000
ABNT20 KNHC 181134
TWOAT 

TROPICAL WEATHER OUTLOOK
NWS NATIONAL HURRICANE CENTER MIAMI FL
800 AM EDT SUN SEP 18 2011

FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO...

A BROAD AREA OF LOW PRESSURE LOCATED OVER THE CENTRAL TROPICAL
ATLANTIC ABOUT MIDWAY BETWEEN THE LESSER ANTILLES AND THE WEST
COAST OF AFRICA CONTINUES TO PRODUCE A LARGE AREA OF DISORGANIZED
SHOWERS AND THUNDERSTORMS. ENVIRONMENTAL CONDITIONS APPEAR
FAVORABLE FOR GRADUAL DEVELOPMENT OF THIS DISTURBANCE OVER THE NEXT
FEW DAYS AS IT MOVES SLOWLY WESTWARD. THIS SYSTEM HAS A LOW
CHANCE...20 PERCENT...OF BECOMING A TROPICAL CYCLONE DURING THE
NEXT 48 HOURS.

AN ELONGATED AREA OF LOW PRESSURE LOCATED ABOUT 300 MILES SOUTH OF
THE CAPE VERDE ISLANDS IS PRODUCING ONLY LIMITED SHOWER AND
THUNDERSTORM ACTIVITY. THIS SYSTEM HAS BECOME LESS ORGANIZED OVER
THE PAST FEW HOURS...AND TROPICAL CYCLONE DEVELOPMENT APPEARS
UNLIKELY. THIS SYSTEM HAS A LOW CHANCE...NEAR 0 PERCENT...OF
BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS AS IT MOVES
WESTWARD AT 10 TO 15 MPH.

SHOWER AND THUNDERSTORM ACTIVITY HAS INCREASED IN ASSOCIATION WITH A
SURFACE TROUGH LOCATED ABOUT 1250 MILES EAST OF THE NORTHERN
LEEWARD ISLANDS. ANY DEVELOPMENT OF THIS SYSTEM IS EXPECTED TO BE 
SLOW TO OCCUR DUE TO UNFAVORABLE UPPER-LEVEL WINDS. THIS SYSTEM HAS
A LOW CHANCE...20 PERCENT...OF BECOMING A TROPICAL CYCLONE DURING
THE NEXT 48 HOURS AS IT MOVES WESTWARD AT 10 TO 15 MPH. 

ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE
NEXT 48 HOURS.

$$
FORECASTER BRENNAN