000
AXPZ20 KNHC 170944
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC MON APR 17 2006

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS 
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND 
METEOROLOGICAL ANALYSIS.

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0200 UTC.

...ITCZ...
AXIS...7N80W  3N120W  5N130W  5N140W. 
SCATTERED MODERATE CONVECTION WITHIN 60 NM OF AXIS W OF 127W.

...DISCUSSION...
WEAK UPPER LEVEL RIDGING AND ANTICYCLONIC FLOW ENTERING BASIN 
ALONG 138W BRINGS IN SOME TROPICAL MOISTURE S OF 15N. DEEP LAYER 
LARGE AMPLITUDE UPPER LEVEL TROUGH DIGS FROM 32N120W TO 
CYCLONIC VORTEX AT 20N102W AND CONTINUES S OF EQUATOR AT 99W.
STRONG JETS ASSOCIATED WITH TROUGH REMAIN WELL N OF AREA WITH 
ONLY 50 KT WINDS OBSERVED OVER FORECAST WATERS.  VERY DRY AIR 
MASS DUE TO MODERATE TO STRONG SUBSIDENCE UNDER TROUGH AXIS WITH 
EXCEPTION MENTIONED ABOVE.  VERY HEALTHY MID/UPPER LEVEL RIDGE 
DOWNSTREAM EXTENDS DRY REGION INTO ENTIRE GULF OF MEXICO AND ALL 
OF CARIBBEAN SEA.  

AT THE SURFACE...
HIGH PRES CENTER 1029 MB WELL NW OF E PAC BASIN HAS RIDGE EXTEND 
TO 15N115W PRODUCING MODERATE TO STRONG TRADES S OF S OF 20N W 
OF 120W.  STRONG N WINDS WELL N OF AREA CAUSED LARGE SWELLS 
SPREADING S INTO FORECAST WATERS NEXT 48 HRS.  NW WINDS ALONG 
BAJA CALIFORNIA COAST TO REMAIN BRISK THROUGH FORECAST PERIOD AS 
HIGH PRES MOVES W.

$$
WALLY BARNES