000
AXPZ20 KNHC 011530
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC TUE APR 01 2008

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

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY 
THROUGH 1515 UTC.

...ITCZ...
ITCZ AXIS IS CENTERED ALONG 07N78W 02N100W 04N115W 02N140W. 
SCATTERED MODERATE AND EMBEDDED ISOLATED STRONG CONVECTION IS 
WITHIN 90 NM AND 60 NM S OF THE AXIS BETWEEN 111W-117W. 
SCATTERED MODERATE/ISOLATED STRONG CONVECTION IS WITHIN 120 NM N 
OF THE AXIS BETWEEN 133W-138W.

...DISCUSSION...

A DEEP LAYER LOW IS SPINNING JUST N OF THE DISCUSSION AREA NEAR 
34N133W...WITH THE ASSOCIATED SFC LOW ANALYZED 1010 MB. A COLD 
FRONT EXTENDS SWD FROM THE LOW ACROSS 30N132W TO 25N140W. 
LIGHTNING DATA SHOWS SCATTERED TSTM ACTIVITY N OF 29N WITHIN 60 
NM E OF THE FRONT. WINDS ARE NEAR 20 KT EITHER SIDE OF THE 
FRONT. W OF THE FRONT...NW SWELLS ARE BUILDING TO 8 FT OVER THE 
FAR NW CORNER AND EXPECTED TO BUILD ANOTHER FT OR SO AND SPREAD 
E. FARTHER SE...A LARGE UPPER HIGH IS PARKED OVER THE TROPICAL 
EPAC NEAR 15N103W. THIS HIGH IS ACTING AS A BLOCK...PREVENTING A 
SIGNIFICANT SWD PUSH OF THE AFOREMENTIONED FRONT. A SHORTWAVE 
TROUGH LIES ROUGHLY MIDWAY BETWEEN THE TROUGH AND HIGH ALONG 
117W/118W. A SWLY JET BRANCH ORIGINATES JUST E OF THE SHORTWAVE 
NEAR 21N117W AND EXTENDS TO CENTRAL BAJA NEAR 28N114W AND THEN 
INLAND OVER MAINLAND MEXICO. A PLUME OF MAINLY MID-HIGH LEVEL 
CLOUDINESS IS BEING DRAWN NE WITHIN 300 NM E OF THE JET.

ELSEWHERE AT THE SFC...THE OVERALL PRES PATTERN IS FAIRLY WEAK 
DUE TO THE AFOREMENTIONED LOW N OF THE REGION. RESIDUAL N TO NW 
WINDS TO 20 KT ARE STILL OCCURRING NEAR THE BAJA COAST...AS 
SUGGESTED LOW-LEVEL CLOUD FUNNELING. OTHERWISE...NE TRADES TO 20 
KT ARE CONFINED TO THE SW PORTION OF THE AREA. 

$$
CANGIALOSI