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asus5635|2016-9-9 14:25
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JTWC 06Z維持評級LOW
B. TROPICAL DISTURBANCE SUMMARY:
(2) THE AREA OF CONVECTION (INVEST 99W) PREVIOUSLY LOCATED
NEAR 25.8N 152.6E, IS NOW LOCATED NEAR 25.8N 152.6E, APPROXIMATELY
600 NM EAST OF IWO-TO, JAPAN. ANIMATED MULTISPECTRAL SATELLITE
IMAGERY DEPICTS AN ELONGATED SYSTEM WITH ISOLATED DEEP CONVECTION
ALONG THE NORTHEASTERN PERIPHERY. A 090011Z ASCAT PASS SHOWS AN OPEN
WAVE WITH STRONG GRADIENT WINDS TO THE NORTH AND VERY WEAK WINDS TO
THE SOUTH. A 090136Z GPM 89GHZ MICROWAVE IMAGE DEPICTS FRAGMENTED
CONVECTION ALONG THE NORTHEASTERN SIDE OF AN ELONGATED SYSTEM. THE
DISTURBANCE IS LOCATED IN A MARGINAL ENVIRONMENT WITHIN THE
SUBSIDENT REGION OF A TUTT CELL TO THE NORTHWEST, WITH MODERATE (15-
20 KNOT) VERTICAL WIND SHEAR. DYNAMICAL GUIDANCE IS MIXED WITH SOME
MODELS SHOWING WEAK DEVELOPMENT OVER THEN NEXT 24-36 HOURS AS THE
DISTURBANCE TRACKS NORTH-NORTHWEST, HOWEVER, THE WINDOW FOR THIS
DEVELOPMENT IS VERY SHORT DUE TO STRONG WESTERLIES TO THE NORTH.
MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 15 TO 20 KNOTS.
MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1010 MB. DUE TO
THE DISORGANIZED LLCC AND MODERATE ENVIRONMENT, THE POTENTIAL FOR
THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24
HOURS IS LOW.
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