000
AXPZ20 KNHC 070925
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SUN MAR 07 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 IS ALONG 1N79W 2N95W 6N110W 3N140W. SCATTERED MODERATE 
ISOLATED STRONG CONVECTION WITHIN 280 NM N OF AXIS FROM 
101W-104W AND WITHIN 120 NM EITHER SIDE OF AXIS FROM 108W-121W. 

...DISCUSSION...
UPPER LEVEL TROUGH EXTENDS FROM A STRONG WELL DEFINED CYCLONIC 
CIRCULATION OFF THE SOUTHERN CALIFORNIA COAST TO 32N121W TO 
24N122W. AN UPPER LEVEL RIDGE IS OVER THE FAR NW PORTIONS OF THE 
DISCUSSION AREA BEHIND THE TROUGH. STRONG SUBSIDENCE WITH DRY 
AND STABLE AIR AT THE MIDDLE AND UPPER LEVELS OF THE ATMOSPHERE 
COVERS THE AREA FROM 15N-30N W OF 120W. A 115-120 KT JET STREAM 
EXTENDS FROM 21N140W TO 20N120W THEN NE ACROSS THE CENTRAL BAJA 
PENINSULA AND INTO NW MEXICO. SW FLOW E OF THE TROUGH IS 
ADVECTING ABUNDANT TROPICAL MOISTURE NE INTO SOUTHERN BAJA 
CALIFORNIA AND NORTHERN AND CENTRAL MEXICO. A BROAD RIDGE 
DOMINATES THE AREA E OF THE TROUGH...GENERALLY N OF 20N AND E OF 
105W.

IN THE DEEP TROPICS AN UPPER LEVEL ANTICYCLONIC CIRCULATION IS 
CENTERED NEAR 6N92W. UPPER LEVEL DIFFLUENT FLOW W OF THE 
ANTICYCLONIC CIRCULATION IS ENHANCING CONVECTION ALONG THE ITCZ 
BETWEEN 101W-104W.

COLD FRONT EXTEND FROM A 1009 MB LOW PRES CENTERED NEAR 31N119W 
TO 28N118W 23N123W. NW WINDS W OF THE FRONT HAVE DECREASED TO 
BELOW GALE FORCE BUT REMAIN RATHER STRONG IN THE 20-25 KT RANGE. 
SCATTERED SHOWERS ARE WITHIN 90 NM E OF THE FRONT. OTHERWISE 
LARGE NW SWELLS COVER MUCH OF THE AREA W OF 115W.

MODERATE TO STRONG WINDS IN THE 20 TO 30 KT RANGE ACROSS GULF OF 
TEHUANTEPEC...GULF OF PAPAGAYO AND GULF OF PANAMA. THE WINDS IN 
THE GULF OF TEHUANTEPEC ARE  FORECAST DECREASE BELOW 20 KT LATE 
MON AND THE WINDS IN GULF OF PANAMA AND PAPAGAYO SHOULD ALSO 
DECREASE SOME BY TUE.

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

$$
DGS