000
AXPZ20 KNHC 272122
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC SAT FEB 27 2010

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 
2100 UTC.

...ITCZ...

AXIS IS ALONG 05N77W TO 04N82W TO 06.5N94.5W TO 03N108W TO 
05N121W TO 03.5N129W TO 04N140W. SCATTERED MODERATE ISOLATED 
STRONG CONVECTION WITHIN 180 NM N AND 120 NM S OF AXIS BETWEEN 
83W AND 89W. SCATTERED MODERATE ISOLATED STRONG CONVECTION 
WITHIN 120 NM S OF AXIS BETWEEN 103W AND 107W. SCATTERED 
MODERATE ISOLATED STRONG CONVECTION WITHIN 120 NM N OF AXIS 
BETWEEN 112W AND 120W. 


...DISCUSSION...

A MIDDLE/UPPER TROUGH COVERS THE PACIFIC WATERS N OF 25N E OF 
128W WITH THE AXIS ALONG 118W. FLOW ALOFT IS BECOMING 
INCREASINGLY ANTICYCLONIC OVER THE NW PART OF THE DISCUSSION 
AREA WITH WATER VAPOR IMAGERY INDICATING STRONG SUBSIDENCE. THE 
SUBTROPICAL JET CONTINUES ACROSS THE FORECAST AREA EXTENDING 
FROM 08N140W THEN TURNING ANTICYCLONICALLY TO SOUTHERN MEXICO 
BASED ON SATELLITE DERIVED WINDS. DENSE CIRRUS LIES ALONG AND UP 
TO 6 TO 7 DEGREES S OF THE JET AXIS. 

AT THE SURFACE TRADES WINDS IN THE 20 TO 25 KT RANGE ARE LOCATED 
FROM 06N TO 18N W OF 125W BASED ON LATEST WINDSAT AND ASCAT 
PASSES. SEAS FROM 8 TO 11 FT IN MIXED NE AND NW SWELL PREVAILS 
IN THIS AREA. NW SWELLS WITH SEAS TO 23 FT PREVAIL ACROSS THE NW 
PART OF THE FORECAST AREA. THESE SWELLS WILL CONTINUE TO 
PROPAGATE ACROSS THE AREA THROUGH THE FORECAST PERIOD. 

GAP WINDS 
GALE FORCE WINDS ARE CURRENTLY AFFECTING THE GULF OF 
TEHUANTEPEC. WINDS ARE EXPECTED TO FALL BELOW GALE FORCE SUN 
AFTERNOON AS WINDS VEER OVER THE GULF OF MEXICO AND WINDS 
FUNNELING INTO THE GULF OF TEHUANTEPEC DECREASE. 

AS THE COLD FRONT IN THE W CARIBBEAN CONTINUES S...WINDS IN THE 
GULF OF PAPAGAYO WILL INCREASE ABOVE 20 KT SUN MORNING. 

FOR ADDITIONAL INFORMATION PLEASE VISIT 
HTTP://WWW.HURRICANES.GOV/MARINE

$$
AL