000
AXPZ20 KNHC 011517
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC SUN MAR 01 2009

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 
1445 UTC.

...ITCZ...

ITCZ AXIS ALONG 04N77W TO 03N100W TO 02N120W TO 03N140W. 
SCATTERED MODERATE ISOLATED STRONG CONVECTION IS LOCATED WITHIN 
30 NM EITHER SIDE OF A LINE FROM 05N84W TO 04N90W.

...DISCUSSION...

W OF 105W...
A LARGE MIDDLE/UPPER LEVEL TROUGH OVER THE N PACIFIC EXTENDS 
SOUTHWARD TO 20N W OF ABOUT 132W WITH THE AXIS LOCATED W OF THE 
DISCUSSION AREA. THE ASSOCIATED COLD FRONT IS LOCATED THROUGH 
32N127W TO 19N135W WITH SCATTERED SHOWERS AND ISOLATED 
THUNDERSTORMS LOCATED WITHIN 120 NM EITHER SIDE OF THE FRONT N 
OF 25N. SEAS ARE AS HIGH AS 18 FEET W OF THE FRONT N OF 25N. A 
STRONG SOUTHWESTERLY JET IS LOCATED THROUGH 20N140W TO 25N134W 
TO BEYOND 32N130W. SATELLITE CLOUD DRIFT WINDS ALONG THE JET ARE 
MEASURING IN THE 100 TO 110 KNOT RANGE. THE SOUTHWESTERLY FLOW 
ALOFT EXTENDS 8 TO 10 DEGREES E OF THE JET AXIS. MOST OF THE 
REMAINDER OF THE AREA W OF 105W IS DOMINATED BY A MIDDLE/UPPER 
LEVEL RIDGE WITH THE AXIS LOCATED ALONG 112W N OF ABOUT 10N. 
WATER VAPOR IMAGERY INDICATES STRONG SUBSIDENCE ASSOCIATED WITH 
THIS FEATURE. THE RIDGE WILL MOVE SLOWLY E OVER THE NEXT 48 
HOURS. MODERATE WESTERLY FLOW ALOFT COVERS THE DEEP TROPICS S OF 
ABOUT 10N TO THE EQUATOR. 

E OF 105W...
STRONG SUBSIDENCE AND MODERATE WESTERLY FLOW ALOFT COVERS THE 
AREA E OF 105W. A STORM WARNING IS LOCATED OVER THE GULF OF 
TEHUANTEPEC WITH SEAS 12 TO 16 FEET. 

$$
CAB