000
AXPZ20 KNHC 262146
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC FRI MAY 26 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 
2115 UTC.

...SPECIAL FEATURE...

A PERSISTENT AREA OF CONVECTION IS NOW ANALYZED AS A LOW PRES 
1007 MB NEAR 14.5N101W. SCATTERED MODERATE ISOLATED STRONG 
CONVECTION IS NOTED WITHIN 210 NM OVER SE SEMICIRCLE. CONVECTION 
IS SUPPRESSED OVER THE NW SEMICIRCLE DUE TO STRONG UPPER 
SUBSIDENCE. THE LOW HAS BEEN DRIFTING SLOWLY N TODAY AND IS 
EXPECTED TO CONTINUE TO MOVE SLOWLY N FOR THE NEXT COUPLE OF 
DAYS.

...TROPICAL WAVES...

A TROPICAL WAVE ALONG 85W N OF 2N HAS MOVED W 10 KT THE PAST 24 
HOURS.  SCATTERED MODERATE AND ISOLATED STRONG CONVECTION NOTED 
WITH 30 NM OF AXIS AT 5N. A MORE IMPRESSIVE AREA OF CONVECTION 
CONTINUES WELL E OF THE WAVE OVER THE GULF OF PANAMA WITH THE 
STRONGEST CONVECTION FLARING OVER PANAMA AT THE MOMENT.

..ITCZ...

ITCZ AXIS IS CENTERED ALONG...8N83W 7N89W 14N100W 9N110W 9N121W 
6N140W. SCATTERED MODERATE ISOLATED STRONG WITHIN 60 NM EITHER 
SIDE OF LINE 6N78W 5N88W AND WITHIN 90 NM EITHER SIDE OF LINE 
9N106W 8N115W AND WITHIN 15 NM OF 10N123W.
 
...DISCUSSION...

AN UPPER CYCLONE IS MOVING ONSHORE THE OREGON COAST WITH A 
SHORTWAVE TROUGH EXTENDED S INTO THE DISCUSSION AREA ALONG 
32N122W THROUGH ANOTHER CYCLONE ESTIMATED NEAR 25N116W TO A BASE 
NEAR 10N116W. DRY UPPER AIR IS INDICATED N OF 21N W OF 120W AND 
N OF THE ITCZ BETWEEN 120W AND 100W AND S OF THE ITCZ ALONG 3N 
FOR THE ENTIRE DISCUSSION AREA. AT THE LOW LEVELS A RIDGE 
EXTENDS ALONG 32N138W TO 11N110W WITH BROKEN TO LOCALLY OVERCAST 
STRATOCUMULUS.

AN UPPER ANTICYCLONE IS CENTERED NEAR 8N122W WITH ITS ENVELOPE 
OF ANTICYCLONIC FLOW DOMINATING THE DISCUSSION AREA N OF THE 
ITCZ TO 21N BETWEEN 140W AND 120W. DEBRIS MOISTURE FROM ITCZ 
CONVECTION W OF 123W IS ADVECTED N BUT REMAINS WITHIN THE UPPER 
ANTICYCLONIC FLOW.

AN UPPER ANTICYCLONE IS CENTERED OVER THE W CARIBBEAN NEAR 
14N79W WITH BROAD RIDGE CRESTING ALONG POINTS 20N98W 27.5N81W 
27.5N66W. UPPER DEBRIS MOISTURE FROM ITCZ CONVECTION BETWEEN 
102W AND 115W...AND CONVECTION ASSOCIATED WITH THE LOW PRES AT 
14.5N101W...IS ADVECTED NE ALONG THE NW PERIPHERY OF THE 
RIDGE...ROUGHLY WITHIN 210 NM EITHER SIDE OF POINTS 15.5N95.5W 
22N85.5W 25N70W 23N55W. UPPER DIFFLUENCE UNDER THE RIDGE IS ALSO 
ENHANCING CONVECTION ALONG THE ITCZ BETWEEN 90W AND 75W BUT THE 
DEBRIS MOISTURE IS TRAPPED IN ROUGHLY THE SAME AREA. 

$$
NELSON