000
AXPZ20 KNHC 300906
TWDEP 

TROPICAL WEATHER DISCUSSION      
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC MON MAR 30 2009

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 IS ALONG 8N82W 2N110W 4N125W 5N140W. NO SIGNIFICANT 
CONVECTION.

...DISCUSSION...
MID/UPPER LEVEL TROUGH EXTENDS FROM THE WRN U.S. TO 32N125W TO 
25N140W. A 90-100 KT JET STREAM IS S OF THE TROUGH AXIS FROM 
21N140W TO 27N120W WHERE WINDS INCREASE TO 110-115 KT...THEN 
CONTINUE TO CENTRAL BAJA CALIFORNIA INTO NW MEXICO. BROKEN TO 
OVERCAST CIRRUS CLOUD ARE WITHIN 400 NM S OF THE JET. TRANSVERSE 
BANDING IS NOTED IN THE CIRRUS CLOUDS W OF 130W...INDICATING 
POSSIBLE UPPER LEVEL TURBULENCE. A BROAD UPPER LEVEL RIDGE IS SE 
OF THE TROUGH WITH MOSTLY WLY FLOW ALOFT.

IN THE DEEP TROPICS A LARGE UPPER LEVEL ANTICYCLONIC CIRCULATION 
IS CENTERED NEAR 6N107W...WITH ANTICYCLONIC FLOW COVERING THE 
AREA S OF 15N BETWEEN 100W AND 125W. WIDESPREAD STRONG SUBSIDENCE
WITH A DRY STABLE ATMOSPHERE IS S OF 15N E OF 115W. THE 
SUBSIDENCE IS SUPPRESSING CONVECTION ALONG THE ITCZ. W OF 
ANTICYLONE IS AN UPPER LEVEL TROUGH FROM 10N125W TO THE EQUATOR 
AT 131W.

SURFACE RIDGE WITH AXIS ALONG 32N136W TO 20N115W. A SURFACE 
TROUGH EXTENDS FROM CALIFORNIA/ARIZONA THROUGH CENTRAL BAJA 
CALIFORNIA TO 24N113W. NO SIGNIFICANT WEATHER IS ASSOCIATED WITH 
THE TROUGH.

$$
DGS