Hail size 1"
2 SE Hillsdale St. Louis City County
“Report from mPING: Quarter (1.00 in.). (LSX)”
— NOAA / SPC storm report
/ Storm field report · St. Louis
Hail in Saint Louis · Apr 26, 2026
NEXRAD logged 0 hail signatures up to 1.75"; the estimated-size surface reached 0.75" aloft. Open it on the live map to see the swath over the streets.
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Peak hail signal 1.75" ≈ golf ball · the largest NEXRAD radar signature
Homes in the hail footprint 124,786
Ground reports 11 11 hail
Radar surfaces 2 NEXRAD + estimated size
Convective day · Apr 26, 2026 · noon–noon UTC
Severity
The most severe storm Saint Louis has seen in the last 12 months
Composite score · 6.6 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
6.6 /10
- Peak hail signal
- 44 /100
- Homes exposed
- 100 /100
- Ground truth
- 100 /100
Largest radar-indicated size — a signal of damage potential, not confirmation.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
Evidence / storm surfaces
How Saint Louis saw the hail — from two instruments
Apr 26, 2026 · Saint Louis, MO
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 Surface resolved
Radar signature field Where NEXRAD flagged hail as the storm passed — point signatures from the radar, which indicate hail overhead rather than confirm what landed.
Max size
1.75"
Detections
0
Radar-estimated hail size Surface resolved
Estimated size field 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
0.75"
The storm in context
Where Apr 26, 2026 sits in Saint Louis's hail record.
This was Saint Louis's 2nd recorded hail day, arriving 42 days after the Mar 15, 2026 storm. By severity it ranks 1st of the 15 storms we have logged here. Radar put the day's largest stone over Saint Louis at 1.75" — the largest NEXRAD radar signature.
The Apr 26, 2026 convective day was bigger than Saint Louis: the same system put hail over 710 other tracked cities, 278 of them in Missouri. Nearest: Fenton (14 miles south, up to 1.75"); Eureka (15 miles south, up to 1.75"); Pacific (18 miles southwest, up to 1.75").
These maps are stills. In the app this date is one of 15 Saint Louis 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
11 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
11 reports Hail size 1.25"
2 SE Hillsdale St. Louis City County
“Report from mPING: Half Dollar (1.25 in.). (LSX)”
— NOAA / SPC storm report
Hail size 1.5"
2 NNW Saint Louis St. Louis City County
“picture received on X from near Kings Highway and MLK Dr. (LSX)”
— NOAA / SPC storm report
Hail size 1"
2 ENE Maplewood St. Louis City County
“(LSX)”
— NOAA / SPC storm report
Hail size 1.5"
1 E Clayton St. Louis City County
“(LSX)”
— NOAA / SPC storm report
Hail size 1.75"
1 E University City St. Louis County
“(LSX)”
— NOAA / SPC storm report
Hail size 1.5"
University City St. Louis County
“Estimated ping pong sized hail with photo and US quarter. Time estimated from radar. (LSX)”
— NOAA / SPC storm report
Hail size 1"
2 W Saint Louis St. Louis City County
“Report from mPING: Quarter (1.00 in.). (LSX)”
— NOAA / SPC storm report
Hail size 1.25"
1 W Jennings St. Louis County
“Report from mPING: Half Dollar (1.25 in.). (LSX)”
— NOAA / SPC storm report
Hail size 1.5"
1 N University City St. Louis County
“(LSX)”
— NOAA / SPC storm report
Hail size 1"
1 NW University City St. Louis County
“Report from mPING: Quarter (1.00 in.). (LSX)”
— 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.
The storm tracked north at roughly 10 mph, based on the timing of ground reports.
Hail was reported over 31 minutes, from to .
Reports came from Hillsdale, Maplewood, Clayton, University City, and Jennings — beyond Saint Louis itself.
High damage potential
What 1.75" hail means for Saint Louis 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.
124,786 homes × $12,000 avg. claim
Potential roof exposure
$1.5B
Potential roof exposure — 124,786 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 624 jobs
- Illustrative work
- ~$9.4M
Close just 0.5% of the 124,786 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 $26,205 on top of the $150 plan.
Saint Louis hail history
Other storms in Saint Louis.
15 recorded storm days in Saint Louis, MO
Estimated-size surface Storm date Saint Louis / MO
Aug 16, 2026
1" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Saint Louis / MO
Jul 27, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Saint Louis / MO
Jul 19, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Saint Louis / MO
Jul 10, 2026
1" Signatures 1" Estimated 0.75"
No ground reports filed Open report →
NEXRAD surface Storm date Saint Louis / MO
Jul 8, 2026
1.25" Signatures 1.25"
No ground reports filed Open report →
Estimated-size surface Storm date Saint Louis / MO
Jul 4, 2026
1.5" Signatures 1.5" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Saint Louis / MO
Jul 3, 2026
1" Signatures 1"
No ground reports filed Open report →
Estimated-size surface Storm date Saint Louis / MO
Jun 11, 2026
0.75" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Saint Louis / MO
May 31, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Saint Louis / MO
May 18, 2026
1.5" Signatures 1.5" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Saint Louis / MO
May 16, 2026
1" Signatures 1"
No ground reports filed Open report →
Estimated-size surface Storm date Saint Louis / MO
May 4, 2026
1" Signatures 1"
No ground reports filed Open report →
Estimated-size surface Storm date Saint Louis / MO
Apr 27, 2026
2" Signatures 2" Estimated 1.5"
4 ground reports Open report →
Estimated-size surface Storm date Saint Louis / MO
Mar 15, 2026
1.25" Signatures 1.25" Estimated 0.5"
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 Aug 17, 2026.