The Japan Meteorological Agency introduced a twister warning at 12:28 p.m., saying that gusts equivalent to a twister are believed to have occurred within the northern a part of the principle island of Okinawa Prefecture.
There is a danger that extra gusts of wind, together with tornadoes, will happen within the northern a part of the principle island of Okinawa Prefecture.
Wind gusts equivalent to tornadoes happen when a well-developed cumulonimbus cloud approaches.
The Japan Meteorological Agency advises that if there are indicators that cumulonimbus clouds are approaching, equivalent to thunder, sudden wind adjustments, or hail, watch out of gusty winds and search security inside a sturdy constructing.

