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000
AXPZ20 KNHC 230911
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC WED APR 23 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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 0900 UTC.


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

ITCZ FROM 4N96W TO 3N110W TO 6N130W TO 3N135W TO 4N140W. SCATTERED MODERATE ISOLATED STRONG CONVECTION FROM 2N-5N BETWEEN 100W-105W AND FROM 3N-10N BETWEEN 115W-135W.


...DISCUSSION...

AN UPPER LEVEL RIDGE ACROSS THE FAR NW PORTION OF THE DISCUSSION AREA N OF 20N W OF 130W. AN UPPER LEVEL TROUGH EXTENDS FROM NORTHERN BAJA CALIFORNIA SW TO 22N120W. A BROAD UPPER LEVEL RIDGE IS E OF THE TROUGH ACROSS NORTHERN MEXICO. EXCEPT FOR SOME HIGH LEVEL MOISTURE WITHIN 200 NM E OF THE TROUGH AXIS STRONG SUBSIDENCE WITH DRY AND STABLE AIR AT THE MIDDLE AND UPPER LEVELS IS FROM 15N-30N W OF 105W. IN THE DEEP TROPICS AN UPPER LEVEL ANTICYCLONIC CIRCULATION IS CENTERED NEAR 9N124W. UPPER LEVEL DIFFLUENCE WITH THE ANTICYCLONE IS ENHANCING CONVECTION FROM 3N-10N BETWEEN 115W-135W.

A LARGE SURFACE RIDGE IS N OF 15N W OF 115W. THE PRES GRADIENT BETWEEN THE RIDGE AND THE ITCZ IS TIGHT ENOUGH FOR 15-20 KT TRADE WINDS AND SEAS TO 9 FT IN NW SWELL FROM 7N-20N W OF 120W. LARGE CROSS EQUATORIAL SLY SWELL WILL SPREAD ACROSS A LARGE PORTION OF THE AREA S OF 15N WITHIN THE NEXT 24 TO 48 HOURS.

$$ DGS

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