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Muroran

室蘭 · 北海道

Autumn colour outlook

Wed, Oct 21

Maple
Unlikely
PossibleLikelyVery likelyOctNovDecJantoday

This follows one maple tree in Muroran; temples and parks can peak at different times.

How the city score is calculated
  • Japan Meteorological Corporation forecasts Muroran's maple to colour on Nov 8 (round 2, released Oct 1).
  • Its past forecasts typically missed by 4.3 days.
  • In Muroran, peak usually lasts 4 days, from colouring to leaf-fall (median, JMA records).
  • Method: the JMC forecast blended 50/50 with the last ~10 years of JMA records, both updated as days pass without colouring.
  • Future days are capped at 85%: weeks ahead, nothing is certain.
  • JMA has not yet recorded colouring of Muroran's specimen maple.
  • In a normal year (1991–2020) the maple colours around Nov 7.

Spot reports

Last reported Oct NaN

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