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closed Sea and Lake Ice closed 2020-08-28
| Date | Type | Magnitude |
|---|---|---|
| 2017-05-19T00:00:00Z | Point | — |
| 2017-07-07T00:00:00Z | Point | — |
| 2017-08-25T00:00:00Z | Point | — |
| 2017-12-01T00:00:00Z | Point | — |
| 2019-07-19T00:00:00Z | Point | — |
| 2019-07-26T00:00:00Z | Point | — |
| 2019-08-02T00:00:00Z | Point | — |
| 2019-08-09T00:00:00Z | Point | — |
| 2019-08-23T00:00:00Z | Point | — |
| 2019-09-06T00:00:00Z | Point | — |
| 2019-09-20T00:00:00Z | Point | — |
| 2019-10-04T00:00:00Z | Point | — |
| 2019-10-18T00:00:00Z | Point | — |
| 2019-10-25T00:00:00Z | Point | — |
| 2019-11-01T00:00:00Z | Point | — |
| 2019-11-08T00:00:00Z | Point | — |
| 2019-11-22T00:00:00Z | Point | — |
| 2019-12-06T00:00:00Z | Point | — |
| 2019-12-13T00:00:00Z | Point | — |
| 2019-12-27T00:00:00Z | Point | — |
| 2020-01-03T00:00:00Z | Point | — |
| 2020-01-10T00:00:00Z | Point | — |
| 2020-01-17T00:00:00Z | Point | — |
| 2020-01-31T00:00:00Z | Point | — |
| 2020-02-07T00:00:00Z | Point | — |
| 2020-04-03T00:00:00Z | Point | 55.0 NM^2 |
| 2020-04-17T00:00:00Z | Point | 55.0 NM^2 |
| 2020-04-24T00:00:00Z | Point | 55.0 NM^2 |
| 2020-05-01T00:00:00Z | Point | 55.0 NM^2 |
| 2020-05-08T00:00:00Z | Point | 55.0 NM^2 |
| 2020-06-05T00:00:00Z | Point | 55.0 NM^2 |
| 2020-07-03T00:00:00Z | Point | 55.0 NM^2 |
| 2020-07-17T00:00:00Z | Point | 55.0 NM^2 |
| 2020-07-31T00:00:00Z | Point | 55.0 NM^2 |
| 2020-08-14T00:00:00Z | Point | 55.0 NM^2 |