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Eastern Pacific Tropical Weather Discussion (Text)



000
AXPZ20 KNHC 010908
TWDEP 

TROPICAL WEATHER DISCUSSION                                     
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
1005 UTC WED JUL 01 2015

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. 

...TROPICAL WAVES...

TROPICAL WAVE FROM 4N-13N ALONG 92W MOVING W 15 KT. NO 
SIGNIFICANT CONVECTION. 

TROPICAL WAVE FROM 8N-16N ALONG 102W MOVING W 15 KT. ISOLATED 
SHOWERS ARE FROM 11N-13N BETWEEN 101W-104W

TROPICAL WAVE FROM 6N-15N ALONG 129W MOVING W 15 KT. SCATTERED 
MODERATE TO STRONG CONVECTION FROM 9N-13N BETWEEN 127W-133W.

TROPICAL WAVE FROM 7N-15N ALONG 139W MOVING W 15-20 KT. NO 
SIGNIFICANT CONVECTION.

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

ITCZ FROM 6N94W TO 8N120W TO 8N129W 9N138W. SCATTERED TO STRONG 
CONVECTION FROM 4N-12N BETWEEN 118W-134W.

...DISCUSSION...

AN UPPER LEVEL TROUGH ACROSS THE FAR NW PORTION OF THE 
DISCUSSION AREA WITH AXIS FROM 32N136W TO 27M140W. A NARROW 
UPPER RIDGE FROM 30N132W TO 20N135W SEPARATES THE TROUGH FROM A 
LARGE UPPER LEVEL CYCLONIC CIRCULATION CENTERED NEAR 24N122W 
WITH UPPER TROUGH EXTENDING TOWARDS THE SOUTHERN TIP OF BAJA 
CALIFORNIA. STRONG SUBSIDENCE WITH DRY AND STABLE AIR AT THE 
MIDDLE AND UPPER LEVELS IS FROM 17N-25N BETWEEN 115W-130W. 
DIVERGENT FLOW ALOFT E OF THE TROUGH IS ENHANCING CONVECTION 
FROM 4N-12N BETWEEN 118W-134W.

A WEAK SURFACE RIDGE ACROSS NORTHERN PORTION OF THE AREA N OF 
18N W OF 120W. AN AREA OF NE WINDS 15-20 KT FROM 11N-18N. 
OTHERWISE WINDS 15 KT OR LESS ACROSS THE AREA...EXCEPT IN THE 
GULF OF PAPAGAYO.                                

GULF OF PAPAGAYO...ELY WINDS 20-25 KT WINDS WITH SEAS WILL TO 9  
FT. THE WINDS WILL DECREASE TO 20 KT OR LESS AND SEAS LESS THAN 
8 FT BY THU NIGHT.

$$ 
DGS

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Page last modified: Wednesday, 01-Jul-2015 09:08:58 UTC