000 AXPZ20 KNHC 241532 TWDEP TROPICAL WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 1605 UTC SUN APR 24 2016 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 1430 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A TROUGH AXIS EXTENDS FROM 11N85W TO 09N92W. THE ITCZ EXTENDS FROM 08N96.5W TO 04N125W TO BEYOND 05N140W. WIDELY SCATTERED MODERATE TO STRONG CONVECTION NOTED FROM 06N TO 13N E OF 89W...AND FROM 05N TO 11.5N BETWEEN 93W AND 107W. SCATTERED MODERATE TO STRONG CONVECTION NOTED WITHIN 180-360 NM N OF ITCZ W OF 112W. ...DISCUSSION... N OF 15N E OF 120W... A SURFACE RIDGE EXTENDS S AND SE ACROSS THE AREA...FROM A 1033 MB HIGH NEAR 37N141W TO 14N106W. THIS RIDGE WILL GENERALLY REMAIN IN PLACE THROUGH THE END OF THE WEEK. BROAD TROUGHING IS LOCATED OVER THE SOUTHWESTERN UNITED STATES AND NW MEXICO. THE PRESSURE GRADIENT BETWEEN THIS TROUGHING AND THE RIDGE TO THE W IS SUPPORTING NEAR GALE FORCE NW WINDS OFFSHORE OF CENTRAL AND SOUTHERN CALIFORNIA. THESE WINDS ARE SEEPING INTO THE AREA N THIS MORNING...WITH NW TO N WINDS AROUND 20 KT N OF 28N BETWEEN 117W AND 125W AND ARE SUPPORTING FRESH NW SWELL OF 8-12 FT. THE WINDS WILL INCREASE TO GALE FORCE N OF THE 32N LATE TONIGHT INTO EARLY MON AS THE PRESSURE GRADIENT TIGHTENS...GRADUALLY DIMINISHING TUE THROUGH THE REMAINDER OF THE WEEK AS THE GRADIENT THEN SLACKENS. THIS WILL MAINTAIN A NEARLY CONTINUOUS STREAM OF NNW SWELL MOVING INTO THE NE WATERS AND ALONG THE PACIFIC COAST OF BAJA CALIFORNIA. A COLD FRONT WILL SWING THROUGH NW MEXICO AND THE NORTHERN GULF OF CALIFORNIA LATE TONIGHT INTO EARLY MON. MODEL GUIDANCE CONTINUES TO INDICATE FRESH TO STRONG SW-W WINDS AHEAD OF THE FRONT TONIGHT...WITH A BRIEF SURGE OF FRESH TO STRONG WINDS BEHIND THE FRONT MON NIGHT. SIMILAR CONDITIONS WILL BE POSSIBLE WED NIGHT INTO THU AS THE NEXT FRONT ROTATES THROUGH THE AREA. S OF 15N E OF 110W... LIGHT TO MODERATE SW-W ONSHORE FLOW IS EXPECTED THROUGH THE NEXT SEVERAL DAYS...BRIEFLY BECOMING OFFSHORE IN THE GULF OF PAPAGAYO DURING THE OVERNIGHT HOURS. AN IMPRESSIVE CROSS-EQUATORIAL SWELL WILL PROPAGATE INTO THE AREA FROM THE SW BEGINNING WED NIGHT WITH WAVE PERIODS OF 19-21 SECONDS ON THE LEADING EDGE. THIS SWELL IS EXPECTED TO REACH THE SW FACING PORTIONS OF THE GALAPAGOS ISLANDS THU AFTERNOON AND EVENING...THEN REACH THE PACIFIC COAST OF CENTRAL AMERICA ON FRI. COMBINED SEAS OF 6-9 FT ARE EXPECTED WITH THIS SWELL TRAIN...EXCEPT IN THE LEE SIDE SHADOW OF THE GALAPAGOS. ELSEWHERE FROM THE EQUATOR TO 32N E OF 140W... MIXED NW SWELL AND NE WIND WAVES WITH COMBINED SEAS OF 8-10 FT COVERS THE AREA N OF 06N AND NW OF A LINE FROM 05N126W TO 08N123WTO 15N130W TO 27N115.5W. MODERATE TO FRESH TRADES PREVAIL UNDER THE ABOVE MENTIONED NEARLY STATIONARY RIDGE. THE PARENT HIGH OF THIS RIDGE WILL MANAGE TO SHIFT TO THE SW REACHING NEAR 30N140W TUE NIGHT ALLOWING FOR TRADES AND SEAS TO LOWER SOMEWHAT IN THE NW PORTION CLOSEST TO THE HIGH. THE HIGH WILL BE REINFORCED IN THE WAKE OF A COLD FRONT WHICH WILL CLIP THE FAR NORTHERN DISCUSSION WATERS WED NIGHT WITH A NEW PULSE OF NW SWELL MOVING INTO THE AREA BEHIND IT FOR THE REMAINDER OF THE WEEK. $$ STRIPLING