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Eastern Pacific Tropical Weather Discussion (Text)



000
AXPZ20 KNHC 200911
TWDEP 

TROPICAL WEATHER DISCUSSION                                      
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
1005 UTC SUN OCT 19 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 
02900 UTC.                       

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...           

MONSOON TROUGH FROM 09N84W TO LOW PRES NEAR 9N89W 1008 MB TO 
15N95W TO LOW PRES NEAR 15N99W 1008 MB TO 10N170W. ITCZ FROM 
10N127W TO 9N140W. SCATTERED MODERATE ISOLATED STRONG 
CONVECTION FROM 7N-14N BETWEEN 123W-135W.

...DISCUSSION...

A DEEP LAYER TROUGH ALONG 138W N OF 26N SUPPORTS A WEAKENING 
COLD FRONT ACROSS THE NW PORTION OF THE DISCUSSION AREA FROM 
30N133W TO 25N140W. LARGE LONG PERIOD NW SWELL BEHIND THE FRONT 
WILL MOVE INTO THE AREA TODAY WITH SEAS REACHING 15-16 FT IN FAR 
NW PART TODAY. UPPER LEVEL SUPPORT FOR THE DYING FRONT WILL LIFT 
NE. FRONT WILL TRANSITION TO A TROUGH THIS AFTERNOON AND 
COMPLETELY DISSIPATE BY TUE MORNING. AREA OF HIGH SEAS WILL 
GRADUALLY SUBSIDE TUE AS THE SWELL PROPAGATES SE FURTHER AWAY 
FROM ITS SOURCE.

ELSEWHERE...A WEAK SURFACE RIDGE EXTENDS ACROSS NORTHERN WATERS 
W OF 115W...PRODUCING LIGHT TO MODERATE TRADE WINDS S OF 20N AND 
W OF 113W. A RIDGE WILL PERSIST SE OF THE FRONTAL TROUGH. LITTLE 
CHANGE IN MARINE CONDITIONS IS EXPECTED S OF THE RIDGE THROUGH 
TUE AFTERNOON.

$$
DGS


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Page last modified: Monday, 20-Oct-2014 09:11:16 UTC