/ Storm field report · Coconino

Hail in Flagstaff · Aug 6, 2026

NEXRAD logged 0 hail signatures up to 0"; the estimated-size surface reached 1" aloft. Open it on the live map to see the swath over the streets.

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Peak hail signal 1" ≈ quarter · radar-estimated size aloft
Homes in the hail footprint 2,353
Ground reports 1 1 hail
Radar surfaces 2 NEXRAD + estimated size

Convective day · Aug 6, 2026 · noon–noon UTC

Severity

The most severe storm Flagstaff has seen in the last 12 months

Composite score · 3.4 / 10
Storm severity score

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

3.4 /10
Peak hail signal
25 /100

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

Homes exposed
67 /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 Flagstaff saw the hail — from two instruments

Aug 6, 2026 · Flagstaff, AZ

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 Flagstaff, AZ on Aug 6, 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 0" Detections 0
Radar-estimated hail size Surface resolved
Radar-estimated hail-size map of the storm over Flagstaff, AZ on Aug 6, 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"

The storm in context

Where Aug 6, 2026 sits in Flagstaff's hail record.

This was Flagstaff's 8th recorded hail day, arriving 1 day after the Aug 5, 2026 storm. By severity it ranks 1st of the 13 storms we have logged here. Radar put the day's largest stone over Flagstaff at 1" — radar-estimated size aloft.

The Aug 6, 2026 convective day was bigger than Flagstaff: the same system put hail over 461 other tracked cities, 16 of them in Arizona. Nearest: Munds Park (28 miles south, up to 1"); Mormon Lake (28 miles south, up to 0.5"); Parks (29 miles west, up to 1.25").

These maps are stills. In the app this date is one of 13 Flagstaff 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 report
Hail size 1"
Kachina Village Coconino County

“Trained spotter called to report 1 inch size hail in Kachina Village. (FGZ)”

— NOAA / SPC storm report

Storm 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 Kachina Village — beyond Flagstaff itself.

Damage-capable hail signal

What 1" hail means for Flagstaff roofs.

Quarter-size and larger hail can bruise asphalt mats, remove granules, and dent exposed soft metal. The mapped footprint identifies an inspection priority area — it does not identify which individual roofs, if any, sustained damage.

Radar reading · not confirmed damage

Roofing exposure

What this storm is worth to a roofer.

2,353 homes × $12,000 avg. claim

Potential roof exposure

$28M

Potential roof exposure — 2,353 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.

Illustrative jobs
12 jobs
Illustrative work
~$180K

Close just 0.5% of the 2,353 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

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 $494 on top of the $150 plan.

Flagstaff hail history

Other storms in Flagstaff.

13 recorded storm days in Flagstaff, AZ
← All hail in Flagstaff
Radar-estimated hail-size map of the storm over Flagstaff, AZ on Sep 23, 2026 Estimated-size surface
Storm date Flagstaff / AZ

Sep 23, 2026

0.5"
Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Flagstaff, AZ on Sep 12, 2026 Estimated-size surface
Storm date Flagstaff / AZ

Sep 12, 2026

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

Aug 20, 2026

1"
Estimated 1"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Flagstaff, AZ on Aug 11, 2026 Estimated-size surface
Storm date Flagstaff / AZ

Aug 11, 2026

0.5"
Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Flagstaff, AZ on Aug 10, 2026 Estimated-size surface
Storm date Flagstaff / AZ

Aug 10, 2026

0.5"
Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Flagstaff, AZ on Aug 5, 2026 Estimated-size surface
Storm date Flagstaff / AZ

Aug 5, 2026

0.75"
Estimated 0.75"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Flagstaff, AZ on Jul 29, 2026 Estimated-size surface
Storm date Flagstaff / AZ

Jul 29, 2026

1.75"
Signatures 1.75" Estimated 1"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Flagstaff, AZ on Jul 27, 2026 Estimated-size surface
Storm date Flagstaff / AZ

Jul 27, 2026

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

Jul 23, 2026

1.5"
Signatures 1.5" Estimated 0.75"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Flagstaff, AZ on Jul 20, 2026 Estimated-size surface
Storm date Flagstaff / AZ

Jul 20, 2026

0.75"
Estimated 0.75"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Flagstaff, AZ on Jul 19, 2026 Estimated-size surface
Storm date Flagstaff / AZ

Jul 19, 2026

1"
Estimated 1"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Flagstaff, AZ on Jul 18, 2026 Estimated-size surface
Storm date Flagstaff / AZ

Jul 18, 2026

0.75"
Estimated 0.75"
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 Sep 24, 2026.