000
AXPZ20 KNHC 080912
TWDEP 

TROPICAL WEATHER DISCUSSION   
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC FRI APR 08 2011

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

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY 
THROUGH 0900 UTC.

...ITCZ...
AXIS FROM 7N78W 4N120W 00N140W. SCATTERED MODERATE TO ISOLATED 
STRONG CONVECTION WITHIN 100 NM S OF AXIS FROM 80W-84W AND 
WITHIN 120 NM N OF AXIS FROM 89W-92W.

...DISCUSSION...
UPPER LEVEL TROUGH ACROSS THE N PORTION OF THE DISCUSSION AREA 
FROM 32N121W TO 27N130W. A 75-95 KT JETSTREAM S OF THE TROUGH 
EXTENDS FROM 27N135W 26N125W TO CENTRAL BAJA CALIFORNIA. 
MODERATE TO STRONG SUBSIDENCE IS WITHIN 150 NM N OF THE JET 
AXIS. A BROAD UPPER LEVEL RIDGE IS S OF 20N W OF 110W. UPPER 
LEVEL MOISTURE FROM CONVECTION W OF THE AREA IS MOVING THROUGH 
THE WESTERN PORTION OF THE  RIDGE. IN THE DEEP TROPICS AN UPPER 
LEVEL TROUGH EXTENDS FROM 20N110W TO 10N109W.

AN E-W UPPER LEVEL RIDGE EXTENDS FROM AND ANTICYCLONIC 
CIRCULATION OVER VENEZUELA TO 10N103W. EXCEPT FOR A FEW SHOWERS 
ALONG THE COAST OF GUATEMALA MODERATE TO STRONG SUBSIDENCE WITH 
DRY STABLE AIR AT THE MIDDLE AN UPPER LEVELS IS N OF 10N E OF 
110W. SCATTERED SHOWERS AND TSTMS ARE ON THE S SIDE OF THE RIDGE 
AXIS.

SURFACE RIDGE COVERS THE AREA N OF 15N W OF 115W...WITH NE 
TRADES TO 20 KT GENERALLY N OF 6N W OF 125W. LARGE NW SWELLS UP 
TO 14 FT ARE ALSO PROPAGATING THROUGH THIS AREA. BROKEN/OVERCAST 
STRATOCUMULUS CLOUDS ARE WITHIN THE RIDGE. ELY 20 KT WINDS ARE 
ALSO BLOWING THROUGH GULF OF PAPAGAYO. NW WINDS BETWEEN A TROUGH 
OVER THE WESTERN U.S. AND THE RIDGE ARE TO 20 KT N OF 26N E OF 
130W.

$$
DGS