I checked all the online media in Iquique; they were either offline or displaying pre-quake websites. So I've gone to La Tercera in Santiago, which is liveblogging the aftermath: Minuto a minuto: extienden por seis horas más alerta de tsunami en el borde costero de Chile. [Minute by minute: tsunami alert on Chilean coast extended for six hours.]
Rather than translate the text, here's a quick selection of items:
Minister Peñalillo reports massive escape of 300 convicts from Iquique jail.
Minister says school authorities are asked to decide region by region on school suspensions in all evacuation zones.
Onemi, the Chilean disaster agency, says telecommunications are operating (well maybe not so much in Iquique tonight).
Bio Bio Hospital is functioning on emergency lighting. (photo)
Downtown Valparaiso completely evacuated. (photo)
Seven aftershock so far recorded in Cuya: three in Iquique, three in Alto Hospicio and one in Cuya. Strongest was 5.4.