First published Oct 20, 2026, 8:00:15 AM UTC · Last updated Oct 20, 2026, 8:00:15 AM UTC

Thunderstorms and lightning

Thunderstorms forecast in Serasan and Subi, Kepulauan Riau

Reported by Indonesia BMKG Weather Alerts

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.

At a glance

Affected location: Serasan and Subi, Kepulauan Riau, Indonesia

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Why it matters

The alert gives people in the named areas a short window to take the stated precautions.

Location

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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: 3/10The scale or severity of the real-world impact, from minor (1) to extreme (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 Afternoon in Kep. RiauBMKG — Indonesian Agency for Meteorology, Climatology, and Geophysics

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Thunderstorms and Heavy Rain Forecast in West KalimantanOct 20, 2026, 6:50 AM UTC
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.
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