JMA Bulletin at 00:55 UTC Oct. 28, 2009

JMA has now officially upgraded Mirinae to Typhoon Category as it conitnue to intensify. It seems the STR is expected to further weaken in the next few days allowing Mirinae to go up a bit than the previouslt forecasted track.

TY 0921 (Mirinae)


Issued at 00:55 UTC, 28 October 2009

Analyses at 28/00 UTC

Scale -

Intensity Strong

Center position N16°10'(16.2°)

E138°30'(138.5°)

Direction and speed of movement W 30km/h(17kt)

Central pressure 965hPa

Maximum wind speed near the center 35m/s(70kt)

Maximum wind gust speed 50m/s(100kt)

Area of 50kt winds or more Wide 110km(60NM)

Area of 30kt winds or more Wide 330km(180NM)



Forecast for 29/00 UTC

Intensity Strong

Center position of probability circle N15°55'(15.9°)

E132°50'(132.8°)

Direction and speed of movement W 25km/h(14kt)

Central pressure 950hPa

Maximum wind speed near the center 40m/s(80kt)

Maximum wind gust speed 60m/s(115kt)

Radius of probability circle 140km(75NM)

Storm warning area Wide 280km(150NM)



Forecast for 30/00 UTC

Intensity Very Strong

Center position of probability circle N16°10'(16.2°)

E127°35'(127.6°)

Direction and speed of movement W 25km/h(13kt)

Central pressure 940hPa

Maximum wind speed near the center 45m/s(85kt)

Maximum wind gust speed 60m/s(120kt)

Radius of probability circle 260km(140NM)

Storm warning area Wide 430km(230NM)



Forecast for 31/00 UTC

Intensity Very Strong

Center position of probability circle N16°10'(16.2°)

E123°00'(123.0°)

Direction and speed of movement W 20km/h(11kt)

Central pressure 935hPa

Maximum wind speed near the center 45m/s(85kt)

Maximum wind gust speed 60m/s(120kt)

Radius of probability circle 390km(210NM)

Storm warning area Wide 560km(300NM)