000
AXPZ20 KNHC 260310
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 12N109W 1006 MB WITH A BROAD AREA 
OF DIFFLUENT ANTICYCLONIC FLOW ALOFT WITHIN 360 NM OF THE 
CENTER. THIS FLOW IS ENHANCING CONVECTION WITH SCATTERED TO 
NUMEROUS MODERATE TO STRONG CONVECTION WITHIN THE AREA FROM 10N 
TO 15N FROM 107W TO 110W.  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 THE LINE...12N87W 
12N91W 7N106W 9N120W 6N132W 6N140W. SCATTERED MODERATE WITHIN 90 
NM S OF AXIS BETWEEN 100W AND 105W...AND BETWEEN 110W AND 115W. 

...DISCUSSION...
AMPLIFIED UPPER PATTERN CONTINUES N OF 15N WITH QUASI-STATIONARY 
UPPER LOW CENTERED NEAR 22N143W...UPPER RIDGE AXIS ALONG ROUGHLY 
125W...AND UPPER TROUGH ALONG 115W OFF THE BAJA COAST. AT THE 
SURFACE...1028 MB HIGH CENTERED NEAR 32N143W BENEATH UPPER LOW. 
SHIP REPORTS FROM EARLIER THIS AFTERNOON INDICATE MODERATE TO 
FRESH TRADES ON THE PERIPHERY OF THE HIGH PRES N OF 15N W OF 
135W. SHIP AND QUIKSCAT DATA INDICATE LIGHT TO MODERATE FLOW 
ELSEWHERE N OF 15N.

ANTICYCLONIC UPPER FLOW DOMINATES UPPER PATTERN ALONG AND S OF 
15N AS MENTIONED IN SPECIAL FEATURES...WITH CONVECTIVE BLOW OFF 
FROM AFOREMENTIONED LOW THE PROMINENT UPPER FEATURE. AT THE 
SURFACE...SHIP AND QUIKSCAT DATA SHOW GENERALLY LIGHT TO 
MODERATE CROSS EQUATORIAL FLOW S OF ITCZ...WITH UP TO 20 KT TO 
THE S OF THE LOW AT 11N109W. WAVEWATCH MODEL CONTINUES TO 
INDICATE MODERATE SLY SWELL AS WELL IN THIS AREA...AND IS 
PREDICTING THE MODERATE BUT LONG PERIOD SWELL TO REACH THE 
MEXICAN COAST BY SAT MORNING.

$$
CHRISTENSEN