Data e Ora (UTC) Magnitudo Zona
1990-10-21 13:44:22 Md 2.5 3 km SE Montelparo (FM)
1990-10-22 23:00:11 Md 2.8 2 km S Controguerra (TE)
1990-10-24 13:15:04 Md 2.3 3 km NW Montedinove (AP)
1990-10-24 18:48:33 Md 2.7 2 km NW Montedinove (AP)
1990-10-25 09:56:17 Md 2.2 2 km W Sarnano (MC)
1990-11-18 19:11:33 Md 2.5 2 km N Rotella (AP)
1990-12-20 03:46:32 Md 2.6 3 km W Falerone (FM)
1991-01-26 19:53:10 Md 2.5 6 km NW Cortino (TE)
1991-01-26 20:01:02 Md 2.4 6 km W Rocca Santa Maria (TE)
1991-03-17 13:36:10 Md 2.7 NE Montalto delle Marche (AP)
1991-03-20 18:56:38 Md 2.6 3 km E Bolognola (MC)
1991-03-23 18:55:23 Md 2.9 2 km SE Monsampolo del Tronto (AP) ... (AP)
1991-04-27 04:16:14 Md 2.4 5 km N Acquasanta Terme (AP)
1991-05-11 11:46:23 Md 2.8 4 km NW Monsampolo del Tronto (AP) ... (AP)
1991-05-22 14:31:27 Md 2.5 4 km SE Norcia (PG)
1991-07-12 12:05:30 Md 3.2 S Corropoli (TE)
1991-07-16 09:07:34 Md 2.1 3 km SE San Ginesio (MC)
1991-07-17 02:55:16 Md 2.9 3 km W Monteleone di Fermo (FM)
1991-07-20 09:19:07 Md 2.0 4 km S Bolognola (MC)
1991-07-21 05:45:21 Md 2.4 2 km NW Monteleone di Fermo (FM)
1991-07-23 22:16:17 Md 2.8 3 km N Santa Vittoria in Matenano (FM) ... (FM)
1991-07-24 01:15:41 Md 2.4 2 km SE Servigliano (FM)
1991-07-25 18:50:51 Md 2.2 3 km E Venarotta (AP)
1991-07-25 21:45:44 Md 2.5 3 km W Monteleone di Fermo (FM)
1991-07-27 04:20:53 Md 2.1 3 km NW Santa Vittoria in Matenano (FM) ... (FM)
1991-08-06 11:31:02 Md 3.0 2 km W Servigliano (FM)
1991-09-04 03:21:15 Md 2.4 1 km NE Monte Rinaldo (FM)
1991-09-05 23:19:09 Md 3.0 7 km W Cortino (TE)
1991-11-12 21:45:55 Md 3.1 3 km SW Comunanza (AP)
1991-11-12 22:55:40 Md 2.4 3 km NE Montemonaco (AP)