000
AXPZ20 KNHC 221520
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC MON MAR 22 2010

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 
1500 UTC.

...ITCZ...
AXIS ALONG 07N77W TO 06N91W TO 03.5N100W TO 05N115W TO 04N127W 
TO 01N140W. SCATTERED MODERATE ISOLATED STRONG CONVECTION WITHIN 
180 NM OF AXIS E OF 121W.

...DISCUSSION...
A UPPER LEVEL TROUGH N OF 15N WITH AXIS ALONG 30N130W TO 
15N133W. SW FLOW E OF THE TROUGH AXIS IS ADVECTING ABUNDANT MID 
AND UPPER LEVEL MOISTURE ACROSS THE BAJA PENINSULA OVER MEXICO. 
IN THE DEEP TROPICS...ACTIVE ITCZ CONVECTION E OF 121W IS 
HELPING MAINTAIN UPPER LEVEL RIDGE ALONG 10N E OF 125W. 

AT THE SURFACE
STRONGER HIGH PRES 1029 MB FROM THE PAST SEVERAL DAYS CENTERED 
NEAR 36N137W IS MAINTAINING A LARGER AREA AREA OF FRESH TO 
STRONG TRADES FROM 02N TO 20N W OF 124W. THE AREAL COVERAGE OF 
TRADES GREATER THAN 20 KT WILL DECREASE AS THIS HIGH PRESSURE 
CENTER WEAKENS OVER THE NEXT COUPLE OF DAYS.  

GAP WINDS
GULF OF TEHUANTEPEC GALE FORCE WINDS CONTINUE. AS HIGH PRESSURE 
SHIFTS FURTHER E ON THE GULF OF MEXICO OVER THE NEXT 24 
HOURS...WINDS WILL VEER WHICH WILL DIMINISH THE FLOW THROUGH THE 
ISTHMUS. AS A RESULT...GALE FORCE WINDS SHOULD DIMINISH EARLY 
TUE...AND TO BELOW 20 KT BY LATE TUE. 

AS THE SAME COLD AIR MASS REACHES NW CARIBBEAN SEA...GULF OF 
PAPAGAYO GAP WINDS SHOULD INCREASE TO STRONG TO NEAR GALE FORCE 
TUE.  

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

$$
AL