000
AXPZ20 KNHC 311757
TWDEP 

TROPICAL WEATHER DISCUSSION                                      
NWS NATIONAL HURRICANE CENTER MIAMI FL                           
1605 UTC FRI MAY 31 2013

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... 

MONSOON TROUGH EXTENDS FROM 13N113W TO 09N122W THEN ITCZ TO 
09N130W TO 06N140W.  NO SIGNIFICANT CONVECTION NOTED. 

...DISCUSSION... 
BROAD UPPER LEVEL RIDGE COVER BASIN E OF 120W WHILE SHARP TROUGH FROM
32N118W TO 06N136W SEPARATES IT FROM NEXT UPSTREAM RIDGE.  VERY DRY
AND STABLE AIR MASS W OF 105W PREVENTS ANY SIGNIFICANT CONVECTION EVEN
ALONG ITCZ/ MONSOON TROUGH. 

...AT THE LOWER LEVELS...
WEAK DISSIPATING LOW PRES 1010 MB AT 15N108W...PREVIOUSLY TRACKED FOR
TROPICAL FORMATION...LACKS ANY CONVECTION AND IS NOT LIKELY TO 
DEVELOP ANY.  

LARGE SURFACE HIGH PRES CENTER AT 34N136W RETREATS W AND STRENGTHENS
WITH AN INCREASE IN WINDS ALONG COAST OF CALIFORNIA.  N-NW SWELLS 
EXPECTED TO IMPACT SEA HEIGHTS S OF 30N E OF 120W BUT EVENTUALLY 
EXTEND TO WATERS N OF 25N.  GLOBAL MODELS ARE IN GOOD AGREEMENT WITH 
HIGH PRES MOVE AND STRENGTH THROUGH NEXT TWO DAYS. 
    
REMNANTS OF BARBARA NOW OVER GULF OF MEXICO JUST N OF TEHUANTEPEC
GAP WITH MINOR CONVECTION STILL LEFT OVER WITHIN GULF OF TEHUANTEPEC
BUT NO SIGNIFICANT WIND OR SEAS.

$$ 
WALLY BARNES