000 AXPZ20 KNHC 100310 TWDEP TROPICAL WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 0405 UTC FRI JUN 10 2011 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 0345 UTC. ...SPECIAL FEATURE... HURRICANE ADRIAN AT 14.6N 105.8W 946 MB AT 10/0300 UTC MOVE WNW OR 285 DEGREES AT 08 KT. THE MAXIMUM SUSTAINED WINDS ARE 120 KT WITH GUSTS TO 145 KT. NUMEROUS STRONG CONVECTION IS OBSERVED WITHIN 60 NM OVER THE E SEMICIRCLE AND WITHIN 90 NM OVER THE W SEMICIRCLE. SCATTERED MODERATE ISOLATED STRONG CONVECTION IS NOTED ELSEWHERE FROM 12N TO 16N BETWEEN 104W AND 108W. LARGE WAVES AND HAZARDOUS SURF CONDITIONS EXPECTED ALONG THE CENTRAL COAST OF MEXICO. ADRIAN IS EXPECTED TO BEGIN TO WEAKEN LATE FRI AS THE HURRICANE MOVES OVER COOLER OCEAN WATERS. SEE THE LATEST NHC ADVISORY UNDER AWIPS/WMO HEADERS MIATCPEP1/WTPZ21 KNHC FOR MORE DETAILS. ...ITCZ/MONSOON TROUGH... A MONSOON TROUGH EXTENDS FROM 08N82W TO 12N98W. MORE MONSOON TROUGH IS FURTHER W FROM 09N107W TO 11N118W. AN INTERTROPICAL CONVERGENCE ZONE CONTINUES TO 07N130W TO BEYOND 06N140W. ISOLATED MODERATE CONVECTION IS FROM 05N TO 10N BETWEEN 89W AND 93W. ISOLATED MODERATE CONVECTION IS S OF ADRIAN FROM 08N TO 12N BETWEEN 105W AND 113W. ISOLATED MODERATE CONVECTION IS FROM 07N TO 10N BETWEEN 123W AND 126W. ...DISCUSSION... AN UPPER LEVEL CYCLONE IS CENTERED NEAR 35N135W WITH AN UPPER TROUGH EXTENDING SW TO BEYOND 29N140W. AN UPPER ANTICYCLONE IS CENTERED AT 10N125W WITH ITS ENVELOPE ON ANTICYCLONIC FLOW DOMINATING THE DISCUSSION AREA FROM 05N TO 20N BETWEEN 115W AND 140W WITH STRONG SUBSIDENCE. SMALL CLUSTERS OF ITCZ CONVECTION IS ENHANCED UNDER THIS TROPICAL RIDGE BETWEEN 120W AND 140W. AS EXPECTED ANOTHER UPPER LEVEL HIGH IS OVER HURRICANE ADRIAN. AN UPPER CYCLONE IS NOTED OVER THE DEEP TROPICS NEAR 02S114W WITH A TROUGH EXTENDING NW TO NEAR 11N130W. FURTHER E...AN UPPER ANTICYCLONE CONTINUES TO MEANDER OVER THE CENTRAL CARIBBEAN WITH A RIDGE EXTENDING W ACROSS CENTRAL AMERICA TO A CREST CURRENTLY OVER THE TROPICAL PACIFIC AT 12N93W. SMALL CLUSTERS OF CONVECTION HAVE FLARED OVER THE PACIFIC COAST OF COLOMBIA AND COSTA RICA...WITH THE CELLS MOVING W AND DISSIPATING OVER THE COASTAL WATERS OF THESE COUNTRIES. ELSEWHERE AT THE LOW LEVELS...A RIDGE EXTENDS FROM 32N139W TO 17N113W. THE GRADIENT NE OF THE RIDGE WILL MAINTAIN NORTHERLY WINDS AT 15 TO 20 KT ALONG THE W COAST OF THE BAJA CALIFORNIA PENINSULA THROUGH FRI NIGHT...WITH THE GRADIENT RELAXING THEREAFTER. NE TRADES AREA ALSO IN THE 15 TO 20 KT RANGE TO THE SW OF THE RIDGE...FROM 08N TO 21N W OF 130W...WITH SEAS 6 TO 9 FT IN MERGING NE WIND WAVES AND LONG PERIOD S SWELL. THIS AREA OF ENHANCED NE TRADES SHOULD SHRINK TO THE WATERS ROUGHLY FROM 06N TO 18W W OF 130W BY LATE SAT. SOUTHERLY CROSS EQUATORIAL SWELL EXTENDS NORTHWARD OVER THE PACIFIC WATERS BETWEEN 95W AND 108W MIXING WITH THE CONFUSED SEAS OVER THE SOUTHERN SEMICIRCLE OF HURRICANE ADRIAN. SOUTHERLY WINDS AT 15 TO 20 KT AREA ALSO EXPECTED OVER THE DEEP TROPICS S OF ABOUT 08N BETWEEN 108W AND 130W. $$ FORMOSA