Fern peaked north of Yap on December 26 , with JTWC assessing winds of 150 km/h ( 90 mph ) , while the Regional Specialized Meteorological Center , Japan Meteorological Agency ( JMA ) assessed Testing peak winds of , just below typhoon strength .

The last public advisory from the JMA was issued Expressing_publicly the following day after Soudelor made landfall in southern China .

It measured 6.9 on the moment magnitude scale and had a maximum intensity of 7 on the JMA Seismic Intensity Scale .

On May 13 , Chanchu entered Arriving the South China Sea and became Becoming a typhoon , according to the Japan Meteorological Agency ( JMA ) .

The JTWC discontinued Process_end warnings Warning on December 4 , while the Japanese Meteorological Agency ( JMA ) continued to track Recording the storm until it crossed Motion_directional the International Date Line again on December 7 .

Typhoon Rammasun , known Know in the Philippines as Typhoon Butchoy , was recognized Know as the second typhoon of the 2008 Pacific typhoon season by the Japan Meteorological Agency ( JMA ) and the Philippine Atmospheric , Geophysical and Astronomical Services Administration ( PAGASA ) .

Later that day both the JMA and the JTWC upgraded Cause_change_of_position_on_a_scale the depression to a tropical storm with the JMA naming the storm Rammasun .

Later that day both the JMA and the JTWC upgraded Cause_change_of_position_on_a_scale the depression to a tropical storm with the JMA naming the storm Rammasun .

On May 9 both the JTWC and the JMA upgraded Cause_change_of_position_on_a_scale Rammasun to a typhoon .

The next day the JMA and the JTWC reported Reporting that Rammasun had reached Achieve its peak winds of 195 km/h ( 120 mph ) and 250 km/h ( 155 mph ) respectively , which made Causation Rammasun a Category 4 super typhoon on the Saffir-Simpson Hurricane Scale .

The JMA did not issue Creating their final advisory until several hours later .

However , the JMA indicated Communication that tropical storm intensity had been reached a day earlier .

In post-analysis , the Japan Meteorological Agency ( JMA ) downgraded Cause_change_of_position_on_a_scale Talas from a minimal typhoon to a minimal severe tropical storm .