実際に観測した情報(電文で入手できたものに限る)
| 発生時刻 | 震央地名 | 北緯 | 東経 | 深さ | 規模 | 最大震度 | 最大長周期 地震動階級 |
| 2026/04/20 16:52:00 | 三陸沖 | 39˚50.5'N | 143˚09.4'E | 19km | M 7.7 | 5強 | 3 |
EventID: 20260420165303
作成官署: 気象庁本庁
検知時刻: 2026/04/20 16:53:03
| No. | 気象庁システム 発表時刻 |
システム 受信時刻 |
検知からの 経過秒数 |
震源・EEW情報 | |||||||||
| 発生時刻 | 震央地名 | 北緯 | 東経 | 深さ | 規模 | 予測最大震度 | 予測最大長周期 地震動階級 |
精度 | 警報状態 | ||||
| 1 | 2026/04/20 16:53:08 | 16:53:08.816 | 5 | 2026/04/20 16:52:58 | 三陸沖 | 39.9 | 143.2 | 10km | M 4.7 | 震度2程度 | 0程度 | RK33513 | |
| 2 | 2026/04/20 16:53:09 | 16:53:09.408 | 6 | 2026/04/20 16:52:58 | 三陸沖 | 39.8 | 143.2 | 10km | M 5.4 | 震度3程度 | 0程度 | RK44524 | |
| 3 | 2026/04/20 16:53:09 | 16:53:09.521 | 6 | 2026/04/20 16:52:58 | 三陸沖 | 39.8 | 143.2 | 10km | M 5.5 | 震度3程度 | 0程度 | RK44424 | |
| 4 | 2026/04/20 16:53:12 | 16:53:12.591 | 9 | 2026/04/20 16:52:58 | 三陸沖 | 39.8 | 143.2 | 20km | M 6.0 | 震度3程度 | 0程度 | RK44454 | |
| 5 | 2026/04/20 16:53:13 | 16:53:13.636 | 10 | 2026/04/20 16:52:58 | 三陸沖 | 39.9 | 143.2 | 20km | M 6.0 | 震度3程度 | 0程度 | RK44454 | |
| 6 | 2026/04/20 16:53:14 | 16:53:14.565 | 11 | 2026/04/20 16:52:58 | 三陸沖 | 39.9 | 143.2 | 20km | M 6.2 | 震度4程度 | 0程度 | RK44554 | |
| 7 | 2026/04/20 16:53:17 | 16:53:17.448 | 14 | 2026/04/20 16:52:58 | 三陸沖 | 39.9 | 143.2 | 20km | M 6.3 | 震度4程度 | 1程度 | RK44554 | |
| 8 | 2026/04/20 16:53:17 | 16:53:17.596 | 14 | 2026/04/20 16:52:58 | 三陸沖 | 39.9 | 143.2 | 20km | M 6.5 | 震度4程度 | 1程度 | RK44554 | |
| 9 | 2026/04/20 16:53:18 | 16:53:18.536 | 15 | 2026/04/20 16:52:58 | 三陸沖 | 39.9 | 143.2 | 20km | M 6.3 | 震度4程度 | 1程度 | RK44454 | |
| 10 | 2026/04/20 16:53:19 | 16:53:19.541 | 16 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 20km | M 6.5 | 震度4程度 | 1程度 | RK44454 | |
| 11 | 2026/04/20 16:53:20 | 16:53:20.497 | 17 | 2026/04/20 16:52:57 | 三陸沖 | 39.8 | 143.2 | 20km | M 6.9 | 震度4程度 | 2程度 | RK44454 | |
| 12 | 2026/04/20 16:53:21 | 16:53:21.738 | 18 | 2026/04/20 16:52:57 | 三陸沖 | 39.8 | 143.2 | 20km | M 7.0 | 震度4程度 | 2程度 | RK44454 | |
| 13 | 2026/04/20 16:53:23 | 16:53:23.388 | 20 | 2026/04/20 16:52:57 | 三陸沖 | 39.8 | 143.2 | 20km | M 7.1 | 震度5弱程度 | 2程度 | RK44454 | TRUE |
| 1 | 2026/04/20 16:53:23 | 16:53:23.395 | 20 | 警報発報(VXSE43) | |||||||||
| 14 | 2026/04/20 16:53:23 | 16:53:23.538 | 20 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 7.2 | 震度5弱程度 | 2程度 | RK44454 | TRUE |
| 15 | 2026/04/20 16:53:24 | 16:53:24.538 | 21 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 7.3 | 震度5弱程度 | 2程度 | RK44454 | TRUE |
| 16 | 2026/04/20 16:53:25 | 16:53:25.329 | 22 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 7.2 | 震度5弱程度 | 2程度 | RK44454 | TRUE |
| 17 | 2026/04/20 16:53:25 | 16:53:25.885 | 22 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 6.9 | 震度4程度 | 1程度 | RK44454 | TRUE |
| 18 | 2026/04/20 16:53:26 | 16:53:26.399 | 23 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 7.0 | 震度5弱程度 | 2程度 | RK44454 | TRUE |
| 19 | 2026/04/20 16:53:29 | 16:53:29.426 | 26 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 6.7 | 震度4程度 | 1程度 | RK44454 | TRUE |
