000
AXPZ20 KNHC 220910
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC TUE APR 22 2008

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...
ITCZ AXIS ALONG 5N78W 6N105W 9N120W 6N140W. SCATTERED MODERATE 
TO STRONG CONVECTION WITHIN 120 NM N OF AXIS FROM 90W-94W AND 
WITHIN 200 NM S OF AXIS FROM 120W-128W.

...DISCUSSION...
WEAK MID/UPPER LEVEL TROUGH EXTENDS FROM 32N128W TO 25N136W.
SUBTROPICAL JETSTREAM WITH WINDS 95-105 KT IS S OF THE TROUGH 
FROM 22N140W 28N120W THEN ACROSS CENTRAL BAJA CALIFORNIA WHERE
WINDS DECREASE TO 70-75 KT. MODERATE TO STRONG SUBSIDENCE IS
WITHIN 240 NM N OF THE JET AXIS...WITH BROKEN/OVERCAST CIRRUS
CLOUDS WITHIN 300 NM S OF THE JET. 

UPPER LEVEL ANTICYCLONIC CIRCULATION CENTERED NEAR 9N124W WITH 
RIDGE EXTENDING E TO 12N104W. RIDGE CREST FLATTENED BY ABOVE 
MENTIONED TROUGH MAINTAINING ZONAL WINDS FROM 15N-20N. DIFFLUENT 
FLOW ASSOCIATED WITH THE ANTICLONIC CIRCULATION IS ENHANCING 
CONVECTION ALONG ITCZ. ALSO IN THE DEEP TROPICS AN UPPER LEVEL 
CYCLONIC CIRCULATION CENTERED NEAR 2N102W.

HIGH PRES RIDGE EXTENDS FROM A 1027 MB HIGH NEAR 32N136 TO 
16N112W. BROKEN/OVERCAST STRATUS/STRATOCUMULUS CLOUDS WITHIN THE 
RIDGE N OF 15N W OF 115W.

$$
DGS