Hail size 1.5"
Tea Lincoln County
“(FSD)”
— NOAA / SPC storm report
Hail in Sioux Falls Apr 13, 2026
Both radar surfaces caught this storm: NEXRAD logged 0 hail signatures up to 0", and the radar-estimated size reached 0.75" aloft.
Largest hailstone
0.75"
≈ penny to nickel · radar-estimated size aloft Homes in the hail footprint
6,079
Ground reports
7
7 hailThe 3rd most severe storm Sioux Falls 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.
4.5 /10
- Hail size
- 19 /100
- Homes exposed
- 76 /100
- Ground truth
- 100 /100
Largest hailstone — the top predictor of roof damage.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
How Sioux Falls 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
Where NEXRAD flagged hail as the storm passed — point signatures from the radar, which indicate hail overhead rather than confirm what landed.
Max size
0"
Detections
0
Radar-estimated hail size
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"
Where Apr 13, 2026 sits in Sioux Falls's hail record
This was Sioux Falls's 1st recorded hail day — the first hail day in our records for the city. By severity it ranks 3rd of the 9 storms we have logged here. Radar put the day's largest stone over Sioux Falls at 0.75" — radar-estimated size aloft.
The Apr 13, 2026 convective day was bigger than Sioux Falls: the same system put hail over 467 other tracked cities, 8 of them in South Dakota. Nearest: Valley Springs (19 miles east, up to 1.25"); Beaver Creek (24 miles east, up to 1.25"); Marion (26 miles southwest, up to 1.5").
These maps are stills from Sioux Falls's Apr 13, 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.
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.
Hail reports
7 reports Hail size 1"
3 NE Tea Lincoln County
“(FSD)”
— NOAA / SPC storm report
Hail size 1.5"
4 WSW Sioux Falls Minnehaha County
“(FSD)”
— NOAA / SPC storm report
Hail size 1"
5 W Sioux Falls Minnehaha County
“(FSD)”
— NOAA / SPC storm report
Hail size 1"
3 ENE Tea Lincoln County
“Penny to quarter size hail. (FSD)”
— NOAA / SPC storm report
Hail size 1.25"
4 NE Tea Lincoln County
“(FSD)”
— NOAA / SPC storm report
Hail size 1"
4 NE Tea Lincoln County
“(FSD)”
— NOAA / SPC storm report
Storm forensics
Read from the arrival times and locations of the NOAA ground reports,
not a radar-measured storm track.
How the storm moved
Reports came from Tea — beyond Sioux Falls itself.
What 0.75" hail means for Sioux Falls roofs
Hail this size sits right at the edge of the National Weather Service severe threshold. Newer roofs usually shrug it off, but aging or already-worn shingles can bruise, and soft metals — vents, flashing, gutters — often show the first dents.
What this storm is worth to a roofer
$73M
Potential roof exposure — 6,079 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Illustrative jobs
30 jobs
Illustrative work
~$450K
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.
Track hail over Sioux Falls on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Sioux Falls storm history — this Apr 13, 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
Sioux Falls hail history
← All hail in Sioux Falls 9 recorded storm days in Sioux Falls, SD
Other storms in Sioux Falls
Jul 25, 2026
0.75" Estimated 0.75"
5
ground reports 
Jul 4, 2026
1.75" Signatures 1.75" Estimated 1.25"
No ground reports filed 
Jul 2, 2026
1" Estimated 1"
No ground reports filed 
Jun 30, 2026
0.5" Estimated 0.5"
No ground reports filed 
Jun 27, 2026
0.75" Estimated 0.75"
No ground reports filed 
May 31, 2026
0.75" Estimated 0.75"
No ground reports filed 
May 24, 2026
1" Estimated 1"
3
ground reports 
May 17, 2026
1.5" Estimated 1.5"
4
ground reports
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.