Hail in South Dakota, September 19, 2018

Name: Hail in South Dakota, September 19, 2018
Start: 2018-09-19T03:25
End: 2018-09-19T03:25
Location: South Dakota

September 19, 2018 · NWS ABR · 1 event in 1 county or zone

A severe thunderstorm produced quarter size hail in Hand county northwest of Polo.

Where it happened

Every event with a place to put it. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
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Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 1

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS ABR wrote it up.

A severe thunderstorm produced quarter size hail in Hand county northwest of Polo.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Aberdeen, SD wrote its last area forecast discussion before the first event at Sep 19, 2:03 AM CST, 1 hour 22 minutes earlier.

Area forecast discussion, Sep 19, 2:03 AM CST, 1 hour 22 minutes before

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In the hours before

Special weather statement, Sep 19, 1:12 AM CST, 2 hours 13 minutes before

Special Weather Statement
National Weather Service Aberdeen SD
112 AM MDT WED SEP 19 2018

SDZ015-190800-
Dewey SD-
112 AM MDT WED SEP 19 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN DEWEY COUNTY UNTIL
200 AM MDT...

At 112 AM MDT, Doppler radar was tracking a strong thunderstorm 8
miles east of Thunder Butte, or 11 miles north of Dupree, moving east
at 55 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Isabel, Little Moreau Rec Area, White Horse, Bear Creek, Ridgeview
and Green Grass.

LAT...LON 4538 10149 4539 10147 4540 10147 4542 10075
      4503 10075 4506 10148
TIME...MOT...LOC 0712Z 273DEG 49KT 4521 10151

TDK

Special weather statement, Sep 19, 2:11 AM CST, 1 hour 14 minutes before

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Special weather statement, Sep 19, 2:23 AM CST, 1 hour 2 minutes before

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Special weather statement, Sep 19, 2:42 AM CST, 43 minutes before

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Special weather statement, Sep 19, 3:13 AM CST, 12 minutes before

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The radar

The Aberdeen radar (KABR), 93 km away, was scanning. The volume nearest the first event began at 09:22 UTC.

Open the radar archive at this moment

Event by event

1 hail. Local standard time, as filed.

Hail, Hand

When: September 19, 3:25 AM CST
Where: Hand County, 8 mi NW of Polo
Measured: 1 in hail
Reported by: Trained Spotter
Coordinates: 44.850, -99.230

What these are

Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in South Dakota in 2018 Every state in 2018 This day in weather history Warnings in South Dakota, September 2018

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 786979.