000
AXPZ20 KNHC 070939
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC MON JAN 7 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...
MONSOON TROUGH EXTENDS FROM 05N77W TO 06N93W THEN CONTINUES AS 
ITCZ TO 08N114W TO 06N140W. SCATTERED MODERATE CONVECTION IS 
WITHIN 90 NM N OF THE AXIS BETWEEN 113W AND 122W.

...DISCUSSION...
BROAD AND VERY STRONG 1034 MB HIGH PRES CENTER AT 33N140W BRINGS 
STRONG TRADE WINDS WITH ISOLATED AREAS OF WINDS TO 30 KT AND SEAS
GREATER THAN 12 FT TO WESTERN E PAC FROM 08N TO 25N W OF 120W.  
MODERATE NW SWELLS SPREAD THROUGH REMAINDER OF BASIN W OF 110W. 
STRONG HIGH WILL REMAIN NEARLY STATIONARY NEAR 34N135W THROUGH 
TUE NIGHT THEN WEAKEN AS CENTRAL PAC COLD FRONT APPROACHES THE 
WEST COAST. EVEN STRONGER HIGH PRES WILL DEVELOP BEHIND THE COLD 
FRONT NEAR 40N142W BY THU MORNING. EXPECT UNUSUALLY STRONG 1040 
MB OCEANIC HIGH TO REMAIN ANCHORED NEAR 38N137W THROUGH SUN. 
THIS WILL CREATE A VERY TIGHT PRES GRADIENT BETWEEN THE HIGH AND 
LOWER PRESSURE ALONG THE ITCZ...RESULTING IN A BROAD AREA OF 25 
TO 30 KT WINDS AND 13-15 FT SEAS W OF 125W LATER IN THE WEEK.

GAP WINDS...
AREA OF GALE FORCE WINDS IN THE GULF OF TEHUANTEPEC WILL PEAK IN 
SIZE AND INTENSITY LATER THIS MORNING AROUND SUNRISE THEN WEAKEN 
THIS AFTERNOON. WINDS ARE EXPECTED TO DIMINISH BELOW GALE FORCE 
TONIGHT AS SE WINDS DEVELOP IN THE WESTERN GULF OF MEXICO...AND 
CUT OFF THE FORCING MECHANISM FOR ENHANCED N WIND FLOW FUNNELING 
THROUGH THE ISTHMUS OF TEHUANTEPEC.

GULF OF PAPAGAYO...FRESH TO STRONG WINDS ARE EXPECTED TO PULSE 
THROUGH WED AS WESTERN CARIBBEAN TRADES REMAIN NEAR GALE FORCE.  
STRONGEST WINDS OCCUR IN THE LATE NIGHT AND EARLY MORNING HOURS.

A TIGHTENING PRES GRADIENT ACROSS NW MEXICO WILL SUPPORT FRESH 
TO STRONG NW WINDS THE GULF OF CALIFORNIA MON EVENING THROUGH 
TUE AFTERNOON.

$$
MUNDELL