Hurricane and Tropical Cyclones


Tropical Weather Discussion


abpw10 pgtw 230600
msgid/genadmin/joint typhoon wrncen Pearl Harbor hi//
subj/significant tropical weather advisory for the western and
/South Pacific oceans/230600z-240600zjul2014//
ref/a/msg/joint typhoon wrncen Pearl Harbor hi/230151zjul2014//
ampn/ref a is a tropical cyclone warning.//
1. Western North Pacific area (180 to Malay Peninsula):
   a. Tropical cyclone summary:
      (1) at 230000z, typhoon 10w (matmo) was located near 24.4n 
120.0e, approximately 92 nm west-southwest of Taipei, Taiwan, and 
had tracked northwestward at 14 knots over the past six hours. 
Maximum sustained surface winds were estimated at 70 knots gusting 
to 85 knots. See ref a (wtpn31 pgtw 230300) for further details.
      (2) no other tropical cyclones.
   B. Tropical disturbance summary:
      (1) the area of convection previously located near 12.8n 
137.7e, is now located near 13.5n 136.0e, approximately 275 nm north-
northwest of Yap. Animated multispectral satellite imagery depicts a 
highly elongated and poorly organized low level circulation center 
with limited flaring convection along the northwest periphery. Upper 
level analysis reveals an unfavorable environment as strong 
northeasterly vertical wind shear (20 to 30 knots) continues to 
hamper development. Model guidance continues to back off on the 
timing of the development for this system until past tau 48. Maximum 
sustained surface winds are estimated at 15 to 20 knots. Minimum sea 
level pressure is estimated to be near 1008 mb. Due to the continued 
unfavorable upper-level environment, the potential for the 
development of a significant tropical cyclone within the next 24 
hours is downgraded to low.
      (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.//

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Dr. Jeff Masters' Blog
By Dr. Jeff Masters, 11:42 AM EDT on July 22, 2014
Director of Meteorology, Weather Underground
(By Steve Gregory - Substituting for Dr. Masters who is on Vacation.)

Latest SAT and Radar imagery shows Typhoon MATMO approaching the Taiwanese east coast and is currently about 65 NM S-SE of Taipei. With a [...]

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