First published Oct 20, 2026, 1:49:15 PM UTC · Last updated Oct 20, 2026, 1:49:15 PM UTC

Thunderstorms and lightning

Thunderstorm Tonight in Sumatera Utara

Reported by Indonesia BMKG Weather Alerts

Thunderstorms and heavy rainfall are forecast from 20:50 to 23:50 WIB on 20 October 2026 in parts of Sumatera Utara, including Bahorok, Batang Serangan, Besitang, Dolok Silau, Raya Kahean, Sei Lepan, and Silou Kahean. The public is advised to remain vigilant, limit outdoor activities, and take precautions.

At a glance

Affected location: Sumatera Utara

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Why it matters

The forecast warns of possible reduced visibility, strong winds, and localized flooding in the named areas.

Location

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Generated scores

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

Confidence: 6/10How 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: 2/10The event's broader significance, from limited importance (1) to major global importance (10).
Impact magnitude: 3/10The scale or severity of the real-world impact, from minor (1) to extreme (10).
Urgency: 7/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Primary official sources

Indonesia BMKG Weather Alerts Thunderstorm Tonight in Sumatera UtaraBMKG — Indonesian Agency for Meteorology, Climatology, and Geophysics

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