Origin time (ITItaly) Magnitude Region
1990-02-21 22:02:38 Md 2.1 4 km NW Colonna (RM)
1990-03-12 12:09:10 Md 2.7 2 km E Borgorose (RI)
1990-03-14 19:18:05 Md 2.7 3 km N Torre Cajetani (FR)
1990-04-04 16:42:12 Md 2.1 7 km NW Colonna (RM)
1990-04-04 23:15:34 Md 2.1 6 km W Gallicano nel Lazio (RM)
1990-04-06 07:06:05 Md 2.2 5 km NW Colonna (RM)
1990-04-20 14:34:00 Md 2.3 2 km E San Polo dei Cavalieri (RM) ... (RM)
1990-05-01 09:16:56 Md 2.3 3 km SE Pereto (AQ)
1990-05-09 07:16:50 Md 1.9 5 km NW Colonna (RM)
1990-05-24 13:09:50 Md 2.2 3 km N Cappadocia (AQ)
1990-05-29 22:52:02 Md 2.2 4 km SW Trevi nel Lazio (FR)
1990-06-03 15:54:11 Md 2.3 4 km NW Magliano de' Marsi (AQ)
1990-06-10 05:18:29 Md 2.2 1 km S San Cesareo (RM)
1990-06-11 21:23:31 Md 2.2 2 km W Labico (RM)
1990-06-16 12:05:09 Md 2.8 3 km NW Licenza (RM)
1990-06-19 04:42:58 Md 3.4 E Cineto Romano (RM)
1990-06-19 18:29:15 Md 3.4 4 km NE Marcellina (RM)
1990-06-21 12:39:39 Md 3.2 2 km NE Torre Cajetani (FR)
1990-06-26 03:38:06 Md 2.1 5 km W Paliano (FR)
1990-07-11 07:37:54 Md 2.3 4 km N Lariano (RM)
1990-07-29 05:06:04 Md 2.0 3 km NW Colonna (RM)
1990-09-14 15:37:29 Md 2.3 6 km S Guidonia Montecelio (RM)
1990-09-16 00:39:24 Md 2.3 SW Percile (RM)
1990-10-29 23:26:47 Md 2.2 2 km SE Zagarolo (RM)
1990-11-25 19:28:00 Md 2.3 4 km S Tivoli (RM)
1990-11-26 15:48:43 Md 2.7 5 km SW Sante Marie (AQ)
1990-12-01 16:35:34 Md 2.7 2 km E Acuto (FR)
1990-12-08 19:35:26 Md 2.7 4 km W Trevi nel Lazio (FR)
1990-12-10 19:42:16 Md 2.9 2 km NE Cineto Romano (RM)
1991-01-04 22:15:51 Md 2.6 1 km W Orvinio (RI)