000
AXPZ20 KNHC 301528
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC WED APR 30 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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC. 
  
...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
 
MONSOON TROUGH FROM 8N85W TO 6N100W TO 8N120W. ITCZ FROM 8N120W 
TO 6N140W. SCATTERED MODERATE TO STRONG CONVECTION WITHIN 200 NM 
S OF AXIS FROM 82W-101W AND WITHIN 90 NM EITHER SIDE OF AXIS 
FROM 112W-120W.

...DISCUSSION...                                       

AN UPPER LEVEL TROUGH ACROSS THE NW PORTION OF THE DISCUSSION 
AREA IS N OF 25N W OF 135W. AN UPPER LEVEL RIDGE EXTENDS FROM AN 
ANTICYCLONIC CIRCULATION CENTERED NEAR 7N130W TO 32N123W. AN 
UPPER LEVEL TROUGH E OF THE RIDGE WITH AXIS FROM THE NORTHEN 
GULF OF CALIFORNIA TO 20N116W. UPPER LEVEL DIFFLUENCE IS 
ENHANCING STRONG CONVECTION ALONG THE MONSOON TROUGH FROM 4N-9N 
BETWEEN 82W-101W.

WEAK SURFACE PRES PATTERN IS RESULTING WINDS 20 KT OR LESS 
ACROSS THE AREA. HOWEVER AN AREA OF NW SWELL TO 8 FT IS N OF 24N 
BETWEEN 117W-127W. THE SWELL WILL SUBSIDE TO LESS THAN 8 FT BY 
THU. THE PRES GRADIENT IS TIGHT ENOUGH ACROSS THE NORTHERN GULF 
OF CALIFORNIA...AND NLY WINDS HAVE INCREASED TO 20-30 KT...WITH 
SEAS 8 TO 10 FT. LITTLE CHANGE IS EXPECTED THROUGH THU THEN A 
SLIGHT DECREASE IN WINDS AND SEAS FRI.

WEAK COLD FRONT IS FORECAST TO MOVE INTO THE NW PORTION OF THE 
AREA AND EXTEND FROM 32N133W TO 24N140W THU. NO SIGNIFICANT 
WEATHER IS EXPECTED WITH THE FRONT...EXCEPT FOR NW SWELL TO 8 FT 
N OF 28N W OF THE FRONT. THE FRONT WILL DISSIPATE ON FRI AND THE 
SEAS WILL SUBSIDE.

$$
DGS