Hurricane Danny made its first landfall, just northwest of the Mississippi River delta near the towns of Empire and Buras, early on 18 July. Danny was a very small hurricane, and significant effects were confined to the area immediately around the eye. Reports from the Hurricane Hunters indicated a radius of maximum winds of eight or nine n mi. Communities from Port Sulphur southeastward to Venice, Louisiana probably experienced hurricane force winds (the Venice ASOS site lost power after reporting wind gusts to 38 knots a couple of hours before the closest approach of the hurricane's center).
After passing over extreme southeastern Louisiana, the center of Danny was back over the Gulf of Mexico, south of the coast of Mississippi, during the day on 18 July. There was a little more strengthening, and Danny reached its peak intensity of 70 knots with a minimum central pressure of 984 mb. The slow-moving hurricane wobbled to the east, then north-northeastward, bringing the eye to the mouth of Mobile Bay, near Fort Morgan, Alabama, just before dawn on the 19th. The eyewall and western edge of the eye passed over Dauphin Island, where sustained hurricane-force winds and torrential rains were experienced. After drifting over extreme southern Mobile Bay, the center plodded eastward, practically stalled, and finally crossed the coast on the southeast shore of the bay near Mullet Point, Alabama around midday on the 19th. Danny continued to move erratically, toward the southeast over extreme southeast Alabama, while weakening to a tropical storm by 0000 UTC on the 20th. The weakening cyclone then turned northward, passing over the extreme northwest Florida panhandle. Danny, weakened to a depression by 1800 UTC on the 20th, moved north to northeastward over Alabama for two days.
Satellite images showed that Danny, although very weak at the surface, still had a well-defined cyclonic cloud signature as it moved eastward over northern Georgia and South Carolina on 22-23 July. The low pressure system moved east-northeastward over North Carolina on the morning of the 24th. Around midday, as the center neared the Atlantic seaboard near the North Carolina/Virginia border, the cyclone began strengthening -- while accelerating in forward speed. The fact that Danny was re-intensifying while still partially over land suggests that it may have been deriving energy from a baroclinic source. A front was situated just to the north of the cyclone around this time. Winds around Danny were already back to tropical storm force as the center moved back over water around 1900 UTC on the 24th.
Just when it looked as if it were racing safely away from the coast, the storm turned north-northeastward, and slowed dramatically, as it appeared to be drawn in toward a middle- to upper-tropospheric cyclone over the northeastern United States. This motion brought Danny to about 25 n mi southeast of Nantucket Island, Massachusetts, around 0000 UTC 26 July. After buffeting southeastern Massachusetts, Danny lost its remaining tropical characteristics, and turned out to sea -- for good. The cyclone was absorbed in a frontal zone over the north Atlantic by 1800 UTC on 27 July.