000
AXPZ20 KNHC 250921
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS NATIONAL HURRICANE CENTER MIAMI FL 
1005 UTC FRI MAR 25 2016

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.              

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

NORTHERN ITCZ FROM 04N93W TO 05N110W TO 02N125W TO 03N140W.
SCATTERED MODERATE FROM 02N TO 04N BETWEEN 95W AND 97W AND FROM
04N TO 06N BETWEEN 118W AND 121W. SOUTHERN ITCZ FROM 02S87W TO
01S107W TO BEYOND 02S120W. SCATTERED MODERATE WITHIN 90 NM S OF
AXIS BETWEEN 106W AND 111W. 
 
...DISCUSSION...                                               

HIGH PRESSURE OF 1030 MB CENTERED NEAR 35N135W EXTENDS A RIDGE
SE TO NEAR THE REVILLAGIDO ISLANDS. THE PRESSURE GRADIENT
BETWEEN THE AREA OF HIGH PRESSURE AND LOWER PRESSURE IN THE
VICINITY OF THE ITCZ IS MAINTAINING MODERATE TO FRESH TRADES
OVER THE WESTERN WATERS N OF THE ITCZ TO ABOUT 20N BASED ON
SCATTEROMETER DATA. THE HIGH PRESSURE WILL REMAIN NEARLY
STATIONARY OVER THE NEXT 24-48 HOURS. THE PRES GRADIENT BETWEEN
THIS SYSTEM AND A TROUGH OVER WESTERN MEXICO WILL BRING AN
INCREASE IN WINDS AND SEAS ACROSS THE N WATERS...PARTICULARLY N
OF 28N BETWEEN 120W AND 125W. MARINE GUIDANCE SUGGESTS NORTHERLY
WINDS IN THE 20-25 KT RANGE AND BUILDING SEAS UP TO 12 FT IN NW
SWELL THROUGH SAT NIGHT.
 
LONG PERIOD NW SWELL DOMINATES MOST OF THE FORECAST WATERS. SEAS
8 FT OR GREATER GENERALLY COVERS THE AREA S OF 15N AND W OF
100W...AND ARE EXPECTED TO GRADUALLY SUBSIDE TO 8 FT OR LESS
ACROSS THE WATERS N OF THE EQUATOR BY SAT. AS THIS OCCURS...SEAS
WILL INCREASE ACROSS THE N WATERS AS ADDITIONAL PULSES OF NW
SWELL PROPAGATES ACROSS THE FORECAST REGION. 
 
GAP WINDS...

GULF OF PAPAGAYO...WINDS WILL PULSE ACROSS THE GULF OF PAPAGAYO
OVER THE NEXT COUPLE OF DAYS. WINDS WILL PEAK NEAR 25 KT DURING
THE LATE NIGHT AND EARLY MORNING HOURS AND DIMINISH TO 20 KT OR
LESS DURING THE AFTERNOON AND EARLY EVENING HOURS. EXPECT
BUILDING SEAS OF 6-7 FT WITH THESE WINDS.

GULF OF PANAMA...FRESH NORTHERLY WINDS ARE EXPECTED ACROSS THE
GULF OF PANAMA AND DOWNWIND TO ABOUT 06N DURING THE LATE NIGHT
AND EARLY MORNING HOURS THROUGH TONIGHT.

$$
GR