000
AXPZ20 KNHC 131529
TWDEP 

TROPICAL WEATHER DISCUSSION      
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC FRI JUL 13 2007

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

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC.

...TROPICAL WAVES...
TROPICAL WAVE N OF 5N ALONG 86W MOVING W 10-15 KT. SCATTERED 
MODERATE TO STRONG OVER HONDURAS AND NICARAGUA.

TROPICAL WAVE N OF 4N ALONG 97W MOVING W AT 10 KT. SCATTERED 
MODERATE ISOLATED STRONG CONVECTION FROM 10N-15N WITHIN 150
NM E OF WAVE AXIS. 

TROPICAL WAVE FROM 5N-22N ALONG 110W/111W MOVING W 10 KT. A 1009 
MB LOW PRES IS ALONG THE WAVE NEAR 13N111W. SCATTERED MODERATE 
TO STRONG CONVECTION FROM 12N-15N FROM 109W-112W.

...ITCZ...
ITCZ AXIS IS CENTERED ALONG 9N86W 8N95W 16N107W 11N115W 12N120W 
10N140W. SCATTERED TO NUMEROUS MODERATE TO STRONG CONVECTION 
WITHIN 180 NM S OF AXIS FROM 109W TO 112W. SCATTERED MODERATE TO 
STRONG CONVECTION WITHIN 120 NM S OF AXIS FROM 114W TO 121W AND 
WITHIN 90 NM EITHER SIDE OF AXIS FROM 123W TO 135W.

...DISCUSSION...
BROAD UPPER LEVEL TROUGH WITH AXIS FROM 32N129W TO 20N120W TO 
18N136W. MODERATE TO STRONG SUBSIDENCE/DRY AIR ALOFT IS FROM THE 
ITCZ TO 23N W OF 125W. AN UPPER LEVEL CYCLONIC CIRCULATION IS
NEAR 20N122W. UPPER LEVEL ANTICYCLONIC CIRCULATION IS ALONG
THE MEXICO/ARIZONA BORDER NEAR NOGALES. ANTICYCLONIC FLOW COVERS
THE AREA N OF 20N E OF 120W. A WEAK UPPER LEVEL INVERTED TROUGH 
EXTENDS FROM THE CENTRAL MEXICO NEAR 21N99W TO 10N96W.

A 1010 MB LOW IS ANALYZED ALONG THE ITCZ NEAR 11N122W WHICH 
HELPING TO ENHANCE ITCZ CONVECTION IN THE AREA. SURFACE TROUGH
THE REMNANTS OF TROPICAL DEPRESSION FOUR-E EXTENDS FROM 28N128W 
TO 20N129W. A 1018 MB HIGH PRES IS CENTERED NEAR 29N125W WITH 
RIDGE FROM THE HIGH TO 22N113W.

$$
DGS