/ Storm field report · Mercer

Hail in Clarks Mills · Apr 15, 2026

The estimated-size surface reached 1.75" aloft; NEXRAD logged no point detections over Clarks Mills that day. Open it on the live map to see the swath over the streets.

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Peak hail signal 1.75" ≈ golf ball · radar-estimated size aloft
Homes in the hail footprint 1,812
Ground reports 3 3 hail
Radar surfaces 1 Estimated size only

Convective day · Apr 15, 2026 · noon–noon UTC

Severity

The most severe storm Clarks Mills has seen in the last 12 months

Composite score · 5.0 / 10
Storm severity score

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

5.0 /10
Peak hail signal
44 /100

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

Homes exposed
65 /100

How many homes sit inside the storm's footprint.

Ground truth
50 /100

Independent storm reports filed with the NWS.

Evidence / storm surfaces

How Clarks Mills saw the hail — from two instruments

Apr 15, 2026 · Clarks Mills, PA

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.

Radar-estimated hail size Surface resolved
Radar-estimated hail-size map of the storm over Clarks Mills, PA on Apr 15, 2026 Estimated size field

Radar-estimated hail size over the swath. The model reports the biggest stone the storm could sustain in the air; what actually fell may have been smaller.

Max size 1.75"

Only the radar-estimated size surface resolved for Apr 15, 2026 — this storm produced no NEXRAD point detections over Clarks Mills, so there is one map to show, not two.

The storm in context

Where Apr 15, 2026 sits in Clarks Mills's hail record.

This was Clarks Mills's 1st recorded hail day — the first hail day in our records for the city. By severity it ranks 1st of the 2 storms we have logged here. Radar put the day's largest stone over Clarks Mills at 1.75" — radar-estimated size aloft.

The Apr 15, 2026 convective day was bigger than Clarks Mills: the same system put hail over 425 other tracked cities, 25 of them in Pennsylvania. Nearest: Greenville (5 miles west, up to 1.75"); Mercer (7 miles south, up to 1.75"); Stoneboro (9 miles southeast, up to 2").

These maps are stills. In the app this date is one of 2 Clarks Mills 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

3 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.

Hail reports

3 reports
Hail size 1"
3 S Sheakleyville Mercer County

“Report from mPING: Quarter (1.00 in.). (PBZ)”

— NOAA / SPC storm report
Hail size 1.5"
3 NE Fredonia Mercer County

“Public shared a picture of ping pong ball size hail on social media. Time estimated based off radar. (PBZ)”

— NOAA / SPC storm report
Hail size 1.25"
4 NW Stoneboro Mercer County

“Report from mPING: Half Dollar (1.25 in.). (PBZ)”

— 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 Sheakleyville, Fredonia, and Stoneboro — beyond Clarks Mills itself.

High damage potential

What 1.75" hail means for Clarks Mills roofs.

Hail around an inch and a half is capable of cracking shingles, stripping granules, and denting gutters, vents, and siding. Risk is usually greatest near the strongest radar signal, but property-level damage still requires an on-site inspection.

Radar reading · not confirmed damage

Roofing exposure

What this storm is worth to a roofer.

1,812 homes × $12,000 avg. claim

Potential roof exposure

$22M

Potential roof exposure — 1,812 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.

Illustrative jobs
9 jobs
Illustrative work
~$135K

Close just 0.5% of the 1,812 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

April 2028

Claims from this storm can typically be filed until around April 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 $381 on top of the $150 plan.

Clarks Mills hail history

2 recorded storm days in Clarks Mills, PA

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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 3, 2026.