000
AXPZ20 KNHC 180250
TWDEP 

TROPICAL WEATHER DISCUSSION                                      
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
0405 UTC TUE AUG 18 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 
0345 UTC.               
   
...SPECIAL FEATURE...

TROPICAL DEPRESSION ELEVEN-E IS CENTERED NEAR 24.5N 124.5W AT 
18/0300 UTC OR ABOUT ABOUT 750 NM W OF THE SOUTHERN TIP OF BAJA 
CALIFORNIA MOVING NW OR 310 DEG AT 18 KT. ESTIMATED MINIMUM 
CENTRAL PRESSURE IS 1005 MB. MAXIMUM SUSTAINED WIND SPEED IS 25 
KT WITH GUSTS TO 35 KT. THE DEPRESSION IS ILL-DEFINED AS IT IS 
UNDER THE INFLUENCE OF SELY WIND SHEAR FROM AN UPPER LOW 
SITUATED TO ITS SW NEAR 20N131W. IN ADDITION...THE DEPRESSION IS 
OVER NOTICEABLY COOLER SEA SURFACE TEMPERATURES. PRESENTLY 
ISOLATED MODERATE CONVECTION IS FROM 24N TO 28N BETWEEN 125W 
AND 129W. ASSOCIATED SEAS ARE IN THE 9-11 FT WITHIN 210 NM OF 
THE NE QUADRANT. THE DEPRESSION IS FORECAST TO FURTHER WEAKEN 
TONIGHT...AND MOVE TO NEAR 27.0N 128.6W BY TUE 
EVENING. PLEASE SEE THE LATEST FORECAST ADVISORY UNDER AWIPS/WMO 
HEADERS MIATCMEP1/WTPZ21 KNHC FOR MORE DETAILS.

...TROPICAL WAVE...

A TROPICAL WAVE IS S OF COSTA RICA ALONG 83W/84W N OF 06N MOVING 
W AT 15 KT. ISOLATED MODERATE CONVECTION IS FROM 04N TO 09N 
BETWEEN 83W AND 86W. 

A TROPICAL WAVE AXIS IS ALONG 106W/107W N OF 08N MOVING W NEAR 
15 KT. SCATTERED MODERATE FROM 05N TO 13N BETWEEN 106W AND 115W.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...            
MONSOON TROUGH AXIS EXTENDS FROM 09N87W TO 08N94W TO 11N100W. 
MONSOON TROUGH RESUMES FROM 13N121W TO 12N130W TO 10N140W. 
ISOLATED MODERATE CONVECTION IS FROM 05N TO 10N BETWEEN 89W AND 
94W. SCATTERED MODERATE CONVECTION IS FROM 02N TO 11N BETWEEN 
120W AND 140W. 
 
...DISCUSSION... 

A 1038 MB HIGH IS CENTERED N OF THE AREA NEAR 45N146W. THE 
SURFACE PRESSURE GRADIENT TIGHTENS NEAR THE NW CORNER OF THE 
FORECAST AREA. WINDS 20 KT OR LESS WITH SEAS 8 FT IN NE SWELL 
ARE FORECAST FOR TONIGHT N OF 29N BETWEEN 132W AND 136W. THESE 
WINDS AND SEAS ARE EXPECTED TO LAST UNTIL WED.   

$$ 
FORMOSA