000
AXPZ20 KNHC 070932
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC FRI MAY 07 2010

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. 

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC.

...ITCZ...
AXIS EXTENDS ALONG 07.5N78W TO 05.5N91W TO 10N114W TO 05N134W TO 
05N140W. SCATTERED MODERATE ISOLATED STRONG CONVECTION WITHIN 60 
NM EITHER SIDE OF AXIS BETWEEN 114W TO 120W. ISOLATED MODERATE 
CONVECTION WITHIN 90 NM S OF AXIS W OF 136W.

...DISCUSSION...
AN UPPER LEVEL TROUGH PREVAILS N OF 20N W OF 130W...WITH 
EMBEDDED CYCLONIC VORTEX CENTERED NEAR 25N134W. ANTICYCLONIC 
FLOW AND RIDGING PREVAIL E OF THIS FEATURE. THE SUBTROPICAL JET 
ENTERS THE AREA NEAR 12N140W...EXTENDING NE AROUND THE BASE OF 
THE AFOREMENTIONED TROUGH...THEN CURVING ANTICYCLONICALLY TOWARD 
THE N PART OF THE BAJA PENINSULA. WEAK RIDGING PREVAILS ACROSS 
MUCH OF THE DEEP TROPICS...WITH THE EXCEPTION OF A SHARP TROUGH 
EXTENDING ACROSS NICARAGUA TO 10N92W. 

AT THE SURFACE...
BROAD HIGH PRES 1029 MB CENTERED NEAR 33N136W WITH RIDGE 
EXTENDING TO 15N101W. FRESH NE TRADEWINDS AROUND THE S AND SW 
PERIPHERY OF THE HIGH ARE EXPECTED TO CONTINUE THROUGHOUT THE 
FORECAST PERIOD. NE SWELLS GENERATED FROM THE TRADES ARE MIXING 
WITH CROSS EQUATORIAL S SWELL E OF 130W. 

GAP WINDS...STRONG TRADES IN THE SW CARIBBEAN ARE FUNNELING INTO 
THE GULF OF PAPAGAYO PRODUCING TO FRESH NE-E WINDS...AND ARE 
EXPECTED TO CONTINUE THROUGH THE FORECAST PERIOD.

$$
AL