000
AXPZ20 KNHC 020334
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC TUE APR 02 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0300 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... 
THE MONSOON TROUGH EXTENDS SW FROM THE COAST OF COLOMBIA AT 
07N77W TO 07N79W TO 02N93W TO 02N100W WHERE SCATTEROMETER WINDS
INDICATE A TRANSITION TO AN ITCZ. THE ITCZ THEN CONTINUES NW
TO 05N111W TO 05N125W TO BEYOND 02N140W. SCATTERED MODERATE
ISOLATED STRONG CONVECTION IS OBSERVED OVER AND ALONG THE
PACIFIC COAST OF COLOMBIA...AND WITHIN 75 NM EITHER SIDE OF
A LINE FROM 04N83W TO 05N97W...AND WITHIN 90 NM EITHER SIDE
OF A LINE FROM 05N125W TO 03N135W TO 04N140W.

...DISCUSSION... 
GULF OF TEHUANTEPEC...LIGHT SOUTHERLY WINDS ARE EXPECTED ACROSS
THE GULF OF TEHUANTEPEC THROUGH THU EVENING...EXCEPT FOR LATE
NIGHT THROUGH SUNRISE NORTHERLY DRAINAGE FLOW AT 5 TO 10 KT. THE 
NORTHERLY FLOW IS EXPECTED TO INCREASE TO 20 TO 25 KT LATE THU 
NIGHT CONTINUING THROUGH FRI...THEN FURTHER INCREASE TO 20 TO 30 
KT LATE FRI NIGHT THROUGH SUNRISE SAT. THE NORTHERLY WINDS AREA
EXPECTED TO DIMINISH TO 15 KT ON SAT AFTERNOON.   
  
GULF OF PAPAGAYO...ENE WINDS ARE EXPECTED TO PULSE AT 15 TO 20
KT LATE EACH NIGHT TILL JUST AFTER SUNRISE EACH MORNING THROUGH
WED MORNING. THEREAFTER...EXPECTING LIGHT AND VARIABLE WINDS...
WITH THE LATE NIGHT EASTERLY DRAINAGE FLOW ONLY AT 10 TO 15 KT. 

GULF OF PANAMA...LIGHT AND VARIABLE WINDS EXPECTED THROUGH FRI.

GULF OF CALIFORNIA...NW WINDS AT 10 TO 15 KT EXPECTED THROUGH 
MID WEEK THEN THE GRADIENT WILL RELAX SUPPORTING W TO NW 5 TO 
10 KT WINDS THROUGH FRI.

A SURFACE HIGH PRESSURE IS ANALYZED AT 28N125W AND IS EXPECTED 
TO DRIFT N OVER THE NEXT 24 HOURS. SOUTHERLY FLOW IS AT 20 TO 25
KT ACROSS THE WATERS N OF 24N W OF 136W WITH THESE CONDITIONS 
SPREADING E ACROSS THE WATERS N OF 18N W OF 132W LATE TUE IN 
ADVANCE OF A SERIES OF WEAK COLD FRONTS MOVING INTO THE SAME 
AREA TONIGHT AND AGAIN ON WED. BY LATE TUE NIGHT THE GRADIENT
WILL RELAX SUPPORTING SOUTHERLY WINDS AT 15 TO 20 KT. NW FLOW
WILL INCREASE TONIGHT TO 20 TO 25 KT N OF 27N E OF 116W TO BAJA 
CALIFORNIA PENINSULA. THESE CONDITIONS WILL PERSIST THROUGH TUE 
EVENING THEN DIMINISH. NE TRADES WILL INCREASE TO 15 TO 20 KT 
ACROSS THE TROPICS S OF 20N BETWEEN 115W AND 140W WITH SEAS 7
TO 9 FT IN MIXED NE AND NW SWELL.

$$
NELSON