000
AXPZ20 KNHC 260924
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC TUE FEB 26 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 ALONG 8N84W 4N95W TO 06N102W. ITCZ FROM 6N102W 
4N115W 7N130W TO 6N140W. SCATTERED MODERATE ISOLATED STRONG 
CONVECTION WITHIN 180 NM N OF AXIS FROM 126W-130W.

...DISCUSSION...
UPPER LEVEL TROUGH ACROSS THE FAR NW PORTION OF THE DISCUSSION 
WITH AXIS FROM 32N135W TO 27N140W. A BROAD FLAT UPPER LEVEL 
RIDGE E OF THE TROUGH IS N OF 20N BETWEEN 110W AND 130W. A WLY 
95-105 KT JETSTREAM ENTERS THE AREA NEAR 20N140W TO 27N132W 
WHERE WINDS INCREASE TO 115-125 KT THEN ACROSS CENTRAL BAJA 
CALIFORNIA INTO MEXICO WHERE WINDS FURTHER INCREASE TO 130-135 
KT. DENSE MIDDLE AND HIGH CLOUDS ARE WITHIN 650 NM S OF THE JET. 
IN THE DEEP TROPICS AN UPPER LEVEL ANTICYCLONIC CIRCULATION IS 
CENTERED NEAR 8N105W. MODERATE TO STRONG SUBSIDENCE WITH DRY 
STABLE AIR AT THE MIDDLE AND UPPER LEVELS IS ACROSS THE AREA 
FROM 5N-20N E OF 105W.

SURFACE HIGH PRES RIDGE IS N OF 15N W OF 115W. THE PRES GRADIENT 
AROUND THE SOUTHERN PERIPHERY OF THE RIDGE IS SUPPORTING 20-25 
KT ELY WINDS FROM 9N-15N W OF 130W. THESE CONDITIONS ARE 
FORECAST THROUGH  WED...THEN EXPAND IN COVERAGE ON THU FROM 
12N-25N W OF 130W. OTHERWISE LARGE NLY SWELLS ARE ACROSS THE 
AREA W OF 115W.

THE PRES GRADIENT HAS WEAKENED SLIGHTLY AND WINDS HAVE DECREASED 
TO BELOW GALE FORCE THE GULF OF CALIFRONIA. HOWEVER THE GRADIENT 
STILL REMAINS TIGHT ENOUGH FOR 20-30 KT. WINDS ARE FORECAST 
DECREASE A LITTLE BIT MORE TO 20-25 KT WED AND THU.

$$
DGS