000
AXPZ20 KNHC 270348
TWDEP 

TROPICAL WEATHER DISCUSSION      
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC FRI MAR 27 2009

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

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY 
THROUGH 0330 UTC.

...ITCZ...
AXIS ALONG 5N77W 5N80W 1N97W 6N128W 3N140W. SCATTERED MODERATE 
CONVECTION WITHIN 45 NM OF AXIS BETWEEN 83W AND 88W. SCATTERED 
MODERATE TO STRONG CONVECTION WITHIN 120 NM N OF AXIS W OF 125W. 

...DISCUSSION...
A LARGE UPPER LEVEL CYCLONIC CIRCULATION LOCATED W OF THE 
DISCUSSION AREA COMBINED WITH A RIDGE WITH AXIS FROM 30N130W TO 
17N116W IS PRODUCING DIFFLUENT FLOW ALOFT AND ENHANCING 
CONVECTIVE ACTIVITY N OF THE ITCZ W OF 125W. UPPER LEVEL 
TROPICAL WINDS ARE ADVECTING ABUNDANT TROPICAL MOISTURE NE 
THROUGH THE RIDGE AND INTO CENTRAL MEXICO. MID/UPPER LEVEL 
TROUGH EXTENDS FROM NW MEXICO THROUGH SOUTHERN BAJA CALIFORNIA 
TO 24N120W.
A 100-110 KT JET STREAM IS FROM 25N114W THEN ACROSS MEXICO
NEAR 27N100W.

IN THE DEEP TROPICS AN UPPER LEVEL ANTICYCLONIC CIRCULATION IS 
CENTERED NEAR 3N98W. STRONG SUBSIDENCE WITH DRY STABLE AIR AT 
THE MIDDLE AND UPPER LEVELS OF THE ATMOSPHERE COVERS THE AREA S 
OF 15N E OF 115W...WITH ONLY SCATTERED LOW CLOUDS ACROSS THIS 
AREA.

SURFACE RIDGE WITH AXIS FROM 32N138W 24N129W TO 18N112W. BROKEN 
TO OVERCAST STRATOCUMULUS CLOUDS WITHIN THE RIDGE N OF 15N W OF 
115W.

$$
DGS