000
AXPZ20 KNHC 230227
TWDEP 

TROPICAL WEATHER DISCUSSION                                    
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
0405 UTC MON MAR 23 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0225 UTC. 

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

THE ITCZ EXTENDS FROM 04N103W TO 08N119W TO 07N126W TO 06N140W. 
SCATTERED MODERATE ISOLATED STRONG CONVECTION WAS NOTED WITHIN 
120 NM N OF THE ITCZ AXIS W OF 125W.

...DISCUSSION... 

W OF 110W...HIGH PRESSURE OF 1027 MB CENTERED NW OF THE AREA 
EXTENDS A RIDGE SE TO NEAR 16N106W. THE PRESSURE GRADIENT 
BETWEEN THIS AREA OF HIGH PRESSURE AND LOWER PRESSURE IN THE 
VICINITY OF THE ITCZ IS SUPPORTING MODERATE TO FRESH TRADES N OF 
THE ITCZ TO AROUND 20N AND W OF 120W. THIS AREA OF FRESH TRADES 
IS PRODUCING SEAS TO 8 FT FROM 08N TO 10N W OF 132W. THE AREA OF 
HIGH PRESSURE WILL SHIFT EASTWARD...TO A POSITION N OF THE AREA 
BY MON. THE AREA OF HIGH PRESSURE COMBINED WITH TROUGHING OVER 
MEXICO WILL HELP FOR FRESH TO STRONG WINDS TO DEVELOP OFF THE 
COAST OF BAJA CALIFORNIA BY EARLY MON MORNING. THIS AREA OF 
FRESH TO STRONG WINDS WILL CONTINUE THROUGH TUE EVENING WITH 
ASSOCIATED SEAS REACHING NEAR 10 FT. A FRESH SET OF NW SWELLS 
HAS MOVED INTO THE NW WATERS WITH SEAS PEAKING NEAR 10 FT OVER 
THESE WATERS. THE SWELL WILL GRADUALLY SUBSIDE WHILE SPREADING S 
AND E OVER THE NEXT COUPLE OF DAYS. 

E OF 110W...A WEAK PRESSURE PATTERN ACROSS THE REGION IS 
MAINTAINING GENERALLY LIGHT WINDS AND SEAS BELOW 6 FT IN MOST 
AREAS. HIGH PRESSURE WILL BUILD OVER THE GULF OF MEXICO LATE 
MONDAY. THIS WILL PRODUCE A PRESSURE GRADIENT WHICH WILL COMBINE 
WITH PEAK NOCTURNAL DRAINAGE TO RESULT IN A BRIEF PERIOD OF 
FRESH TO STRONG GAP WINDS IN THE GULF OF TEHUANTEPEC EARLY TUE 
MORNING BEFORE DIMINISHING BELOW 25 KT BY TUE AFTERNOON. A 
LARGE SET OF SW SWELLS IS EXPECTED TO MOVE ACROSS THE EQUATOR W 
OF THE GALAPAGOS ISLANDS ON TUESDAY. WAVE HEIGHTS TO AT LEAST 7 
FT ARE EXPECTED TO REACH THE MEXICAN AND CENTRAL AMERICAN COASTS 
BY LATE WEDNESDAY OR EARLY THURSDAY.

$$
AL