000
AXPZ20 KNHC 051602
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC TUE JAN 05 2010

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 
0915 UTC.

...ITCZ...
AXIS IS ALONG 3N78W 8N110W 7N130W 5N140W. NO SIGNIFICANT 
CONVECTION.

...DISCUSSION...
AN UPPER LEVEL RIDGE OVER THE NW PORTION OF THE DISCUSSION AREA 
EXTENDS 32N124W TO 25N140W. A MID TO UPPER LEVEL SHORTWAVE 
TROUGH EXTENDS THE THE SW ARIZONA ACROSS NORTHERN BAJA 
CALIFORNIA TO 26N116W. ANOTHER UPPER LEVEL TROUGH FURTHER INTO 
THE TROPICS EXTENDS FROM 21N120W TO 10N125W. MODERATE TO STRONG 
SUBSIDENCE WITH DRY STABLE AIR AT THE MIDDLE AND UPPER LEVELS OF 
THE ATMOSPHERE IS N OF THE ITCZ TO 22N W OF THE TROUGH AXIS. A 
95-100 KT JETSTREAM IS SE OF THE TROUGH AXIS EXTENDS FROM 
22N113W INTO NORTHERN MEXICO WHERE THE WINDS 110-120 KT. 
ABUNDANT TROPICAL MOISTURE IS BEING ADVECTED NE TOWARDS MEXICO 
ON THE SW FLOW E OF THE TROUGH. 

A LARGE UPPER LEVEL ANTICYCLONIC CIRCULATION IN THE DEEP TROPICS 
OFF THE COAST OF PANAMA IS CENTERED NEAR 7N83W. ANTICYCLONIC 
FLOW DOMINATES THE AREA S OF 18N E OF 105W. STRONG SUBSIDENCE IN 
THIS AREA AS SUPPRESSED CONVECTIVE ACTIVITY ALONG THE ITCZ WITH 
ONLY ISOLATED SHOWERS. 

A 1021 MB SURFACE HIGH PRES IS CENTERED NEAR 32N132W....WITH ITS 
ASSOCIATED RIDGE DOMINATING THE AREA N OF 15N W OF 115W. FLOW 
AROUND THE RIDGE ARE PRODUCING TRADES IN THE 20-25 KT RANGE FROM 
8N-17N W OF 115W. A COUPLE OF TROUGH ARE ANALYZED ALONG THE 
ITCZ. THE FIRST EXTENDS FROM 11N113W TO 5N115W. MODERATE 
CONVECTION IS JUST TO THE NE OF THE TOUGH FROM 11N-13N BETWEEN
110W-112W. ANOTHER TROUGH HAS AXIS FROM 12N132W TO 5N135W. NO 
SIGNIFICANT WEATHER ASSOCIATED WITH THE TROUGH.

STORM FORCE WINDS ARE BLOWING THROUGH THE GULF OF TEHUANTEPEC 
AND ARE EXPECTED TO DECREASE TO GALE FORCE TONIGHT THEN TO 
BELOW GALE FORCE LATE WED.
 
E WINDS OF 20 KT IN AND DOWNSTREAM OF THE GULF OF PAPAGAYO ARE 
EXPECTED TO CONTINUE THROUGH THU.

N WINDS AT 20 KT IN THE GULF OF PANAMA ARE EXPECTED TO CONTINUE 
THROUGH THU.

FOR ADDITIONAL INFORMATION PLEASE VISIT 
HTTP://WWW.HURRICANES.GOV/MARINE
  
$$
DGS