000
AXPZ20 KNHC 211504
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC TUE MAR 21 2006

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS 
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND 
METEOROLOGICAL ANALYSIS.

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

...ITCZ...
ITCZ AXIS ALONG 4N76W 2N90W 5N107W 2N140W. NO SIGNIFICANT 
CONVECTION.

...DISCUSSION...
MID/UPPER LEVEL RIDGE IS MOVING INTO THE FAR W PORTION OF THE 
DISCUSSION AREA...N OF 20N W OF AROUND 130W. DOWNSTREAM DEEP 
LAYERED TROUGH EXTENDS FROM A WELL DEFINED CYCLONIC CIRCULATION 
N OF THE AREA NEAR LOS ANGELES TO 32N120W 13N130W. ASSOCIATED
SURFACE COLD FRONT EXTENDS FROM TIJUANA MEXICO TO 27N123W TO 
26N130W. OTHER THEN SOME BRISK NW WINDS BEHIND THE FRONT VERY 
LITTLE WEATHER IS ASSOCIATED WITH THE FRONT. A BAND OF HIGH 
LEVEL MOISTURE IS MOVING NE ACROSS CENTRAL BAJA CALIFORNIA
OTHERWISE THE AREA REMAINS DRY AT THE MID AND UPPER LEVELS OF THE
ATMOSPHERE N OF 20N BETWEEN 110W AND 135W. AT THE LOW LEVELS 
HOWEVER...BROKEN TO OVERCAST STRATUS AND STRATOCUMULUS CLOUDS 
COVER THE ARE N OF 20N W OF 110W.

MID TO UPPER LEVEL RIDGE EXTENDS FROM AN ANTICYCLONIC 
CIRCULATION OVER CENTRAL AMERICA NWD INTO MEXICO. STRONG 
SUBSIDENCE COVERS SOUTHERN MEXICO AND CENTRAL AMERICA AND THE 
PACIFIC S OF 15N W OF 105W.

$$
DGS