000
AXPZ20 KNHC 092125
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC WED SEP 09 2009

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

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY
THROUGH 2100 UTC.

...SPECIAL FEATURE...

THE CENTER OF TROPICAL STORM LINDA AT 09/2100 UTC IS NEAR
16.7N 129.0W...OR ABOUT 1310 MILES/2110 KM TO THE WEST-SOUTHWEST
OF THE SOUTHERN TIP OF BAJA CALIFORNIA. LINDA IS MOVING 
NORTHWEST 3 KT. THE MAXIMUM SUSTAINED WIND SPEEDS ARE 
60 KT WITH GUSTS TO 75 KT. THE ESTIMATED MINIMUM CENTRAL 
PRESSURE IS 990 MB. PLEASE READ THE LATEST NHC FORECAST/ADVISORY 
UNDER AWIPS/WMO HEADERS MIATCMEP5/WTPZ25 KNHC AND THE PUBLIC 
ADVISORY UNDER TCPEP5/WTPZ35 KNHC FOR MORE DETAILS. TROPICAL 
STORM FORCE WINDS EXTEND OUTWARD UP TO 125 MILES/205 KM FROM THE 
CENTER. STRONG SHOWERS AND THUNDERSTORMS ARE FROM 16N TO 18N 
BETWEEN 128W AND 130W.

...TROPICAL WAVE...

A TROPICAL WAVE IS ALONG 87W/88W TO THE SOUTH OF 17N MOVING
WEST 10 TO 15 KT. NO DEEP CONVECTIVE PRECIPITATION JUST IS 
ASSOCIATED WITH THIS WAVE.

...THE ITCZ...

08N78W 10N97W 09N114W 13N125W...12N131W 09N140W. STRONG SHOWERS 
AND THUNDERSTORMS ARE WITHIN 60 NM ON EITHER SIDE OF THE AXIS 
BETWEEN 80W AND 82W...AND FROM 12N TO 14N BETWEEN 102W AND 104W. 
ISOLATED TO WIDELY SCATTERED MODERATE SHOWERS AND POSSIBLE 
THUNDERSTORMS ARE ELSEWHERE WITHIN 120 NM TO 240 NM ON EITHER
SIDE OF THE REST OF THE ITCZ.

...DISCUSSION...

A MIDDLE LEVEL TO UPPER LEVEL TROUGH PASSES THROUGH 34N126W TO 
30N127W 28N130W TO 23N135W TO 17N140W. NO DEEP CONVECTIVE 
PRECIPITATION ACCOMPANIES THIS TROUGH.

A MIDDLE LEVEL TO UPPER LEVEL INVERTED TROUGH IS ALONG 98W/99W
TO THE SOUTH OF 15N. THIS TROUGH SPANS THE ITCZ...AND IT IS
POSSIBLE THAT ITS PRESENCE IS ENHANCING SOME OF THE ITCZ 
PRECIPITATION.

ISOLATED MODERATE SHOWERS ARE IN AN AREA OF A FEW CELLS
FROM 16N TO 18N BETWEEN 105W AND 106W...POSSIBLY ENHANCED BY 
UPPER LEVEL DIFFLUENT FLOW ESPECIALLY FOR THE PRECIPITATION THAT 
IS BETWEEN 92W AND 94W.

$$
MT