000
AXPZ20 KNHC 091602
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC WED JUN 09 2010

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 ALONG 79W TO THE SOUTH OF 10N DRIFTING WESTWARD.
SCATTERED STRONG SHOWERS AND THUNDERSTORMS ARE FROM 4N TO 6N 
BETWEEN 79W AND 81W. 

TROPICAL WAVE ALONG 13N91W 10N93W 7N94W DRIFTING WESTWARD.
SCATTERED MODERATE SHOWERS TO ISOLATED STRONG THUNDERSTORMS
ARE FROM 12N TO 15N BETWEEN 99W AND 103W.

...ITCZ...

INTERTROPICAL CONVERGENCE ZONE...05N77W 09N94W 9N110W 07N122W 
10N134W BEYOND 08N140W. ISOLATED MODERATE SHOWERS AND LOCALLY 
STRONG THUNDERSTORMS ARE WITHIN 120 NM ON EITHER SIDE OF 8N105W
7N121W...WITHIN 180 NM TO 240 NM ON EITHER SIDE OF 7N121W 
10N135W 10N140W. THE CLOUD TOP TEMPERATURES ARE WARMING AS 
PRECIPITATION DISSIPATES IN CONVECTIVE DEBRIS CLOUDS THAT COVER 
THE AREA FROM 2N TO 6N BETWEEN 79W AND 85W...FROM 2N TO 5N 
BETWEEN 87W AND 95W...AND FROM 6N TO 12N BETWEEN 94W AND 100W.

...DISCUSSION...
A COLD FRONT APPROACHES THE FAR NORTHWESTERN CORNER OF THE 
AREA...PASSING THROUGH 32N135W BEYOND 30N140W. SHOWERS ARE 
POSSIBLE WITH THIS FRONT.

A MIDDLE LEVEL TO UPPER LEVEL TROUGH EXTENDS FROM 31N114W
IN NORTHWESTERN MEXICO TO 27N124W TO A CYCLONIC CIRCULATION
CENTER THAT IS NEAR 21N133W BEYOND 13N140W. DRY AIR IN
SUBSIDENCE SURROUNDS THIS FEATURE...WITH NO ASSOCIATED 
CONVECTIVE PRECIPITATION. UPPER LEVEL MOISTURE IS RACING
NORTHEASTWARD ALONG THE EASTERN SIDE OF THE ASSOCIATED
CYCLONIC FLOW.

BROAD MIDDLE LEVEL TO UPPER LEVEL CYCLONIC FLOW COVERS THE AREA 
FROM 10N TO THE SOUTHWESTERN GULF OF MEXICO NEAR 20N BETWEEN
90W AND 110W.

ONE SURFACE TROUGH IS ALONG 12N105W 6N109W MOVING WESTWARD
10 KT. ISOLATED MODERATE SHOWERS TO LOCALLY STRONG
THUNDERSTORMS ARE FROM 6N TO 10N BETWEEN 105W AND 110W.

A SECOND SURFACE TROUGH IS ALONG 13N133W 6N135W MOVING WESTWARD 
10 KT. STRONG SHOWERS AND THUNDERSTORMS FROM 10N TO 11N BETWEEN 
135W AND 136W. SCATTERED MODERATE SHOWERS TO ISOLATED STRONG 
THUNDERSTORMS ARE WITHIN 30 NM ON EITHER SIDE OF 9N137W 7N140W. 
ISOLATED MODERATE SHOWERS ARE WITHIN 30 NM ON EITHER SIDE OF 
10N124W 12N127W 13N130W 12N132W.

A SURFACE RIDGE IS ALONG 16N114W 23N126W 29N131W BEYOND 29N140W.
TRADEWINDS REACHING 20 KT ARE ALONG THE SOUTHERN PERIPHERY OF 
THE RIDGE TO THE NORTH OF 10N TO THE WEST OF 132W. 

$$
MT