000
AXPZ20 KNHC 121503
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC SUN MAR 12 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 IS CENTERED ALONG 6N78W 4N110W 4N125W 1N140W. 
SCATTERED MODERATE ISOLATED STRONG WITHIN 45 NM EITHER SIDE OF 
AXIS FROM 124W TO 127W. 

...DISCUSSION...
BROAD MID/UPPER LEVEL TROUGH COVERS THE AREA N OF 25N E OF 130W 
WITH STRONG SHORT WAVE NE OF THE AREA MOVING INTO ARIZONA. 
ANOTHER TROUGH IS OVER THE FAR W PORTION OF THE AREA WITH A MID 
LEVEL CYCLONIC CIRCULATION JUST APPROACHING THE DISCUSSION AREA 
NEAR 21N140W. A 90-100 KT JET STREAM WITH CORE FROM FROM 27N124W 
TO 28N122W INTO NW MEXICO WHERE WINDS INCREASE TO 115-125 
KT...THEN NE INTO NEW MEXICO. ANTICYCLONIC CIRCULATION CENTERED 
OVER THE NORTHERN YUCATAN PENINSULA WITH MID LEVEL RIDGE 
EXTENDING W INTO THE PACIFIC TO NEAR 10N120W. MODERATE TO STRONG 
SUBSIDENCE OVER CENTRAL AMERICA AND INTO THE PACIFIC S OF 17N TO 
THE ITCZ E OF 120W AND S OF 10N W OF 120W.

SURFACE RIDGE WITH AXIS FROM 32N140W TO THE W COAST OF MEXICO 
NEAR PUERTO VALLARTA. BROKEN TO OVERCAST STRATOCUMULUS N OF 15N
W OF 110W...WITH SCATTERED TO BROKEN CIRRUS FROM 15N-25N W OF 
110W.

$$
DGS