Storm report · Louisa

Hail in Letts Jul 3, 2026

Hit 31 days ago

Both radar surfaces caught this storm: NEXRAD logged 0 hail signatures up to 1", and the radar-estimated size reached 0" aloft.

Largest hailstone

1"

≈ quarter · the largest NEXRAD radar signature
Homes in the hail footprint

0

Ground reports

0

none filed
Severity

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

Storm severity score

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

1.5 /10
Hail size
25 /100

Largest hailstone — the top predictor of roof damage.

Homes exposed
0 /100

How many homes sit inside the storm's footprint.

Ground truth
0 /100

Independent storm reports filed with the NWS.

Two ways to read the storm

How Letts saw the hail — from two instruments

The maps here read the same storm from two angles — point detections from NEXRAD, and modeled hail size aloft. Where the two disagree is informative: it marks where estimated size outran the signatures, or trailed them.

NEXRAD radar signatures
NEXRAD radar-signature map of the hail storm over Letts, IA on Jul 3, 2026

Where NEXRAD flagged hail as the storm passed — point signatures from the radar, which indicate hail overhead rather than confirm what landed.

Max size 1" Detections 0
Radar-estimated hail size
Radar-estimated hail-size map of the storm over Letts, IA on Jul 3, 2026

The modeled maximum hail size across the swath, derived from radar aloft — the largest stone the storm could have supported, which is not necessarily what reached the ground.

Max size 0"
The storm in context

Where Jul 3, 2026 sits in Letts's hail record

This was Letts's 4th recorded hail day, arriving 79 days after the Apr 15, 2026 storm. By severity it ranks 4th of the 4 storms we have logged here. Radar put the day's largest stone over Letts at 1" — the largest NEXRAD radar signature.

The Jul 3, 2026 convective day was bigger than Letts: the same system put hail over 1,885 other tracked cities, 182 of them in Iowa. Nearest: Columbus Junction (5 miles west, up to 1"); Wapello (7 miles south, up to 1"); Morning Sun (14 miles south, up to 1").

These maps are stills from Letts's Jul 3, 2026 storm. In the Overview app the same surfaces are live — radar updating in real time, radar-estimated hail size as it forms, and NWS spotter reports pinned where they're filed — with a radar replay you can scrub back over any past day.

Ground reports

What people on the ground reported

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 Letts, 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.

Shingle-bruising hail

What 1" hail means for Letts roofs

Quarter-size and larger hail is where asphalt shingle damage starts in earnest: bruised mats and granule loss that homeowners can't see from the ground. Most people inside the footprint won't know their roof was hit until someone inspects it.

Track hail over Letts on the live map

Radar updates in real time, spotter reports appear on the map as they're filed, and the full Letts storm history — this Jul 3, 2026 storm included — sits underneath. When you're ready, draw this storm's footprint and pull highly accurate homeowner contact information for every address inside it.

Highly accurate contact information starting at $0.23 per address — every contact included. Digital leads cost $15–$40. Start with a 7-day free trial — no credit card required. See pricing

Letts hail history

4 recorded storm days in Letts, IA

← All hail in Letts

Other storms in Letts

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 surfaces are detections and estimates, not confirmed damage. Last updated Aug 3, 2026.