000
AXPZ20 KNHC 060937
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC FRI APR 6 2007

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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC.

...ITCZ...
AXIS 8N78W 6N118W 4N130W 6N140W. SCATTERED MODERATE TO STRONG 
CONVECTION WITHIN 60 NM S OF AXIS BETWEEN 89W AND 96W.

...DISCUSSION...
AMPLIFIED UPPER RIDGE AXIS ALONG 110W. A CUT-OFF MID/UPPER LOW IS 
CENTERED NEAR 33N120W. UPPER TROUGH EXTENDS FROM 30N120W WSW TO 
20N130W TO 18N140W. SUBTROPICAL JET ON S SIDE OF THE TROUGH FROM 
16N140W TO 20N126W THEN TO 30N116W WITH A TROPICAL MOISTURE FIELD 
STREAMING INTO NRN MEXICO. A 1020 MB HIGH IS CENTERED NEAR 29N129W. 
WINDS AND SEAS ARE INCREASING IN FAR NW PORTION IN ADVANCE OF STORM 
SYSTEM N OF THE AREA. WEAK COLD FRONT BRUSHES PAST THIS AREA TODAY.

FARTHER SOUTH...UPPER RIDGING OVER ITCZ AXIS IS ENHANCING CONVECTIVE 
ACTIVITY E OF 100W. QUIKSCAT PASS THU EVENING SHOWED SMALL AREA OF
25-35 KT WINDS NEAR THE COAST IN GULF OF TEHUANTEPEC. A GALE WARNING 
IS IN EFFECT...BUT NOT LIKELY TO LAST VERY LONG...12-18 HOURS...WITH 
WIND FIELD EXPANDING A BIT TO THE SW AS SURGE CONTINUES FROM SW GULF 
OF MEXICO. WINDS DIMINISH BELOW GALE FORCE THIS AFTERNOON THEN BELOW 
20 KT BY SAT EVENING.

$$
MUNDELL