000 AXPZ20 KNHC 182131 TWDEP TROPICAL WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 2205 UTC THU MAR 18 2010 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 2100 UTC. ...ITCZ... AXIS IS ALONG 06N77W TO 07N91W TO 03N100W TO 06N110W TO 03N124W TO 01N140W. SCATTERED MODERATE ISOLATED STRONG CONVECTION IS LOCATED WITHIN 90 NM OF 06.5N113.5W AND FROM 00N TO 06N BETWEEN 120W AND 130W. ...DISCUSSION... W OF 110W... A MIDDLE/UPPER LEVEL TROUGH IS APPROACHING THE NW PART OF THE DISCUSSION AREA FROM THE W WITH INCREASING SW WINDS OVER THE AREA N OF 25N W OF 135W. THE COLD FRONT WILL ENTER THE AREA IN 24 HOURS WITH NW TO N WINDS 20 TO 25 KT AND SEAS 8 TO 10 FEET BEHIND THE FRONT. DOWNSTREAM FLOW BECOMES NEARLY ZONAL IN THE AREA N OF ABOUT 15N BETWEEN 120W AND 135W. WESTERLY FLOW IS FAIRLY STRONG IN THIS AREA WITH SATELLITE CLOUD DRIFT WINDS INDICATING SPEEDS OF 80 TO 90 KNOTS. A WEAK MIDDLE/UPPER LEVEL TROUGH IS LOCATED OVER BAJA CALIFORNIA AND IS MOVING ESE ABOUT 20 KNOTS. THE ASSOCIATED SURFACE TROUGH IS LOCATED FROM THE SOUTHERN ARIZONA BORDER AT 112W TO 22N107W. WATER VAPOR IMAGERY SHOWS STRONG SUBSIDENCE OVER A LARGE AREA N OF ABOUT 15N W OF 110W. LIGHT VARIABLE WINDS ALOFT ARE LOCATED OVER THE DEEP TROPICS S OF ABOUT 10N TO THE EQUATOR. AT THE SURFACE TROUGHS ARE LOCATED ALONG 114W...123W...AND FROM 08N133W TO 01N137W. NORTHEAST TO E 20 KNOT TRADE WINDS ARE LOCATED FROM 05N TO 15N W OF 125W WITH SEAS 10 TO 12 FEET IN NW SWELL. A RIDGE AXIS IS LOCATED THROUGH 32N134W TO 24N136W. E OF 110W... FLOW ALOFT N OF 08N E OF 110W IS SOUTHWESTERLY TO WESTERLY WITH SPEEDS UP TO 40 KNOTS. FURTHER S TO THE EQUATOR SE TO S WINDS ARE LIGHTER. A GALE WARNING IS LOCATED OVER THE GULF OF TEHUANTEPEC FOR ABOUT THE NEXT 6 HOURS. GULF OF PAPAGAYO WINDS WILL BE IN THE 20 TO 25 KNOT RANGE FOR THE NEXT 24 HOURS AND THEN WEAKEN SLIGHTLY. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ CAB