000
AXPZ20 KNHC 170922
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC TUE FEB 17 2009

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 
0900 UTC.

...ITCZ...
AXIS ALONG 6N77W 1N95W 3N120W 2N140W. NO SIGNIFICANT CONVECTION.

...DISCUSSION...
MID/UPPER LEVEL TROUGH OVER THE NW PORTION OF THE DISCUSSION AREA
FROM 32N127W TO 20N140W. AN 85-100 KT SW JET STREAM EXTENDS 
FROM 23N136W TO 27N126W WHERE WINDS INCREASE TO 125-145W KT 
CONTINUING NE ACROSS NORTHERN BAJA CALIFORNIA. BROKEN CIRRUS 
CLOUDS ARE WITHIN 400 NM SE OF THE JET AXIS. A BROAD MID/UPPER 
LEVEL RIDGE IS E OF THE TROUGH...WITH AXIS FROM AN ANTICYCLONIC 
CIRCULATION NEAR 8N98W N ACROSS MEXICO TO THE BIG BEND OF TEXAS. 
STRONG SUBSIDENCE WITH DRY STABLE AIR COVERS THE AREA S OF 20N E 
OF 115N...WITH MOSTLY CLEAR SKIES ACROSS THIS REGION EXCEPT FOR 
BROKEN LOW LEVEL CLOUDS S OF 5N.

AN UPPER LEVEL TROUGH IN THE DEEP TROPICS WITH AXIS FROM 10N115W 
TO THE EQUATOR AT 106W.

SURFACE 1020 MB HIGH PRES IS CENTERED NEAR 24N118W WITH RIDGE 
FROM THE HIGH CENTER TO 20N106W. SURFACE TROUGH EXTENDS FROM SW 
ARIZONA THROUGH NORTHERN GULF OF CALIFORNIA TO CENTERAL BAJA 
CALIFORNIA NEAR 27N115W. BROKEN OVERCAST CLOUDS BLANKET THE AREA 
N OF 13N W OF 115W.

$$
DGS