Origin time (UTC) Magnitude Region
1990-04-20 12:34:00 Md 2.3 2 km E San Polo dei Cavalieri (RM) ... (RM)
1990-05-01 07:16:56 Md 2.3 3 km SE Pereto (AQ)
1990-05-09 05:16:50 Md 1.9 5 km NW Colonna (RM)
1990-05-17 05:53:44 Md 1.9 7 km NE Roma (RM)
1990-06-06 02:26:53 Md 1.9 1 km NW Frascati (RM)
1990-06-10 03:18:29 Md 2.2 1 km S San Cesareo (RM)
1990-06-11 19:23:31 Md 2.2 2 km W Labico (RM)
1990-06-16 10:05:09 Md 2.8 3 km NW Licenza (RM)
1990-06-19 02:42:58 Md 3.4 E Cineto Romano (RM)
1990-06-19 16:29:15 Md 3.4 4 km NE Marcellina (RM)
1990-06-26 01:38:06 Md 2.1 5 km W Paliano (FR)
1990-07-01 04:10:28 Md 2.4 1 km SE Rocca Priora (RM)
1990-07-11 05:37:54 Md 2.3 4 km N Lariano (RM)
1990-07-29 03:06:04 Md 2.0 3 km NW Colonna (RM)
1990-08-24 09:51:09 Md 2.6 1 km W Rocca Priora (RM)
1990-09-14 13:09:23 Md 2.3 6 km N Ciampino (RM)
1990-09-14 13:10:04 Md 2.2 1 km SW Rocca Priora (RM)
1990-09-14 13:37:29 Md 2.3 6 km S Guidonia Montecelio (RM)
1990-09-15 22:39:24 Md 2.3 SW Percile (RM)
1990-09-20 23:57:33 Md 1.9 3 km N Ciampino (RM)
1990-10-29 22:26:47 Md 2.2 2 km SE Zagarolo (RM)
1990-11-25 18:28:00 Md 2.3 4 km S Tivoli (RM)
1990-11-26 14:48:43 Md 2.7 5 km SW Sante Marie (AQ)
1990-12-10 18:42:16 Md 2.9 2 km NE Cineto Romano (RM)
1991-01-04 21:15:51 Md 2.6 1 km W Orvinio (RI)
1991-01-09 00:14:44 Md 2.2 1 km W San Cesareo (RM)
1991-01-12 03:47:47 Md 1.9 1 km E Oricola (AQ)
1991-01-13 05:39:45 Md 2.4 2 km SE Frascati (RM)
1991-01-19 04:00:54 Md 2.6 1 km SW Pozzaglia Sabina (RI)
1991-01-26 04:56:38 Md 2.7 2 km NE Marano Equo (RM)