000
AXPZ20 KNHC 241553
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC SAT APR 24 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.

...ITCZ...
AXIS ALONG AXIS ALONG 05N77W TO 07N91W TO 05N106W TO 06N114W TO 
04N128W TO 05.5N140W. NUMEROUS STRONG CONVECTION WITHIN 120 NM 
EITHER SIDE OF AXIS E OF 82W. NUMEROUS MODERATE SCATTERED STRONG 
CONVECTION WITHIN 180 NM N OF AXIS BETWEEN 82W AND 88W. 
SCATTERED MODERATE ISOLATED STRONG CONVECTION WITHIN 150 NM N OF 
AXIS AND 120 NM S OF AXIS BETWEEN 88W AND 96W. SCATTERED 
MODERATE ISOLATED STRONG CONVECTION WITHIN 300 NM S OF AXIS 
BETWEEN 113N AND 118W. SCATTERED MODERATE ISOLATED STRONG 
CONVECTION WITHIN 150 NM EITHER SIDE OF AXIS W OF 130W.  

...DISCUSSION...
IN THE UPPER LEVELS N OF 20N ANTICYCLONIC FLOW PREVAILS OVER THE 
WESTERN TWO THIRDS OF THE AREA...WITH A TROUGH OVER THE EASTERN 
THIRD WITH AXIS ALONG 110W. IN THE DEEP TROPICS...ANTICYCLONIC 
FLOW PREVAILS W OF 115W AND E OF 108W. 

AT THE SURFACE...A LARGE AREA OF LOWER PRESSURE PREVAILS E OF 
86W...WITH ENHANCED ITCZ CONVECTION. THE STRONGEST ACTIVITY IS E 
OF 83W. STRONG SW WINDS WERE NOTED COMING INTO SE CORNER OF 
BASIN...DUE TO THE LOWER PRESSURES ASSOCIATED WITH THE ACTIVE 
CONVECTION. 

ELSEWHERE AT THE SURFACE...
STRONG HIGH PRES CENTER 1031 MB CENTERED NEAR 36N135W WILL SHIFT 
E AND WEAKEN OVER THE NEXT 48 HOURS. THIS WILL DECREASE THE 
COVERAGE OF 20 KT TRADES CURRENTLY ACROSS THE AREA FROM 05N TO 
22N W OF 120W. 

$$
AL