SwathIQ / Hail map / South Dakota

South Dakota Hail Map & History

South Dakota pairs eastern hail alley (Sioux Falls) with Black Hills upslope storms near Rapid City. Pick a date below to see the NOAA radar swath and reports, or check a specific address.

815

hail days since 2010

247

days with 2″+ hail

hail days this year

6.00″

largest stone on record

South Dakota storm date

Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in South Dakota. Radar-indicated, not a guarantee of damage.

Working South Dakota? Turn a storm into a route.

A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls South Dakota addresses inside a hail swath above your size threshold into a door-knock list you can export, scoped to your approved markets.

Get free access Check an address

Hail history in South Dakota

Since 2010, NOAA's Storm Prediction Center has logged 815 separate hail days in South Dakota, including 247 days with hail 2″ or larger -- the size that routinely totals roofs. The largest stone on record here: 6.00″ on 2015-06-19 near 3 ESE NISLAND, BUTTE. The most recent reported hail day was 2026-06-07. Major metros watched here: Sioux Falls, Rapid City, Aberdeen.

Top South Dakota counties by hail frequency

County	Hail days since 2010	Largest stone
PENNINGTON	183	4.50″
CUSTER	128	4.25″
MEADE	122	4.00″
LAWRENCE	100	4.50″
FALL RIVER	75	4.25″
PERKINS	69	3.00″

Recent South Dakota hail days

Date	Max hail	Reports
2026-06-07	3.25″	5
2026-06-04	2.75″	15
2026-06-03	1.50″	9
2026-06-02	1.75″	10
2026-05-31	1.25″	10
2026-05-30	1.50″	2
2026-05-24	2.00″	22
2026-05-17	1.75″	12

How to read the South Dakota map

The colored swath is NOAA's MRMS radar estimate of the largest hail in each ~1 km cell; the dots are individual SPC ground reports. Yellow is around an inch, red is 1.5 to 2″, and purple is 2″ and up -- see how hail size maps to roof damage. Click any spot on the map to see the hail history at that point, or look up a full street address on the hail history by address tool. Today's nationwide activity is on today's hail report.

Nearby states

Oklahoma · Colorado · Missouri · Minnesota · Iowa · Illinois

FAQ

How often does it hail in South Dakota?

NOAA has logged 815 hail days in South Dakota since 2010, including 247 days with 2″+ hail.

Is the South Dakota hail map free?

Yes, no login. A free account adds door-knock address lists and CRM exports.

How far back does the data go?

NOAA SPC storm reports since 2010, with high-resolution MRMS radar swaths for recent storms.

Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, South Dakota only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.