000
AXPZ20 KNHC 230915
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC FRI MAY 23 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 83W/84W MOVE W AT 10 KT. NO 
CONVECTION IS LOCATED WITHIN 90 NM OF THE WAVE AXIS. IN FACT THE 
REGION NEAR THE WAVE AXIS HAS LESS CONVECTION THAN THE AREAS 
BOTH EAST AND WEST OF THE AXIS.
 
...ITCZ...
INTER TROPICAL CONVERGENCE ZONE IS ALONG THE LINE...05N77W TO 
05N90W TO 10N110W TO 10N125W TO 03N140W. SCATTERED MODERATE WITH 
ISOLATED STRONG CONVECTION IS WITHIN THE AREA FROM 85W TO 89W N 
OF 06N. SCATTERED MODERATE WITH ISOLATED STRONG CONVECTION IS 
WITHIN 75 NM OF THE POINT 10N115W. SCATTERED MODERATE TO STRONG 
CONVECTION IS WITHIN 75 NM OF THE POINT 11N122W.

...DISCUSSION...
A DEEP LAYER CYCLONIC CIRCULATION CENTERED OVER THE SOUTHWEST 
UNITED STATES EXTENDS OVER A LARGE AREA NORTH OF A LINE 32N136W 
TO 15N125W TO 15N100W TO BEYOND 22N90W. ANOTHER CYCLONIC 
CIRCULATION CENTERED NORTHWEST OF THE AREA NEAR 32N148W EXTENDS 
OVER THE AREA N OF 20N WEST OF 135W.  THE ENTIRE AREA NORTH OF 
THE ITCZ WEST OF 95W IS DRY AND CLOUD FREE IN THE MIDDLE AND 
UPPER LEVELS. SCATTERED STRATOCUMULUS IS WITHIN THE AREA 150 NM 
EITHER SIDE OF A LINE 32N141W TO 23N132W TO 22N120W. OTHERWISE 
BROKEN TO OVERCAST STRATOCUMULUS CLOUDS ARE OBSERVED NORTH OF 
15N WEST OF 110W.

REMAINDER OF THE AREA IS COVERED BY WEAK ANTICYCLONIC FLOW.

AN AREA OF ENHANCED CONVECTION WITH LITTLE OR NO ORGANIZATION IS 
FROM 85W TO 90W FROM THE EQUATOR NORTH TO MEXICO.

WEAK RIDGE IS NORTH OF THE ITCZ WEST OF 125W. BROAD CYCLONIC 
FLOW IS NORTH OF A LINE 32N125W TO 20N120W TO 10N85W. ELSEWHERE 
WEAK TROUGH IS ANALYZED.

STRONG HIGH PRES CENTER N OF AREA PRODUCED STRONG NLY WINDS 
ALONG CALIFORNIA COAST WITH GALE FORCE JUST N OF 32N. LARGE LONG 
PERIOD SWELL..RANGING FROM 9 TO 12 SECONDS...OBSERVED AS HIGH AS 
18 FT ENCROACHED INTO E PAC N OF 20N.  STRONG GUSTY WINDS 
ALSO SPILLING INTO GULF OF CALIFORNIA THROUGH MOUNTAIN GAPS.  

$$
LL