000
AXPZ20 KNHC 190918
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC THU FEB 19 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 5N77W 1N100W 6N125W 4N140W. NO SIGNIFICANT 
CONVECTION.

...DISCUSSION...
BROAD MID/UPPER LEVEL TROUGH OVER THE NW PORTION OF THE 
DISCUSSION AREA FROM 32N136W TO 21N140W. A 100-110 KT JET STREAM 
EXTENDS FROM 30N140W NE TO 32N134W. A 95-100 KT JET EXTENDS FROM 
27N131W TO NORTHERN BAJA CALIFORNIA INTO SE ARIZONA. SOME HIGH 
LEVEL MOISTURE SE OF THE JET IS MOVING INTO NORTHERN MEXICO.

A BROAD MID/UPPER LEVEL RIDGE IS E OF THE TROUGH...WITH AXIS 
FROM THE TEXAS BIG BEND ACROSS MEXICO TO 13N102W. A LARGE UPPER 
LEVEL CYCLONIC CIRCULATION IS CENTERED ALONG THE COAST OF 
GUATEMALA NEAR 14N91W WITH A TROUGH EXTENDING S FROM THE 
CIRCULATION TO 2N90W. 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 THE 
ITCZ.

COLD FRONT FROM 32N135W TO 27N140W. AN AREA OF RAIN WITH A FEW 
EMBEDDED SHOWERS ARE WITHIN 180 NM E OF THE FRONT. SURFACE RIDGE 
WITH AXIS FROM A 1023 MB HIGH PRES CENTER NEAR 32N121W TO 
18N132W...ANOTHER RIDGE EXTENDS FROM THE HIGH SE TO 14N104W.

$$
DGS