Occurred Oct 17, 2026, 9:30:00 PM UTC

First published Oct 18, 2026, 12:19:15 AM UTC · Last updated Oct 18, 2026, 12:19:15 AM UTC

Thunderstorm This Morning in Sumatera Utara

Thunderstorms and heavy rainfall are forecast from 05:00 to 08:00 WIB on 18 October 2026 in parts of Sumatera Utara. The forecast warns of possible reduced visibility, strong winds, and localized flooding, and advises vigilance and limiting outdoor activities.

Why it matters

The forecast identifies a defined three-hour period and multiple affected localities in Sumatera Utara.

Location

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: 7/10How 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: 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: 8/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Primary official sources

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

Report an issue

Read our editorial process and corrections policy.