000 AXPZ20 KNHC 041604 TWDEP TROPICAL WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 1605 UTC WED APR 4 2018 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 1515 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A SURFACE TROUGH EXTENDS FROM 08N83W TO 07N90W TO 02N104W. THE ITCZ EXTENDS FROM 02N104W TO 04N120W TO 06N140W. SCATTERED MODERATE CONVECTION IS WITHIN 60 NM EITHER SIDE OF THE TROUGH AND FROM 03N TO 11N W OF 123W. ...DISCUSSION... OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A WEAK RIDGE EXTENDS SE ACROSS THE OFFSHORE FORECAST WATERS INTO THE REVILLAGIGEDO ISLANDS, MAINTAINING MAINLY GENTLE TO MODERATE NW WINDS, AND SEAS OF 4-6 FT. LITTLE CHANGE IN MARINE CONDITIONS IS EXPECTED THROUGH SAT MORNING. THE RIDGE W OF THE AREA WILL MOVE ENE DURING THE WEEKEND WHILE STRENGHTENING THUS INCREASING THE PRESSURE GRADIENT OVER THE NE FORECAST WATERS. THIS EVENT WILL LEAD TO THE DEVELOPMENT OF FRESH TO STRONG NW WINDS OFF BAJA CALIFORNIA NORTE WITH SEAS BUILDING TO 8 FT BY SUN MORNING. WINDS AND SEAS WILL DIMINISH MON AS THE RIDGE WEAKENS. FARTHER SOUTH, A WEAK PRESSURE PATTERN IS SUPPORTING GENERALLY LIGHT WINDS IN THE GULF OF TEHUANTEPEC. HIGH PRESSURE OVER THE CENTRAL UNITED STATES WILL SHIFT ESE TO THE SE CONUS BY THU MORNING THUS SUPPORTING A BRIEF EVENT OF FRESH TO STRONG GAP WINDS IN THE GULF OF TEHUANTEPEC THROUGH THE EVENING HOURS. SEAS WILL BE IN THE 6-8 FT RANGE DURING THIS PERIOD. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... GULF OF PAPAGAYO: MODERATE TO LOCALLY FRESH NE TO E GAP WINDS AND 3- 5 FT SEAS WILL PREVAIL THROUGH THE ENTIRE FORECAST PERIOD. GULF OF PANAMA: GENTLE TO MODERATE N-NE WINDS WILL PREVAIL TODAY, WITH 4-5 FT SEAS IN SW SWELL. LIGHT AND VARIABLE WINDS ARE EXPECTED THEREAFTER. ELSEWHERE, LIGHT AND GENTLE WINDS ARE GENERALLY EXPECTED, WITH BETTER DEFINED SOUTHERLY WINDS DEVELOPING S OF 07N BY THU. SEAS OF 5-7 FT IN SW SWELL WILL SUBSIDE TO 3-5 FT WED THROUGH FRI. REMAINDER OF THE AREA... A BROAD RIDGE DOMINATES THE FORECAST REGION ASSOCIATED WITH HIGH PRESSURE LOCATED NEAR 29N126W. THE HIGH IS EXPECTED TO REMAIN NEARLY STATIONARY DURING THE NEXT 48 HOURS. THE GRADIENT BETWEEN THE RIDGE AND LOWER PRESSURES IN THE VICINITY OF THE ITCZ WILL PRODUCE MODERATE TO LOCALLY FRESH TRADE WINDS AND SEAS TO NEAR 8 FT, PARTICULARLY ACROSS THE WATERS FROM 08N TO 15N W OF 125W LATER THIS WEEK. A COLD FRONT APPROACHING 140W WILL BRING AN INCREASE IN WINDS AND SEAS ACROSS THE FAR NW WATERS WED. EXPECT FRESH TO STRONG SOUTHERLY WINDS AND SEAS OF 8-9 FT AHEAD OF THE FRONT AND NW OF A LINE FROM 30N137W TO 28N140W TODAY AND SAT. $$ RAMOS