000
AXPZ20 KNHC 010908
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC WED APR 01 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 EXTENDS FROM 4N77W 3N95W 1N110W 3N140W. SCATTERED MODERATE 
TO STRONG CONVECTION WITHIN 50 NM N OF AXIS FROM 81W-83W.

...DISCUSSION...
MID TO UPPER-LEVEL TROUGH EXTENDS SW ARIZONA THROUGH NORTHERN 
BAJA CALIFORNIA TO NEAR 26N140W. A 95-105 KT  SUBTROPICAL 
JETSTREAM IS S OF THE TROUGH FROM 24N130W TO 26N119W WHERE WINDS 
INCREASE TO 120-130 KT...THE JET CONTINUES ACROSS CENTRAL BAJA 
CALIFORNIA INTO NORTHERN MEXICO. BROKEN TO OVERCAST CIRRUS 
CLOUDS ARE WITHIN 300 NM S OF THE JET W OF 130W THEN THE CIRRUS 
BECOMES A NARROW BAND E OF 130W TO NORTHERN MEXICO. AN UPPER 
LEVEL ANTICYCLONIC CIRCULATION IS CENTERED NEAR 12N109W...WITH 
ANTICYCLONIC FLOW COVERING THE AREA S OF THE TROUGH BETWEEN 90W 
AND 125W. MODERATE TO STRONG SUBSIDENCE WITH DRY STABLE AIR IS 
ASSOCIATED WITH THE ANTICYCLONIC CIRCULATION S OF 15N E OF 115W 
EXCEPT FOR SOME DEBRIS CLOUDS FROM EARLY CONVECTIVE ACTIVITY SW 
OF A LINE FROM PANAMA TO THE EQUATOR AT 100W. OTHERWISE JUST A 
FEW LOWER CLOUDS ACROSS THIS AREA.

STRONG SURFACE HIGH PRES LOCATED NW OF THE DISCUSSION AREA WITH 
RIDGE ENTERING THE AREA AT 32N138W TO 13N108W. THE GRADIENT WITH 
THE RIDGE IS SUPPORTING MODERATE TO STRONG NE WINDS...20-25 KT...
N OF 10N W OF AROUND 127W. BROKEN/OVERCAST STRATOCUMULUS CLOUDS
WITHIN THE RIDGE N OF 18N W OF 115W.

$$
DGS