JAKARTA, Indonesia (CNN) — Less than a day after being rocked by a deadly earthquake, people on the Indonesian island of Sumatra were jolted again Thursday morning by a pair of powerful tremors that prompted the Indonesian government to issue additional tsunami warnings.
Residents in other Indian Ocean nations also were put on notice about the possibility of tsunami waves. Most of those watches were later dropped, although a watch remained in effect for Indonesia.
The 7.8-magnitude earthquake struck about 6:45 a.m. (1145 GMT), according to the U.S. Geological Survey. The epicenter was about 185 kilometers (115 miles) south-southeast of Padang and about 210 km northwest of Bengkulu.
About four hours later, the USGS reported that a 7.1-magnitude quake had rocked the region. Sandwiched in-between were half a dozen temblors measuring 5.0 and above.
The quakes came just 12 hours after Indonesia had been rocked by an 8.4-magnitude earthquake that killed at least nine people, and generated a small tsunami about 61 centimeters (2 feet) high along the Sumatran coast.
(Emphasis mine.)
The first quake hit at about 6:10 p.m. local time yesterday, and even people here in Bangkok reported that tall buildings were shaken.