000
AXPZ20 KNHC 010913
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SAT MAR 01 2008

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 
0845 UTC.
 
...ITCZ...

ITCZ ALONG 8N82W 4N97W 7N120W 5N140W. ISOLATED MODERATE 
CONVECTION NEAR 1N80W AND 1N99W. SCATTERED MODERATE WITHIN 30 NM 
OF A LINE FROM 2N106W TO 5N110W TO 3N120W. SCATTERED MODERATE 
WITHIN 30 NM OF 7N108W. 

OTHER ISOLATED MODERATE CONVECTION NEAR 11N113W 9N113W 5N117W 
7N121W 11N119W AND 11N122W.

...DISCUSSION...

DUAL CENTERED MID LEVEL TROUGH SANDWICHED BETWEEN A RIDGE 
CENTERED NEAR 25N135W AND A FLAT MID LEVEL RIDGE S OF 23N E OF 
120W. THE TROUGH IS WEAKENING ON IT'S SW PORTION AND WATER VAPOR 
IMAGERY SHOWS A WEAK CENTER OF CYCLONIC ROTATION NEAR 22N122W. A 
STRONGER CYCLONIC CENTER WAS NEAR 31N117W MOVING ENE. ON THE 
SURFACE TONIGHT A 1029 MB HIGH ANCHORED THE PACIFIC RIDGE NEAR 
33N140W. THE RIDGE IS PRODUCING NE TRADES OF 20 TO 25 KT S OF 
20N W OF 125W WITH SEAS 9 TO 11 FT. COASTAL WINDS FROM BAJA TO 
TEHUANTEPEC ARE LIGHT N AND NW. GAP WINDS THROUGH PAPAGAYO AND 
PANAMA ARE 15 TO 20 KT ACCORDING TO SSMI IMAGERY. NO QUIKSCAT 
PASS AVAILABLE FOR THOSE AREAS. 

LATER DAY 1 THE MID LEVEL TROUGH WILL CONTINUE TO MOVE SLOWLY 
EWD WITH THE SRN PORTION CONTINUING TO WEAKEN. A MID LEVEL RIDGE 
CENTER WILL DRIFT E TO NEAR 25N133W EFFECTIVELY KEEPING THE 
WESTERLIES AT BAY. ON THE SURFACE LATER DAY 1 THE PACIFIC RIDGE 
STRENGTHENS SOME BUT THE CENTER REMAINS N OF THE AREA. THE RIDGE 
AXIS WILL EXTEND OVER THE AREA FROM 30N130W TO 14N105W. NE WINDS 
20 TO 25 KT WILL CONTINUE S OF 20N W OF 125W. WINDS ALONG THE 
BAJA COAST WILL REMAIN NWLY 10 TO 15 KT. PAPAGAYO WINDS MOSTLY 
NE TO E 15 TO 20 KT. TEHUANTEPEC AND PANAMA WINDS 10 TO 15 KT.

FOR DAY 2 THE NRN CYCLONIC CENTER IN THE MID LEVEL TROUGH GETS 
SWEPT UP BY THE WESTERLIES AND HEADS NE WHILE THE SRN CENTER 
GRADUALLY DISSIPATES NEAR 20N120W. LITTLE CHANGE TO THE MID 
LEVEL RIDGE CENTER WHICH REMAINS NEAR 25N135W. ON THE SURFACE 
DAY 2 A MODERATELY STRONG PACIFIC RIDGE WILL REMAIN IN PLACE. AN 
INCREASE IN NLY WINDS OF 20 TO 25 KT N OF 23N E OF 130W WILL 
SEND NLY SWELL OF 12 TO 15 KT INTO OUR AREA N OF 28N E OF 127W. 
WINDS ALONG THE BAJA COAST REMAIN NWLY 15 KT WITH NW SWELL 6 TO 
8 FT. LITTLE CHANGE TO GAP WINDS. 

$$
RRG