000
AXPZ20 KNHC 271535
TWDEP 

TROPICAL WEATHER DISCUSSION                                  
NWS NATIONAL HURRICANE CENTER MIAMI FL                      
1605 UTC WED APR 27 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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1500 UTC.
  
...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...            
A TROUGH EXTENDS FROM 11N86W TO 07N91W AND FROM 09N98W TO
07N105W TO 08N112W. THE ITCZ EXTENDS FROM 08N115W TO 03N140W.
SCATTERED MODERATE AND ISOLATED STRONG CONVECTION IS FROM 04N TO
14N BETWEEN 80W AND 91W...AND FROM 05N TO 11N BETWEEN 91W AND
100W. SCATTERED MODERATE CONVECTION IS WITHIN 120 NM EITHER SIDE
OF A LINE FROM 11N111W TO 06N125W...AND FROM 02N TO 06N BETWEEN
129W AND 137W.

...DISCUSSION...

N OF 15N E OF 120W...

A RIDGE AXIS EXTENDS INTO THE AREA STEMMING FROM 1027 MB HIGH
PRESSURE NEAR 31N140W THROUGH 23N120W TO 17N109W. BROAD AND
ELONGATED SURFACE TROUGHING IS LOCATED ACROSS NW MEXICO. THE
PRESSURE GRADIENT BETWEEN THE RIDGE AND TROUGHING IS SUPPORTING
MODERATE TO FRESH NW TO N FLOW ACROSS THE REGION WITH THE
STRONGEST WINDS FOUND JUST OFFSHORE OF THE CENTRAL BAJA
CALIFORNIA PENINSULA PER AN OVERNIGHT ASCAT PASS AROUND 27/0518
UTC. A COLD FRONT WILL MOVE FROM SOUTHERN CALIFORNIA TO ACROSS
NW MEXICO TONIGHT INTO EARLY THU...WITH WINDS INCREASING TO
FRESH TO STRONG N OF 30N W OF BAJA CALIFORNIA IN ITS WAKE.
FRESH TO NEAR GALE FORCE WESTERLY WINDS AHEAD OF THE FRONT WILL
BE FUNNELED THROUGH NORTHERN BAJA PASSES INTO THE NORTHERN GULF
OF CALIFORNIA FROM 29.5N TO 30.5N BY THIS EVENING...DIMINISHING
BY LATE THU NIGHT AS THE FRONT DISSIPATES. NW SWELLS OF 6 TO 10
FT...HIGHEST OFFSHORE OF THE NORTHERN BAJA CALIFORNIA
PENINSULA...WILL PERSIST THROUGH AT LEAST FRI.

S OF 15N E OF 110W...

LIGHT TO MODERATE SW TO W FLOW DOMINATES THE REGION WITH A WEAK
SURFACE TROUGH MEANDERING FROM THE COSTA RICA COAST WESTWARD
FROM 07N-10N TO 110W. LITTLE CHANGE IN WIND CONDITIONS ARE
EXPECTED THROUGH THE REMAINDER OF THE WEEK AND THE UPCOMING
WEEKEND. CURRENTLY COMBINED SEAS ARE 4 TO 7 FT IN MIXED SW AND
NW SWELL. A NEW SET OF SW CROSS-EQUATORIAL SWELL WILL BREACH THE
EQUATOR AT 110W TONIGHT...REACHING THE SW FACING SHORES OF THE
GALAPAGOS BY THU NIGHT...THEN REACHING THE PACIFIC SHORES OF
CENTRAL AMERICA FRI AFTERNOON AND EVENING. COMBINED SEAS OF 6-9
FT ARE EXPECTED WITH THIS SWELL TRAIN...SUBSIDING FRI NIGHT
THROUGH SUN.

ELSEWHERE FROM THE EQUATOR TO 32N E OF 140W...

THE ABOVE DISCUSSED RIDGING IS SUPPORTING MODERATE TO FRESH
TRADES N OF THE ITCZ. COMBINED SEAS OF 6 TO 9 FT COVER THIS
REMAINING AREA...EXCEPT IN THE NW CORNER CLOSEST TO THE HIGH
CENTER WHERE SEAS ARE ONLY 4 TO 6 FT UNDER LIGHT WINDS. A NEW
SET OF NW SWELL WILL MOVE INTO THE NW PORTION BY THU MORNING AS
THE HIGH TEMPORARILY BREAKS DOWN DUE TO A DECAYING COLD FRONT...
WHICH WILL BE PROGRESSING S ACROSS THE NORTHERN WATERS. HIGH
PRESSURE WILL THEN BUILD BACK IN FROM THE NW IN THE WAKE OF THIS
COLD FRONT WITH SUBSIDING SEAS.

$$
HUFFMAN