First published Oct 20, 2026, 7:30:15 AM UTC · Last updated Oct 20, 2026, 7:30:15 AM UTC

Thunderstorms and lightning

Thunderstorms and Heavy Rain Forecast in West Kalimantan

Reported by Indonesia BMKG Weather Alerts

Thunderstorms and heavy rain were forecast for parts of West Kalimantan, including Sambas, Selakau, and northern Singkawang, from 14:00 to 16:00 WIB on 20 October 2026. The forecast noted possible reduced visibility, strong winds, and localized flooding.

At a glance

Affected location: West Kalimantan

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Why it matters

The forecast advised people to stay vigilant, limit outdoor activities, and take precautions during the stated period.

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 This Afternoon in Kalimantan BaratBMKG — Indonesian Agency for Meteorology, Climatology, and Geophysics

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Thunderstorms and heavy rainfall are forecast in Serasan and Subi, Kepulauan Riau, from 14:25 to 16:30 WIB on 20 October 2026. The alert advises vigilance and precautions, citing possible reduced visibility, strong winds, and localized flooding.
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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.
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Thunderstorms and heavy rainfall were forecast for parts of Bengkulu from 14:30 to 16:30 WIB on 20 October 2026. Reduced visibility, strong winds, and localized flooding were listed as possible impacts.

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