|
AN AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 17.1N
159.0E, IS NOW LOCATED NEAR 18.3N 149.8E, APPROXIMATELY 465 NM
NORTHEAST OF GUAM. THIS LOW LEVEL DISTURBANCE HAS CONSTRUC-
TIVELY ALIGNED WITH AN AREA OF FAVORABLE RADIAL OUTFLOW AND
LOW VERTICAL WIND SHEAR ALOFT. IN ADDITION, A TROPICAL UPPER-
LEVEL TROPOSPHERIC TROUGH CELL TO THE EAST IS POSITIONED TO
ENHANCE POLEWARD EXHAUST. RECENT MICROWAVE AND MULTISPECTRAL
IMAGERY INDICATE THAT THE LOW LEVEL SIGNATURE IS STILL WEAK
AND ILL-DEFINED, BUT AN OLDER 250822Z QUIKSCAT IMAGE DOES SHOW
A 10 TO 15 KNOT CIRCULATION. MAXIMUM SUSTAINED SURFACE WINDS
ARE ESTIMATED AT 10 TO 15 KNOTS. MINIMUM SEA LEVEL PRESSURE IS
ESTIMATED TO BE NEAR 1006 MB. THE POTENTIAL FOR THE DEVELOPMENT
OF A SIGNIFICANT TROPICAL CYCLONE IS UPGRADED TO FAIR BASED ON
THE IMPROVED UPPER LEVEL ENVIRONMENT.
JTWC升格為FAIR了
進展的還不錯
期望明早已前TCFA!!
|
