000 AXPZ20 KNHC 120223 TWDEP TROPICAL WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 0405 UTC SAT SEP 12 2015 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 0200 UTC. ...TROPICAL WAVES... A TROPICAL WAVE IS ALONG 95W N OF 08N EXTENDING INTO THE GULF OF TEHUANTEPEC MOVING W AT AROUND 20 KT. ONLY ISOLATED CONVECTION AND SCATTERED SHOWERS NOW ACCOMPANY THE WAVE. THE WAVE COINCIDES WITH BROAD 700 MB TROUGHING BETWEEN 93W-97W AND 850 MB RELATIVE VORTICITY MAXIMUM FROM 08N-13N. TROPICAL MOISTURE IS ALSO EVIDENT ON TOTAL PRECIPITABLE WATER SATELLITE IMAGERY. A TROPICAL WAVE IS ALONG 105W FROM 08N-15W MOVING W AROUND 10-15 KT. CONVECTION IS LIMITED WITH THIS WAVE WITH ISOLATED TSTMS AND SCATTERED SHOWERS ACCOMPANYING IT. THE WAVE COINCIDES WITH 700 MB TROUGHING BETWEEN 103W-107W WITH 850 MB RELATIVE VORTICITY MAXIMUM NOTED FROM 08N-13N. DEEP TROPICAL MOISTURE IS ALSO EVIDENT ON TOTAL PRECIPITABLE WATER SATELLITE IMAGERY ALONG THE WAVE AXIS. A TROPICAL WAVE IS ALONG 110W FROM 07N-15N MOVING W AT AROUND 10- 15 KT. SCATTERED MODERATE CONVECTION IS ACCOMPANYING THE WAVE FROM 10N-12N BETWEEN 107W-11W. THE WAVE COINCIDES WITH 700 MB TROUGHING BETWEEN 110W-113W AND 850 MB RELATIVE VORTICITY MAXIMUM NOTED FROM 09N-13N. DEEP TROPICAL MOISTURE IS ALSO EVIDENT ON TOTAL PRECIPITABLE WATER SATELLITE IMAGERY ALONG THE WAVE AXIS. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... THE MONSOON TROUGH AXIS EXTENDS FROM 09N78W TO 09N95W TO 07N110W TO 12N116W. A SURFACE TROUGH AXIS EXTENDS FROM 14N121W TO 11N130W TO 10N140W. NO ITCZ AXIS IS PRESENT. SCATTERED MODERATE CONVECTION IS FROM 05N TO 10N BETWEEN 80W AND 86W... WITHIN 150 NM S OF THE AXIS BETWEEN 86W AND 92W...FROM 06N TO 16N BETWEEN 97W AND 101W...AND ALSO FROM 08N TO 11N BETWEEN 128W AND 135W. ...DISCUSSION... LOW PRES OF 1004 MB...THE REMNANT LOW OF LINDA...IS CENTERED NEAR 27.5N121W. WHILE THE LOW IS NO LONGER TROPICAL...AN AREA OF FRESH TO STRONG WINDS REMAINS WITHIN 180 NM IN THE N SEMICIRCLE ALONG WITH 8-11 FT SEAS IN MIXED SWELL. THE REMNANT LOW OF LINDA WILL GRADUALLY SPIN DOWN WITH ASSOCIATED WINDS 20 KT OR LESS AND SEAS LESS THAN 8 FT BY 48 HOURS. MOISTURE ASSOCIATED WITH THE REMNANT LOW OF LINDA CONTINUES TO SPREAD NORTHWARD INTO NORTHERN BAJA CALIFORNIA AND PORTIONS OF THE SW U.S. WHICH MAY TRIGGER SOME ADDITIONAL SHOWERS AND TSTM ACTIVITY TONIGHT INTO SAT. SWELLS FROM LINDA WILL CONTINUE TO PROPAGATE TOWARD THE NORTHERN PORTION OF THE BAJA CALIFORNIA PENINSULA...AS WELL AS TOWARD THE U.S. SOUTHERN CALIFORNIA COASTLINE. THESE SWELLS WILL RESULT IN A HIGH RISK OF RIP CURRENTS AND DANGEROUS HIGH SURF THROUGH SAT...GRADUALLY SUBSIDING INTO SUN. PLEASE CONSULT YOUR LOCAL NWS WEATHER FORECAST OFFICE FOR ADDITIONAL DETAILS ON THESE CONDITIONS. A 1026 MB SURFACE HIGH CENTERED WELL N OF THE DISCUSSION WATERS NEAR 42N140W EXTENDS A RIDGE ACROSS THE NW CORNER OF THE FORECAST AREA. MAINLY MODERATE TO LOCALLY FRESH WINDS COVER THE WATERS W OF 120W...WITH LIGHT TO MODERATE WINDS E OF 120W. SEAS ACROSS THE WATERS W OF 120W ARE RUNNING GENERALLY 5-7 FT IN A BROAD MIX OF SWELL...WHILE CROSS EQUATORIAL 4-7 FT SW SWELL DOMINATES THE REMAINDER OF THE FORECAST REGION. FARTHER SOUTH...A 1009 MB LOW IS NEAR 15N117.5W. NO SIGNIFICANT CONVECTION IS NOTED WITH THIS LOW AND IT IS FORECAST TO MOVE W- SW AROUND 10-15 KT DURING THE NEXT 24 HOURS. A SURFACE TROUGH IS LOCATED OVER THE W CENTRAL WATERS EXTENDING FROM 16N136W TO 12N140W. NO CONVECTION WAS NOTED WITH THIS TROUGH. THIS TROUGH IS FORECAST TO MOVE W OF 140W SAT AFTERNOON. $$ LEWITSKY