000
AXPZ20 KNHC 240954
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC WED MAR 24 2010

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 05N77W TO 03N84W TO 06N90W TO 05N100W TO 07N117W TO 
03N140W.  SCATTERED MODERATE TO STRONG CONVECTION WITHIN 120 NM 
OF AXIS FROM 84W-116W AND WITHIN 180 NM OF AXIS W OF 130W.

...DISCUSSION...
LARGE AMPLITUDE UPPER LEVEL TROUGH EXTENDS FROM 32N111W TO 
07N128W HAS VERY DRY AIR MASS ALONG 10 DEG W OF AXIS.  UPSTREAM 
RIDGE CREST NOW ENTERING BASIN ACROSS 140W BRINGS ONLY MOISTURE 
AVAILABLE RIDING ON 125 KT JET CORE N OF 20N W OF 123W.  ON E 
SIDE OF TROUGH...125 KT SW JET BRING PLENTY OF TROPICAL MOISTURE 
ACROSS CENTRAL MEXICO INTO NW GULF OF MEXICO WHERE INDICATIONS 
OF FRONTOGENESIS OVER TEXAS MIGHT USE IT FOR SIGNIFICANT 
RAINFALL EVENT.

STATIONARY MID TO UPPER LEVEL ANTICYCLONE AT 13N92W MAINTAINS 
VERY DRY SUBSIDING AIR MASS OVER SOUTHERN MEXICO AND REMAINDER 
OF CENTRAL AMERICA AND NORTHERN PORTIONS OF SOUTH AMERICA.    

AT THE SURFACE...HIGH PRES 1025 MB CENTERED AT 29N135W KEEP 
FRESH NE TRADES FROM 05N TO 20N W OF 125W.  HIGH PRES WEAKENS 
AND DISSIPATES TONIGHT DIMINISHING THE COVERAGE TRADES AREA.
SIMILARLY...SMALL AREA OF FRESH NW BREEZE ALONG W COAST OF BAJA 
CALIFORNIA DIMINISHES WITH WEAKENING RIDGE EASES PRES GRADIENT 
WITH TROUGH INLAND SOUTHERN CALIFORNIA. .  

GAP WINDS...
GULF OF PAPAGAYO E-NE FRESH TO STRONG BREEZE CONTINUE AS STRONG 
WINDS REMAIN IN PLACE OVER WESTERN CARIBBEAN.  GULF OF PANAMA N 
FRESH BREEZE EXPECTED TO DIMINISH TONIGHT AS CARIBBEAN WINDS 
VEER MORE TO THE EAST. 

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

$$
WALLY BARNES