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Tropical Weather Discussion

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axpz20 knhc 240911
twdep 

Tropical weather discussion
NWS National Hurricane Center Miami FL
1005 UTC Thu Apr 24 2014

Tropical weather discussion for the eastern Pacific Ocean from 
the Equator to 32n...east of 140w. The following information is 
based on satellite imagery...weather observations...radar...and 
meteorological analysis.

Based on 0600 UTC surface analysis and satellite imagery through 
0900 UTC. 

  
...Intertropical convergence zone/monsoon trough...

ITCZ from 7n82w to 8n90w to 5n118w to 2n140w. Scattered moderate 
to strong convection within 150 nm S of axis from 2n-8n and 
within 90 nm N and 60 nm S or axis from 117w-120w. 

...Discussion...                                       

A broad upper level ridge is across the NW portion of the 
discussion area N of 20n W of 120w. An upper level trough 
extends from northern Mexico across central Baja California SW 
to 21n118w. Strong subsidence with dry and stable air at the 
middle and upper levels is from 20n-30n between 115w-135w. A 75 
to 95 kt jetstream is from 18n117w to the coast of Mexico near 
21n105w. In the deep tropics an upper level anticyclonic 
circulation is centered near 9n106w. Upper level diffluence with 
the anticyclone is enhancing convection from 9n-14n between 
107w-114w.

A large surface ridge is N of 15n W of 110w. The pres gradient 
between the ridge and the ITCZ is tight enough for 15-20 kt 
trade winds and seas to 9 ft in NW swell from 8n-20n W of 120w. 
Large cross equatorial sly swell will spread across a large 
portion of the area mainly S of 15n within the next 24 to 48 
hours. Currently the large sly swell is confined to S of 5s 
between 105w-125w.

$$ 
Dgs


  
  
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