Reported by MET NORWAY 65 days ago.
No stronger detection stands among the 8 recorded within 20 km of this point since 15 March 2026 — 3 others scored the same. The last comparable one was on 19 March 2026. One more was recorded here in the fortnight before it.
What the source measured
MET NORWAY reported: Det er fare for tordenvær med mye lyn. Det vil være lokale forskjeller i intensitet. Noen steder vil ikke få tordenvær.
An estimated 108,085 people live within 50 km of this point.
Nearby, since 15 March 2026
- March 15, 2026 · score 39 · 3.3 km
- March 19, 2026 · score 39 · 4.3 km
- July 30, 2026 · score 43 · 19.9 km
How we know
One source: MET NORWAY. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 64 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 64% |
| Coordinates | 59.0573, 9.1901 |
| Nearest City | Porsgrunn (28 km) |
| Population Exposed | 108.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-30T20:00:49.122Z |
| Source | https://www.met.no/vaer-og-klima/ekstremvaervarsler-og-andre-farevarsler/vaerfenomener-som-kan-gi-farevarsel-fra-met/lyn |
Score Breakdown
Technical Details
| Event | lightning |
| Certainty | Likely |
| CapSeverity | Moderate |
| AreaDesc | Deler av Agder, Telemark og Vestfold |
| AwarenessType | 3; Thunderstorm |
| Instruction | Hold deg oppdatert: Følg utviklingen av tordenværet på yr.no/nb/kart/lyn. Unngå å sette deg selv i fare: Unngå utendørsaktiviteter på utsatte områder, som på fjellet, i vann eller på åpne sletter. Unngå å være det høyeste punktet i området. Søk ly mens tordenværet pågår, men unngå å søke ly under et tre. Ikke opphold deg i vann eller i en liten båt. |
| RiskMatrixColor | Yellow |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Want to know when something happens near Porsgrunn?
Calamity.live data shows a weather event with CalamityScore 43/100, near Porsgrunn (Norway), based on data from met_norway. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.