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Tropical Weather Discussion

000 

abpw10 pgtw 300600
msgid/genadmin/joint typhoon wrncen Pearl Harbor hi//
subj/significant tropical weather advisory for the western and
/South Pacific oceans/300600z-310600zjul2014//
ref/a/msg/joint typhoon wrncen Pearl Harbor hi/300151zjul2014//
ref/b/msg/joint typhoon wrncen Pearl Harbor hi/292251zjul2014//
narr/ref a is a tropical cyclone warning. Ref a is a tropical
/cyclone formation alert.//
Rmks/
1. Western North Pacific area (180 to Malay Peninsula):
   a. Tropical cyclone summary:
      (1) at 300000z, tropical storm 11w (Halong) was located near 
13.9n 145.5e, approximately 37 nm east-northeast of andersen AFB, 
Guam and had tracked west-northwestward at 07 knots over the past 
six hours. Maximum sustained surface winds were estimated at 55 
knots gusting to 70 knots. See ref a (wtpn31 pgtw 300300 cor) for 
further details.
      (2) no other tropical cyclones.
   B. Tropical disturbance summary:
      (1) the area of convection (monsoon depression) previously 
located near 19.9n 130.5e is now located near 22.7n 129.9e, 
approximately 225 nm south-southeast of Kadena air base, Okinawa. 
Animated multispectral satellite imagery depicts a well-defined, 
fully-exposed low-level circulation center (LLCC) with deep 
convection displaced over the southern and eastern periphery of a 
monsoon depression. A 300124z metop-b 89 ghz image depicts a very 
broad LLCC with broad convective banding and no deep convection over 
the core. A 300029z ascat image continues to depict extensive 30 to 
35-knot peripheral winds with weak core winds. The total 
precipitable water imagery shows a large (almost 700 nm in 
diameter), fairly symmetric envelope of deep moisture. Upper-level 
analysis indicates the system is located in an area of low to 
moderate vertical wind shear and good equatorward outflow. Maximum 
sustained surface winds are estimated at 20 to 25 knots. Minimum sea 
level pressure is estimated to be near 996 mb. The potential for the 
development of a significant tropical cyclone within the next 24 
hours remains high. See ref a (wtpn21 pgtw 292300) for further 
details.
      (2) no other suspect areas.
2. South Pacific area (west coast of South America to 135 east):
   a. Tropical cyclone summary: none.
   B. Tropical disturbance summary: none.//
Nnnn

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Director of Meteorology, Weather Underground
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