000
AXPZ20 KNHC 041519
TWDEP 

TROPICAL WEATHER DISCUSSION                                     
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
1605 UTC FRI DEC 04 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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1500 UTC.               
 
...SPECIAL FEATURE...

GULF OF TEHUANTEPEC STORM WARNING...STRONG HIGH PRESSURE OF 1035
MB CENTERED OVER THE EASTERN UNITED STATES EXTENDS A RIDGE SW
ACROSS EASTERN MEXICO. THE PRESSURE GRADIENT BETWEEN THIS RIDGE
AND LOWER PRESSURE OVER THE EASTERN PACIFIC IS SUPPORTING STORM
FORCE WINDS OVER THE GULF OF TEHUANTEPEC. WINDS WILL PULSE
BETWEEN STORM FORCE AND STRONG GALE FORCE OVER THE NEXT COUPLE
OF DAYS...REACHING STORM FORCE DURING THE OVERNIGHT HOURS AND
STRONG GALE FORCE DURING THE DAY TIME HOURS.
  
...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...            

THE MONSOON TROUGH EXTENDS FROM 07N77W TO 07N83W TO 04N91W. THE
ITCZ EXTENDS FROM 04N91W TO 04N116W TO 03N120W TO 03N135W TO
05N140W. SCATTERED MODERATE ISOLATED STRONG CONVECTION WAS NOTED
WITHIN 120 NM S OF THE MONSOON TROUGH E OF 88W. SCATTERED
MODERATE ISOLATED STRONG CONVECTION WAS NOTED WITHIN 120 NM OF
THE ITCZ W OF 135W.
 
...DISCUSSION...

HIGH PRESSURE OF 1024 MB CENTERED NEAR 30N136W EXTENDS A RIDGE
SE TO NEAR 21N115W. THE PRESSURE GRADIENT BETWEEN THE AREA OF
HIGH PRESSURE AND LOWER PRESSURE IN THE VICINITY OF THE ITCZ IS
MAINTAINING FRESH TO STRONG WINDS OVER THE WESTERN WATERS N OF
THE ITCZ. THE AREA OF HIGH PRESSURE WILL WEAKEN OVER THE NEXT 24
HOURS AND DIMINISH COVERAGE OF THE STRONG TRADES BEFORE HIGH
PRESSURE BUILDS BACK SAT INTO SUN AND ONCE AGAIN INCREASES
TRADES. NE WIND WAVES ARE COMBINING WITH SOUTHERLY AND NW SWELL
OVER THE WESTERN WATERS. BY SUN MORNING...SEAS OF 8 FT OR HIGHER
WILL COVER MUCH OF THE AREA W OF 110W IN THIS BROAD MIX OF
SWELL. 
 
GULF OF PAPAGAYO...STRONG HIGH PRESSURE N OF THE AREA IS ALSO
SUPPORTING FRESH TO STRONG GAP WINDS THROUGH THE GULF OF
PAPAGAYO. THESE WINDS WILL CONTINUE TO PERSIST THROUGH AT LEAST
SUN MORNING WITH EXPANDING COVERAGE DURING THE OVERNIGHT HOURS. 
 
GULF OF CALIFORNIA...HIGH PRESSURE BUILDING OVER THE GREAT BASIN
REGION WILL HELP INCREASE WINDS OVER THE GULF OF CALIFORNIA.
WINDS WILL INCREASE TO 25 KT SAT AFTERNOON OVER THE FAR NORTHERN
GULF AND SPREAD ACROSS MUCH OF THE GULF WATERS BY SAT NIGHT. 

$$
AL