Guerilla downpours in Japan


In the last ten years or so it seems that sudden and difficult to forecast thunderstorms have increased; they have been named guerilla downpours, and this survey from Weather News looked at awareness of such storms.

The average guerilla storm will brew up in an hour or so, often going from bright daylight to night-like darkness and accompanied by a 5 to 10 degrees Celsius temperature drop, before dumping from about 50mm to over 100mm of rain in an hour.

Many Japanese, including my wife, seem over-anxious about lightning; I grew up where lightning was rare, then first experienced a serious electrical storm in France, which I watched with a beer in my hand from a hotel terrace, but now I’m not even allowed to look out the window…

Here’s some thunder and lightning everyone loves – Kaminari (thunder/lightning) Gate at Sensouji Temple in Asakusa. The large lantern guarded by the God of Lightning is a gift from Matsushita (now Panasonic) Electrical, and the very first product of the company was an adapter for light sockets that provided a plug along with the bulb, so might say the God of Lightning is guarding a gift from the God of Lighting.

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How Japanese handle hayfever

Compared to recent years, how are your hayfever symptoms this year? graph of japanese recently reported on a survey by Weather News, entitled the first survey into hayfever.


Between the 8th and 12th of March 2013 over 40,000 users of the Weather News web site completed a public survey. No further information was presented, including how many people actually reported having hayfever, although it might be that only hayfever sufferers completed the survey.

My hayfever actually started at the end of December, and I had to go to the doctor. However, it soon went away, then restarted at the start of March, and seems to come and go, but definitely lighter symptoms than last year, and I think we’ve now passed the worse of the cedar pollen.
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