/ Storm field report · Lincoln

Hail in Arriba · Jul 22, 2026

NEXRAD logged 3 hail signatures up to 2.5"; the estimated-size surface reached 1.75" aloft. At 2.5" — baseball — this is a severe hail signal associated with roof damage. Open it on the live map to see the swath over the streets.

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Peak hail signal 2.5" ≈ baseball · the largest NEXRAD radar signature
Homes in the hail footprint 1
Ground reports 1 1 wind
Radar surfaces 2 NEXRAD + estimated size

Convective day · Jul 22, 2026 · noon–noon UTC

Severity

The 5th most severe storm Arriba has seen in the last 12 months

Composite score · 4.2 / 10
Storm severity score

Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.

4.2 /10
Peak hail signal
63 /100

Largest radar-indicated size — a signal of damage potential, not confirmation.

Homes exposed
6 /100

How many homes sit inside the storm's footprint.

Ground truth
17 /100

Independent storm reports filed with the NWS.

Evidence / storm surfaces

How Arriba saw the hail — from two instruments

Jul 22, 2026 · Arriba, CO

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 Surface resolved
NEXRAD radar-signature map of the hail storm over Arriba, CO on Jul 22, 2026 Radar signature field

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 2.5" Detections 3
Radar-estimated hail size Surface resolved
Radar-estimated hail-size map of the storm over Arriba, CO on Jul 22, 2026 Estimated size field

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 1.75"

The storm in context

Where Jul 22, 2026 sits in Arriba's hail record.

This was Arriba's 10th recorded hail day, arriving 12 days after the Jul 10, 2026 storm. By severity it ranks 5th of the 15 storms we have logged here. Radar put the day's largest stone over Arriba at 2.5" — the largest NEXRAD radar signature.

The Jul 22, 2026 convective day was bigger than Arriba: the same system put hail over 158 other tracked cities, 28 of them in Colorado. Nearest: Genoa (15 miles southwest, up to 1"); Flagler (17 miles northeast, up to 2.5"); Seibert (24 miles east, up to 1").

These maps are stills. In the app this date is one of 15 Arriba 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 report
Wind gust 62 mph
1 E Arriba Lincoln County

“WeatherLink station. (BOU)”

— NOAA / SPC storm report

Severe hail signal

What 2.5" hail means for Arriba roofs.

Two-inch-plus hail is capable of puncturing shingles, breaking skylights or windows, and heavily denting soft materials. The strongest radar bands warrant prompt inspection, but neither the signal nor the footprint confirms damage at a specific address.

Radar reading · not confirmed damage

Roofing exposure

What this storm is worth to a roofer.

1 homes × $12,000 avg. claim

Potential roof exposure

$12K

Potential roof exposure — 1 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.

Claim window

July 2028

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.

Names and phones for every home in the footprint: at most $0 on top of the $150 plan.

Arriba hail history

Other storms in Arriba.

15 recorded storm days in Arriba, CO
← All hail in Arriba
Map unavailable
NEXRAD surface
Storm date Arriba / CO

Sep 5, 2026

1.25"
Estimated 1.25"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Arriba, CO on Aug 21, 2026 Estimated-size surface
Storm date Arriba / CO

Aug 21, 2026

1"
Estimated 1"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Arriba, CO on Aug 19, 2026 Estimated-size surface
Storm date Arriba / CO

Aug 19, 2026

3.5"
Estimated 3.5"
1 ground report Open report →
Radar-estimated hail-size map of the storm over Arriba, CO on Jul 28, 2026 Estimated-size surface
Storm date Arriba / CO

Jul 28, 2026

0.75"
Signatures 0.75" Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Arriba, CO on Jul 23, 2026 Estimated-size surface
Storm date Arriba / CO

Jul 23, 2026

2"
Signatures 2" Estimated 1"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Arriba, CO on Jul 10, 2026 Estimated-size surface
Storm date Arriba / CO

Jul 10, 2026

0.5"
Signatures 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Arriba, CO on Jul 9, 2026 Estimated-size surface
Storm date Arriba / CO

Jul 9, 2026

1"
Signatures 1"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Arriba, CO on Jul 3, 2026 Estimated-size surface
Storm date Arriba / CO

Jul 3, 2026

4"
Signatures 4" Estimated 3.75"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Arriba, CO on Jun 23, 2026 Estimated-size surface
Storm date Arriba / CO

Jun 23, 2026

0.75"
Estimated 0.75"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Arriba, CO on Jun 21, 2026 Estimated-size surface
Storm date Arriba / CO

Jun 21, 2026

0.75"
Estimated 0.75"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Arriba, CO on Jun 20, 2026 Estimated-size surface
Storm date Arriba / CO

Jun 20, 2026

0.5"
Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Arriba, CO on Jun 8, 2026 Estimated-size surface
Storm date Arriba / CO

Jun 8, 2026

4"
Signatures 4" Estimated 2.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Arriba, CO on May 21, 2026 Estimated-size surface
Storm date Arriba / CO

May 21, 2026

2.25"
Estimated 2.25"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Arriba, CO on May 17, 2026 Estimated-size surface
Storm date Arriba / CO

May 17, 2026

2"
Signatures 2" Estimated 1.25"
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 Sep 6, 2026.