000
AXPZ20 KNHC 170308
TWDEP 

TROPICAL WEATHER DISCUSSION     
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC WED JAN 17 2007

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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0245 UTC.

...ITCZ...

ITCZ AXIS IS CENTERED ALONG 3N78W 4N90W 3N101W 4N110W 4N120W 
5N130W 5N140W. SCATTERED MODERATE WITHIN 30 NM EITHER SIDE OF 
AXIS BETWEEN 119W AND 121W AND ALSO BETWEEN 129W AND 131W.

...DISCUSSION...

UPPER LEVELS...
A DEEP UPPER TROUGH EXTENDS FROM 32N118W TO 18N138W. A STRONG 
JET WITH SW WINDS OF 120 TO 130 KT IS WITHIN 300NM SE OF THE 
TROUGH. EXTENSIVE TROPICAL MOISTURE IS BEING ADVECTED INTO THE 
SW U.S. A RIDGE EXTENDS FROM CENTRAL MEXICO TO NEAR 1N120W 
BRINGING DRY AIR CONDITIONS TO THE AREAS W OF 110W AND S OF 20N.
A TROUGH EXTENDS FROM A CYCLONIC CIRCULATION NEAR 13N88W TO 
1N92W. 

SURFACE...
GALE CONDITIONS ARE OVER THE GULF OF TEHUANTEPEC AREA BECOMING 
STORM CONDITIONS BY EARLY WED. RESIDUAL GALES WILL PERSIST INTO 
THU...THEN START TO DIMINISH AS HIGH PRES OVER THE GULF OF 
MEXICO WEAKEN AND SHIFTS E. NE WINDS OF 20-30 KT CONTINUE ACROSS 
THE GULF OF PAPAGAYO.
A STRONG RIDGE CONTINUES TO CAUSE STRONG NE TRADES W OF 120W.

$$
TORRES