000
AXPZ20 KNHC 061527
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC WED MAR 06 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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 9N78W 5N85W TO 4N100W. ITCZ FROM 4N100W 
5N125W TO 3N140W. NO SIGNIFICANT CONVECTION.

...DISCUSSION...
BROAD UPPER LEVEL TROUGH OVER THE NW PORTION OF THE DISCUSSION 
AREA IS N OF 25N W OF 120W. MODERATE TO STRONG SUBSIDENCE WITH 
DRY STABLE AIR AT THE MIDDLE AND UPPER LEVELS IS WITHIN THE 
TROUGH FROM 25N-30N W OF 120W. A 90-100 KT JETSTREAM IS AT THE 
BASE OF THE TROUGH ENTERING THE AREA FROM 17N140W TO 22N120W 
THEN WEAKENS TO 75-80 KT INTO CENTRAL BAJA CALIFORNIA. BROKEN 
TO OVERCAST MIDDLE AND HIGH CLOUDS ARE WITHIN 400 NM S OF THE 
JET. IN THE DEEP TROPICS AN UPPER LEVEL TROUGH EXTENDS FROM
15N100W TO THE EQUATOR AT 100W.

THE PRES GRADIENT HAS TIGHTENED ACROSS SOUTHERN MEXICO WITCH HAS 
RESULTED IN WINDS INCREASING TO GALE FORCE THROUGH THE GULF OF 
TEHUANTEPEC. THE GALE CONDITIONS ARE EXPECTED TO CONTINUE 
THROUGH THU.

A WEAK COLD FRONT IS BRUSHING THE FAR N PORTION OF THE AREA FROM 
32N123W TO 26N133W. NO SIGNIFICANT WEATHER ASSOCIATED WITH THE 
FRONT. LARGE NW SWELLS TO 11 FT ACROSS THE AREA W OF 110W.

ELY WINDS CONTINUE TO BELOW THROUGH THE GULF OF PAPAGAYO AND 
EXPECTED TO CONTINUE THROUGH FRI.

$$
DGS