First published Oct 21, 2026, 4:59:15 AM UTC · Last updated Oct 21, 2026, 4:59:15 AM UTC

Thunderstorms and lightning

Thunderstorms Forecast in Four Areas of East Kalimantan

Reported by Indonesia BMKG Weather Alerts

Thunderstorms and heavy rain are forecast in Bontang Selatan, Loa Janan, Marang Kayu, and Samarinda Utara from 12:40 to 15:00 WITA on 21 October 2026. The source warns of possible reduced visibility, strong winds, and localized flooding.

At a glance

Affected location: East Kalimantan

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Why it matters

The source advises the public to stay vigilant, limit outdoor activities, and take precautions during the forecast period.

Location

Highlighted marker: this event.

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: 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 Kalimantan TimurBMKG — Indonesian Agency for Meteorology, Climatology, and Geophysics

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