000
AXPZ20 KNHC 011550
TWDEP 

TROPICAL WEATHER DISCUSSION                                    
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
1605 UTC FRI MAY 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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC. 

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

MONSOON TROUGH FROM 06N96W TO 10N111W TO 06N133W TO 07N136W TO 
06N138W TO 06N140W. CONVECTIVE PRECIPITATION...SCATTERED 
MODERATE TO ISOLATED STRONG FROM 02N TO 09N BETWEEN 81W AND 
87W...FROM 11N TO 13N BETWEEN 93W AND 98W...FROM 02N TO 06N 
BETWEEN 101W AND 108W...FROM 03N TO 07N BETWEEN 109W AND 
113W...FROM 10N TO 12N BETWEEN 113W AND 115W...AND WITHIN 30 NM 
EITHER SIDE OF LINE FROM 06N133W TO 03N136W. ISOLATED MODERATE 
ELSEWHERE WITHIN 180 NM TO THE NORTH OF THE MONSOON TROUGH...AND 
WITHIN 240 NM TO THE SOUTH OF THE MONSOON TROUGH...FROM 120W 
WESTWARD.

...DISCUSSION...    

AN UPPER LEVEL TROUGH PASSES THROUGH 35N130W TO A CYCLONIC 
CIRCULATION CENTER THAT IS NEAR 30N136W...BEYOND 26N140W. 
COMPARATIVELY DRIER AIR IN SUBSIDENCE IN WATER VAPOR IMAGERY... 
AND BROAD CYCLONIC WIND FLOW...COVER THE EASTERN PACIFIC OCEAN 
FROM 18N NORTHWARD. 
 
THE FAR NORTHWESTERN CORNER AND NORTH CENTRAL SECTIONS WILL 
EXPERIENCE WIND SPEEDS OF 20 KNOTS OR LESS...AND SEA HEIGHTS 
REACHING 8 FEET...FOR THE NEXT 2 DAYS. THE NORTHEASTERN PART OF 
THE AREA ALSO WILL EXPERIENCE THE SAME CONDITIONS OF 20 KNOTS OR 
LESS AND 8 FOOT SEA HEIGHTS FOR DAY 3. THE WINDS AND SEAS 
DISAPPEAR COMPLETELY FOR TUESDAY. SEA HEIGHTS OF 8 TO 9 FEET 
WITH WIND SPEEDS OF 20 KNOTS OR LESS RETURN TO THE NORTHEAST AND 
NORTH CENTRAL SECTIONS ON WEDNESDAY.

AN AREA OF SWELL...FROM THE SOUTH AND SOUTHWEST...THAT REACHES 8 
FEET AND HIGHER...STARTS TODAY FROM 10N SOUTHWARD BETWEEN 85W 
AND 132W. THE MAXIMUM SWELL HEIGHTS WILL RANGE FROM 8 TO 12 FEET 
FROM FRIDAY TO SATURDAY. THE SWELL OF 8 TO 9 FEET EVENTUALLY 
REACHES TO 24N FROM 132W EASTWARD BY SATURDAY MORNING...AND TO 
29N FROM 126W EASTWARD ON SUNDAY MORNING. THE SWELL HEIGHT WILL 
REACH 8 FEET FROM THE EQUATOR TO 30N BETWEEN 90W AND 120W ON 
MONDAY. THE SWELL HEIGHTS WILL BE LOWER THAN 8 FEET AFTER 
MONDAY. 

TRADE WIND NORTHEAST WIND FLOW OF 20 KNOTS OR LESS...AND 8 FOOT 
SEA HEIGHTS...COVER THE AREAS FROM 07N TO 19N FROM 123W 
WESTWARD...ON WEDNESDAY. 

A SURFACE RIDGE PASSES THROUGH 32N142W...TO 23N130W TO 17N112W.

...THE GULF OF TEHUANTEPEC...

NORTH TO NORTHEAST WINDS FROM 20 TO 30 KNOTS...AND 8 TO 10 FOOT 
SEA HEIGHTS WILL COVER THE AREA FROM 14N NORTHWARD BETWEEN 94W 
AND 96W...INCLUDING IN THE GULF OF TEHUANTEPEC...FOR THE NEXT 48 
HOURS. THE SEA HEIGHTS ON SUNDAY MORNING WILL RANGE FROM 8 TO 12 
FEET. THE WIND SPEEDS DIMINISH TO 20 KNOTS OR LESS...AND THE SEA 
HEIGHTS GO DOWN TO LESS THAN 8 FEET...STARTING ON SUNDAY 
AFTERNOON. THE WINDS AND SEAS REMAIN IN THIS WAY FOR THE NEXT 
FEW DAYS AFTER SUNDAY.

$$
MT