Situation Report #4 (as of 17 September 2018) CHRONOLOGICAL SUMMARY On September 15, 2018, at about 1AM, Typhoon Ompong (International Code Name Mangkhut) passed through the Ilocos region. Around 10 AM, the eye of the typhoon started traversing across Ilocos Norte and nearby provinces of Ilocos Sur. As of 12 NN of the same day,...