000
AXPZ20 KNHC 201501 RRA
TWDEP 

TROPICAL WEATHER DISCUSSION                                    
NWS NATIONAL HURRICANE CENTER MIAMI FL 
1605 UTC THU MAR 20 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.                           

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
              
ITCZ FROM 5N85W TO 6N125W TO 5N140W. NO SIGNIFICANT CONVECTION.

...DISCUSSION...  

A BROAD UPPER LEVEL TROUGH N OF 17N BETWEEN 123W AND 135W...WITH 
GENERALLY ZONAL WESTERN FLOW ACROSS THE DISCUSSION AREA W OF 
123W. AN 80-95 KT JETSTREAM ENTERS THE AREA NEAR 22N140W TO 
22N133W. A BROAD UPPER LEVEL RIDGE COVERS THEN AREA N OF 20N E 
OF THE TROUGH. A LARGE AREA OF MIDDLE AND UPPER LEVEL CLOUDS IS 
WITHIN 500 NM SE OF LINE 18N133W TO 30N115W. TRANSVERSE BANDING 
ON THE CIRRUS CLOUDS INDICATING THE POSSIBILITY OF UPPER LEVEL 
TURBULENCE.

IN THE DEEP TROPICS AN UPPER LEVEL CYCLONIC CIRCULATION IS 
CENTERED NEAR 6N112W. DOWNSTREAM UPPER LEVEL RIDGE WITH AXIS 
FROM 6N83W ACROSS CENTRAL AMERICA. STRONG SUBSIDENCE WITH DRY 
AND STABLE AIR AT THE MIDDLE AND UPPER LEVELS IS E OF 102W.

NLY WINDS ARE FORECAST TO INCREASE TO 20-25 KT THROUGH THE GULF 
OF TEHUANTEPEC LATER THIS AFTERNOON...THEN DECREASE TO 20 KT OR 
LESS FRI AFTERNOON.

ELY WINDS CONTINUE TO BLOW THROUGH THE GULF OF PAPAGAYO AND ARE 
FORECAST TO CONTINUE THROUGH SAT.

$$
DGS