000
AXPZ20 KNHC 230922
TWDEP 

TROPICAL WEATHER DISCUSSION                                     
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
1005 UTC MON FEB 23 2015

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. 

...SPECIAL FEATURE... 

GULF OF TEHUANTEPEC GALE WARNING...HIGH PRES WILL DEVELOP ALONG 
EASTERN MEXICO WITH A RIDGE AXIS EXTENDING SE-S ACROSS THE 
CHIVELA PASS. THE PRES GRADIENT BETWEEN THIS RIDGING AND LOWER 
PRES S OF THE AREA FLOW WILL INCREASE STRONG NORTHERLY WINDS IN 
THE GULF OF TEHUANTEPEC. WINDS WILL FURTHER INCREASE TO MINIMAL 
GALE FORCE LATE TONIGHT INTO TUE MORNING. WINDS ARE FORECAST TO 
DIMINISH BELOW GALE FORCE BY TUE AFTERNOON.
                           
...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... 

ITCZ FROM 06N90W TO 04N115W TO 08N135W TO 06N140W. SCATTERED 
MODERATE TO STRONG FROM 06N TO 19N BETWEEN 126W AND 134W.

...DISCUSSION... 

AN UPPER LEVEL TROUGH IS MOVING THROUGH THE W PORTION OF THE 
DISCUSSION AREA. THE TROUGH EXTENDS FROM 32N137W TO 6N136W. 
UPPER LEVEL DIFFLUENCE SE OF THE TROUGH IS ENHANCING CONVECTION 
FROM 6N-19N BETWEEN 126W-134W. A 125-145 KT NLY JETSTREAM IS 
JUST W OF THE FORECAST AREA. A BROAD UPPER LEVEL RIDGE IS N OF 
20N E OF THE RIDGE. A BROAD TROUGH IS S OF THE RIDGE. AN UPPER 
LEVEL ANTICYCLONIC CIRCULATION IS OFF THE COAST OF GUATEMALA 
NEAR 12N92W WITH RIDGE NE INTO SOUTHERN MEXICO.

AN AREA OF LARGE NW SWELL 8 TO 9 FT MOVED INTO THE AREA W OF A 
LINE 32N130W TO 12N140W. THE PRES GRADIENT WILL TIGHTEN BETWEEN 
A RIDGE TO THE N AND A TROUGH TO S WILL INCREASE ELY WINDS TO 20 
TO 25 KT FROM 19N-25N W OF 130W TUE NIGHT. 

ELY WINDS 20-25 KT WILL CONTINUE TO BLOW THROUGH THE GULF OF 
PAPAGAYO THROUGH WED.

NLY WINDS 20-25 KT IN THE GULF OF PANAMA WILL DIMINISH TONIGHT.

$$ 
DGS