First published Oct 20, 2026, 6:51:15 AM UTC · Last updated Oct 20, 2026, 6:51:15 AM UTC

Thunderstorms and lightning

Thunderstorm This Afternoon in Sumatera Utara

Reported by Indonesia BMKG Weather Alerts

A forecast covered numerous parts of North Sumatra from 13:25 to 16:25 WIB on 20 October 2026. It warned of possible reduced visibility, strong winds and localized flooding, and advised vigilance and limiting outdoor activity.

At a glance

Affected location: Sumatera Utara

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Why it matters

The forecast calls for precautions during a short period of potentially hazardous weather across the listed 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: 3/10The 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 This Afternoon in Sumatera UtaraBMKG — Indonesian Agency for Meteorology, Climatology, and Geophysics

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Related developments reported in the last 30 days. These are not necessarily ongoing incidents.

Nearby · within 200 km
Thunderstorms and Heavy Rain Forecast in Sumatera UtaraOct 20, 2026, 3:05 AM UTC
Thunderstorms and heavy rainfall are forecast in parts of Sumatera Utara from 20 October 2026 at 10:15 WIB, with conditions expected to improve by 13:15 WIB. Reduced visibility, strong winds, and localized flooding are listed as possible effects.
Nearby · within 200 km
Thunderstorm This Morning in Sumatera UtaraOct 20, 2026, 3:05 AM UTC
Thunderstorms and heavy rainfall were forecast in parts of North Sumatra from 10:15 to 13:15 WIB on 20 October 2026, with possible reduced visibility, strong winds, and localized flooding.
Same topic
Thunderstorm with light to modrate rain/Lightning/wind speed 30-40 kmph is very likely to occur at isolated places over Bhilwara, Pali, Rajsamand, Udaipur in next 3 hours.Oct 20, 2026, 7:43 AM UTC
A thunderstorm with light to moderate rain, lightning and winds of 30–40 km/h is forecast at isolated places in five Rajasthan districts within the next three hours. The source advises following SDMA guidelines.
Same topic
Thunderstorm This Afternoon in RiauOct 20, 2026, 7:30 AM UTC
2 reports describing the same event are grouped here. Expand the group to review every source report.
Same topic
Thunderstorm This Evening in Sulawesi BaratOct 20, 2026, 7:25 AM UTC
Thunderstorms and heavy rainfall are forecast in parts of Sulawesi Barat, including Malunda, Mamuju, and Tapalang, from 15:40 to 17:40 WITA on 20 October 2026. The forecast warns of reduced visibility, strong winds, and localized flooding, and advises people to limit outdoor activities and take precautions.
Same topic
Thunderstorm This Afternoon in AcehOct 20, 2026, 7:25 AM UTC
2 reports describing the same event are grouped here. Expand the group to review every source report.

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