000
AXPZ20 KNHC 060919
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC THU AUG 06 2009

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...
HURRICANE FELICIA NEAR 15.5N 131.2W WITH MINIMUM CENTRAL 
PRESSURE OF 937 MB AT 0900 UTC MOVING WNW OR 300 DEG AT 9 KT. 
MAXIMUM SUSTAINED WINDS ARE 120 KT WITH GUSTS TO 145 KT. 
NUMEROUS STRONG CONVECTION IS 80 NM NE AND 120 NM SW 
SEMICIRCLES. A WELL DEFINED LARGE EYE...ABOUT 20 NM...IS 
OBSERVED. FELICIA IS FORECAST TO SLOWLY DECREASE. THE SYSTEM IS 
FORECAST TO CONTINUE TO MOVE NW. SEE LATEST NHC 
FORECAST/ADVISORY UNDER AWIPS/WMO HEADERS MIATCMEP3/WTPZ23 KNHC 
FOR MORE DETAILS.

TROPICAL STORM ENRIQUE NEAR 20.7N 125.9W WITH MINIMUM CENTRAL 
PRESSURE OF 1000 MB AT 0900 UTC MOVING NW OR 310 DEG AT 15 KT. 
MAXIMUM SUSTAINED WINDS ARE 45 KT WITH GUSTS TO 55 KT. NUMEROUS 
MODERATE TO STRONG CONVECTION IS WITHIN 90 NM SE SEMICIRCLE AND 
60 NM NW SEMICIRCLE. ENRIQUE IS FORECAST TO WEAKEN TO A TROPICAL 
DEPRESSION THU NIGHT AND BECOME A REMNANT LOW FRI. SEE LATEST 
NHC FORECAST/ADVISORY UNDER AWIPS/WMO HEADERS MIATCMEP2/WTPZ22 
KNHC FOR MORE DETAILS.

...TROPICAL WAVES...
TROPICAL WAVE HAS ENTERED THE AREA FROM THE E AND IS N OF 8N 
ALONG 84W MOVING W 15 KT. JUST A FEW SHOWERS ARE ALONG THE
WAVE.

TROPICAL WAVE FROM 4N-16N ALONG 113W MOVING W 10-15 KT. 
SCATTERED MODERATE TO STRONG CONVECTION IS WITHIN 180 NM N OF 
THE ITCZ AND ABOUT 250 NM W OF THE WAVE.

...ITCZ...
AXIS IS ALONG 8N78W 8N110W 11N130W 7N140W. SCATTERED STRONG 
CONVECTION FROM 3N-6N BETWEEN 80W-86W. SCATTERED MODERATE TO 
STRONG CONVECTION WITHIN 180 NM N OF AXIS FROM 114W-119W. 

...DISCUSSION...
UPPER LEVEL TROUGH OVER THE FAR NW PORTION OF THE DISCUSSION 
AREA EXTENDS FROM 32N127W TO 28N140W. A 75-95 KT JETSTREAM IS E 
OF THE TROUGH AXIS FROM 30N129W TO BEYOND 32N123W. AN UPPER 
LEVEL ANTICYCLONIC CIRCULATION IS SE OF THE TROUGH NEAR 26N120W. 
DIVERGENT FLOW ALOFT BETWEEN THE ANTICYCLONIC CIRCULATION AND AN 
UPPER LEVEL CYCLONIC CIRCULATION OVER THE FAR W PORTION OF THE 
DISCUSSION AREA CENTERED NEAR 15N133W IS ENHANCING CONVECTION 
OVER FELICIA.

ANOTHER UPPER LEVEL ANTICYCLONIC CIRCULATION OVER NORTHERN MEXICO
NEAR 28N107W. EARLIER CONVECTION OVER NORTHERN MEXICO HAS
DISSIPATED. A WEAK UPPER TROUGH EXTENDS FROM THE BAY OF CAMPECHE 
ACROSS SOUTHERN MEXICO TO 17N110W. AN UPPER LEVEL ANTICYCLONIC 
CIRCULATION IS NOTED S OF THE TROUGH NEAR 13N101W. DIFFLUENT 
FLOW ALOFT SE OF THE ANTICYCLONIC CIRCULATION IS AIDING 
CONVECTIVE ACTIVITY ALONG THE ITCZ AND ALONG OFF THE COAST OF EL 
SALVADOR.

SURFACE RIDGE WITH AXIS FROM 32N139W TO 28N117W. SURFACE TROUGH
IS ANALYZED FROM THE YUCATAN PENINSULA TO THE COAST OF EL 
SALVADOR. NUMEROUS STRONG CONVECTION IS WITHIN 180 NM OF THE
COAST OF EL SALVADOR. NE WINDS 20 KT CONTINUE TO BLOW THROUGH 
GULF OF PAPAGAYO.

$$
DGS