Tropical Weather Discussion
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000
AXPZ20 KNHC 030920
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SUN MAY 03 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 6N80W TO 4N95W TO 8N115W TO 6N127W. ITCZ
6N127W TO 8N140W. SCATTERED TO NUMEROUS MODERATE TO STRONG
CONVECTION FROM 1N-7N BETWEEN 77W-91W. NUMEROUS MODERATE TO
STRONG CONVECTION WITHIN 330 NM S OF AXIS FROM 117W-122W.

...DISCUSSION...

AN UPPER LEVEL TROUGH ACROSS THE FAR NW PORTION OF THE
DISCUSSION EXTENDS FROM CYCLONIC CIRCULATION JUST N OF THE AREA
NEAR 34N128W TO 25N140W. A BROAD UPPER LEVEL RIDGE IS SE OF THE
TROUGH AND DOMINATES MUCH OF THE DISCUSSION AREA WITH AN
ANTICYCLONIC CIRCULATION CENTERED NEAR 13N113W. A 100-125 KT
JETSTREAM ACROSS THE NORTHERN PERIPHERY OF THE RIDGE EXTENDS
FROM 21N140W TO 30N120W INTO NORTHERN BAJA CALIFORNIA. STRONG
SUBSIDENCE WITH DRY AND STABLE AIR AT THE MIDDLE AND UPPER
LEVELS N OF 20N W OF 110W.

A SURFACE RIDGE IS N OF 15N W OF 105W. NLY WINDS 20-30 KT WILL
CONTINUE TO BLOW THROUGH THE GULF OF TEHUANTEPEC THEN WILL
DECREASE TO BELOW 20 KT SUN NIGHT. OTHERWISE LARGE SWELL FROM
THE SOUTHERN HEMISPHERE WILL SPREAD ACROSS MOST OF THE AREA W OF
90W. THE SWELL WILL SUBSIDE TO LESS THAN 8 FT MON NIGHT.

$$
DGS


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