000
AXPZ20 KNHC 141509
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC SAT MAR 14 2009

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

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC.

...ITCZ...
AXIS ALONG 8N82W 4N95W 5N140W. NO SIGNIFICANT CONVECTION.

...DISCUSSION...
BROAD MID/UPPER LEVEL RIDGE COVERS THE DISCUSSION AREA W OF 125W.
BROKEN TO OVERCAST MIDDLE AND HIGH CLOUDS AREA FLOWING THROUGH 
THE RIDGE N OF 17N. A MID/UPPER LEVEL TROUGH IS MOVING ACROSS 
THE NORTHERN PORTIONS OF THE BAJA PENINSULA AND GULF OF 
CALIFORNIA. THE AIR IS RATHER DRY AND NO SIGNIFICANT WEATHER IS 
ASSOCIATED WITH THE TROUGH. A 100-115 KT JET STREAM EXTENDS FROM 
30N130W TO THE SOUTHERN TIP OF BAJA CALIFORNIA....THE WINDS 
DECREASE AS IT CURVES TO THE NE AROUND THE BASE OF THE TROUGH.
A BROAD RIDGE IS E OF THE TROUGH.

AN UPPER LEVEL TROUGH IN THE DEEP TROPICS WITH AXIS FROM 15N103W
TO THE EQUATOR AT 111W. AN E-W RIDGE EXTENDS FROM AN 
ANTICYCLONIC CIRCULATION OVER COLOMBIA TO NEAR 3N97W. A LARGE 
AREA OF STRONG SUBSIDENCE WITH DRY AIR AT THE MID/UPPER LEVELS 
OF THE ATMOSPHERE COVERS THE AREA S OF 20N W OF 120W. THE 
SUBSIDENCE HAS SUPPRESSED CONVECTIVE ACTIVITY ACROSS THIS AREA.

SURFACE RIDGE WITH AXIS FROM 32N135W TO 15N110W. A WEAK TROUGH 
IS EMBEDDED WITHIN THE RIDGE FROM 19N134W TO 15N137W. OVERCAST 
STRATOCUMULUS CLOUDS ARE WITHIN THE RIDGE N OF 16N W OF 115W.

$$
DGS