Japan faces an uphill battle in creating the systems and finding the people it needs to plug these vulnerabilities, officials and experts say
The quake struck 60 km northwest of Manila at a depth of 40 km. The USGS initially said the magnitude was 6.4 but later downgraded it slightly.
There were no immediate reports of casualties or damage. Some people evacuated their offices in Manila.
The Philippines is on the seismically active Pacific "Ring of Fire", a horse-shoe shaped band of volcanoes and fault lines circling the edges of the Pacific Ocean.