000
AXPZ20 KNHC 270930
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC TUE MAY 27 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.

...SPECIAL FEATURES...                                  
HURRICANE AMANDA IS CENTERED NEAR 14.2N 112.2W AT 27/0900 UTC OR 
ABOUT 540 NM SSW OF THE SOUTHERN TIP OF BAJA CALIFORNIA MOVING 
NNW AT 4 KT. ESTIMATED MINIMUM CENTRAL PRESSURE IS 954 MB. 
MAXIMUM SUSTAINED WIND SPEED IS 110 KT WITH GUSTS TO 135 KT. 
NUMEROUS MODERATE AND SCATTERED STRONG CONVECTION IS OCCURRING 
WITHIN 90 NM OF CENTER. SCATTERED MODERATE IS OCCURRING 
ELSEWHERE FROM 11N TO 18N BETWEEN 108W AND 114W. SEE LATEST NHC 
FORECAST/ADVISORY UNDER AWIPS/WMO HEADERS MIATCMEP1/WTPZ21 KNHC 
FOR MORE DETAILS.
  
...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...           
THE MONSOON TROUGH IS ALONG 08N78W TO 08N91W TO 12N103W...AND 
FROM 10N114W TO 1009 LOW PRESSURE NEAR 08N127W TO 05N133W. THE 
INTERTROPICAL CONVERGENCE ZONE AXIS EXTENDS FROM 05N133W TO 
05N140W. SCATTERED MODERATE CONVECTION IS FROM 05N TO 10N 
BETWEEN 92W AND 96W...FROM 07N TO 12N BETWEEN 103W AND 
109W...AND FROM 05N TO 10N BETWEEN 117W AND 125W.

...DISCUSSION...                                            
ASIDE FROM THE INTRIGUE OF HURRICANE AMANDA...THE REMAINDER OF 
THE BASIN IS FAIRLY TRANQUIL WITH REGARDS TO ANY SIGNIFICANT 
AREAS OF WINDS GREATER THAN 20 KT. HOWEVER...OUTSIDE OF THE 
INFLUENCE OF HURRICANE AMANDA...TWO AREA OF SEAS 8 FT OR GREATER 
EXISTS...ONE OVER THE NORTHERN TIER WATERS AND THE OTHER TO THE 
SOUTH-SOUTHEAST OF AMANDA. THE AREA ACROSS THE NORTHERN WATERS 
IS DUE TO THE COMBINATION OF PERSISTENT NE WINDS OF 20 KT AND 
THE ASSOCIATED NE WIND WAVES ALONG WITH SW CROSS-EQUATORIAL 
SWELL WHICH EVENTUALLY MIXES WITH SOUTHEASTERLY SWELL GENERATED 
FROM AMANDA. THE MIXED SWELL GENERATES AN AREA OF 8 FT SEAS  
GENERALLY N OF 29N BETWEEN 123W AND 126W AT 27/0600 UTC THAT 
EXPANDS TO COVER MUCH OF THE AREA N OF 23N W OF 120W BY EARLY 
THURSDAY TO A RANGE OF MAXIMUM SEAS OF 8 TO 11 FT. THE OTHER 
AREA OF SEAS ABOVE 8 FT IS GENERATED FROM CROSS-EQUATORIAL SW 
SWELL COMBINING WITH N-NW SWELL EMANATING FROM AMANDA.

OTHERWISE...AMANDA REMAINS ON THE WESTERN PERIPHERY OF AN UPPER 
LEVEL ANTICYCLONIC CIRCULATION CENTERED OVER SOUTHERN MEXICO 
NEAR 17N97W. MIDDLE TO UPPER LEVEL MOISTURE REMAINS PREVALENT 
FROM THE MONSOON TROUGH REGION N OF 05N TO 25N BETWEEN 96W AND 
116W...VERY NEAR THE WESTERN EDGE OF MOISTURE ASSOCIATED WITH 
AMANDA. TO THE NW OF AMANDA...AN UPPER LEVEL LOW IS CENTERED 
NEAR 24N125W PROVIDING A SMALL WINDOW FOR SOUTH-SOUTHWESTERLY 
WIND SHEAR TO EFFECT THE STRENGTH OF THE HURRICANE. 
HOWEVER...THE UPPER LEVEL LOW IS FORECAST TO LIFT NORTH-
NORTHEASTWARD AND WEAKEN BY LATE TUESDAY INTO EARLY WEDNESDAY 
MOVING IN OVER THE SW CONUS BY THURSDAY. 
 
$$
HUFFMAN