000
AXPZ20 KNHC 282222
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC FRI APR 28 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 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2100 UTC.

...ITCZ...
ITCZ AXIS IS CENTERED ALONG 8N81W 7N100W 7N115W 6N125W 7N140W. 
SCATTERED MODERATE ISOLATED STRONG CONVECTION IS LOCATED WITHIN 
90 NM EITHER SIDE OF A 7.5N114W 7N124W LINE AND WITHIN 120 NM 
EITHER SIDE OF A 7N130W 7N140W LINE.

...DISCUSSION...
N OF 15N...
DOMINANT FEATURE ALOFT OVER THE DISCUSSION AREA IS A MIDDLE/ 
UPPER LEVEL TROUGH WITH ITS AXIS EXTENDING FROM A CYCLONIC 
CIRCULATION OVER NEW MEXICO SW THROUGH N CENTRAL BAJA CALIFORNIA 
TO NEAR 15N128W. CYCLONIC FLOW IS LOCATED WITHIN 10 DEGREES 
EITHER SIDE OF THE TROUGH AXIS. A JET EXTENDS FROM THE BASE OF 
THE TROUGH NEAR 15N118W THROUGH 26N109W. FURTHER UPSTREAM AN 
UPPER LEVEL RIDGE IS APPROACHING THE NW PART OF THE AREA.

S OF 15N...
UPPER LEVEL WESTERLY FLOW COVERS THE DEEP TROPICS W OF 110W. A 
WEAK MIDDLE/UPPER LEVEL TROUGH HAS ITS AXIS ALONG 101W.

$$
CAB