Miami — The National Hurricane Center said Friday morning that Subtropical Depression 10 had formed in the northeastern Gulf of Mexico, and forecasters posted a tropical storm warning from Apalachicola, Fla., west to the mouth of the Mississippi River, including New Orleans and Lake Pontchartrain in Mississippi.

The center said that at 11 a.m. EDT, the poorly defined center of the weather system was near latitude 29.2 degrees north and longitude
85.5 degrees west, or about 45 miles southwest of Apalachicola and about 185 miles east-southeast of Mobile, Ala.

The depression was moving toward the northwest near 8 mph, the Hurricane Center said. Forecasters expected it to turn to
the west-northwest and move nearly parallel to the gulf coastline Friday and Friday night.

Maximum sustained winds were near 35 mph. Forecasters said the depression could become a subtropical or tropical storm later Friday.