000
AXPZ20 KNHC 240918
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SAT MAY 24 2008

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.

...TROPICAL WAVES...
TROPICAL WAVE N OF 03N ALONG 85W NEARLY STATIONARY. THE WAVE IS  
DIFFICULT TO TRACK IN THE FACE OF A LARGE SWATH OF WESTERLY 
SURFACE WINDS. CONVECTION IS STILL WELL WEST OF THE WAVE 
AXIS...SEE NEXT PARAGRAPH.
 
...ITCZ...
INTERTROPICAL CONVERGENCE ZONE IS ALONG THE LINE...04N77W TO 
03N95W TO 11N110W TO 10N125W TO 03N140W.
SCATTERED MODERATE WITH ISOLATED STRONG CONVECTION IS WITHIN 75 
NM OF THE POINT 03N85W. SCATTERED MODERATE WITH ISOLATED STRONG 
CONVECTION IS WITHIN THE AREA 90 NM EITHER SIDE OF THE LINE 
11N87.5W TO 04N90.5W.

...DISCUSSION...
A LARGE PORTION OF THE AREA IS COVERED BY THE OUTER REACHES OF A 
CYCLONIC CIRCULATION CENTERED OVER WESTERN NEVADA AND NORTHERN 
CALIFORNIA. THE MIDDLE LEVEL TROUGH IS NORTH OF 16N FROM 105W TO 
132W. THIS AREA IS DRY AND CLOUD FREE IN THE MIDDLE AND UPPER 
LEVELS WITH BROKEN TO OVERCAST STRATOCUMULUS IN THE LOWER 
LEVELS. THE UPPER TROUGH COVERS A LARGER AREA AND IS NORTH OF A 
LINE THROUGH 07N140W TO 16N125W TO 18N105W TO ACROSS SOUTHERN 
MEXICO TO THE YUCATAN PENINSULA. THIS AREA IS ALSO DRY AND CLOUD 
FREE IN THE MIDDLE AND UPPER LEVELS WITH BROKEN TO OVERCAST 
STRATOCUMULUS CLOUDS NORTH OF 19N WEST OF 112W. THE TROUGH IS 
FORECAST TO DRIFT WEST THROUGH AT LEAST 48 HOURS.

REMAINDER OF THE AREA IS UNDER BROAD ANTICYCLONIC FLOW.

WEAK SURFACE RIDGE IS NORTH OF 15N WEST OF 105W. REMAINDER OF 
THE AREA IS ANALYZED AS A BROAD TROUGH.

$$
LL