000
AXPZ20 KNHC 172130
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC MON JAN 17 2011

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

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2100 UTC.

...ITCZ...

THE INTERTROPICAL CONVERGENCE ZONE AXIS IS CENTERED ALONG 05N77W 
TO 07N108W TO 08N140W. SCATTERED MODERATE CONVECTION WITHIN 90 NM
N OF AXIS BETWEEN 121W AND 132W.

...DISCUSSION...

HIGH PRESSURE RIDGE EXTENDS ACROSS NORTHERN PORTION OF THE AREA 
ANCHORED BY A 1030 MB HIGH CENTERED NEAR 39N134W. THE PRESSURE 
GRADIENT BETWEEN THE RIDE AND LOWER PRESSURE ASSOCIATED WITH THE 
ITCZ IS MAINTAINING MODERATE TO FRESH TRADE WINDS W OF 130W. THE 
TRADES ARE ENHANCING LOW LEVEL CONVERGENCE AND SCATTERED MODERATE
CONVECTION W OF 122W. HIGH PRES WILL REMAIN N OF THE AREA THROUGH
48 HOURS AND MAINTAIN AN AREA OF FRESH NORTHERLY WINDS N OF 22N 
BETWEEN 120W AND 135W. LONG PERIOD NW SWELL IN THE FAR NW PART 
OF THE AREA WILL PROPAGATE SE ACROSS THE AREA W OF 120W AND N OF 
08N THROUGH 48 HOURS. 

$$
MUNDELL