| Date | Magnitude | Location |
| 1998-12-25 | M=3.6 MN | felt | 25 km SE of Cobourg, ON |
| 1998-12-22 | M=4.4 MN | | 98 km SW of Eureka, NU |
| 1998-12-09 | M=4.0 ML | felt | 71 km SW of Skagway, AK |
| 1998-11-23 | M=3.6 MN | | 94 km SW of Eureka, NU |
| 1998-11-09 | M=4.3 ML | felt | 37 km SE of Yakutat, AK |
| 1998-10-22 | M=4.1 MN | felt | 35 km NW of Sainte-Anne-des-Monts, QC |
| 1998-09-30 | M=4.5 MN | | 222 km SE of Gjoa Haven, NU |
| 1998-09-25 | M=5.4 MN | felt | 95 km NE of Cleveland , OH |
| 1998-09-09 | M=4.6 ML | felt | 117 km NW of Masset, BC |
| 1998-08-30 | M=6.0 Ms | | 223 km NW of Port Hardy, BC |
| 1998-08-18 | M=4.3 MLSn | | 204 km SW of Port Hardy, BC |
| 1998-08-13 | M=3.6 mbLg | | 32 km NE of Lake Louise, AB |
| 1998-08-06 | M=4.5 MLSn | | 216 km SW of Port Alice, BC |
| 1998-08-05 | M=4.4 ML | | 128 km SE of Queen Charlotte City, BC |
| 1998-07-30 | M=4.4 MN | felt | 25 km SE of L'Annonciation, QC |
| 1998-07-15 | M=4.0 MN | felt | 60 km NE of Plaster Rock, NB |
| 1998-07-13 | M=4.3 MLSn | | 220 km SW of Port Alice, BC |
| 1998-06-25 | M=5.3 Mw | | 203 km SW of Port Alice, BC |
| 1998-06-12 | M=4.2 MLSn | | 201 km SW of Port Alice, BC |
| 1998-06-09 | M=3.4 MN | | 22 km NW of Plattsburgh, NY |
| 1998-06-08 | M=5.3 ML | | 139 km NW of Eureka, NU |
| 1998-05-31 | M=3.7 MLSn | | 205 km SW of Port Alice, BC |
| 1998-05-20 | M=4.0 ML | | 68 km NE of Nutak, NL |
| 1998-05-07 | M=3.4 MN | felt | 14 km SE of Temiscaming, QC |
| 1998-05-04 | M=4.3 MLSn | | 193 km NW of Tuktoyaktuk, NT |
| 1998-04-30 | M=3.6 MLSn | | 219 km SW of Port Alice, BC |
| 1998-04-29 | M=4.4 MN | | 216 km SW of Isachsen, NU |
| 1998-04-18 | M=4.1 MN | felt | 27 km SW of Hawkesbury, ON |
| 1998-04-06 | M=4.3 ML | | 112 km NE of Dawson, YT |
| 1998-03-30 | M=3.9 ML | | 23 km SW of Burwash Landing, YT |
| 1998-03-26 | M=4.2 ML | | 66 km NW of Mould Bay, NT |
| 1998-03-25 | M=3.5 MN | | 56 km SW of Sheldrake, QC |
| 1998-03-19 | M=3.0 ML | felt | 31 km SW of Nakusp, BC |
| 1998-03-19 | M=3.2 MN | felt | 17 km NE of Temiscaming, QC |
| 1998-03-18 | M=3.0 ML | felt | 15 km NE of Port Alberni, BC |
| 1998-03-17 | M=4.4 ML | | 368 km SE of Louisbourg, NS |
| 1998-03-11 | M=4.1 MN | | 178 km NE of Polaris, NU |
| 1998-03-02 | M=3.6 ML | felt | 16 km NE of Grand Forks, BC |
| 1998-02-26 | M=3.7 MN | felt | 24 km SW of Gracefield, QC |
| 1998-02-14 | M=4.6 MLSn | | 45 km SE of Mould Bay, NT |
| 1998-02-13 | M=3.9 ML | | 212 km NW of Port Hardy, BC |
| 1998-02-08 | M=3.9 MLSn | | 198 km SW of Port Hardy, BC |
| 1998-01-21 | M=5.1 ML | | 454 km NE of Nutak, NL |
| 1998-01-09 | M=3.6 MN | felt | 17 km SW of La Baie, QC |