 Before Imbudo struck , officials evacuated over 14 @,@ 000 people to at least 60 shelters . Government offices were closed along the typhoon 's path , and schools were closed in the capital , Manila . PAGASA issued a number 4 warning signal , the highest level , for three northern provinces , indicating the imminent threat of a powerful storm . Despite the warning , a post @-@ storm survey in Isabela province indicated that 34 % were unaware of the storm 's arrival , while others believed the typhoon would not be as strong . In Manila , four flights were canceled at Ninoy Aquino International Airport , and the Manila Light Rail Transit System was shut down for two hours . Travel by ship and bus were halted in some areas . On July 22 before the storm struck , the Philippine military was put on red alert , increasing security at the presidential palace . The military stated it was due to the typhoon , although newspapers suggested it was to prevent a coup attempt ; a failed coup ultimately did occur on July 27 in what would become known as the Oakwood mutiny . 
 Before Imbudo struck , officials evacuated over 14 @,@ 000 people to at least 60 shelters . Government offices <a href='uninflect' title='1'><mark>were</mark></a> closed along the typhoon <a href='null_genetive' title='2'><mark>'s</mark></a>path , and schools <a href='uninflect' title='3'><mark>were</mark></a> closed in the capital , Manila . PAGASA issued a number 4 warning signal , the highest level , for three northern provinces , indicating the imminent threat of a powerful storm . Despite the warning , a post @-@ storm survey in Isabela province indicated that 34 % <a href='uninflect' title='4'><mark>were</mark></a> unaware of the storm <a href='null_genetive' title='5'><mark>'s</mark></a>arrival , while others believed the typhoon would <a href='negative_concord' title='6'><mark>not</mark></a><a href='negative_concord' title='7'><mark>be</mark></a> as strong . In Manila , four flights <a href='uninflect' title='8'><mark>were</mark></a> canceled at Ninoy Aquino International Airport , and the Manila Light Rail Transit System was shut down for two hours . Travel by ship and bus <a href='uninflect' title='9'><mark>were</mark></a> halted in some areas . On July 22 before the storm struck , the Philippine military was put on red alert , increasing security at the presidential palace . The military stated it was due to the typhoon , although newspapers suggested it was to prevent a coup attempt ; a failed coup ultimately did occur on July 27 in what would become known as the Oakwood mutiny . 
Before Imbudo struck , officials evacuated over 14 @,@ 000 people to at least 60 shelters . Government offices was closed along the typhoon  path , and schools was closed in the capital , Manila . PAGASA issued a number 4 warning signal , da highest level , for three northern provinces , indicating the imminent threat of a powerful storm . Despite the warning , a post @-@ storm survey in Isabela province indicated dat 34 % was unaware of the storm  arrival , while others believed the typhoon would ain't as strong . In Manila , four flights was canceled at Ninoy Aquino International Airport , and tdaManila Light Rail Transit System was shut downn fir 2 hours . Travel by ship and bus was halted in sum areas . On July 22 before the storm struck , the Philippine military was put on red alert , increasing security at the presidential palace . Thdailitary stated it was due to the typhoon , although newspapers suggested it was to prevent a coup attempt ; a failed coup ultimately did occur on July 27 in what would become known as the Oakwood mutiny .