000
AXPZ20 KNHC 052203
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC MON SEP 05 2011

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS 
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND 
METEOROLOGICAL ANALYSIS.

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY
THROUGH 2130 UTC.

...ITCZ/MONSOON TROUGH...
THE MONSOON TROUGH PASSES THROUGH THE GULF OF URABA ALONG THE 
COLOMBIA COAST...ACROSS PANAMA NEAR 9N80W...ACROSS NORTHWESTERN 
COSTA RICA TO 15N104W 11N125W 11N140W. STRONG CONVECTIVE 
PRECIPITATION IS WITHIN A 30 NM RADIUS OF 18N106W. SCATTERED 
MODERATE TO ISOLATED STRONG CONVECTIVE PRECIPITATION IS FROM 8N 
TO 12N BETWEEN 98W AND 110W. WIDELY SCATTERED MODERATE TO 
ISOLATED STRONG CONVECTIVE PRECIPITATION IS FROM 14N TO 17N 
BETWEEN MEXICO AND 107W. ISOLATED MODERATE CONVECTIVE 
PRECIPITATION IS FROM 9N TO 14N BETWEEN 110W AND 140W.

...DISCUSSION...

UPPER LEVEL CYCLONIC WIND FLOW COVERS THE CARIBBEAN SEA AND THE 
EASTERN PACIFIC OCEAN TO THE NORTH OF 10N BETWEEN 77W NEAR 
JAMAICA AND 94W IN THE EASTERN PACIFIC OCEAN. THIS FLOW SPANS 
THE AREA FROM SOUTHEASTERN MEXICO...INCLUDING THE YUCATAN 
PENINSULA...TO NORTHERN COSTA RICA...AND A SMALL PART OF THE 
EASTERN PACIFIC OCEAN.

UPPER LEVEL ANTICYCLONIC WIND FLOW COVERS THE AREA THAT IS TO 
THE NORTH OF 20N BETWEEN MEXICO AND 123W.

UPPER LEVEL CYCLONIC FLOW MOVES INTO THE NORTHWESTERN CORNER OF 
THE AREA...TO THE NORTH OF 27N BETWEEN 125W AND 140W. 

BROAD AND COMPARATIVELY WEAK SURFACE ANTICYCLONIC WIND FLOW 
COVERS THE AREA THAT IS TO NORTH OF 25N TO THE WEST OF 120W.
THE SURFACE PRESSURE PATTERN IS COMPARATIVELY WEAK AND THE TRADE 
WINDS ARE BLOWING AT LESS THAN 20 KT ACROSS THE AREA. LONG 
PERIOD CROSS EQUATORIAL SWELL CONTINUES TO DOMINATE THE AREA TO 
THE SOUTH OF 15N BETWEEN 90W AND 125W...AND TO THE SOUTH OF 7N 
BETWEEN 80W AND 87W...WITH SEA HEIGHTS RANGING FROM 8 TO 10 FT.

$$
MT