000
AXPZ20 KNHC 081500
TWDEP 

TROPICAL WEATHER DISCUSSION                  
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
1605 UTC TUE APR 08 2014

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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC. 

...SPECIAL FEATURE...
                                    
NLY WINDS OF 20-30 KT WITH WILL BEGIN TO BLOW THROUGH THE GULF 
OF TEHUANTEPEC THIS AFTERNOON AND WILL QUICKLY INCREASE TO 30-45 
KT. WINDS INCREASE TO STORM FORCE TO 40-50 KT WED THEN BACK TO 
GALE FORCE WED EVENING. SEAS ARE EXPECTED TO BUILD UP TO 18-23 
FT IN WITH THE STORM FORCE WINDS. A STORM WARNING REMAINS IN 
EFFECT FOR THIS AREA. EXPECT WINDS TO DIMINISH TO BELOW GALE 
FORCE BY THU AFTERNOON.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
 
MONSOON TROUGH FROM 7N78W TO 5N92W. ITCZ FROM 5N92W TO 2N109W TO 
1N115W AND FROM 4N132W TO 5N140W. SCATTERED MODERATE TO STRONG 
CONVECTION WITHIN 80 NM S OF AXIS FROM 83W-89W AND FROM 2N-8N 
BETWEEN 131W-140W.

...DISCUSSION...                                                

AN UPPER LEVEL RIDGE IS ACROSS THE W PORTION OF THE DISCUSSION 
AREA AND EXTENDS FROM AN ANTICYCLONIC CIRCULATION CENTERED NEAR 
6N133W TO 30N125W. A 115-135 KT JETSTREAM EXTENDS FROM 27N140W 
TO 30N130W WHERE WINDS DECREASE TO 95-105 KT THEN CONTINUES SE 
TO 17N118W. AN UPPER TROUGH E OF THE RIDGE WITH AXIS FROM JUST 
OFF THE COAST OF BAJA CALIFORNIA NEAR 28N116W TO THE EQUATOR AT 
112W. MODERATE TO STRONG SUBSIDENCE WITH DRY AND STABLE AIR AT 
THE MIDDLE AND UPPER LEVELS IS BETWEEN THE RIDGE AND THE TROUGH 
AXIS. HIGH LEVEL MOISTURE IS WITHIN 600 NM E OF THE TROUGH AXIS 
N OF 5N.

SURFACE HIGH PRES RIDGE COVERS THE AREA N OF 15N W OF 110W. THE 
PRES GRADIENT BETWEEN THE ITCZ AND THE RIDGE IS PRODUCING AN 
AREA OF ELY WINDS 20 KT FROM 4N-15N W OF 130W WITH SEAS 8 TO 10 
FT. 

A 1007 MB LOW IS FORECAST TO BE NEAR 30N140W WED MORNING. SE-S 
WIND 20-25 KT E OF THE LOW N OF 25N W OF 135W WITH SEAS 8-9 FT.

ELY WINDS 20-25 KT ARE FORECAST TO BLOW THROUGH THE GULF OF 
PAPAGAYO THU MORNING.

$$ 
DGS