000
AXPZ20 KNHC 291019 CCA
TWDEP 

TROPICAL WEATHER DISCUSSION...COR    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC FRI JUN 29 2007

CORRECTING SOME EXTRANEOUS INFORMATION ABOUT SHOWERS AND
THUNDERSTORMS AND THE ITCZ

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 0930 UTC.

...TROPICAL WAVES...
A TROPICAL WAVE IS ALONG 88W THROUGH WESTERN HONDURAS AND 
EASTERN EL SALVADOR INTO THE EASTERN PACIFIC OCEAN MOVING
WEST 10 TO 15 KT. SCATTERED MODERATE TO STRONG SHOWERS AND 
THUNDERSTORMS ARE FROM 8N TO 10N BETWEEN 90W AND 92W.

A TROPICAL WAVE IS ALONG 102W/103W FROM CENTRAL MEXICO INTO
THE EASTERN PACIFIC OCEAN MOVING WEST 10 TO 15 KT. SCATTERED 
MODERATE TO STRONG SHOWERS AND THUNDERSTORMS FROM 15N TO THE 
MEXICO COAST BETWEEN 98W AND 100W.

A TROPICAL WAVE IS ALONG 118W/119W SOUTH OF 22N MOVING WEST
10 TO 15 KT. A 1010 MB LOW PRESSURE CENTER IS ALONG THE WAVE. 
SCATTERED MODERATE TO STRONG SHOWERS AND THUNDERSTORMS FROM 9N 
TO 11N BETWEEN 119W AND 121W.

A TROPICAL WAVE IS ALONG 135W/136W SOUTH OF 17N MOVING WEST
10 TO 15 KT. SCATTERED MODERATE TO STRONG SHOWERS AND
THUNDERSTORMS FROM 7N TO 9N BETWEEN 137W AND 139W.

...ITCZ...
INTERTROPICAL CONVERGENCE ZONE...8N78W 10N87W 10N101W 16N117W 
10N130W 8N140W. NUMEROUS STRONG SHOWERS AND THUNDERSTORMS 
FROM 3N TO 10N BETWEEN 77W AND 80W ALONG THE COASTS AND
IN THE COASTAL WATERS OF COLOMBIA AND PANAMA. WIDELY SCATTERED 
TO SCATTERED MODERATE/ISOLATED STRONG FROM 7N TO 12N BETWEEN
90W AND 110W. SCATTERED MODERATE TO STRONG FROM 9N TO 11N 
BETWEEN 119W AND 121W...FROM 8N TO 10N BETWEEN 131W AND 132W...
AND FROM 7N TO 9N BETWEEN 137W AND 139W.

...DISCUSSION...
A MIDDLE TO UPPER LEVEL TROUGH STARTS FROM A CYCLONIC 
CIRCULATION CENTER NEAR 30N105W ALONG THE NORTHERN MEXICO/
WEST TEXAS BORDER JUST WEST OF THE TEXAS BIG BEND TO 28N109W
TO 22N111W. UPPER LEVEL ANTICYCLONIC CIRCULATION CENTER NEAR 
31N121W. MIDDLE TO UPPER LEVEL DRY AIR/SUBSIDENCE COVERS THE 
AREA FROM 20N BEYOND 32N BETWEEN 114W AND 140W. A MIDDLE TO 
UPPER LEVEL CYCLONIC CIRCULATION CENTER IS GAINING MORE 
ORGANIZATION NEAR 22N144W. CYCLONIC FLOW FROM A DEEP LAYER 
TROUGH COVERS THE AREA NORTH OF 32N AND THE ANTICYCLONIC FLOW 
AROUND THE 31N121W ANTICYCLONIC CENTER. A MIDDLE TO UPPER LEVEL 
TROUGH EXTENDS FROM THE SOUTHWESTERN GULF OF MEXICO...ACROSS
THE ISTHMUS OF TEHUANTEPEC INTO THE EASTERN PACIFIC OCEAN
NEAR 11N94W.

$$
MT