000
AXPZ20 KNHC 031019
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC TUE MAR 03 2009

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 
0900 UTC.

...ITCZ...
AXIS ALONG 04N77W TO 02N95W TO 01N128W TO 02N140W.
NO SIGNIFICANT CONVECTION.

...DISCUSSION...
STRONG DEEP LAYER TROUGH DROP FROM CYCLONIC VORTEX AT 45N131W 
OVER NW PART OF AREA FROM 32N135W TO 15N140W.  SERIES OF QUICK 
SHORTWAVE TROUGHS ROTATE AROUND BASE OF VORTEX BRINGING SURFACE 
TROUGHS OVER BASIN NW CORNER THEN SHIFT NE OUT OF AREA THROUGH 
THU.  BROAD STURDY RIDGE ALONG 107W MAINTAINS AREA E OF 120W 
VERY DRY AIR MASS DUE TO MODERATE TO STRONG SUBSIDENCE... 
INCLUDING ENTIRE LENGTH OF ITCZ.  

SURFACE HIGH PRES 1036 MB W OF AREA PUSHING LARGE LONG PERIOD 
SWELLS ACROSS W HALF OF E PAC SPREADING S TO THE EQUATOR. 
STATIONARY FRONT ASSOCIATED WITH SURFACE TROUGH ALONG LINE 
THROUGH 32N127W TO 20N135W. 

GALE FORCE WINDS IN GULF OF TEHUANTEPEC DIMINISH EARLY TODAY AS 
HIGH PRES OVER GULF OF MEXICO DRIFTS E.

STRONG NORTHEASTERLY WINDS OVER GULFS OF PAPAGAYO AND FONSECA 
CONTINUE THROUGH TUE FORCED BY STRONG NE FLOW CAUSED BY HEALTHY 
COLD FRONT ACROSS NW CARIBBEAN.

STRONG NORTHERLY WINDS IN GULF OF PANAMA CONTINUE THROUGH 
FORECAST PERIOD AS STRONG UNSEASONAL COLD FRONT CROSSES NW 
CARIBBEAN.

$$
WALLY BARNES