Based on observations from satellites, webcams, pilots, and the Vanuatu Geohazards Observatory (local community reports), the Wellington VAAC reported that during 11-14 April ash plumes from the vent at Ambae?s Lake Voui rose to altitudes of 1.8-4.9 km (6,000-16,000 ft) a.s.l.
and drifted N, NW, W, and SE.
On 12 April news articles noted that ashfall had affected the N part of Ambae, with photos showing thick ashfall deposits on houses and agricultural land, and reports of contaminated water supplies.
On 15 April a VAAC office reported that the eruption has ceased.
The Alert Level remained at 3 (on a scale of 0-5).
Sources: ABC News - Australian Broadcasting Corporation,Wellington Volcanic Ash Advisory Center (VAAC)