000 AXPZ20 KNHC 170920 TWDEP TROPICAL WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 1005 UTC THU JUL 17 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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 0900 UTC. ...TROPICAL WAVES... TROPICAL WAVE EXTENDS FROM 14N102W TO 1013 MB LOW 7N99W. ISOLATED SHOWERS AND TSTMS ALONG THE WAVE AXIS. TROPICAL WAVE EXTENDS FROM 16N112W TO 1012 MB LOW 8N114W. A FEW SHOWERS ARE ALONG THE WAVE. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... MONSOON TROUGH FROM 10N85W TO LOW PRES 7N100W LOW PRES 8N113W TO 7N119W. ITCZ FROM 7N119W TO 11NM130W TO 12N140W. SCATTERED MODERATE TO STRONG CONVECTION FROM 4N-7N BETWEEN 9W-95W AND WITHIN 900 NM EITHER SIDE OF AXIS FROM 129N-134N. NUMEROUS STRONG CONVECTION WITHIN 80 NM N AND 100 NM S OF AXIS FROM 138W TO 140W. ...DISCUSSION... A BROAD UPPER LEVEL CYCLONIC CIRCULATION JUST W OF THE DISCUSSION AREA CENTERED NEAR 27N143W WITH TROUGH EXTENDING NE TO 30N130W THEN SE TO ANOTHER CYCLONIC CIRCULATION NEAR 22N116W. A LARGE AREA OF DRY AND STABLE AIR AT THE MIDDLE AND UPPER LEVELS IS N OF 20N W OF 120W. AN UPPER LEVEL ANTICYCLONIC CIRCULATION IS CENTERED NEAR THE COAST OF MEXICO AT 19N103W WITH A RIDGE EXTENDING N TO 25N125W. ANOTHER RIDGE EXTENDS FROM THE ANTICYLONE TO 10N107W. UPPER LEVEL DIFFLUENT FLOW S OF THE ANTICYCLONE IS ENHANCING STRONG CONVECTION FROM 4N-7N BETWEEN 90W-95W THE LOW THAT HAD BEEN IN THE WESTERN PORTION OF THE AREA HAS MOVED W OF THE DISCUSSION AREA...HOWEVER ELY WINDS TO 20 KT WITH SEAS TO 9 FT IN NE SWELL ARE FROM 13N-17N W OF 137W. WINDS AND SEAS WILL DECREASE THU NIGHT. OTHERWISE A SURFACE HIGH PRES RIDGE IS ACROSS THE AREA N OF 18N W OF 115W...WITH WINDS 15 KT OR LESS. $$ DGS