/ Storm field report · Jefferson

Hail in Oskaloosa · Aug 18, 2026

Hit 25 days ago

The estimated-size surface reached 1.25" aloft; NEXRAD logged no point detections over Oskaloosa that day. Open it on the live map to see the swath over the streets.

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Peak hail signal 1.25" ≈ half-dollar · radar-estimated size aloft

Homes in the hail footprint 2,456

Ground reports 1 1 wind

Radar surfaces 1 Estimated size only

Convective day · Aug 18, 2026 · noon–noon UTC

Severity

The 4th most severe storm Oskaloosa has seen in the last 12 months

Composite score · 3.8 / 10

Storm severity score

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

3.8 /10

Peak hail signal: 31 /100
Homes exposed: 68 /100
Ground truth: 17 /100

Evidence / storm surfaces

How Oskaloosa saw the hail — from two instruments

Aug 18, 2026 · Oskaloosa, KS

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.

Radar-estimated hail-size map of the storm over Oskaloosa, KS on Aug 18, 2026 — 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 1.25"

Only the radar-estimated size surface resolved for Aug 18, 2026 — this storm produced no NEXRAD point detections over Oskaloosa, so there is one map to show, not two.

The storm in context

Where Aug 18, 2026 sits in Oskaloosa's hail record.

This was Oskaloosa's 11th recorded hail day, arriving 4 days after the Aug 14, 2026 storm. By severity it ranks 4th of the 11 storms we have logged here. Radar put the day's largest stone over Oskaloosa at 1.25" — radar-estimated size aloft.

The Aug 18, 2026 convective day was bigger than Oskaloosa: the same system put hail over 309 other tracked cities, 47 of them in Kansas. Nearest: Mc Louth (8 miles east, up to 0.5"); Valley Falls (9 miles northwest, up to 1.75"); Meriden (11 miles west, up to 1.75").

These maps are stills. In the app this date is one of 11 Oskaloosa 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 70 mph

Ozawkie Jefferson County

3:24 AM UTC

“(TOP)”
— 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 Ozawkie — beyond Oskaloosa itself.

Damage-capable hail signal

What 1.25" hail means for Oskaloosa 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.

2,456 homes × $12,000 avg. claim

Potential roof exposure

$29M

Potential roof exposure — 2,456 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 2,456 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 $516 on top of the $150 plan.

Oskaloosa hail history

11 recorded storm days in Oskaloosa, KS

← All hail in Oskaloosa

Radar-estimated hail-size map of the storm over Oskaloosa, KS on Aug 14, 2026

Estimated-size surface

Storm date Oskaloosa / KS

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See the hail, review your recommendations, and canvass with Overview on iPhone.

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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 19, 2026.

The 4th most severe storm Oskaloosa has seen in the last 12 months

How Oskaloosa saw the hail — from two instruments

Where Aug 18, 2026 sits in Oskaloosa's hail record.

What people on the ground reported

Wind reports

How the storm moved

What 1.25" hail means for Oskaloosa roofs.

What this storm is worth to a roofer.

Other storms in Oskaloosa.

Aug 14, 2026

Aug 5, 2026

Jul 8, 2026

Jul 3, 2026

May 31, 2026

May 29, 2026

May 18, 2026

Apr 26, 2026

Apr 23, 2026

Apr 17, 2026

Take your next area into the field.