000 AXPZ20 KNHC 260233 TWDEP TROPICAL WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 0405 UTC THU JUN 26 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 0230 UTC. ...TROPICAL WAVES... TROPICAL WAVE WAS ANALYZED ALONG 104 N OF 13N MOVING W AT 10-15 KT. ALTHOUGH WAVE REMAINS EMBEDDED WITHIN A LARGE AREA OF DEEP MOISTURE THERE IS CURRENTLY NO ASSOCIATED DEEP CONVECTION. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... THE MONSOON TROUGH AXIS IS ANALYZED FROM 8N78W ALONG 7N86W 9N100W 8N116W 13N127W TO 1011 MB LOW NEAR 12N131W. ITCZ AXIS IS ANALYZED FROM 12N131W TO A SECOND 1011 MB LOW NEAR 10N137W TO 8N140W. SCATTERED MODERATE/ISOLATED STRONG CONVECTION IS WITHIN 210 NM S OF MONSOON TROUGH E OF 95W TO COLOMBIA AND WITHIN 210 NM N OF MONSOON TROUGH BETWEEN 94W AND 100W. SCATTERED MODERATE CONVECTION IS WITHIN 90 NM N OF MONSOON TROUGH BETWEEN 110W-115W AND WITHIN 90/120 NM EITHER SIDE OF ITCZ W OF 135W. ...DISCUSSION... AT UPPER LEVELS...A LARGE UPPER RIDGE DOMINATES THE AREA BETWEEN 90W AND 125W ANCHORED NEAR 20N115W AND EXTENDING E OVER S MEXICO AND INTO THE SW GULF OF MEXICO. BOTH WATER VAPOR IMAGERY AND TOTAL PRECIPITABLE WATER IMAGERY DEPICT ABUNDANT DEEP LAYERED MOISTURE TO THE E OF 110W. DIFFLUNCE ALOFT S OF THE UPPER RIDGE AXIS IS ENHANCING THE VERTICAL LIFT IN THE REGION OF THE MONSOON TROUGH ALLOWING FOR THE ACTIVE CONVECTION E OF 100W AS DESCRIBED IN THE TROPICAL WAVE SECTION ABOVE. TO THE W OF THE UPPER RIDGE IS AN UPPER LOW CENTERED NEAR 21N129W WITH AN UPPER TROUGH DIGGING S OVER THE FAR NW CORDER OF THE DISCUSSION AREA. MODERATE TO STRONG SUBSIDENCE WITH DRY AND STABLE AIR COVER THE REMAINDER OF THE AREA W OF 110W. THE UPPER RIDGE WILL GRADUALLY SHIFT W AS THE UPPER LOW NEAR 21N129W LIFTS NW AND DISSIPATES OVERNIGHT. THE UPPER RIDGE WILL THEN BECOME THE DOMINATING FEATURE THU THROUGH SAT. AT THE SURFACE...THE QUASI-STATIONARY 1008 MB LOW REMAINS S OF BAJA CALIFORNIA NEAR 21N111W. THIS LOW CONTINUES TO BE MARKED BY A SWIRL OF LOW CLOUDS WITH POSSIBLE ISOLATED SHOWERS WITHIN 75 NM OF THE CENTER OVER THE WESTERN SEMICIRCLE. THE LOW IS FORECAST TO GRADUALLY BECOME A SURFACE TROUGH BY OVERNIGHT. THE SUBTROPICAL SURFACE RIDGE EXTENDS FROM A 1023 MB HIGH NEAR 31N138W SE TO 23N123W. THIS RIDGE HAS PRODUCED A TIGHT PRESSURE GRADIENT OFF THE COAST OF CALIFORNIA TO GENERATE FRESH TO STRONG BREEZES ALONG THE CALIFORNIA COAST JUST N OF DISCUSSION AREA. THIS IS PRODUCING SEAS TO 10 TO 12 FT N OF 30N WITH THE RESULTANT SWELL TRAIN PROPAGATING INTO THE FAR NE WATERS GIVING THE AREA SEAS TO 8 FT OVERNIGHT. SEAS WILL SUBSIDE BY MORNING. GAP WINDS... GULF OF PAPAGAYO...E TO SE WINDS OF 20 TO 25 KT ARE EXPECTED LATER TONIGHT THROUGH EARLY MORNING THU BEFORE DIMINISHING. THIS PATTERN OF PULSING IN THE OVERNIGHT THROUGH THE EARLY MORNING HOURS WILL CONTINUE TO SAT BUT WILL REMAIN 20 KT OR LESS. $$ PAW