000
AXPZ20 KNHC 220301
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC SUN AUG 22 2010

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

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0230 UTC.

...SPECIAL FEATURES...

AT 22/0300 UTC...TROPICAL DEPRESSION EIGHT-E IS CENTERED NEAR 
21.1N 112.6W MOVING W-NW OR 290 DEGREES AT 6 KT. ESTIMATED 
MINIMUM CENTRAL PRESSURE IS 1005 MB. MAXIMUM SUSTAINED WINDS ARE 
25 KT WITH GUSTS TO 35 KT. SEE LAST NHC FORECAST/ADVISORY UNDER 
AWIPS/WMO HEADERS MIATCMEP3/WTPZ23 KNHC FOR MORE DETAILS. NO 
SIGNIFICANT CONVECTION IS NOTED. AT THIS TIME...THE LAST 
ADVISORY WAS ISSUED BY THE NATIONAL HURRICANE CENTER ON THIS 
SYSTEM.

AT 22/0300 UTC...TROPICAL DEPRESSION NINE-E IS CENTERED NEAR 
13.8N 93.8W MOVING WEST OR 270 DEGREES AT 3 KT. ESTIMATED 
MINIMUM CENTRAL PRESSURE IS 1006 MB. MAXIMUM SUSTAINED WINDS ARE 
30 KT WITH GUSTS TO 40 KT. SEE LATEST NHC FORECAST/ADVISORY 
UNDER AWIPS/WMO HEADERS MIATCMEP4/WTPZ24 KNHC FOR MORE DETAILS. 
THERE IS SCATTERED MODERATE AND ISOLATED STRONG CONVECTION 
WITHIN 90 NM NE...120 NM SE...AND 210 NM SW AND W QUADRANTS OF 
CENTER. ENVIRONMENTAL CONDITIONS APPEAR CONDUCIVE FOR 
DEVELOPMENT...AND THE DEPRESSION IS FORECAST TO BECOME A 
HURRICANE IN 48-60 HOURS.  

...ITCZ...

THE INTERTROPICAL CONVERGENCE ZONE AXIS IS ALONG 10N110W TO 
11N121W TO 13N126W THEN 11N129W TO 10N135W TO 11N140W. NO 
SIGNIFICANT CONVECTION IS NOTED.

...DISCUSSION...

AN UPPER LEVEL ANTICYCLONE IS CENTERED OVER SOUTH CENTRAL NEW 
MEXICO NEAR 32N107W WITH AN UPPER RIDGE EXTENDING SW ACROSS THE 
NORTHERN BAJA PENINSULA TO 30N120W TO 18N140W. VERY DRY AIR 
UNDER MODERATE TO STRONG SUBSIDENCE ARE INDICATED BY WATER VAPOR 
SATELLITE IMAGERY MAINLY N OF 16N AND W OF 125W. AN INVERTED 
TROUGH WITH AN AXIS EXTENDING FROM 25N113W TO 13N118W HAS MID TO 
UPPER LEVEL MOISTURE E OF THE ABOVE MENTIONED DRY AIR AREA E TO 
MEXICO. ANOTHER UPPER LEVEL ANTICYCLONE IS POSITIONED NEAR 
09N113W WITH AN UPPER RIDGE EXTENDING TO A COL NEAR 02N122W. AN 
UPPER RIDGE AXIS EXTENDS FROM W OF THE DISCUSSION AREA ALONG 04N 
TO THE COL. OTHERWISE...ZONAL/NE TO E FLOW PREVAILS OVER THE 
REMAINDER OF THE DEEP TROPICS WITH ADDITIONAL SIGNIFICANT MID TO 
UPPER LEVEL MOISTURE NOTED N OF 05N AND E OF 113W.  

AT THE SURFACE...A SURFACE RIDGE STEMS FROM 1029 MB HIGH PRES 
CENTERED WELL NW OF THE AREA NEAR 41N156W ENTERING THE 
DISCUSSION AREA NEAR 32N137W TO 22N120W. A 1011 MB AREA OF LOW 
PRES IS POSITIONED NEAR 12N128W WITH SCATTERED MODERATE 
CONVECTION WITHIN 90 NM IN THE W QUADRANT OF LOW CENTER. A 1840 
UTC ASCAT PASS INDICATED 20 TO 25 KT WINDS WITHIN 210 NM IN THE 
SE AND S QUADRANTS OF THE LOW CENTER WITH COMBINED SEAS OF 8 TO 
10 FT IN S SWELL. THE LOW IS EXPECTED TO RETROGRADE TO THE E TO 
A POSITION NEAR 13N127W IN 24 HOURS THEN SHOULD DISSIPATE 
THEREAFTER.

CROSS EQUATORIAL S AND SW SWELL CONTINUES TO AFFECT THE SE 
WATERS WITH COMBINED SEAS OF 8-11 FT REACHING FROM THE CENTRAL 
MEXICO COAST SE ACROSS ALL OF COASTAL CENTRAL AMERICA AND 
COLOMBIA AND NORTHERN ECUADOR.

$$
LEWITSKY