000
AXPZ20 KNHC 260902
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC SAT MAY 26 2007

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 
0230 UTC.

...SPECIAL FEATURES...
A LOW PRESSURE IS LOCATED NEAR 12N110W 1008 MB WITH A BROAD AREA 
OF DIFFLUENT ANTICYCLONIC FLOW ALOFT. THIS FLOW IS ENHANCING 
CONVECTION WITH SCATTERED TO NUMEROUS MODERATE TO STRONG 
CONVECTION WITHIN THE AREA FROM 10N TO 14N BETWEEN 108W AND 
112W.  THE LOW MAY DEVELOP INTO A TROPICAL CYCLONE WITHIN THE 
NEXT 24 TO 48 HOURS. MOTION IS EXPECTED TO BE SLOW TO STATIONARY.

...ITCZ...
INTERTROPICAL CONVERGENCE ZONE AXIS IS ALONG 11N86W 8N105W 
6N125W 5N140W. SCATTERED MODERATE TO STRONG CONVECTION FROM 5N 
TO 11N BETWEEN 91W AND 107W WITHIN 150 NM N OF AXIS FROM 115W TO 
122W.

...DISCUSSION...
QUASI-STATIONARY UPPER LOW CENTERED JUST W OF THE AREA NEAR 
23N143W. AN UPPER LEVEL RIDGE AXIS IS ALONG ROUGHLY 125W...AND 
UPPER TROUGH WITH AXIS FROM SW NEW MEXICO TO THE TIP OF THE BAJA 
PENINSULA. MODERATE TO STRONG TSTMS ARE E OF THE TROUGH AXIS 
ACROSS NORTHERN MEXICO. OTHERWISE MODERATE TO STRONG SUBSIDENCE 
IS N OF 25N FROM 110W TO 130W.

ANTICYCLONIC UPPER FLOW DOMINATES UPPER PATTERN AND S OF 20N
WITH ANTICYCLONIC CIRCULATION NEAR 14N107W. RIDGE AXIS EXTEND E 
TO W ALONG 14N. 

SURFACE RIDGE EXTENDS FROM 32N140W TO 19N119W. A LARGE AREA OF 
BROKEN TO OVERCAST STRATOCUMULUS CLOUDS COVERS THE AREA N OF 15N 
W OF 115W. 

$$
DGS