000
AXPZ20 KNHC 030915
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC THU JUN 03 2010

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 WAVE...
TROPICAL WAVE FROM NORTHERN PANAMA TO 7N82 THEN CONTINUING INTO 
THE SW CARIBBEAN. NO SIGNIFICANT CONVECTION WITH THE WAVE.

...ITCZ...
AXIS IS ALONG 9N85W 7N105W 8N115W 6N140W. SCATTERED/NUMEROUS 
MODERATE/STRONG CONVECTION WITHIN 150 NM N OF AXIS FROM 85W-89W 
AND WITHIN 120 NM S OF AXIS FROM 89W-92W. SCATTERED MODERATE TO 
STRONG CONVECTION WITHIN 100 NM S OF AXIS FROM 135W TO 139W.

...DISCUSSION...
AN UPPER LEVEL ANTICYCLONIC CIRCULATION OVER THE FAR NW PORTION 
OF THE DISCUSSION AREA CENTERED NEAR 29N135W WITH RIDGE FROM THE 
ANTICYCLONIC CIRCULATION E TO NORTHERN BAJA CALIFORNIA. S OF THE 
RIDGE AN UPPER LEVEL TROUGH TROUGH EXTENDS FROM THE BIG BEND OF
TEXAS ACROSS NORTHERN MEXICO THROUGH THE SOUTHERN TIP OF BAJA 
CALIFORNIA TO 23N128W. MODERATE TO STRONG SUBSIDENCE WITH DRY 
AIR AT THE MIDDLE AND UPPER LEVELS COVERS THE AREA FROM 15N-20N
W OF 110W. 

IN THE DEEP TROPICS AN UPPER LEVEL ANTICYCLONIC CIRCULATION IS 
CENTERED NEAR 12N109W. UPPER LEVEL DIFFLUENT FLOW SW OF THE 
ANTICYCLONE IS ENHANCING CONVECTION ALONG THE A SURFACE TROUGH. 
A RIDGE EXTENDS FROM THE ANTICYCLONIC CIRCULATION TO ANOTHER 
ANTICYCLONIC CIRCULATION CENTERED OVER NORTHERN HONDURAS.  
STRONG CONVECTION HAS DEVELOPED OFF THE COAST OF COSTA RICA.

A 1022 MB HIGH PRES IS JUST W OF THE DISCUSSION AREA CENTERED 
NEAR 28N141W WITH SURFACE RIDGE COVERING THE AREA N OF 15N W OF 
115W. THE RIDGE HAS WEAKENED AS COMPARED TO THE PAST SEVERAL 
DAYS AS A RESULT THERE IS ONLY A SMALL AREA OF NE 20 KT TRADES 
FROM 8N TO 15N W OF 135W AND ARE EXPECTED DROP BELOW 20 KT 
WITHIN 24 HOURS. A SURFACE TROUGH EXTENDS FROM 13N119W TO 
7N121W. THE LOW THAT WAS PREVIOUSLY ALONG THE TROUGH HAS 
DISSIPATED. SCATTERED MODERATE TO STRONG FROM 8N-12N BETWEEN
117W-123W.

$$
DGS