Monsoon (baiu) has come to Amami Islands

Today JMA announced the monsoon (baiu) has come to Amami islands, southwest side of Japan.

Attached is total precipitable water and wind vector at 700 hPa of 12UTC 18 May 2015 from NCEP analysis, visualized at earth.nullschool.net.  Blue area illustlates most flow from Indian Ocean reaching Japan.

The southwesterly flow of moist air is also visible in our operational chart, AUXT85 of the same time.