000
AXPZ20 KNHC 020945
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC MON DEC 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... 
MONSOON TROUGH EXTENDS NW FROM 06N77W TO 08N84W TO 09N86W TO 
06N97W TO 08N113W TO 15N123W TO 08N140W.  SCATTERED MODERATE 
ISOLATED STRONG CONVECTION WITHIN 30 NM OF AXIS FROM 90W TO 92W.
SCATTERED MODERATE WITHIN 90 NM OF AXIS FROM 126W TO 137W. 

...DISCUSSION...
DEEP LAYERED TROUGH EXTENDS FROM 32N127W TO WELL DEFINED CYCLONE
AT 23N131W THEN CONTINUE TO 08N140W.  WEAK 1012 MB LOW PRES AT
22N129W IS SURFACE REFLECTION OF CYCLONE ALOFT.  STRENGTHENING 
100KT JETSTREAM SE OF TROUGH AXIS ADVECTS LARGE AMOUNT OF 
TROPICAL MOISTURE NE TOWARDS BAJA CALIFORNIA...NORTHERN HALF OF 
MEXICO AND SOUTHERN HALF OF TEXAS.  BROAD MID TO UPPER LEVEL 
ANTICYCLONE AT 16N100W COVERS REMAINDER OF BASIN N OF 05N WITH
DRY SUBSIDING AIR MASS CAPPING CLOUD VERTICAL DEVELOPMENT E OF
110W.   

...ELSEWHERE AT THE LOWER LEVELS...
PRES GRADIENT BETWEEN AFOREMENTIONED LOW PRES AND VIGOROUS HIGH
PRES CENTER 1034 MB JUST N OF 140W SUPPORT STRONG TO NEAR GALE 
WIND AND SEAS UP TO 13 FT.  GRADIENT EASES AS LOW PRES WEAKENS 
LATER TODAY AND TUE THEN DISSIPATES BY WED DIMINISHING NW WINDS
TO A MODERATE BREEZE.  

GULF OF TEHUANTEPEC...N FLOW DIMINISH TO A MODERATE BREEZE AND
ASSOCIATED SEAS SUBSIDE BELOW 8 FT LATE TUE AS HIGH PRES OVER 
GULF OF MEXICO CUTS OFF SOURCE OF FUNNELING WINDS ACROSS
CHIVELAS PASS.  

GULF OF CALIFORNIA...STRONG NW WINDS ACROSS CENTRAL GULF WATERS
BETWEEN 25-28N DIMINISH BY TONIGHT TO A MODERATE BREEZE AS WEAK
COLD FRONT APPROACHES CALIFORNIA COAST AND SHIFTS WINDS AROUND
TO W-SW. 
 
$$
WALLY BARNES