000
AXPZ20 KNHC 150930
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC FRI APR 15 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... 
THE ITCZ EXTENDS FROM 06N91W TO 05N95W TO 06N103W TO 02N125W.
SCATTERED MODERATE CONVECTION IS FROM 04N TO 07N BETWEEN 109W
AND 119W.

...DISCUSSION...                                               
A 1031 MB HIGH IS CENTERED NEAR 35N137W WITH A RIDGE AXIS
EXTENDING SE TO NEAR 18N110W. THE PRESSURE GRADIENT BETWEEN THE
RIDGE AND LOWER PRESSURE ASSOCIATED WITH THE ITCZ REGION
CONTINUES TO SUPPORT FRESH TO STRONG TRADES GENERALLY FROM 08N
TO 19N W OF 128W WITH SEAS TO 11 FT PRIMARILY IN NW SWELL.

THE SURFACE HIGH IS MOVING E TOWARD THE CALIFORNIA COAST
RESULTING IN A STRENGTHENING PRESSURE GRADIENT BETWEEN THE HIGH
AND DEVELOPING LOW PRESSURE ACROSS THE SW UNITED STATES. LATEST
SCATTEROMETER DATA INDICATES FRESH TO STRONG NW TO N WINDS
GENERALLY N OF 28N E OF 122W WITH SEAS RANGING FROM 9 TO 11 FT.
BY SAT...THE HIGH WILL BEGIN TO GRADUALLY WEAKEN AND THE LOW
PRESSURE AREA ACROSS THE INTERMOUNTAIN WEST WILL EJECT E-NE INTO
THE CENTRAL U.S. PLAINS WITH WINDS ACROSS THE NE WATERS
DIMINISHING INTO GENTLE TO MODERATE NORTHERLIES. HOWEVER...GIVEN
THE FETCH LENGTH AND DURATION OF THE STRONGER WINDS...COMBINED
SEAS WILL REMAIN 10 TO 12 FT ON SAT IN NW SWELL...THIS AFTER
PEAKING NEAR 16 FT FRI NIGHT AROUND 16/0000 UTC NEAR 30N119W. BY
SUN MORNING THE AREA OF SEAS WILL SUBSIDE COVERING A SMALLER
AREA FROM 14N TO 29N BETWEEN 110W AND 124W. IN THE MEDIUM
RANGE...GLOBAL MODELS ARE IN AGREEMENT ON A NEW BATCH OF NW
SWELL OF 8 TO 11 FT ACCOMPANIED BY A COLD FRONT ENTERING THE NW
CORNER OF THE DISCUSSION AREA BY SUN AFTERNOON.

$$
HUFFMAN