ZCZC MIAWRKAD3 LOC TTAA00 KNHC DDHHMM ...FOR INTERGOVERNMENTAL USE ONLY... TROPICAL STORM ERIKA DISCUSSION NUMBER 10 NATIONAL WEATHER SERVICE MIAMI FL 1130 PM EDT TUE SEP 10 1991 ATTN WSFOS NMC F/D ERIKA IS ON THE EDGE OF GOES AND METEOSAT. IT APPEARS TO BE FAIRLY WELL ORGANIZED WITH WINDS UP TO 50 KT. THE STORM IS MOVING TOWARD THE EAST AT 35 KNOTS BRINGING TROPICAL STORM CONDITIONS OVER THE AZORES EARLY ON WEDNESDAY. ERIKA IS EXPECTED TO BECOME EXTRATROPICAL IN 24 HOURS. AVILA PRELIMINARY PROG POSITIONS AND MAX WINDS INITIAL 11/0400Z 37.1N 35.1W 50 KTS. 12HR VT 11/1200Z 37.8N 29.4W 50 KTS. 24HR VT 12/0000Z 39.0N 21.5W EXTRATROPICAL.