000
AXPZ20 KNHC 091509
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC FRI JUN 09 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 
1045 UTC.
 
...TROPICAL WAVES...
TROPICAL WAVE N OF 3N ALONG 80W IS MOVING W AT 12 KT. SCATTERED 
MODERATE CONVECTION LIES ALONG THE WAVE AXIS. ACTIVITY HAS NOT 
CHANGED MUCH DURING THE PAST SEVERAL HOURS. THERE IS NO 
ORGANIZATION AT THIS TIME AND NO CYCLONIC TURNING.

TROPICAL WAVE N OF 3N ALONG 94W HAS BEEN MOVING W AT 10 KT. 
THERE IS AN AREA OF ACTIVE CONVECTION CENTERED NEAR 13N93W. THE 
AREA IS MORE A CLUSTER THAN BAND AND HIGH LEVEL WINDS CONTINUE 
OVER THE TOP OF THE ACTIVITY FROM THE NE WHILE LOW LEVEL WINDS 
ARE SWLY.

TROPICAL WAVE ALONG 113W FROM 5N TO 14N IS MOVING W AT 10 KT. 
NO CONVECTIVE ACTIVITY NOTED IN SATELLITE IMAGERY.

..ITCZ...
THE INTERTROPICAL CONVERGENCE ZONE AXIS ALONG 6N80W 11N93W 
7N112W 6N120W 7N134W 5N140W. SCATTERED MODERATE CONVECTION N OF 
2N E OF 80W. SCATTERED MODERATE WITHIN 30 NM OF 8N105W. ISOLATED 
MODERATE NEAR 6N123W. SCATTERED MODERATE WITHIN 20 NM OF A LINE 
FROM 8N122W TO 9N135W TO 7N140W.

SCATTERED STRONG CONVECTION WITHIN 60 NM OF 13N93W. ISOLATED 
MODERATE NEAR 15N96W AND 15N106W.

...DISCUSSION...

UPPER LEVELS...

A STRONG UPPER RIDGE CONTINUES TO HOLD FIRM OVER THE SRN PLAINS 
TONIGHT BLOCKING A PACIFIC UPPER TROUGH ALONG 120W FROM MOVING 
E. THE TROUGH IS TRYING TO LIFT OVER THE RIDGE BUT IT'S MAIN 
ANCHOR OVER NW WA STATE IS STATIONARY. A SECOND BROAD RIDGE W OF 
130W HAS A RIDGE AXIS NNE ALONG 135W N OF THE AREA WHICH IS 
STRENGTHENING AS A STRONG UPPER TROUGH ALONG 150W MOVES SLOWLY 
EWD.

SURFACE...

A 10008 LOW NEAR 15N104W IS DRIFTING W WITH NO SIGNS OF 
STRENGTHENING. THE PACIFIC RIDGE ALONG 135W IS CENTERED N OF THE 
AREA BUT EXTENDS S TO 10N AND E DOWN THE BAJA PENINSULA TO 110W. 
THE RIDGE IS PRODUCING NE TRADES TO 20 KT BETWEEN 10N AND 25N W 
OF 130W AND NLY WINDS BETWEEN 120W AND 130W OF 20 KT S TO NEAR 
20N. CROSS EQUATORIAL SLY WINDS CONTINUE TO ACCELERATE TOWARD 
LOWER PRESSURE S OF 12N BETWEEN 90W AND 110W. SSMI CONFIRMS WHAT 
THE GFS MODEL SHOWS THAT WINDS SHIFT TO SWLY AT ABOUT 20 KT.

$$
FET