000
AXPZ20 KNHC 272045
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC THU APR 27 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 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2030 UTC.

...ITCZ...
ITCZ AXIS IS CENTERED ALONG 6N77W 7N90W 7N110W 4N130W 4N140W. 
SCATTERED MODERATE TO STRONG CONVECTION 160 NM N OF AXIS W OF 
132W. 

...DISCUSSION...
MID- TO UPPER TROPOSPHERIC LOW CENTERED OVER NRN BAJA PENINSULA 
NEAR 32N115W IS EXPECTED TO BE OVER NEW MEXICO DURING THE NEXT 
24 HOURS. ASSOCIATED POSITIVE-TILTED TROUGH EXTENDS FROM THE LOW 
TO 23N132W THEN S TO 11N132W. STRONG SUBSIDENCE GENERATED BY THE 
TROUGH COVERS AN AREA FROM 16N TO 24N W OF 124W. SUBTROPICAL JET 
18N127W 33N100W 28N83W EXTENDS SW TO NE DOWNSTREAM FROM THE 
TROUGH AXIS WITH A JET STREAK OF 120 KT PROPAGATING OVER THE 
CNTRL BAJA PENINSULA. THE JET CONTINUES EWD OVER NRN 
MEXICO/TX/LA AND BIG BEND OF FL BEFORE WEAKENING OVER THE W 
COAST OF FL. MID- TO UPPER LEVEL MOISTURE ASSOCIATED WITH THE 
JET FEEDS INTO MEXICO FROM THE ERN PACIFIC AND SPREADS SE FROM 
THE AXIS APPROXIMATELY 600 NM. SUBTROPICAL RIDGE EXTENDS SW TO 
10N120W FROM A HIGH OVER SRN MEXICO NEAR 20N100W. AN UPPER LEVEL 
TROUGH EXTENDS FROM THE GUATEMALAN/HONDURAN BORDER SW TO 4N98W 
WITH DRYER AIR STRETCHING SE TO THE HONDURAN/NICARAGUAN BORDER. 
BROAD ANTI-CYCLONIC FLOW EXTENDS W TO 93W FROM THE GULF OF 
PANAMA WITH MID TO UPPER MOISTURE COVERING SAME AREA. SURFACE 
HIGH PRESSURE RIDGE DOMINATES THE MAJORITY OF THE FORECAST AREA 
WITH ITCZ CONVECTION CONFINED TO AN AREA W OF 132W.

$$
ROBERTS