First published 9/18/2026, 9:33:15 PM · Last updated 9/18/2026, 9:33:15 PM

Severe Thunderstorm Warning issued September 18 at 4:54PM EDT until September 18 at 5:15PM EDT by NWS Greenville-Spartanburg SC

The National Weather Service Greenville-Spartanburg (SC) issued a Severe Thunderstorm Warning on September 18 at 4:54 PM EDT (published 2026-09-18T20:54:00Z) with an end time of 5:15 PM EDT. The supplied item does not provide specific counties, coordinates, or affected communities beyond the issuing office.

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: 4/10The 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: 10/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Why it matters

Severe thunderstorm warnings indicate an ongoing or imminent severe thunderstorm that can pose hazards to people, property, and travel. This warning is time-sensitive and may require people in the affected area to seek shelter and avoid travel until the warning expires.

Location

Sources

Severe Thunderstorm Warning issued September 18 at 4:54PM EDT until September 18 at 5:15PM EDT by NWS Greenville-Spartanburg SC

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