我是不是看錯了? - 颱風討論

HURRICANE FELIX SPECIAL DISCUSSION NUMBER 10
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL062007
800 PM EDT SUN SEP 02 2007

REPORTS FROM A NOAA HURRICANE HUNTER AIRCRAFT INDICATE THAT FELIX
HAS INTENSIFIED AND IS NOW A >> CATEGORY FIVE HURRICANE.<< THE AIRCRAFT
REPORTED PEAK FLIGHT-LEVEL WINDS OF 152 KT...WITH PEAK SFMR WINDS
OF 142 KT IN THE SOUTHWEST QUADRANT. HIGHER SFMR WINDS WERE FOUND
IN THE NORTHEAST QUADRANT...UP TO 163 KT...BUT THESE MAY HAVE BEEN
CONTAMINATED BY GROUPEL. A DROPSONDE RELEASED IN THE SOUTHWEST
QUADRANT LANDED IN THE NORTHEAST QUADRANT...AND THIS DROP YIELDED A
SURFACE ESTIMATE OF 139 KT BASED ON THE LOWEST 150 M LAYER AVERAGE.
BASED ON THESE DATA...THE PEAK SURFACE WINDS ARE ESTIMATED TO BE AT
LEAST 145 KT. AN EYE SONDE MEASURED A SURFACE PRESSURE OF 936 MB
WITH SURFACE WINDS OF 24 KT. BECAUSE OF THE EXTREME TURBULENCE AND
GROUPEL THAT THE AIRCRAFT EXPERIENCED...THE MISSION IS BEING
ABORTED AND THE AIRCRAFT IS RETURNING TO ST. CROIX.

THIS SPECIAL ADVISORY IS BEING ISSUED TO UPDATE THE INITIAL AND
FORECAST INTENSITIES. NO OTHER CHANGES TO THE FORECAST ARE BEING
MADE. THIS SPECIAL ADVISORY IS BEING ISSUED IN LIEU OF THE
SCHEDULED INTERMEDIATE ADVISORY.


FORECAST POSITIONS AND MAX WINDS

INITIAL 03/0000Z 13.8N 72.9W 145 KT
12HR VT 03/0600Z 14.1N 74.5W 150 KT
24HR VT 03/1800Z 14.8N 78.0W 145 KT
36HR VT 04/0600Z 15.4N 81.1W 145 KT
48HR VT 04/1800Z 16.0N 83.5W 145 KT
72HR VT 05/1800Z 17.3N 87.7W 135 KT
96HR VT 06/1800Z 19.5N 91.5W 80 KT
120HR VT 07/1800Z 21.5N 95.0W 90 KT

是五級颶風嗎
怎麼一下子從二級跳五級?

--