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000
AXPZ20 KNHC 230929
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SAT AUG 23 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.


...SPECIAL FEATURES...

HURRICANE KARINA IS CENTERED NEAR 16.7N 134.4W AT 23/0900 UTC. MOVING NE OR 055 DEG AT 7 KT. ESTIMATED MINIMUM CENTRAL PRESSURE 988 MB. MAXIMUM SUSTAINED WINDS 70 KT WITH GUSTS TO 85 KT. NUMEROUS MODERATE TO STRONG CONVECTION IS WITHIN 45 NM IN THE E AND 9 NM IN THE W SEMICIRCLES. SEE LATEST NHC FORECAST/ADVISORY UNDERAWIPS/WMO HEADERS MIATCMEP1/WTPZ21 KNHC FOR MORE DETAILS.

TROPICAL STORM MARIE IS CENTERED NEAR 14.0N 105.7W AT 23/0900 UTC. MOVING WNW OR 285 DEG AT 11 KT. ESTIMATED MINIMUM CENTRAL PRESSURE 992 MB. MAXIMUM SUSTAINED WINDS 65 KT WITH GUSTS TO 80 KT. NUMEROUS MODERATE TO STRONG CONVECTION IS WITHIN 120 NM OF THE CENTER. SCATTERED MODERATE AND ISOLATED STRONG CONVECTION IS ELSEWHERE WITHIN 30 NM IN THE SE SEMICIRCLE AND IN THE W QUADRANT...AND 240 NM IN THE N QUADRANT. SEE LATEST NHC FORECAST/ADVISORY UNDER AWIPS/WMO HEADERS MIATCMEP3/WTPZ23 KNHC FOR MORE DETAILS.

TROPICAL STORM LOWELL IS CENTERED NEAR 23.4N 126.0W AT 23/0900 UTC...MOVING NW OR 310 DEG AT 7 KT. ESTIMATED MINIMUM CENTRAL PRESSURE 998 MB. MAXIMUM SUSTAINED WINDS 40 KT WITH GUSTS TO 50 KT. SCATTERED MODERATE ISOLATED STRONG CONVECTION IS BETWEEN 50 NM AND 150 NM IN THE NW QUADRANT. SEE LATEST NHC FORECAST/ADVISORY UNDER AWIPS/WMO HEADERS MIATCMEP2/WTPZ22 KNHC FOR MORE DETAILS.


...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

THE MONSOON TROUGH AXIS EXTENDS FROM 07N77W TO 10N97W. NO ITCZ AXIS IS PRESENT E OF 140W. SCATTERED MODERATE AND ISOLATED STRONG CONVECTION IS WITHIN 120 NM S OF THE AXIS BETWEEN 80W AND 95W...AND WITHIN 120 NM SE OF A LINE FROM 10N106W TO 06N120W. SCATTERED MODERATE CONVECTION WITHIN 90 NM SW OF A LINE FROM 14N124W TO 17N130W.


...DISCUSSION...

A SURFACE RIDGE EXTENDING FROM 32N119W SE TO NEAR BAJA CALIFORNIA. THIS RIDGE CONTINUES TO SUPPORT MAINLY MODERATE TO LOCALLY FRESH WINDS W OF 110W OUTSIDE OF THE INFLUENCES OF KARINA AND LOWELL.THE PRES GRADIENT HAS TIGHTENED OVER THE NW CORNER OF THE AREA AS LOWELL CONTINUES TO MOVE NW AGAINST THE RIDGE...WITH FRESH TO STRONG NE WINDS DEVELOPING AND SEAS BUILDING TO 10 FT IN THE FAR NW PORTION WELL AWAY FROM LOWELL.

$$ DGS

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