/ Storm field report · Jasper

Hail in Colfax · Jun 5, 2026

NEXRAD logged 0 hail signatures up to 1"; the estimated-size surface had no signal that day. Open it on the live map to see the swath over the streets.

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Peak hail signal 1" ≈ quarter · the largest NEXRAD radar signature
Homes in the hail footprint 0
Ground reports 0 none filed
Radar surfaces 1 NEXRAD only

Convective day · Jun 5, 2026 · noon–noon UTC

Severity

The 6th most severe storm Colfax has seen in the last 12 months

Composite score · 1.5 / 10
Storm severity score

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

1.5 /10
Peak hail signal
25 /100

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

Homes exposed
0 /100

How many homes sit inside the storm's footprint.

Ground truth
0 /100

Independent storm reports filed with the NWS.

Evidence / storm surfaces

How Colfax saw the hail — from two instruments

Jun 5, 2026 · Colfax, IA

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
NEXRAD radar-signature map of the hail storm over Colfax, IA on Jun 5, 2026 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 1" Detections 0

Only the NEXRAD radar-signature surface resolved for Jun 5, 2026 — the estimated-size swath had no hail signal to model for this storm, so there is one map to show, not two.

The storm in context

Where Jun 5, 2026 sits in Colfax's hail record.

This was Colfax's 3rd recorded hail day, arriving 49 days after the Apr 17, 2026 storm. By severity it ranks 6th of the 7 storms we have logged here. Radar put the day's largest stone over Colfax at 1" — the largest NEXRAD radar signature.

The Jun 5, 2026 convective day was bigger than Colfax: the same system put hail over 440 other tracked cities, 66 of them in Iowa. Nearest: Newton (15 miles east, up to 1"); Carlisle (16 miles southwest, up to 1.75"); Monroe (16 miles southeast, up to 1").

These maps are stills. In the app this date is one of 7 Colfax 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

No reports 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.

For this storm over Colfax, the NWS report log is empty — a common outcome, since ground reports only happen when someone witnesses the hail and takes the time to call it in. The detection record for the date lives in the radar maps above.

Damage-capable hail signal

What 1" hail means for Colfax 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

Colfax hail history

7 recorded storm days in Colfax, IA

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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 9, 2026.