000
AXPZ20 KNHC 080913
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC TUE APR 08 2008

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 
0845 UTC.

...ITCZ...

ITCZ AXIS IS CENTERED ALONG 7N77W 8N81W 2N98W 7N111W 2N140W. 
SCATTERED MODERATE CONVECTION FROM 6N-8N BETWEEN 78W-83W. 
SCATTERED MODERATE WITHIN 75 NM OF LINE 11N105W 5N121W. 
SCATTERED MODERATE FROM 3N-5N BETWEEN 126W-131W.

...DISCUSSION...

W OF 110W...
SURFACE RIDGE AXIS EXTENDS ACROSS THE REGION OFF THE BAJA 
CALIFORNIA COAST FROM 30N130W TO 17N110W AND IS PRODUCING FRESH 
TRADES OVER THE TROPICAL BELT W OF 125W...AND FRESH TO STRONG 
WINDS WITH BUILDING NW SWELLS OFF THE BAJA COAST. IN THE UPPER 
LEVELS...A STRONG REX BLOCK IS LOCATED N OF HAWAII ALONG 157W 
WITH THE DOWNSTREAM FLOW CONVERGING E OF 135W AS A DIGGING 
TROUGH W OF CALIFORNIA MEETS BROAD SOUTHWESTERLY FLOW 
ORIGINATING FROM THE TROPICS. ABUNDANT MOISTURE IS ASSOCIATED 
WITH THE SOUTHWESTERLY FLOW AND WIDESPREAD HIGH CLOUDS ARE 
STREAMING NE TOWARDS THE BAJA PENINSULA BUT MAINLY W OF 120W. A 
CYCLONIC SHEAR AXIS LIES ACROSS THE FAR NW PART OF THE AREA FROM 
30N138W TO 29N140W AND THE SUBTROPICAL JET EXTENDS FROM 20N140W 
TO 30N120W...WITH UPPER LEVEL WINDS REACHING 90-100 KT OVER 
SOUTHERN ARIZONA AND NEW MEXICO. FARTHER S...A STRONG UPPER HIGH 
NEAR 13N111W IS PRODUCING MODERATE/STRONG SUBSIDENCE S OF 20N E 
OF 120W.

E OF 110W...
VERY LIGHT SURFACE WINDS ARE IN CONTROL E OF 110W WITH A BROKEN 
ITCZ AXIS EXTENDING FROM PANAMA/COSTA RICA TO 4N100W THEN 
REFORMING FARTHER N FROM 12N103W TO 8N110W ON THE PERIPHERY OF 
THE SUBTROPICAL RIDGE. THE MAIN UPPER LEVEL FEATURES ARE AN 
UPPER TROUGH EXTENDING FROM EL SALVADOR TO 8N104W AND AN UPPER 
RIDGE ALONG 14N W OF 100W...BOTH OF WHICH ARE PRODUCING 
MODERATE/STRONG SUBSIDENCE OVER THE AREA. LAND BREEZE 
CIRCULATIONS ARE PRODUCING ISOLATED SHOWERS/TSTMS WITHIN ABOUT 
60 NM OF THE CENTRAL AMERICAN COAST BETWEEN PANAMA AND 
GUATEMALA...EXCEPT SCATTERED MODERATE NEAR THE AZUERO PENINSULA 
OF PANAMA WHERE THE ITCZ IS INFLECTED NWD. ALSO...A COMPLEX OF 
TSTMS IS PRODUCING SCATTERED MODERATE CONVECTION OVER ERN 
GUATEMALA WHICH IS PLUNGING SWD...AND MAY REACH EL SALVADOR AND 
THE COAST LATER THIS MORNING.
  
$$
BERG