000
AXPZ20 KNHC 280908
TWDEP 

TROPICAL WEATHER DISCUSSION      
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SAT MAR 28 2009

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 ALONG 7N78W 1N105W 4N120W 6N140W. SCATTERED MODERATE 
ISOLATED STRONG WITHIN 120 NM S OF AXIS FROM 90W-93W.

...DISCUSSION...
UPPER CYCLONIC CIRCULATION JUST W OF THE DISCUSSION AREA NEAR 
25N142W WITH CYCLONIC FLOW OVER THE NW PORTION OF THE DISCUSSION 
AREA N OF 20N W OF 133W. SCATTERED SHOWERS E OF THE CIRCULATION 
ARE MOVING RAPIDLY NNE FROM 22N-26N BETWEEN 133W-138W. 
DOWNSTREAM UPPER LEVEL RIDGE WITH AXIS FROM 32N125W TO 20N116W. 
ABUNDANT MID TO UPPER LEVEL MOISTURE IS MOVING THROUGH THE 
RIDGE. STRONG MID/UPPER LEVEL CYCLONIC CIRCULATION CENTERED OVER 
SW OKLAHOMA WITH BROAD TROUGH EXTENDING SOUTHWARD ACROSS MEXICO. 
A 95-110 KT JET STREAM IS OVER NORTHERN MEXICO.

IN THE DEEP TROPICS A LARGE ANTICYCLONIC CIRCULATION COVERS THE 
AREA S OF AROUND 10N BETWEEN 90W-115W WITH CENTER OF THE 
CIRCULATION NEAR 2N102W. UPPER LEVEL DIFFLUENT FLOW IS ENHANCING 
CONVECTIVE ACTIVITY E OF THE ANTICYCLONIC CIRCULATION FROM 2N-4N 
BETWEEN 90W-93W. OTHERWISE WIDESPREAD SUBSIDENCE WITH DRY AIR AT 
THE MIDDLE AND UPPER LEVELS OF THE ATMOSPHERE DOMINATES THE AREA 
S OF 15N E OF 115W...WITH JUST A FEW LOW LEVEL CLOUDS ACROSS 
THIS AREA.

SURFACE RIDGE EXTENDS FROM 32N137W TO 15N115W. BROKEN 
STRATOCUMULUS CLOUDS ARE WITHIN THE RIDGE N OF 15N W OF 120W.

$$
DGS