000
AXPZ20 KNHC 020919
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SAT FEB 02 2013

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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
THE MONSOON TROUGH 10N85W TO 5N90W. THE ITCZ EXTENDS FROM 5N85W 
TO LOW PRES NEAR 8N120W 1010 MB TO 4N140W. NO SIGNIFICANT 
CONVECTION.

...DISCUSSION...
SHARP UPPER LEVEL TROUGH ACROSS THE FAR WESTERN PORTION OF THE 
DISCUSSION AREA WITH AXIS FROM 32N137W TO 8N130W. A 145-150 NLY 
JETSTREAM ON THE BACK SIDE OF THE TROUGH JUST W OF THE 
DISCUSSION AREA N OF 15N. ABUNDANT TROPICAL MOISTURE N OF 12N E 
OF THE TROUGH TO BAJA CALIFORNIA. A 95-105 KT JETSTREAM ON THE E 
SIDE OF THE LOW EXTENDS FROM 20N126W N TO 32N123W. AN UPPER 
LEVEL RIDGE EXTENDS FROM 10N101W NORTHWARD THROUGH THE BAJA 
PENINSULA INTO CALIFORNIA. STRONG SUBSIDENCE WITH DRY AND STABLE 
AIR AT THE MIDDLE AND UPPER LEVELS IS S OF 20N E OF 110W.

TIGHT PRES GRADIENT CONTINUES ACROSS SOUTHERN MEXICO WITH GALE 
FORCE WINDS BLOWING THROUGH THE GULF OF TEHUANTEPEC. THE 
GRADIENT IS FORECAST REMAIN TIGHT WITH GALE FORCES WINDS THROUGH 
AT LEAST SUN NIGHT.

ELY WINDS 20-25 KT CONTINUE TO BLOW THROUGH THE GULF OF 
PAPAGAYO AND ARE EXPECTED TO CONTINUE THROUGH MON.

COLD FRONT FROM 32N138W TO 27N140W. THE FRONT WILL DISSIPATE SAT 
NIGHT WITH A TROUGH EXTENDING FROM A LOW PRES CENTERED 20N138W 
TO 28N128W. WINDS WILL INCREASE TO 20-25 KT WITHIN 300 NM N 
SEMICIRCLE OF THE LOW.

$$
DGS