97w 98w 99w(TCFA) - 颱風討論

97w︰目前差不多要進入越南了，大勢已去。


98w︰昨天剛跨越換日線進入西北太平洋，看起來也不像是EC未來出現的擾動，
說不定很快就消失在洋面上了(未來會先遭遇強風切區域)。


99w︰已經發布 TCFA，雖然編號比 98w 晚，實際上已經存在一段時間，未來將朝
日本方向移動，不過應該接觸不到日本就轉向了。

ATCF：http://199.9.2.143/atcf_web/images/wp992008.gif
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1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN
120 NM EITHER SIDE OF A LINE FROM 21.7N 150.6E TO 27.7N 148.7E
WITHIN THE NEXT 12 TO 24 HOURS. AVAILABLE DATA DOES NOT JUSTIFY
ISSUANCE OF NUMBERED TROPICAL CYCLONE WARNINGS AT THIS TIME.
WINDS IN THE AREA ARE ESTIMATED TO BE 18 TO 23 KNOTS. METSAT IM-
AGERY AT 180600Z INDICATES THAT A CIRCULATION CENTER IS LOCATED
NEAR 21.9N 150.5E. THE SYSTEM IS MOVING NORTH-NORTHWESTWARD AT
08 KNOTS.
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JMA：
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TROPICAL DEPRESSION 1008 HPA
AT 23.0N 149.8E WESTSOUTHWEST OF MINAMITORISIMA MOVING NORTHWEST 12KNOTS.
POSITION POOR.
MAX WINDS 30 KNOTS NEAR CENTER.
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CWB：
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中央氣象局氣象報告 ９７年１０月１８日２２時３０分發布
１０月１８日２０時天氣概況：

熱帶性低氣壓１００６百帕，在北緯２３．５度，東經１５０度，即在關島北方
之海面上，向北北西移動，時速２０公里。
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