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Eastern Pacific Tropical Weather Discussion (Text)



000
AXPZ20 KNHC 070915
TWDEP 

TROPICAL WEATHER DISCUSSION                                     
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
1005 UTC THU MAY 07 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. 

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

ITCZ FROM 5N87W TO 7N105W TO 1009 MB LOW NEAR 4N120W TO TROUGH 
9N132W TO 3N140W. SCATTERED MODERATE TO STRONG CONVECTION FROM 
8N-12N BETWEEN 111W-117W AND FROM 8N-11N BETWEEN 131W-135W.

...DISCUSSION...

AN UPPER LEVEL TROUGH EXTENDS FROM 32N127W TO 27N137W. A BROAD 
UPPER LEVEL RIDGE IS SE OF THE TROUGH AND DOMINATES MUCH OF  
DISCUSSION AREA WITH AN ANTICYCLONIC CIRCULATION CENTERED NEAR 
11N111W. A 95 KT JETSTREAM ACROSS THE NORTHERN PERIPHERY OF THE 
RIDGE EXTENDS FROM 24N120W ACROSS CENTRAL BAJA CALIFORNIA INTO 
NORTHERN MEXICO. STRONG SUBSIDENCE WITH DRY AIR AT THE MIDDLE 
AND UPPER LEVELS IS N OF 20N W OF 115W.

THE HIGH PRES NW OF THE DISCUSSION AREA HAS BECOME STRONGER AND 
THE PRESSURE GRADIENT HAS TIGHTENED...LEADING TO NE WINDS 20-25 
KT FROM 11N-16N BETWEEN 124W-138W WITH SEAS 8-10 FT. THE NE 
WINDS 20-25 KT WILL BE FROM 11N-15N W OF 130W FRI NIGHT. AN AREA 
OF NW SWELL TO 8 FT ACROSS THE NORTHERN PORTION OF THE AREA N OF 
28N BETWEEN 119W-124W...WILL SUBSIDE TO LESS THAN 8 FT FRI NIGHT.

$$ 
DGS

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Page last modified: Thursday, 07-May-2015 09:15:43 UTC