000
AXPZ20 KNHC 071523
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC SUN JUN 07 2009

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. 

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC.

...ITCZ...

AXIS 08N78W TO 07N90W TO 08N100W TO 11N114W TO 06N129W TO 
08N140W. NUMEROUS STRONG CONVECTION IS LOCATED WITHIN 90 NM 
EITHER SIDE OF A LINE FROM 11N114W TO 11N120W. SCATTERED 
MODERATE ISOLATED STRONG CONVECTION IS LOCATED WITHIN A 90 NM 
RADIUS OF 06.5N87W AND ALSO FROM 08N TO 12N W OF 138W.

...DISCUSSION...

W OF 110W...
A LARGE MIDDLE/UPPER LEVEL TROUGH LOCATED OVER THE WESTERN 
UNITED STATES EXTENDS SOUTHWARD TO 22N E OF 140W INTO NW MEXICO. 
THE TROUGH AXIS EXTENDS THROUGH 32N125W TO NEAR 24N140W AND IS 
FORECAST TO BE ORIENTED ALONG A NEARLY NORTH-SOUTH AXIS OVER THE 
NEXT TWO DAYS. AN AREA OF OVERCAST LAYERED CLOUDS IS LOCATED 
FROM 25N TO 30N BETWEEN 123W AND 130W. AN UPPER LEVEL 
SOUTHWESTERLY JET STREAM IS LOCATED THROUGH 16N140W TO 20N126W 
AND ACROSS THE CENTRAL BAJA CALIFORNIA PENINSULA. WINDS ALONG 
THE JET ARE STRONGEST BETWEEN 120W AND 135W WITH SATELLITE CLOUD 
DRIFT WINDS INDICATING SPEEDS UP TO 70 KT. WINDS ALOFT OVER THE 
TROPICS S OF ABOUT 12N ARE MOSTLY LIGHT. AT THE SURFACE A TROUGH 
IS LOCATED FROM 14N133W TO 09N140W AND MOVING W 5 TO 10 KT. FROM 
12N TO 17N W OF 132W WINDS ARE NE TO 20 KT AND SEAS TO 8 FT. 
ANOTHER SURFACE TROUGH IS LOCATED FROM 13N114W TO 06N118W.

E OF 110W...
MODERATE NORTHEASTERLY WINDS ARE LOCATED OVER MOST OF THE 
EASTERN PART OF THE DISCUSSION AREA. WATER VAPOR IMAGERY 
INDICATES STRONG SUBSIDENCE N OF 12N BETWEEN 95W AND 110W. AN 
UPPER LEVEL ANTICYCLONIC CIRCULATION IS FORECAST TO DEVELOP OVER 
SW MEXICO IN THE VICINITY OF 21N103W IN 48 HOURS.

$$
CAB