000
AXPZ20 KNHC 130957
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC THU NOV 13 2008

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

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0945 UTC.

...ITCZ...

THE INTERTROPICAL CONVERGENCE ZONE AXIS ALONG 08N78W 09N85W 
06N96W 11N115W 08N140W. SCATTERED STRONG N OF 06N E OF 80W. 
SCATTERED MODERATE WITHIN 120 NM OF THE AXIS BETWEEN 88W AND 
100W. 
 
...DISCUSSION...
AMPLIFIED PATTERN CONTINUES N OF 20N WITH NARROW SHARP MID/UPPER 
LEVEL TROUGH EXTENDING FROM CENTRAL TEXAS THROUGH N CENTRAL 
MEXICO TO CYCLONIC CIRCULATION AT THE BASE OF THE TROUGH NEAR 
23N103W. UPSTREAM DEEP LAYER BLOCKING RIDGE IS ALONG 125W
WITH A DEEP LAYERED ANTICYCLONE NEAR 33N125W. MUCH FURTHER 
WEST...ANOTHER TROUGH IS DIGGING EAST TO THE NORTH OF HAWAII 
PUSHING A SURFACE COLD FRONT TOWARD THE ISLANDS. THE UPPER 
RIDGE WILL SHIFT EAST SLIGHTLY AS THE TROUGH ADVANCES FROM THE 
WEST. DEFORMATION AXIS IS LOCATED BETWEEN THE TROUGH AND RIDGE 
ROUGHLY ALONG 18N113W TO 28N130W WITH AN EMBEDDED COL NEAR 
23N123W. STRONG SUBSIDENCE ALOFT WAS NOTED WITHIN THE 
DEFORMATION AXIS AND WRAPPING EWD INTO THE BASE OF THE SHARP 
UPPER TROUGH NOTED ABOVE. 

AT THE SURFACE...A 1031 MB HIGH NEAR 34N135W RIDGED SE THROUGH 
30N130W TO 21N115W. 0314 UTC HIGH RESOLUTION QUIKSCAT PASS 
STILL INDICATED A BAND OF 20 TO 25 KT TRADE WINDS S OF THE 
SURFACE HIGH GENERALLY FROM 10N TO 24N W OF 123W...WITH 
NORTHERLY WINDS OF 20 TO OCCASIONALLY 25 KT BETWEEN THE SURFACE 
HIGH CENTER AND THE BAJA COAST. THE TRADES SOUTH OF THE SURFACE 
HIGH WILL DIMINISH AS THE RIDGE TO THE NORTH AND THE SURFACE 
HIGH AS WELL MIGRATE NORTHEAST AND WEAKEN. 

MEANWHILE HIGH PRES OVER THE GREAT BASIN IS INTERACTING WITH LOW 
PRES OVER SOUTHERN CALIFORNIA TO SUPPORT FRESH NW WINDS IN THE 
GULF OF CALIFORNIA THROUGH THU. 0130 UTC QUIKSCAT PASS INDICATED 
A SOLID AREA OF 20 KT WINDS IN THE GULF OF CALIFORNIA...AND 
20 KT SOUTHERLY WINDS ACTIVE E OF THE GALAPAGOS TOWARD PANAMA.

$$
COBB