MUST TO KNOW #5: Haruichiban

Haruichibann blew over Japan last week.

Haruichiban (Haru=spring/春, Ichiban=first/一番) is a strong southerly wind (In Japan, wind speed should be more than. 8m/sec) recorded first time for the year between "Risshun（around 4th February）" and "Shunbun （vernal equinox: around 21st March）.

It  blows on a fine day with a temprerature considerably higher than the previous day.

High speed wind is generated through the formation of low pressure in north-west.


This year, Haruichiban was observed in Tokyo on the 25th of February. On that day, the temperature rose up to 19 degrees (in celcius).

Haruichiban tells us that spring is just around the corner.