000
AXPZ20 KNHC 290923
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SUN AUG 29 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.

...SPECIAL FEATURES...
THE REMNANT LOW OF FORMER TROPICAL CYCLONE FRANK WAS CENTERED 
NEAR 21N112W WITH JUST A SWIRL OF LOW CLOUDS. THERE IS NO 
CONVECTION CURRENTLY ASSOCIATED WITH THE LOW WHICH IS FORECAST 
TO DRIFT N-NE AND DISSIPATE TONIGHT.

...ITCZ...
AXIS IS ALONG 12N86W 14N95W 12N105W 11N140W. SCATTERED MODERATE 
TO STRONG  WITHIN 150 NM N OF AXIS FROM 97W-103W.

...DISCUSSION...
AN UPPER LEVEL ANTICYCLONIC CIRCULATION OVER THE WESTERN PORTION 
OF THE DISCUSSION AREA IS CENTERED NEAR 24N134W. A BROAD UPPER 
LEVEL TROUGH IS NE OF THE ANTICYCLONIC CIRCULATION...N OF 26N 
BETWEEN 115W AND 125W. MODERATE TO STRONG SUBSIDENCE WITH DRY 
STABLE AIR AT THE MIDDLE AND UPPER LEVELS OF THE ATMOSPHERE IS 
COVERING A LARGE PORTION OF THE AREA N OF THE ITCZ W OF 115W.
ANOTHER UPPER LEVEL ANTICYCLONIC CIRCULATION IS CENTERED NEAR 
THE NE COAST OF MEXICO WITH RIDGE EXTENDING FROM THE 
ANTICYCLONIC CIRCULATION TO THE SOUTHERN TIP OF BAJA THEN SW TO 
15N121W. UPPER LEVEL DIFFLUENT FLOW TO THE S OF THE ANTICYCLONE 
IS ENHANCING CONVECTION OVER THE COASTAL AREAS OF MEXICO S OF 
20N WITH SCATTERED MODERATE TO STRONG CONVECTION NOTED WITHIN 
300 NM OF THE COAST BETWEEN 96W AND 103W. 

THE REMNANT LOW OF FRANK IS PRODUCING 20-25 KT WINDS WITHIN 120 
N OF THE CENTER...HOWEVER THESE WINDS WILL DECREASE AS FRANK 
DISSIPATES WITHIN THE NEXT 24 HOURS. OTHERWISE MODERATE TO 
STRONG SW WINDS ACROSS THE AREA S OF AROUND 13N BETWEEN 90W-110W.
THESE WINDS ARE FORECAST TO CONTINUE THROUGH THE NEXT 48 HOURS.

A NEW SURGE OF CROSS-EQUATORIAL SWELL OF 15 TO 17 SECONDS IS 
MOVING NORTHWARD ACROSS THE FORECAST WATERS S OF 10N E OF 117W. 
THESE SWELLS WILL ARRIVE ON THE COAST OF MEXICO AND CENTRAL 
AMERICA TONIGHT.

$$
DGS