First published 9/19/2026, 12:58:15 AM · Last updated 9/19/2026, 12:58:15 AM

Severe Thunderstorm Warning issued September 18 at 8:39PM EDT until September 18 at 9:15PM EDT by NWS Greenville-Spartanburg SC

A Severe Thunderstorm Warning was issued by the National Weather Service Greenville-Spartanburg office on September 18 at 8:39 PM EDT, in effect until 9:15 PM EDT for the Greenville–Spartanburg, South Carolina area.

Categories: severe-weather-and-natural-disasters

Generated scores

Scores are based on the cited reporting and use a 1–10 scale. Read the methodology.

Confidence: 9/10How certain the assessment is based on the clarity and evidence in the cited reporting.
Geographic reach: 3/10How widely the event reaches, from a local area (1) to worldwide impact (10).
Global importance: 6/10The event's broader significance, from limited importance (1) to major global importance (10).
Impact magnitude: 5/10The scale or severity of the real-world impact, from minor (1) to extreme (10).
Positivity: 2/10How harmful or beneficial the event is, from strongly harmful (1) to strongly positive (10).
Urgency: 9/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Why it matters

Active severe thunderstorm warnings indicate an immediate weather hazard for people and travel in the named area; affected residents and those planning to travel through the region should seek shelter and follow local guidance.

Location

Sources

Severe Thunderstorm Warning issued September 18 at 8:39PM EDT until September 18 at 9:15PM EDT by NWS Greenville-Spartanburg SC

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