000
AXPZ20 KNHC 232130
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 
2205 UTC SUN APR 23 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 
2045 UTC.

...ITCZ...

INTERTROPICAL CONVERGENCE ZONE...7N78W 7N100W 8N110W 4N130W 
4N140W. SCATTERED MODERATE TO STRONG FROM 5N TO 8N E OF 80W AND 
FROM 5N TO 7N BETWEEN 81W AND 84W. SCATTERED MODERATE 90 NM 
EITHER SIDE OF AXIS BETWEEN 116W AND 123W. SCATTERED MODERATE TO 
STRONG 60 NM EITHER SIDE OF AXIS BETWEEN 126W AND 129W.

...DISCUSSION...

N OF 15N...
UPPER LEVEL TROUGH EXTENDING OVER SOUTHERN CALIFORNIA/BAJA 
CALIFORNIA PENINSULA WITH MID-LEVEL CYCLONIC CIRCULATION NEW 
36N117W SHOULD SLOWLY FILL AND MOVE NE OVER THE ROCKIES DURING 
THE NEXT 24 HOURS. SUBTROPICAL JET ENTERS AREA NEAR 17N140W 
EXTENDING E TO 23N113W. PLUME OF MID TO UPPER TROPOSPHERIC 
MOISTURE STRETCHES S OF THE JET ALONG 15N. FURTHER W...A MID- TO 
UPPER LEVEL TROUGH MOVES OVER THE NW AREA N OF 18N ALONG 140W. 
WIDESPREAD CIRRUS EXTENDS E OF THE TROUGH AXIS TO 129W.  

S OF 15N...
NARROW...WEAK RIDGE EXTENDING ALONG 5N W OF 120W IS INITIATING 
MULTIPLE CONVECTIVE FLARE-UPS ALONG THE ITCZ IN THIS REGION.
UPPER WESTERLIES DOMINATE REMAINDER OF AREA WITH THE STRONGEST 
WINDS OF 40 TO 50 KNOTS LOCATED FROM 10N TO 15N BETWEEN 90W AND 
105W. DIFFLUENT UPPER FLOW IS TRIGGERING STRONG SCATTERED 
THUNDERSTORMS OVER THE GULF OF PANAMA.

$$
ROBERTS