000
AXPZ20 KNHC 291524
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC SAT JUL 29 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.

...SPECIAL FEATURES...

LOW PRESSURE 12N112W 1009 MB MOVE W 10 KT.  ASSOCIATED AREA OF 
SCATTERED MODERATE TO STRONG CONVECTION IS WITHIN 75 NM OF 
14.4N112.4W.  IT IS POSSIBLE THE SYSTEM WILL SLOWLY DEVELOP OVER 
THE NEXT SEVERAL DAYS.

...TROPICAL WAVES...

TROPICAL WAVE N OF 5N ALONG 82W IS MOVING W 15-20 KT. ISOLATED 
MODERATE CONVECTION IS DIMINISHING IN THE GULF OF PANAMA.

TROPICAL WAVE N OF 3N ALONG 97W IS MOVING W 15 KT. SCATTERED 
MODERATE WITH ISOLATED STRONG CONVECTION IS BETWEEN 95W AND 100W 
NORTH OF 10N.  SOME SLIGHT ROTATION OF THE CONVECTIVE PATTERN IS 
OBSERVED.

TROPICAL WAVE FROM 4N TO 14N ALONG 112W.  SEE LOW IN SPECIAL 
FEATURES SECTION.

TROPICAL WAVE FROM 3N TO 13N ALONG 139W IS MOVING W 15 KT.  
SCATTERED MODERATE CONVECTION IS WITHIN THE ITCZ REGION.  NO 
SIGNS OF CIRCULATION ARE OBSERVED.

..ITCZ...

ITCZ AXIS IS ALONG THE LINE...6N77W 6N90W 12N112W 15N125W 
9N140W.
SCATTERED MODERATE WITH ISOLATED STRONG CONVECTION IS WITHIN 60 
NM OF THE POINT 15.7N98.8W.  SCATTERED MODERATE TO STRONG 
CONVECTION IS WITHIN 75 NM OF THE POINT 14.6N112.4W.

...DISCUSSION...

MOSTLY MIDDLE LEVEL CYCLONIC CIRCULATION IS CENTERED NEAR 
27N123.5W AND IS DRIFTING WEST NORTHWEST. THE RADIUS OF THE 
CIRCULATION IS APPROXIMATELY 240 NM.  NO WEATHER AT THE SURFACE 
IS OBSERVED ASSOCIATED WITH THIS SYSTEM. OTHERWISE THE AREA 
NORTH OF THE ITCZ IS A BROAD RIDGE.  SOUTH OF THE ITCZ BROAD 
TROUGH IS ANALYZED.

AT THE SURFACE A SURFACE TROUGH IS ALONG 122.5N FROM 21N TO 
30N.  THIS SYSTEM IS ASSOCIATED WITH THE MIDDLE LEVEL SYSTEM 
MENTIONED ABOVE.  THE TROUGH IS MOVING WEST 10 KT.  BOTH TO THE 
EAST OF THE TROUGH AND TO THE WEST OF THE TROUGH NORTH OF 20N A 
WEAK RIDGE IS ANALYZED.  SOUTH OF 20N BROAD TROUGH IS ANALYZED.

$$
LL