail signatures for this storm: the spots the radar detected from above. A detection overhead is not the same thing as a confirmed stone below.
Max size
1.75"
Detections
25
Radar-estimated hail size Surface resolved
Estimated size field Radar-estimated maximum hail size across the swath, modeled from radar aloft. It reflects the biggest stone the storm could support, which may differ from what actually fell.
Max size
1.25"
The storm in context
Where Jun 3, 2026 sits in Castle Rock's hail record.
This was Castle Rock's 4th recorded hail day, arriving 2 days after the Jun 1, 2026 storm. By severity it ranks 1st of the 14 storms we have logged here. Radar put the day's largest stone over Castle Rock at 1.75" — the largest NEXRAD radar signature.
The Jun 3, 2026 convective day was bigger than Castle Rock: the same system put hail over 274 other tracked cities, 20 of them in Colorado. Nearest: Franktown (13 miles southeast, up to 1.75"); Sedalia (17 miles southwest, up to 0.75"); Pine (21 miles west, up to 1").
These maps are stills. In the app this date is one of 14 Castle Rock storm dates on a live map — both surfaces, the reports, and a replay — and the same map is where you draw the swath. This page rebuilds nightly.
Ground reports
What people on the ground reported
1 report filed with the NWS
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.
Hail reports
1 reportStorm forensics
How the storm moved
Timing and place names from NOAA ground reports
Read from the arrival times and locations of the NOAA ground reports, not a radar-measured storm track.
Reports came from Franktown — beyond Castle Rock itself.
High damage potential
What 1.75" hail means for Castle Rock roofs.
Hail around an inch and a half is capable of cracking shingles, stripping granules, and denting gutters, vents, and siding. Risk is usually greatest near the strongest radar signal, but property-level damage still requires an on-site inspection.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
3,753 homes × $12,000 avg. claim
Potential roof exposure
$45M
Potential roof exposure — 3,753 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 19 jobs
- Illustrative work
- ~$285K
Close just 0.5% of the 3,753 homes in this footprint at the average $15,000 roof job. Illustrative math, not a projection — your results depend on your outreach and how the market responds.
Claim window
June 2028
Claims from this storm can typically be filed until around June 2028 — the window to reach these homeowners while it's still open. Deadlines vary by policy and state.
Names and phones for every home in the footprint: at most $788 on top of the $150 plan.
Castle Rock hail history
Other storms in Castle Rock.
14 recorded storm days in Castle Rock, CO
Estimated-size surface Storm date Castle Rock / CO
Sep 6, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Castle Rock / CO
Aug 26, 2026
1" Estimated 1"
2 ground reports Open report →
Estimated-size surface Storm date Castle Rock / CO
Aug 22, 2026
0.75" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Castle Rock / CO
Aug 15, 2026
1.25" Estimated 1.25"
1 ground report Open report →
Estimated-size surface Storm date Castle Rock / CO
Aug 14, 2026
0.75" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Castle Rock / CO
Jul 29, 2026
1.25" Signatures 1.25" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Castle Rock / CO
Jul 28, 2026
1.75" Signatures 1.75" Estimated 1"
No ground reports filed Open report →
NEXRAD surface Storm date Castle Rock / CO
Jul 25, 2026
0.75" Signatures 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Castle Rock / CO
Jun 26, 2026
1" Signatures 1"
No ground reports filed Open report →
Estimated-size surface Storm date Castle Rock / CO
Jun 8, 2026
1" Estimated 1"
2 ground reports Open report →
Estimated-size surface Storm date Castle Rock / CO
Jun 1, 2026
1.75" Signatures 1.75" Estimated 1"
1 ground report Open report →
Estimated-size surface Storm date Castle Rock / CO
May 29, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Castle Rock / CO
May 17, 2026
1" Signatures 1"
No ground reports filed Open report →
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Set your territory and alerts today. When hail hits, use Overview to choose your streets and get moving.
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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 tells you where to look. Only an inspection confirms damage at an address. Last updated Sep 7, 2026.