Wind gust 58 mph
3 SW Holyoke Phillips County
“(BOU)”
— NOAA / SPC storm report
/ Storm field report · Phillips
Hail in Holyoke · Aug 12, 2026
Hit 31 days ago
NEXRAD logged 0 hail signatures up to 0"; the estimated-size surface reached 0.5" aloft. Open it on the live map to see the swath over the streets.
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Peak hail signal 0.5" ≈ pea to penny · radar-estimated size aloft
Homes in the hail footprint 14
Ground reports 1 1 wind
Radar surfaces 2 NEXRAD + estimated size
Convective day · Aug 12, 2026 · noon–noon UTC
Severity
The 11th most severe storm Holyoke has seen in the last 12 months
Composite score · 1.6 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
1.6 /10
- Peak hail signal
- 13 /100
- Homes exposed
- 24 /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 Holyoke saw the hail — from two instruments
Aug 12, 2026 · Holyoke, CO
Each storm gets two readings: the radar signatures NEXRAD recorded as the cells passed overhead, and a modeled estimate of hail size in the air. They are independent surfaces, so a mismatch between them is expected — and worth reading.
NEXRAD radar signatures Surface resolved
Radar signature field The point detections NEXRAD recorded overhead. Each signature marks where the radar saw hail aloft — it is a detection, not a stone measured on the ground.
Max size
0"
Detections
0
Radar-estimated hail size Surface resolved
Estimated size field Radar-estimated hail size over the swath. The model reports the biggest stone the storm could sustain in the air; what actually fell may have been smaller.
Max size
0.5"
The storm in context
Where Aug 12, 2026 sits in Holyoke's hail record.
This was Holyoke's 12th recorded hail day, arriving 3 days after the Aug 9, 2026 storm. By severity it ranks 11th of the 13 storms we have logged here. Radar put the day's largest stone over Holyoke at 0.5" — radar-estimated size aloft.
The Aug 12, 2026 convective day was bigger than Holyoke: the same system put hail over 507 other tracked cities, 13 of them in Colorado. Nearest: Yuma (21 miles southwest, up to 0.75"); Fleming (34 miles west, up to 0.5"); Wray (38 miles south, up to 0.75").
These maps are stills. In the app this date is one of 13 Holyoke 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.
Wind reports
1 reportBelow the severe threshold
What 0.5" hail means for Holyoke roofs.
Radar signals under three-quarters of an inch stay below the National Weather Service severe threshold and generally indicate lower roof risk. Older or already-worn materials can still show effects, but radar alone cannot determine whether a specific roof was damaged.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
14 homes × $12,000 avg. claim
Potential roof exposure
$168K
Potential roof exposure — 14 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Claim window
August 2028
Claims from this storm can typically be filed until around August 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 $3 on top of the $150 plan.
Holyoke hail history
Other storms in Holyoke.
13 recorded storm days in Holyoke, CO
Estimated-size surface Storm date Holyoke / CO
Aug 15, 2026
0.75" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Holyoke / CO
Aug 9, 2026
1" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Holyoke / CO
Jul 9, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Holyoke / CO
Jul 4, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Holyoke / CO
Jul 3, 2026
2.25" Signatures 2.25" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Holyoke / CO
Jul 2, 2026
1.75" Signatures 1.75" Estimated 1.25"
No ground reports filed Open report →
Estimated-size surface Storm date Holyoke / CO
Jun 30, 2026
1.75" Signatures 1.75" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Holyoke / CO
Jun 24, 2026
0.75" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Holyoke / CO
Jun 23, 2026
1" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Holyoke / CO
Jun 8, 2026
1 ground report Open report →
Estimated-size surface Storm date Holyoke / CO
May 30, 2026
2" Signatures 2" Estimated 1.25"
6 ground reports Open report →
Estimated-size surface Storm date Holyoke / CO
May 16, 2026
2.75" Signatures 2.75" Estimated 1.75"
No ground reports filed Open report →
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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 Aug 16, 2026.