000
AXPZ20 KNHC 280346
TWDEP 

TROPICAL WEATHER DISCUSSION      
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC SAT MAR 28 2009

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. 

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY 
THROUGH 0300 UTC.

...ITCZ...
AXIS ALONG 8N82W 4N88W 2N110W 6N140W. SCATTERED MODERATE WITHIN 
180 NM S OF AXIS BETWEEN 85W AND 91W. SCATTERED MODERATE 
ISOLATED STRONG WITHIN 240 NM OF AXIS W OF 127W

...DISCUSSION...
UPPER CYCLONIC CIRCULATION JUST W OF THE DISCUSSION AREA NEAR 
25N143W WITH CYCLONIC FLOW OVER THE NW PORTION AREA N OF 18N W 
OF 133W. SCATTERED SHOWERS E OF THE CIRCULATION MOVING RAPIDLY 
NNE FROM 21N-27N BETWEEN 132W-134W. DOWNSTREAM UPPER LEVEL RIDGE
WITH AXIS FROM 32N126W TO 21N120W. ABUNDANT MID TO UPPER LEVEL
MOISTURE IS MOVING THROUGH THE RIDGE. STRONG MID/UPPER LEVEL
CYCLONIC CIRCULATION CENTERED OVER SW OKLAHOMA WITH BROAD TROUGH 
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 88W-115W WITH CENTER OF THE 
CIRCULATION NEAR 3N100W. UPPER LEVEL DIFFLUENT FLOW IS ENHANCING 
CONVECTIVE ACTIVITY E OF THE ANTICYCLONIC CIRCULATION FROM 1N-5N
BETWEEN 88W-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 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