Hail in South Carolina, March 20, 2018

Name: Hail in South Carolina, March 20, 2018
Start: 2018-03-20T18:11
End: 2018-03-20T18:38
Location: South Carolina

March 20, 2018 · NWS GSP · 2 events in 1 county or zone

A cluster of evening thunderstorms developed across the Piedmont in association with a frontal system. The storms produced some hail across York County.

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
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 2

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 GSP wrote it up.

A cluster of evening thunderstorms developed across the Piedmont in association with a frontal system. The storms produced some hail across York County.

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 Greenville-Spartanburg, SC wrote its last area forecast discussion before the first event at Mar 20, 1:42 PM EST, 4 hours 29 minutes earlier.

Area forecast discussion, Mar 20, 1:42 PM EST, 4 hours 29 minutes before

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Hazardous weather outlook, Mar 20, 3:12 PM EST, 2 hours 59 minutes before

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In the hours before

Special weather statement, Mar 20, 4:54 PM EST, 1 hour 17 minutes before

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Special weather statement, Mar 20, 5:28 PM EST, 43 minutes before

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Special weather statement, Mar 20, 5:30 PM EST, 41 minutes before

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Special weather statement, Mar 20, 5:34 PM EST, 37 minutes before

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Special weather statement, Mar 20, 5:56 PM EST, 15 minutes before

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Special weather statement, Mar 20, 5:57 PM EST, 14 minutes before

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The radar

The Greer radar (KGSP), 94 km away, was scanning. The volume nearest the first event began at 23:10 UTC.

Open the radar archive at this moment

Event by event

2 hail. Local standard time, as filed.

Hail, York

When: March 20, 6:11 PM EST
Where: York County, 0.69 mi N of Clover
Measured: 0.88 in hail
Reported by: Public
Coordinates: 35.110, -81.230

Public reported nickel sized hail in the Clover area.

Hail, York

When: March 20, 6:38 PM EST
Where: York County, 0.69 mi N of Boyd Hill
Measured: 0.75 in hail
Reported by: Broadcast Media
Coordinates: 34.940, -81.030

Media reported 3/4 inch hail in the Rock Hill area.

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 Carolina in 2018 Every state in 2018 This day in weather history Warnings in South Carolina, March 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 2026-09-30. Each event’s entry at NCEI: 746032, 746033.