| 20 | 2026/04/20 16:53:29 | 16:53:29.596 | 26 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 6.8 | 震度4程度 | 1程度 | RK44454 | TRUE |
| 21 | 2026/04/20 16:53:33 | 16:53:33.691 | 30 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 6.8 | 震度4程度 | 1程度 | RK44454 | TRUE |
| 22 | 2026/04/20 16:53:34 | 16:53:34.793 | 31 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 6.8 | 震度4程度 | 1程度 | RK44554 | TRUE |
| 23 | 2026/04/20 16:53:36 | 16:53:36.404 | 33 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 6.9 | 震度4程度 | 1程度 | RK44554 | TRUE |
| 24 | 2026/04/20 16:53:37 | 16:53:37.364 | 34 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 7.0 | 震度5弱程度 | 2程度 | RK44554 | TRUE |
| 25 | 2026/04/20 16:53:38 | 16:53:38.581 | 35 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 7.1 | 震度5弱程度 | 2程度 | RK44554 | TRUE |
| 26 | 2026/04/20 16:53:39 | 16:53:39.440 | 36 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 7.2 | 震度5弱程度 | 2程度 | RK44554 | TRUE |
| 27 | 2026/04/20 16:53:40 | 16:53:40.629 | 37 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 7.3 | 震度5弱程度 | 2程度 | RK44554 | TRUE |
| 28 | 2026/04/20 16:53:41 | 16:53:41.203 | 38 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 7.4 | 震度5強程度 | 2程度 | RK44554 | TRUE |
| 29 | 2026/04/20 16:53:42 | 16:53:42.630 | 39 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 7.5 | 震度5強程度 | 2程度 | RK44554 | TRUE |
| 30 | 2026/04/20 16:54:02 | 16:54:02.139 | 59 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 7.5 | 震度5強程度 | 2程度 | RK44554 | TRUE |
| 31 | 2026/04/20 16:54:16 | 16:54:16.964 | 73 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 7.5 | 震度5強程度 | 2程度 | RK44554 | TRUE |
| 32 | 2026/04/20 16:54:36 | 16:54:36.090 | 93 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 7.5 | 震度5強程度 | 2程度 | RK44554 | TRUE |
| 33 | 2026/04/20 16:54:42 | 16:54:42.367 | 99 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 7.5 | 震度5強程度 | 2程度 | RK44559 | TRUE |
| 34 | 2026/04/20 16:55:02 | 16:55:02.136 | 119 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 7.5 | 震度5強程度 | 2程度 | RK44559 | TRUE |
| 35 | 2026/04/20 16:55:22 | 16:55:22.096 | 139 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 7.5 | 震度5強程度 | 2程度 | RK44559 | TRUE |
| 36 | 2026/04/20 16:55:42 | 16:55:42.113 | 159 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 7.5 | 震度5強程度 | 2程度 | RK44559 | TRUE |
| 37 | 2026/04/20 16:56:02 | 16:56:02.127 | 179 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 7.5 | 震度5強程度 | 2程度 | RK44559 | TRUE |
| 38 | 2026/04/20 16:56:22 | 16:56:22.048 | 199 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 7.5 | 震度5強程度 | 2程度 | RK44559 | TRUE |
| 39 | 2026/04/20 16:56:42 | 16:56:42.059 | 219 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 7.5 | 震度5強程度 | 2程度 | RK44559 | TRUE |
| 40 | 2026/04/20 16:56:50 | 16:56:50.089 | 227 | 2026/04/20 16:52:57 | 三陸沖 | 39.9 | 143.2 | 30km | M 7.5 | 震度5強程度 | 2程度 | RK44559 | TRUE |