Typhoon season

Stage = 37.5cm, Ta = 13.4C, Tw = 12.6C

Generally the Niigata area (and the Japan Sea region) is not influenced as strongly by typhoons as the Pacific coastal region. Southwestern Japan is more severely affected by typhoons as they normally make landfall on the Pacific coast, but once in a while a typhoon will track up over the Japan Sea and make landfall in northern Japan.

This year fine autumn weather continues most days in the period shown in the hydrograph below, but the moderate peak on 2 October was due to a powerful storm - the remnants of a typhoon system moving up the Japan Sea. At the Takane Amedas gauge, over 50mm of rainfall occurred during 1-2 October with maximum intensity of 17.5mm/h.

Crystal clear water at the gauging cross-section

Staff gauge needs to be put straight one of these days