000
AXPZ20 KNHC 172131
TWDEP 

TROPICAL WEATHER DISCUSSION                                    
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
2205 UTC TUE MAR 17 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 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2145 UTC. 

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
            
MONSOON TROUGH AXIS EXTENDS FROM 09N83W TO 05N93W TO 04N110W TO 
LOW PRES NEAR 11N117W 1012 MB TO 11N122W TO 06N136W. ITCZ 
EXTENDS FROM 06N136W TO BEYOND 06N140W. SCATTERED MODERATE 
CONVECTION IS FROM 02N TO 09N BETWEEN 84W AND 91W...AND FROM 04N 
TO 10N BETWEEN 113W AND 116W. 
 
...DISCUSSION... 

A 1025 MB HIGH IS LOCATED W OF THE COAST OF CALIFORNIA NEAR 
34N133W PRODUCING SURFACE RIDGING N OF 15N W OF 120W. A SURFACE 
TROUGH IS S OF THE BAJA CALIFORNIA PENINSULA FROM 21N107W TO 
15N108W. FURTHER SOUTH A 1012 MB LOW IS EMBEDDED ON THE MONSOON 
TROUGH NEAR 11N117W WITH CONVECTION NE OF THE CENTER.  
 
20-25 KT GAP WINDS CONTINUE OVER THE GULF OF TEHUANTEPEC WITHIN 
60 NM OF LINE FROM 16N95W TO 14N96W. SEAS ARE 8 TO 9 FT. WINDS 
ARE FORECAST TO DIMINISH TO 20 KT OR LESS WED. 

20-25 KT GAP WINDS CONTINUE OVER THE GULF OF PAPAGAYO FROM 09N 
TO 12N E OF 91W. SEAS ARE 8 TO 9 FT. WINDS ARE FORECAST TO PULSE 
ON AND OFF FOR THE NEXT 24 HOURS AND THEN DIMINISH TO 20 KT OR 
LESS WED EVENING. 

20-25 KT WINDS ARE S OF THE GULF OF PANAMA FROM 03N TO 07N 
BETWEEN 80W AND 82W. SEAS ARE 8 TO 9 FT. WINDS ARE FORECAST TO 
DIMINISH TO 20 KT OR LESS WED EVENING. 

LOOKING AHEAD...A COLD FRONT WILL BE OVER THE NW CORNER ON FRI 
1200 UTC MOVING E.   

IN THE UPPER LEVELS...

AN UPPER LEVEL TROUGH IS W OF BAJA CALIFORNIA N OF 15N BETWEEN 
115W AND 130W. UPPER LEVEL DIFFLUENCE IS SE OF THIS TROUGH 
ENHANCING CONVECTION ALONG THE MONSOON TROUGH BETWEEN 84W AND 
91W. FURTHER E...AN UPPER LEVEL LOW IS CENTERED OVER N MEXICO 
NEAR 28N105W PRODUCING UPPER LEVEL DIFFLUENCE OVER THE WESTERN 
GULF OF MEXICO. ANOTHER UPPER LEVEL LOW IS LOCATED OVER THE 
TROPICS NEAR 2N96W. UPPER LEVEL DIFFLUENCE IS NE OF THIS TROUGH 
ENHANCING CONVECTION ALONG THE COAST OF COSTA RICA.    
 
$$
FORMOSA