000
AXPZ20 KNHC 100919
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC WED MAR 10 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 6N77W 4N100W 46115W 5N140W. SCATTERED MODERATE TO 
STRONG CONVECTION WITHIN 60 NM EITHER SIDE OF AXIS FROM 
118W-122W AND WITHIN 100 NM S OF AXIS FROM 126W-128W. SCATTERED 
MODERATE ISOLATED STRONG CONVECTION WITHIN 90 NM EITHER SIDE OF 
AXIS FROM 138W-140W.

...DISCUSSION...
SHARP UPPER LEVEL TROUGH WITH AXIS FROM LOS ANGELES CALIFORNIA 
TO 30N125W 24N140W. A STRONG JETSTREAM IS SE OF THE TROUGH WITH 
WLY WINDS 125-155 KT FROM 20N140W 26N120W ACROSS THE CENTRAL 
BAJA PENINSULA AND THEN INTO NORTHERN MEXICO. BROKEN CIRRUS 
CLOUDS ARE WITHIN 480 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 200 NM N 
OF THE JET.

A BROAD RIDGE IS TO THE SE OF THE TROUGH AND COVERS THE 
REMAINDER OF THE DISCUSSION AREA WITH AN ANTICYCLONIC 
CIRCULATION CENTERED NEAR 07N105W. BETWEEN THIS TROUGH AND THE 
RIDGE...MOIST W-SW FLOW ALOFT CONTINUES TO ADVECT MOISTURE FROM 
THE DEEP TROPICS NORTHEASTWARD FROM INTO CENTRAL MEXICO.

IN THE DEEP TROPICS AN UPPER LEVEL ANTICYCLONIC CIRCULATION IS 
CENTERED NEAR 9N124W. UPPER LEVEL DIFFLUENT FLOW S OF THE 
ANTICYCLONIC CIRCULATION IS ENHANCING CONVECTION ALONG THE
ITCZ.

SURFACE 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