On September 4, Hirosaki recorded the highest rainfall of 88 mm in the history of local observation, causing damage such as flooding of roads in various parts of the city.

In the Tsugaru area centering on Hirosaki, heavy rain fell over the whole area from the early morning of the 4th due to the development of cumulonimbus clouds flowing into the sky. According to data released by the Japan Meteorological Agency, at 10:02, the highest rainfall in the history of local observation was recorded at 88 mm per hour. It was a rainfall that greatly repainted the 63 mm generated on August 5, 1977 in the city.

Roads were flooded everywhere in Hirosaki city. The Hirosaki District Fire Service Union Headquarters Security Division announced that there were 7 underfloor floods and 18 above-floor floods in the city, with no human injury. The rain settled down in the afternoon, and the heavy rain warning and storm warning were canceled at 15:40. The flood in the city was gone.

At Ito-Yokado Hirosaki store (Ekimae-cho, Hirosaki-shi), water began to flow into the underpass from the attached Hirosaki bus terminal, so it was safe to suspend business from around 10:30 to 15:00. Restaurants in the underground mall, such as "Doutor Coffee Shop Hirosaki Ito-Yokado", were temporarily closed throughout the day.

Roads were flooded even in the suburbs of Hirosaki City. Yoshihiro Soma, the owner of "Soma Ice Cream Store" (Naruse Abado), known as "Badou no Ice", said, "If the rain had fallen for 30 minutes, water would have entered the store. Is it possible?"

Junichi Nagao, who is a weather forecaster at the local community FM station "Apple Wave", said, "Warm and humid air flowed from typhoon No. 10 in the south, and the temperature of the day before it rose to 36.7 degrees in Hirosaki did not drop until the next morning. It's also because of the development of rain clouds."