000
AXPZ20 KNHC 122141
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC SAT APR 12 2008

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. 

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2115 UTC.

...ITCZ...

ITCZ AXIS IS CENTERED ALONG 6N78W 4N90W 5N105W 3N120W 5N140W. 
SCATTERED MODERATE ISOLATED STRONG CONVECTION IS LOCATED FROM 5N 
TO 9N BETWEEN 84W AND 89W AND WITHIN 60 NM EITHER SIDE OF A 
5N90W 3N94W LINE. SCATTERED MODERATE CONVECTION IS LOCATED 
WITHIN A 90 NM RADIUS OF 3N105W.

...DISCUSSION...

W OF 105W...
A LARGE MIDDLE/UPPER LEVEL CYCLONIC CIRCULATION IS CENTERED NEAR 
23N123W AND IS NEARLY STATIONARY. A TROUGH AXIS EXTENDS SW FROM 
THE CIRCULATION CENTER TO 12N138W. WATER VAPOR SATELLITE IMAGERY 
INDICATES STRONG SUBSIDENCE COVERING THE AREA ABOUT 8 DEGREES 
EITHER SIDE OF THE TROUGH AXIS. THE FLOW ALOFT OVER THE NW PART 
OF THE DISCUSSION AREA IS BECOMING INCREASINGLY ANTICYCLONIC N 
OF ABOUT 25N W OF 125W. A JET ORIGINATES IN THE TROPICS NEAR 
10N135W AND CONTINUES THROUGH 13N120W TO THE MEXICAN COAST NEAR 
22N. SATELLITE CLOUD DRIFT WINDS INDICATE THE HIGHEST SPEEDS E 
OF 120W AND MEASURE 60 TO 70 KNOTS. AT THE SURFACE MODERATE 
TRADE WINDS ARE LOCATED FROM 7N TO 18N W OF 125W WITH SEAS TO 8 
FT. THESE CONDITIONS WILL CONTINUE THROUGH 48 HOURS.

E OF 105W...
LIGHT WINDS ALOFT COVER THIS AREA AND ARE MOSTLY EASTERLY TO 
SOUTHEASTERLY. A GALE WARNING IS FORECAST OVER THE GULF OF 
TEHUANTEPEC IN 36 HOURS WITH N TO NE WINDS 30 TO 40 KT AND SEAS 
9 TO 13 FT.

$$
CAB