000
AXPZ20 KNHC 291515
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC MON MAR 29 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 IS ALONG 2N78W 6N90W 3N105W 6N130W 4N140W. SCATTERED 
MODERATE TO STRONG CONVECTION WITHIN 150 NM S OF AXIS FROM
93W-98W. SCATTERED MODERATE ISOLATED STRONG CONVECTION WITHIN 60 
NM S OF AXIS FROM 127W-129W.

...DISCUSSION...
UPPER LEVEL TROUGH EXTENDS FROM NORTHERN MEXICO NEAR 30N105W
ACROSS CENTRAL BAJA CALIFORNIA TO 25N130W. MODERATE TO STRONG
SUBSIDENCE IS WITHIN 240 NM SE OF THE TROUGH AXIS. AN UPPER 
LEVEL RIDGE IS NW OF THE TROUGH WITH AN ANTICYCLONIC CIRCULATION 
CENTERED NEAR 27N140W. A 90-95 KT JET STREAM EXTENDS FROM
23N115W ACROSS THE SOUTHERN TIP OF BAJA CALIFORNIA INTO CENTRAL 
MEXICO. SOME HIGH LEVEL MOISTURE IS WITHIN 300 NM S OF THE JET.
IN THE DEEP TROPICS AND UPPER LEVEL ANTICYCLONIC CIRCULATION
IS CENTERED NEAR 7N126W WITH RIDGE FROM THE ANTICYCLONIC 
CIRCULATION NW TO 20N126W. UPPER LEVEL DIFFLUENT FLOW IS 
ENHANCING CONVECTION ALONG THE ITCZ AND SURFACE TROUGH.

SURFACE TROUGH FROM 30N135W TO 28N140W. THE TROUGH WILL 
DISSIPATE LATER TODAY. LARGE SWELLS ARE MOVING INTO THE FAR NW 
PORTION OF THE DISCUSSION AREA AND WILL CONTINUE TO SPREAD SE 
AND BUILD THROUGH WED. A 1022 MB HIGH PRES IS CENTERED NEAR 
29N131W WITH RIDGE COVERING THE AREA N OF 15N W OF 112W. FLOW 
AROUND THE PERIPHERY OF THE HIGH IS PRODUCING 20-25 KT TRADES. A 
COUPLE OF SURFACE TROUGHS ARE ANALYZED ALONG THE ITCZ. THE FIRST 
IS FROM 8N95W TO 2N97W. A LARGE CLUSTER OF CONVECTION ASSOCIATED 
WITH THE TROUGH AND ITCZ IS FROM 2N-5N BETWEEN 93W-98W. SECOND 
TROUGH EXTENDS FROM 10N127W TO 2N130W. SCATTERED MODERATE 
ISOLATED STRONG CONVECTION IS FROM 5N-6N BETWEEN 127W-129W.

GALE FORCE WINDS CONTINUE TO BLOW THROUGH THE GULF OF 
TEHUANTEPEC. THE WINDS ARE EXPECTED TO DECREASE TO BELOW GALE 
FORCE BY TUE MORNING.

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

$$
DGS