000
AXPZ20 KNHC 070919
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC MON JUN 07 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 N OF 3N ALONG 85W MOVING W 10 KT. SCATTERED 
MODERATE TO STRONG CONVECTION WITHIN 160 NM OF THE COAST OF 
COSTA RICA.

...ITCZ...
AXIS IS ALONG 7N78W 11N100W 6N110W 9N125W TO 6N140W. NUMEROUS 
STRONG CONVECTION FROM 3N-7N E OF 81W. SCATTERED MODERATE TO 
STRONG CONVECTION WITHIN 120 NM N OF AXIS FROM 84W-95W AND 
WITHIN 90 NM N OF AXIS FROM 125W-128W.

...DISCUSSION...
A NE TO SW ORIENTED UPPER LEVEL RIDGE OVER THE FAR NW PORTION OF 
THE DISCUSSION AREA EXTENDS FROM 32N132W TO 30N140W. HIGH LEVEL
MOISTURE IS NW OF THE RIDGE AXIS WITH MODERATE TO STRONG 
SUBSIDENCE WITH DRY AIR AT THE MIDDLE AND UPPER LEVELS IS WITHIN 
500 NM SE OF THE AXIS. AN UPPER LEVEL CYCLONIC CIRCULATION IS 
CENTERED NEAR 28N123W WITH AN UPPER TROUGH EXTENDING FROM THE 
CYCLONIC CIRCULATION TO 20N132W 21N140W. AN UPPER LEVEL 
ANTICYCLONIC CIRCULATION IS CENTERED OVER SOUTHERN NEW MEXICO 
WITH A RIDGE AXIS EXTENDING SW ACROSS THE CENTRAL GULF OF 
CALIFORNIA.

A BROAD UPPER LEVEL RIDGE DOMINATES THE DEEP TROPICS WITH AN 
ANTICYCLONIC CIRCULATION CENTERED NEAR 14N135W AND A RIDGE 
EXTENDING EASTWARD THROUGH ANOTHER ANTICYCLONIC CIRCULATION NEAR 
13N103W AND CONTINUING NE TO A THIRD ANTICYCLONIC CIRCULATION 
OVER THE YUCATAN CHANNEL. ABUNDANT DEEP LAYERED TROPICAL 
MOISTURE IS IN PLACE S OF THE RIDGE.

WEAK COLD FRONT ENTERS THE AREA AT 32N125W 30N135W THEN 
STATIONARY FRONT TO 31N140W. NO SIGNIFICANT WEATHER ASSOCIATED 
WITH THE FRONT. OTHERWISE SURFACE RIDGE COVERS THE AREA N OF 15N 
W OF 110W. TRADES TO 20 KT ALONG THE SOUTHERN PERIPHERY OF THE 
RIDGE ARE FROM 14N-20N W OF 135W. A COUPLE OF TROUGH ARE 
ANALYZED ALONG THE ITCZ THE FIRST EXTENDS FROM 14N101W TO 
7N107W. A FEW SHOWERS ARE ALONG THE TROUGH. ANOTHER TROUGH FROM
12N129W TO 5N132W. EARLIER CONVECTION ASSOCIATED WITH THE TROUGH 
HAS DISSIPATED. 

$$
DGS