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AXPZ20 KNHC 050907
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC TUE MAY 05 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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 0900 UTC.


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

MONSOON TROUGH FROM 6N94W TO 1010 MB LOW NEAR 5N100W TO 3N105W TO 5N113W. ITCZ 5N113W TO 2N130W TO 4N140W. SCATTERED MODERATE TO STRONG CONVECTION WITHIN 800 NM N OF AXIS FROM 100W-102W AND WITHIN 120 NM N OF AXIS FROM 118W-121W.


...DISCUSSION...

AN UPPER LEVEL TROUGH EXTENDS FROM 32N134W TO 25N135W. A BROAD UPPER LEVEL RIDGE IS SE OF THE TROUGH AND DOMINATES MUCH OF THE DISCUSSION AREA WITH A COUPLE OF ANTICYCLONIC CIRCULATIONS ONE CENTERED NEAR 12N109W AND ANOTHER NEAR 9N135W. A 95-100 KT JETSTREAM ACROSS THE NORTHERN PERIPHERY OF THE RIDGE EXTENDS FROM 25N110W ACROSS CENTRAL BAJA CALIFORNIA INTO NORTHERN MEXICO.

THE LARGE SW SOUTHERN HEMISPHERIC SWELL HAS SUBSIDED TO 6-8 FT AND WILL CONTINUE TO SUBSIDE. THE HIGH PRES NW OF THE DISCUSSION AREA WILL BECOME STRONGER WED NIGHT AND THE PRESSURE GRADIENT WILL TIGHTEN...LEADING TO NE WINDS INCREASING TO 20-25 KT FROM 11N-16N BETWEEN 123W-135W WITH SEAS BUILDING 8-10 FT. AN AREA OF NW SWELL TO 8 FT WILL MOVE INTO THE NORTHERN PORTION OF THE AREA N OF 29N BETWEEN 120W-127W LATE TUE.

$$ DGS

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