000
AXPZ20 KNHC 242124
TWDEP 

TROPICAL WEATHER DISCUSSION     
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC FRI AUG 24 2007

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. 

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2100 UTC.

...TROPICAL WAVES...

TROPICAL WAVE ALONG THE COLOMBIAN COAST IS MOVING INTO THE AREA. 
CLUSTERS OF MODERATE TO ISOLATED STRONG CONVECTION ARE OVER THE 
SW CARIBBEAN AND WITHIN 50 NM OF 7N80W RELATED TO THE WAVE.  

TROPICAL WAVE ALONG 87W N OF 4N IS MOVING W 10-15 KT. ONLY 
ISOLATED MODERATE CONVECTION IS NOTED ALONG THE WAVE AXIS. 

...ITCZ...
ITCZ AXIS IS ALONG 6N80W 8N85W 15N94W 11N110W 10N125W 8N140W. 
NUMEROUS MODERATE ISOLATED STRONG FROM 5N TO 8N BETWEEN 77W AND 
84W. SCATTERED MODERATE ISOLATED STRONG WITHIN 90 NM OF AXIS 
BETWEEN 93W AND 99W. SCATTERED MODERATE WITHIN 60 NM OF AXIS 
BETWEEN 102W AND 114W...WITHIN 20 NM OF 10N125W...AND W OF 138W. 

...DISCUSSION...
W OF 110W...
TWO ANTICYCLONES DOMINATE THE FLOW OVER THE AREA WITH THE FIRST 
ONE CENTERED NEAR 28N128W AND THE SECOND...A MUCH LARGER 
CIRCULATION CENTERED NEAR 28N110W/NW MEXICO. A SMALL CYCLONIC 
CIRCULATION WAS LOCATED BETWEEN THE TWO FEATURES NEAR 26N118W. 
MODERATE MID TO UPPER LEVEL ELY FLOW PREVAILED S OF THE 
ANTICYCLONES AND WAS ADVECTING MID TO UPPER LEVEL MOISTURE WWD 
FROM THE ITCZ. DRY SUBSIDENT AIR PREVAILED OVER THE W PORTION OF 
THE AREA N OF 10N AND W OF 125W...LIMITING CONVECTION ALONG THE 
ITCZ W OF 120W. THE FLOW IS DIFFLUENT OVER THE TROPICS ENHANCING 
CONVECTION ALONG THE ITCZ E OF 120W. AT THE SURFACE... A BROAD 
WEAK 1010 MB LOW PRESS AREA IS NEAR 18N130W AND IS MARKED BY 
TURNING IN THE STRATOCUMULUS FIELD. ANOTHER WEAK AREA OF LOW 
PRESS IS NOTED ALONG THE ITCZ NEAR 10N126W. OTHERWISE...HIGH 
PRESS DOMINATED THE AREA N OF 20N W OF 125W. 

E OF 110W...
MODERATE MID TO UPPER NE FLOW PREVAILED OVER THE PACIFIC E OF 
110W. THIS FLOW IS ADVECTING COPIOUS AMOUNTS OF MID TO UPPER 
LEVEL MOISTURE/CONVECTIVE DEBRIS WWD ACROSS THE AREA. THIS FLOW 
IS ALSO DIFFLUENT IN NATURE AND IS SUPPORTING THE DEEP 
CONVECTION ALONG THE ITCZ. A SMALL CYCLONIC CIRCULATION IS 
LOCATED OVER CENTRAL MEXICO NEAR 21N100W...MOVING WWD 10-15 KT. 
AT THE SURFACE...CLUSTERS OF SCATTERED MODERATE CONVECTION ARE 
FLARING OVER THE GULF OF TEHUANTEPEC ASSOCIATED WITH THE ITCZ. 

$$
GR