000
AXPZ20 KNHC 110918
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC THU MAR 11 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 7N78W 5N95W 7N120W 1N140W. SCATTERED STRONG 
CONVECTION WITHIN 60 NM N AND 120 NM S OF AXIS FROM 90W-93W. 
SCATTERED MODERATE ISOLATED STRONG CONVECTION WITHIN 60 NM 
EITHER SIDE OF AXIS FROM 95W-98W.

...DISCUSSION...
AN UPPER LEVEL RIDGE IS OVER THE NW PORTION OF THE DISCUSSION
AREA N OF 25N W OF 125W. AN ELONGATED UPPER LEVEL TROUGH EXTENDS 
FROM NW MEXICO TO 25N120W 21N140W. A STRONG JETSTREAM IS SE OF 
THE TROUGH WITH WLY WINDS 100-125 KT FROM 20N140W TO 24N124W 
WHERE WINDS INCREASE TO 145-165W THEN ENE ACROSS THE CENTRAL 
BAJA PENINSULA AND THEN INTO NORTHERN MEXICO. BROKEN CIRRUS 
CLOUDS ARE WITHIN 600 NM SE OF THE JET. TRANSVERSE BANDING IS 
NOTED ON THE CIRRUS CLOUDS INDICATING POSSIBLE HIGH LEVEL 
TURBULENCE. MODERATE TO STRONG SUBSIDENCE WITH DRY STABLE AIR AT 
THE MIDDLE AND UPPER LEVELS OF THE ATMOSPHERE IS WITHIN 360 NM N 
OF THE JET W OF 120W.

IN THE DEEP TROPICS AN UPPER LEVEL ANTICYCLONIC CIRCULATION IS 
CENTERED NEAR 9N114W. A RIDGE EXTENDS FROM THE ANTICYCLONIC 
CIRCULATION ENE TO NEAR GUATEMALA/EL SALVADOR. UPPER LEVEL 
DIFFLUENT FLOW SE OF THE ANTICYCLONIC CIRCULATION IS ENHANCING 
CONVECTION ALONG THE ITCZ.

A 1029 MB SURFACE HIGH IS CENTERED NEAR 28N140W. RIDGE DOMINATES 
THE AREA N OF 10N AND W OF 105W. A BROAD SWATH OF NE TO E TRADES 
OF 20 TO 25 KT IS NOTED ON THE SOUTHERN PERIPHERY OF THE RIDGE.

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

$$
DGS