000
AXPZ20 KNHC 150248
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC THU AUG 15 2013

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 
0300 UTC.
                                      
...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...           

THE MONSOON TROUGH EXTENDS FROM 10N85W TO A 1008 MB LOW NEAR 
10N106W TO 12N112W TO ANOTHER 1008 MB LOW NEAR 09N120W TO 
06N131W. SCATTERED MODERATE ISOLATED STRONG CONVECTION IS WITHIN 
90 NM EITHER SIDE OF TROUGH AXIS BETWEEN 103W AND 130W.

...DISCUSSION...                                                 

A WEAK 1021 MB SURFACE HIGH IS ANALYZED NEAR 30N135W WITH AN 
ASSOCIATED RIDGE EXTENDING SOUTHEASTWARD TO 21N117W. PRESSURE 
GRADIENT BETWEEN THE HIGH AND AREA OF LOW PRESSURE NEAR 12N143W 
IS PRODUCING FRESH NE TO E WINDS AND SEAS TO 9 FT W OF 138W... 
BETWEEN 17N AND 20N. WINDS AND SEAS WILL DECREASE IN THIS REGION 
OVERNIGHT AS SYSTEM CONTINUES MOVING W AWAY FROM FORECAST WATERS.

ASCAT SCATTEROMETER DATA AT 1630 UTC SHOWED WEAK GAP WIND EVENT 
N OF 15N IN THE GULF OF TEHUANTEPEC. A TROPICAL DISTURBANCE IN 
THE WESTERN CARIBBEAN IS INDUCING SOME NORTHERLY FLOW THROUGH 
THE CHIVELA PASS INTO THE GULF OF TEHUANTEPEC. DYNAMIC FORCING 
WILL RELAX LATER TODAY AS DISTURBANCE MOVES INTO GULF OF MEXICO.

NO SIGNIFICANT LONG-PERIOD SWELL EPISODES ARE EXPECTED THE NEXT 
SEVERAL DAYS. OVERALL...THE NE PACIFIC REMAINS RELATIVELY QUIET 
NEAR THE PEAK OF HURRICANE SEASON.

$$ 
MUNDELL