000
AXPZ20 KNHC 191504
TWDEP 

TROPICAL WEATHER DISCUSSION   
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC WED APR 19 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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC.

...ITCZ...
ITCZ AXIS IS CENTERED ALONG 6N78W 6N100W 7N120W 4N140W. 
SCATTERED MODERATE ISOLATED STRONG WITHIN 30 NM EITHER SIDE OF 
THE AXIS FROM 82W AND 85W. SCATTERED MODERATE WITHIN 100 NM S OF 
AXIS FROM 109W TO 115W.

...DISCUSSION...
BROAD RIDGE OVER THE WESTERN PORTION OF THE AREA W OF 120W IS 
MOVING EWD AS THE NEXT UPPER LEVEL TROUGH APPROACHES THE AREA.
SATELLITE GENERATED WINDS INDICATE A 75-90 KT JET STREAM FROM 
20N140W TO 22N135W WHERE THE WINDS DECREASE TO 40 TO 50 KT.
MID/UPPER LEVEL TROUGH EXTENDS FROM CYCLONIC CIRCULATION JUST N 
OF THE AREA OVER SOUTHERN CALIFORNIA TO THE NORTHERN BAJA 
PENINSULA NEAR 32N116W S TO 7N110W. NO SIGNIFICANT WEATHER 
ASSOCIATED WITH THE TROUGH AS THE AIRMASS IS VERY DRY N OF THE 
ITCZ BETWEEN 90W AND 125W. UPPER LEVEL ANTICYCLONIC CIRCULATION 
OVER COLOMBIA WITH RIDGE AXIS NWD TO CENTRAL AMERICA THEN INTO 
THE YUCATAN PENINSULA.

SURFACE HIGH PRES RIDGE COVERS THE AREA N OF 13N W OF 115W. 
BROKEN TO OVERCAST STRATUS AND STRATOCUMULUS CLOUDS IS WITHIN 
THE RIDGE. 
 
$$
DGS