000 AXPZ20 KNHC 230329 TWDEP TROPICAL WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 0405 UTC SUN FEB 23 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... MONSOON TROUGH EXTENDS FROM 09N84W TO 05N90W TO 05N97W. ITCZ CONTINUES FROM 05N97W TO 08N125W TO BEYOND 09N140W. SCATTERED MODERATE TO ISOLATED STRONG CONVECTION IS NOTED WITHIN AROUND 90 NM N OF ITCZ AXIS BETWEEN 121W AND 125W. A DIFFLUENT PATTERN ALOFT IS HELPING TO INDUCE THIS CONVECTIVE ACTIVITY. ...DISCUSSION... AN UPPER LEVEL SHORTWAVE TROUGH IS CLIPPING THE NW PORTION OF THE DISCUSSION AREA WITH AXIS FROM 32N132W TO 28N134W. W TO SW WIND FLOW ALOFT COVER THE AREA N OF 20N. THESE WINDS ARE TRANSPORTING ABUNDANT MID TO UPPER LEVEL MOISTURE ACROSS THE REGION E OF 128W THROUGH BAJA CALIFORNIA INTO NW MEXICO. A 95- 100 KT JETSTREAM ENTERS THE FORECAST WATERS NEAR 19N140W THEN CONTINUES ALONG 21N130W TO 20N120W. THIS JET IS RIDING ON THE N PERIPHERY OF A RIDGE EXTENDING FROM 06N122W TO 22N126W. A FAIR AMOUNT OF MID TO UPPER LEVEL MOISTURE IS ALSO NOTED FROM 07N TO 20N W OF 120W. ANOTHER UPPER LEVEL TROUGH IS E OF THE RIDGE AND RUNS FROM 21N110W TO 08N100W. THE REMAINDER OF THE AREA E OF 100W...INCLUDING SE MEXICO AND CENTRAL AMERICA...IS UNDER THE INFLUENCE OF ANOTHER RIDGE. MODERATE TO STRONG MID TO UPPER LEVEL SUBSIDENCE AND IMPLIED DRY AIR MASS IS SEEN WITHIN THE RIDGE. A SURFACE RIDGE COVERS THE WATERS N OF 15N W OF 110W. MAINLY GENTLE TO MODERATE WINDS AND SEAS OF 6-7 FT ARE OBSERVED BY SCATTEROMETER DATA UNDER THE INFLUENCE OF THIS SYSTEM. MODERATE TO FRESH WINDS ARE BLOWING S OF THE RIDGE AND N OF THE ITCZ WITH SEAS OF 8-9 FT IN MIXED NE AND NW SWELL MAINLY FROM 07N TO 12N W OF 132W. AN EARLIER ALTIMETER PASS CONFIRMED THE PRESENCE OF THESE SEA HEIGHTS...EXPECTED TO SUBSIDE TO LESS THAN 8 FT BY LATE TONIGHT. THE LOW PRES THAT WAS PREVIOUSLY EMBEDDED IN THE MONSOON TROUGH HAS OPENED UP INTO A TROUGH THAT CURRENTLY EXTENDS FROM 09N108W TO 04N109W. THIS TROUGH IS ONLY GENERATING A FEW SHOWERS. A STRONG EXTRATROPICAL CYCLONE MOVING N OF AREA WILL BRING AN INCREASE IN WINDS AND SEAS ACROSS THE NW PORTION OF THE FORECAST REGION BY MON. EXPECT INCREASING SW TO S WINDS OF 20-25 KT AND BUILDING SEAS OF 8-9 FT NW OF LINE FROM 30N135W TO 26N140W BY MON EVENING. THE ASSOCIATED COLD FRONT SHOULD REACH 30N140W BY MON NIGHT. GAP WINDS... GULF OF PAPAGAYO...FRESH TO STRONG EASTERLY WINDS WILL CONTINUE TO PULSE IN THE GULF OF PAPAGAYO DURING THE NEXT COUPLE OF DAYS. 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. WINDS AND SEAS HAVE DIMINISHED BELOW ADVISORY CRITERIA ACROSS THE GULF OF TEHUANTEPEC. $$ GR