000
AXPZ20 KNHC 090917
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC THU JUL 09 2009

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

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC.

...TROPICAL WAVES...
TROPICAL WAVE N OF 8N TO THE COAST OF MEXICO AT THE GULF OF 
TEHUANTEPEC ALONG 95W MOVING W 10-15 KT. ONLY ISOLATED SHOWERS 
ALONG THE WAVE.

TROPICAL WAVE FROM 4N-13N ALONG 111W MOVING W 10-15 KT. NUMEROUS 
MODERATE TO STRONG CONVECTION FROM 5N-9N BETWEEN 107W-114W. 
SCATTERED MODERATE FROM 11N-13N BETWEEN 106W-109W. 

TROPICAL WAVE FROM 5N-13N ALONG 123W. SCATTERED MODERATE TO TO 
STRONG CONVECTION IS MAINLY ALONG THE ITCZ.  

...ITCZ...
AXIS IS ALONG 5N77W 7N110W 9N125W 7N140W. SCATTERED MODERATE TO 
STRONG CONVECTION WITHIN 120 NM EITHER SIDE OF AXIS FROM 
89W-97W. NUMEROUS MODERATE TO STRONG CONVECTION FROM 05N-13N 
BETWEEN 107W-114W. SCATTERED MODERATE TO STRONG CONVECTION 
WITHIN 60 NM EITHER SIDE OF AXIS FROM 122W-124W.

...DISCUSSION...
AN UPPER LEVEL CYCLONIC CIRCULATION IS CENTERED NEAR 21N131W 
WITH TROUGH FROM THE CIRCULATION SW TO 9N133W. SOME HIGH LEVEL 
MOISTURE IS ROTATING AROUND THE CYCLONIC CIRCULATION...OTHERWISE 
MODERATE TO STRONG SUBSIDENCE WITH DRY STABLE AIR IS N OF THE 
ITCZ W OF 125W. A LARGE UPPER LEVEL ANTICYCLONIC CIRCULATION 
REMAINS CENTERED OVER NORTHERN MEXICO ALONG THE BORDER OF MEXICO 
AND SW TEXAS NEAR 31N106W WITH A RIDGE EXTENDING WSW TO 26N125W. 
ANOTHER UPPER-LEVEL ANTICYCLONIC CIRCULATION IS NOTED OVER 
SOUTHERN MEXICO ALONG THE COAST OF THE BAY OF CAMPECHE NEAR 
18N95W SUPPORTING CONVECTION OVER SOUTHERN MEXICO S TO HONDURAS. 
UPPER LEVEL DIFFLUENT FLOW SW OF A CYCLONIC CIRCULATION CENTERED 
NEAR 13N104W IS SUPPORTING A LARGE AREA OF MODERATE TO STRONG 
CONVECTION S OF THE ITCZ AND A TROPICAL WAVE FROM 5N-9N BETWEEN 
106W AND 109W.

THE REMNANT LOW OF BLANCA...1008 MB..IS NEAR 22N122W MOVING WNW 
10 KT. SCATTERED SHOWERS ARE WITHIN 90 NM OF THE LOW. WINDS IN 
THE 20-25 KT REMAIN WITH THE LOW MAINLY OVER THE N SEMICIRCLE.

LARGE SWELLS FROM THE SOUTHERN HEMISPHERE ARE SUBSIDING AND ARE 
EXPECTED TO BE BELOW 8 FT LATER TODAY.

$$
DGS