000
AXPZ20 KNHC 130909
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC FRI FEB 13 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 ALONG 6N77W TO THE EQUATOR AT 95W TO 2N115W 1N140W. NO 
SIGNIFICANT CONVECTION.

...DISCUSSION...
MID/UPPER LEVEL TROUGH OVER THE NW PORTION OF THE DISCUSSION AREA
FROM 32N125W TO 26N140W. AN UPPER LEVEL RIDGE IS S OF THE TROUGH 
GENERALLY S OF 25N W OF 115W. ABUNDANT MID TO UPPER LEVEL 
MOISTURE IS MOVING THROUGH THE RIDGE. A 120-135 KT JET EXTENDS 
FROM 23N140W TO 26N117W THEN ACROSS CENTRAL BAJA CALIFORNIA INTO 
NORTHERN MEXICO WHERE WINDS DECREASE TO 100 KT.

UPPER LEVEL TROUGH IN THE TROPICS WITH AXIS FROM 19N110W TO 
4N114W. UPPER LEVEL RIDGE EXTENDS FROM COLOMBIA ACROSS CENTRAL 
AMERICA TO THE YUCATAN PENINSULA THEN N INTO THE GULF OF MEXICO. 
STRONG SUBSIDENCE WITH DRY STABLE AIR COVERS THE AREA FROM 
5N-25N E OF 120N...WITH MOSTLY CLEAR SKIES ACROSS THIS REGION.

SURFACE RIDGE WITH AXIS FROM 32N140W TO 15N107W. BROKEN TO 
OVERCAST STRATOCUMULUS CLOUDS BLANKET THE AREA N OF 15N W OF 
110W.

$$
DGS