000 AXPZ20 KNHC 250330 TWDEP TROPICAL WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 0405 UTC TUE FEB 25 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 0300 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... THE ITCZ EXTENDS FROM 06N84W TO 03N99W TO 07N120W TO 06N130W TO 08NN140W. SCATTERED MODERATE CONVECTION IS NOTED WITHIN 90 NM NE OF LINE FROM 05N111W TO 09N117W. SIMILAR CONVECTION IS FROM 08N TO 11N BETWEEN 120W AND 123W. THE MONSOON TROUGH IS VERY WEAK S OF PANAMA AND COSTA RICA. ...DISCUSSION... AN UPPER LEVEL TROUGH IN THE NW PORTION OF THE DISCUSSION AREA EXTENDS FROM 32N131W TO 20N127W TO 09N127W. ABUNDANT MID TO UPPER LEVEL MOISTURE IS NOTED AHEAD OF THE TROUGH N OF 07N TO ABOUT 108W. A 95-120 KT JETSTREAM IS ON THE W SIDE OF THE TROUGH AND ENTERS THE REGION NEAR 29N140W THEN CONTINUES SE TO NEAR 22N132W. A BROAD UPPER LEVEL RIDGE REMAINS E OF THE TROUGH COVERING ROUGHLY THE AREA BETWEEN 100W AND 120W. A 90-100 KT JETSTREAM OVER THE TOP OF THE RIDGE EXTENDS FROM 23N124W TO NORTHERN BAJA CALIFORNIA AT 32N115W INTO NORTHERN MEXICO. A SHARP UPPER LEVEL TROUGH STRETCHES FROM SE MEXICO TO 10N97W THEN SE TO NEAR THE GALAPAGOS ISLANDS. A RIDGE DOMINATES THE REMAINDER OF THE FORECAST REGION...INCLUDING CENTRAL AMERICA WHERE MODERATE TO STRONG SUBSIDENCE IS NOTED. THE UPPER LEVEL TROUGH OVER THE NW PORTION OF THE AREA SUPPORTS A COUPLE OF COLD FRONTS ASSOCIATED WITH A STRONG EXTRATROPICAL CYCLONE LOCATED NW OF AREA. THE MAIN FRONT IS NOW CROSSING 30N140W. THIS FRONT IS FORECAST TO REACH FROM 30N136W TO 26N140W TUE MORNING...AND FROM FROM 30N133W TO 25N140W TUE EVENING WHILE WEAKENING. A NEW COLD FRONT WILL MOVE INTO THE FORECAST REGION TUE NIGHT REACHING FROM 30N133W TO 25N140W WED EVENING. A THIRD COLD FRONT IS EXPECTED TO APPROACH TO 30N140W THU NIGHT. MARINE GUIDANCE SUGGESTS STRONG TO NEAR GALE FORCE WINDS AHEAD AND BEHIND THE FRONT...BUT PARTICULARLY N OF 28N. A WEAK RIDGE ANCHORED BY A 1015 MB HIGH PRES LOCATED NEAR 22N122W DOMINATES THE WATERS N OF 15N BETWEEN 110W AND 130W. THIS SYSTEM IS FORECAST TO REMAIN NEARLY STATIONARY DURING THE NEXT 24 HOURS. A PAIR OF SURFACE TROUGHS ARE EMBEDDED WITHIN THE ITCZ. ONE EXTENDS FROM 11N119W TO 06N121W. AN EARLIER ASCAT PASS CLEARLY SHOWS THE WIND SHIFT ASSOCIATED WITH THIS TROUGH. SCATTERED SHOWERS AND ISOLATED TSTMS ARE NOTED AHEAD OF THE TROUGH AXIS. THE SECOND TROUGH LIES FROM 15N137W TO 10N140W WITH NO CONVECTION. LONG PERIOD NW SWELLS CONTINUE TO PROPAGATE SE ACROSS MOST OF THE WATERS W OF 110W. ANOTHER SET OF NW SWELL WILL REACH THE FAR NW CORNER OF THE FORECAST AREA EARLY TUE MORNING BUILDING SEAS UP TO 14-16 FT. GAP WINDS... GULF OF PAPAGAYO...FRESH TO STRONG EASTERLY WINDS WILL CONTINUE TO PULSE IN THE GULF OF PAPAGAYO DURING THE NEXT 24-36 HOURS. THE STRONGEST WINDS WILL OCCUR DURING THE LATE NIGHT AND EARLY MORNING HOURS WITH THE ASSISTANCE OF THE NOCTURNAL DRAINAGE FLOW. WINDS WILL BRIEFLY DIMINISH TO 20 KT OR LESS BETWEEN 18-00 UTC EACH DAY. NORTHERLY WINDS OF 15-20 KT ARE BLOWING ACROSS THE GULF OF PANAMA BASED ON SCATTEROMETER DATA AND A COUPLE OF SHIP OBSERVATIONS WITH SEAS UP TO 6 FT NEAR 6N. THESE MARINE CONDITIONS WILL PERSIST TONIGHT AND EARLY TUE MORNING. $$ GR