000
AXPZ20 KNHC 301507
TWDEP 

TROPICAL WEATHER DISCUSSION   
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC WED MAR 30 2011

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W.

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY 
THROUGH 1500 UTC.

...ITCZ...
AXIS IS ALONG 4N89W 2N95W 4N107W 1N140W. SCATTERED MODERATE 
CONVECTION WITHIN 50 NM N OF AXIS FROM BETWEEN 117W-126W.

...DISCUSSION...
UPPER LEVEL TROUGH EXTENDS FROM NORTHERN MEXICO ACROSS CENTRAL 
BAJA CALIFORNIA TO AN ELONGATED CYCLONIC CIRCULATION OVER THE 
FAR NW PORTION OF THE DISCUSSION AREA NEAR 28N140W. A 90 KT 
JETSTREAM S OF THE TROUGH AXIS EXTENDS FROM 25N140W TO 26N135W 
THEN SE TO 22N115W. BROKEN TO OVERCAST HIGH CLOUDS ARE WITHIN 
500 NM S OF JET AXIS W OF 137W. S OF JET AN UPPER LEVEL RIDGE 
DOMINATES THE AREA S OF 24N W OF 120W. AN UPPER LEVEL TROUGH 
WITH AXIS FROM 20N110W TO 1N105W. IN THE DEEP TROPICS AN UPPER 
LEVEL RIDGE EXTENDS FROM AN ANTICYCLONIC CIRCULATION NEAR 9N88W 
TO EL SALVADOR AND HONDURAS AND INTO THE NW CARIBBEAN. MODERATE 
TO STRONG SUBSIDENCE WITH DRY STABLE AIR AT THE MIDDLE AND UPPER 
LEVELS IS N OF 5N BETWEEN 85W-100W.

A SURFACE RIDGE COVERS THE AREA N OF 15N W OF 118W. BROKEN TO 
OVERCAST STRATOCUMULUS CLOUDS BLANKET THE AREA WITHIN THE RIDGE. 
ELY TRADES TO 20 KT ARE ALONG THE RIDGE...FROM  N OF 5N W OF 
125W. OTHERWISE LARGE NW SWELLS ACROSS THE AREA W OF 115W. 
SURFACE TROUGH IS ANALYZED IN THE GULF OF PANAMA FROM 8N78W TO 
6N79W. SCATTERED STRONG CONVECTION IS WITHIN 70 NM W OF THE 
TROUGH AXIS.

$$
DGS