000 AXPZ20 KNHC 052203 TWDEP TROPICAL WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 2205 UTC WED MAR 05 2008 TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM THE EQUATOR TO 32N...EAST OF 140W. BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 2145 UTC. ...ITCZ... THE ITCZ AXIS IS ALONG 02N80W TO 04N87W TO 01N97W TO 07N120W TO 06N140W. SCATTERED MODERATE CONVECTION IS OBSERVED S OF 04N E OF 96W AND WITHIN 90 NM OF AN EMBEDDED LOW PRES 1012 MB AT 07N131W. ...DISCUSSION... AN UPPER ANTICYCLONE S OF THE EQUATOR HAS A RIDGE EXTENDING NE TO A GENTLE CREST ALONG 5N140W TO 00N132W. AN UPPER CYCLONE NEAR 15N142W HAS ITS ENVELOPE OF CYCLONIC FLOW EXTENDING E INTO THE AREA FROM 14N TO 22N W OF 138W. ANOTHER UPPER ANTICYCLONE IS AT 09N110W WITH A RIDGE NW TO A SHARP CREST AT 24N136W. DEBRIS MOISTURE FROM THE CONVECTION NEAR 07N131W IS ADVECTED N UNDER THIS RIDGE COVERING THE UPPER LEVELS FROM 08N TO 24N BETWEEN 117W AND 140W. A SERIES OF UPPER ANTICYCLONES CONTINUE TO DOMINATE THE DEEP TROPICS E OF 100W RESULTING IN A BROAD RIDGE OVER THE AREA CRESTING ALONG POINTS 20N90W 23N80W 22N70W. UPPER DIFFLUENCE ALONG THIS TROPICAL RIDGE IS ENHANCING ITCZ CONVECTION E OF 98W AND OTHER CONVECTION OVER S AMERICA. THE RESULTANT DEBRIS MOISTURE IS SPREADING NE OVER THE CENTRAL CARIBBEAN. THE N CENTRAL PORTION OF THE DISCUSSION AREA IS DOMINATED BY A SECONDARY UPPER TROUGH THAT HAS SWUNG SE TO REINFORCE THE INITIAL BROAD UPPER TROUGH...AXIS ALONG 32N114W 23N120W. DRY UPPER AIR IS NOTED WITHIN 120 NM EITHER SIDE OF LINE 27N100W 26N120W 26N140W. A SURFACE HIGH PRES IS NEAR 32N134W WITH A RIDGE EXTENDING SE TO NEAR 17N107W. NW SWELLS ORIGINATING OVER THE SUBTROPICAL WATERS WILL CONTINUE TO PROPAGATE SE MERGING WITH SW SWELLS CROSSING THE EQUATOR E OF 115W THAT CONTINUING NE TO THE COAST OF CENTRAL AMERICA. GULF OF CALIFORNIA S OF 25N...N WINDS WILL INCREASE AGAIN TO 20 TO 25 KT THU MORNING. GAP WINDS... GULF OF PAPAGAYO...E 10 TO 15 KT WINDS IN AND DOWNSTREAM THE GAP. $$ NELSON