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Home > Weather and Earthquakes > Early Warning Information on Extreme Weather

Early Warning Information on Extreme Weather

  • temperature
  • snowfall
This chart shows areas of Early Warning Information on Extreme Weather for Temperature or Snowfall. The period of the prediction is given below the name of the area.
15 April 2019: The Early Warning Information on Extreme Weather web resource has moved to https://www.data.jma.go.jp/gmd/cpd/souten/en/. Please be sure to update any bookmarks.
  Early Warning Information on Extreme Weather is issued at 14:30 JST every Monday and Thursday when a high probability (30% or more) of a very high or very low seven-day average temperature is predicted in the week starting from five to eight days ahead of the date of announcement. If information was issued on the preceding announcement date, follow-up information is issued on the next announcement date. The terms very high and very low refer to high or low seven-day average temperatures in the top 10% of all samples.