000
AXPZ20 KNHC 080916
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC MON MAR 08 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 2N79W 8N105W 5N125W 3N130W 3N140W. SCATTERED 
MODERATE ISOLATED STRONG CONVECTION WITHIN 150 NM N OF AXIS FROM 
111W-119W AND WITHIN 90 NM S OF AXIS FROM 121W-123W AND WITHIN 
60 NM EITHER SIDE OF AXIS FROM 130W-134W.

...DISCUSSION...
A FLAT BROAD UPPER LEVEL RIDGE COVERS THE DISCUSSION AREA W OF 
115W...WITH MOSTLY ZONAL WLY FLOW. A 120-125 KT JET STREAM 
ENTERS THE AREA AT 22N140W TO 23N114W THEN NE ACROSS THE 
SOUTHERN BAJA PENINSULA AND INTO NORTHERN MEXICO. UPPER LEVEL 
TROUGH EXTENDS FROM A STRONG WELL DEFINED CYCLONIC CIRCULATION 
OVER SOUTHERN NEVADA NEAR LAS VEGAS S ACROSS THE GULF OF 
CALIFORNIA TO 17N110W. SW FLOW E OF THE TROUGH IS ADVECTING 
ABUNDANT TROPICAL MOISTURE NE INTO SOUTHERN BAJA CALIFORNIA AND 
NORTHERN AND CENTRAL MEXICO. 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 BROAD RIDGE DOMINATES 
THE AREA E OF THE TROUGH EXTENDING FROM AN ANTICYCLONIC 
CIRCULATION CENTERED NEAR 8N99W NE ACROSS SOUTHERN MEXICO INTO 
THE BAY OF CAMPECHE.

SURFACE HIGH PRES RIDGE COVERS THE AREA N OF 15N W OF 110W. FLOW 
AROUND THE PERIPHERY OF THE RIDGE IS PRODUCING BRISK TRADES FROM 
5N-20N W OF 120W. LARGE NW SWELLS COVER MUCH OF THE AREA W OF 
115W CONTINUE TO SLOWLY SUBSIDE. A COUPLE OF TROUGHS ARE 
ANALYZED ALONG THE ITCZ. THE FIRST FROM 11N107W TO 6N108W. 
SCATTERED SHOWERS ARE ALONG THE TROUGH. THE SECOND TROUGH 
EXTENDS FROM 10N123W TO 5N122W. SCATTERED MODERATE TO STRONG 
CONVECTION IS MOSTLY ASSOCIATED WITH THE ITCZ.

MODERATE TO STRONG WINDS IN THE 20 TO 25 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 THIS 
AFTERNOON AND IN THE GULF OF PANAMA AND PAPAGAYO WIND WILL 
DECREASE TUE NIGHT.

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

$$
DGS