Alert archive / North Carolina / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 11, NWS Greenville-Spartanburg, SC

March 16, 2025Union County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Mar 16, 2025, 9:09 AM EDT for Union County, North Carolina. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Mar 16, 2025, 9:09 AM EDT (13:09 UTC)
Expired: Mar 16, 2025, 9:45 AM EDT
In force: 36 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

County Union County, NC

The radar

The Columbia radar (KCAE), 128 km from the middle of the area, began a volume at 13:10 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 1.2 hours before the alert went out and 237 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 56 J/kg
Mixed-layer CIN: -249 J/kg
Mixed-layer LCL: 911 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 304 m²/s²
0-3 km storm-relative helicity: 333 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at Mar 16, 6:35 AM EDT, 2 hours 34 minutes earlier.

Area forecast discussion, Mar 16, 6:35 AM EDT, 2 hours 34 minutes before

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Hazardous weather outlook, Mar 16, 3:18 AM EDT, 5 hours 51 minutes before

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In the hours before

Local storm report, Mar 16, 4:39 AM EDT, 4 hours 30 minutes before

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Local storm report, Mar 16, 6:10 AM EDT, 2 hours 59 minutes before

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Special weather statement, Mar 16, 7:25 AM EDT, 1 hour 44 minutes before

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Special weather statement, Mar 16, 8:00 AM EDT, 1 hour 9 minutes before

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Special weather statement, Mar 16, 8:12 AM EDT, 57 minutes before

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Special weather statement, Mar 16, 8:33 AM EDT, 36 minutes before

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The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 16, 5:48 AM EDT	Areal Flood Advisory	GSP	Haywood, Jackson	3 hr
Mar 16, 7:25 AM EDT	Special Weather Statement	GSP	Polk	35 min
Mar 16, 8:00 AM EDT	Special Weather Statement	GSP	Caldwell	15 min
Mar 16, 8:33 AM EDT	Special Weather Statement	GSP	Union	72 min
Mar 16, 6:07 PM EDT	Special Weather Statement	GSP	Union	23 min
Mar 16, 8:12 AM EDT	Special Weather Statement	GSP	Chester	48 min
Mar 16, 6:46 PM EDT	Special Weather Statement	GSP	Chester	14 min
Mar 16, 3:34 AM EDT	Special Weather Statement	GSP	Rabun	41 min
Mar 16, 4:22 AM EDT	Special Weather Statement	GSP	Rabun	38 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2025 Every severe thunderstorm warning in 2025

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.