An earthquake measuring 4.8 on the Richter Scale hit Pakistan’s Islamabad in the wee hours of Tuesday. According to the details, the earthquake tremors were felt 303km NNW of Islamabad. An earthquake measuring 4.8 on the Richter Scale hit Pakistan’s Islamabad in the wee hours of Tuesday. According to the details, the earthquake tremors were felt 303km NNW of Islamabad.