000
AXPZ20 KNHC 172050
TWDEP 

TROPICAL WEATHER DISCUSSION     
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC SAT MAR 17 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 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2045 UTC.

...ITCZ...

ITCZ AXIS 3N78W 4N100W 21N140W. 6N77W 4N100W 5N110W 3N140W. 
SCATTERED MODERATE 80 NM WIDE 105W TO 116W.


...DISCUSSION...
 
UPPER LEVEL...
DEEP TROUGH W OF THE AREA IS MOVING E 15 TO 20 KT. A SHORTWAVE 
TROUGH N OF 27N HAS ENTERED MEXICO.E. EXTENSIVE TROPICAL 
MOISTURE IS W OF 120W AND BEING ADVECTED INTO BAJA CALIFORNIA 
AND NW MEXICO. A RIDGE EXTENDS E OF THE TROUGH TO 90W. STRONG SW 
WINDS IN THE 60 TO 70 KT RANGE ARE WITHIN 240 NM OF A LINE 
19N120W TO 27N107W. DRY UPPER AIR IS INDICATED E OF 120W. AN 
UPPER LEVEL RIDGE EXTENDS FROM SOUTHERN MEXICO 
TO AN ANTICYCLONIC CIRCULATION NEAR 7N92W. DRY AIR COVERS THE 
AREA N OF THE ITCZ AND E OF 10-5W.

SURFACE...
A BROAD RIDGE DOMINATES THE AREA WITH THE AXIS FROM 32N130W TO 
19N114W.
A TROUGH WITH SCATTERED CONVECTION WITHIN 80 NM OF THE AXIS IS 
FROM 6N113W TO 11N113W.

A GALE EVENT ITEHUANTEPEC  WITH  N TO NE WINDS 30 TO 35 KT SEAS 
8 TO 12 FT WILL END IN 24 HOURS.

$$
FETT