Alert Survey - Earthquake parameters in region Off east coast of Honshu, Japan, date 2026-04-20 08:30:09, lat 39.79, lon 143.19

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Earthquake parameters in region Off east coast of Honshu, Japan,
date 2026-04-20 08:30:09, lat 39.79, lon 143.19, depth 33 km, mb: 4.8/42
detemined with station data:

N	Code	Time	Phase	Delta	Azimuth	Residual	Ms	mb	Network
1	JKA	08:31:13.5	P	4.35	354	0.1	-	-	IDC
2	YUK	08:31:18.7	P	4.69	24	0.6	-	-	SAGSR
3	MAJO	08:31:23.8	P	5.09	232	0.3	-	-	JMA
4	MJAR	08:31:24.5	P	5.10	232	0.8	-	-	JMA
5	YSS	08:31:53.6	P	7.18	358	1.4	-	-	SAGSR
6	USA0B	08:32:24.6	P	9.43	302	1.5	-	-	RIPT
7	ZEA	08:34:11.2	P	17.66	328	-1.8	-	-	SAGSR
8	HIA	08:34:28.6	P	19.15	307	-1.5	-	4.6	BJI
9	MA2	08:34:44.9	P	20.38	11	1.4	-	4.9	NEGSR
10	TUP	08:34:54.4	P	21.41	321	-0.1	-	5.0	BAGSR
11	YAK	08:35:17.3	P	23.75	344	-1.5	-	5.4	YAGSR
12	SEY	08:35:18.5	P	23.83	10	-1.1	-	5.3	NEGSR
13	ULN	08:35:49.9	P	27.09	299	0.7	-	4.8	OBM
14	SONM	08:35:53.4	P	27.53	299	0.2	-	4.4	OBM
15	PDYAR	08:35:55.6	P	27.70	326	0.9	-	5.2	RIPT
16	ZAK	08:36:12.8	P	29.77	304	-0.2	-	5.4	BAGSR
17	MOY	08:36:27.2	P	31.33	306	0.4	-	5.1	BAGSR
18	ORL	08:36:35.1	P	32.14	308	1.1	-	4.8	BAGSR
19	TIXI	08:36:36.4	P	32.75	352	-2.9	-	5.4	YAGSR
20	DGZ	08:37:41.8	P	39.98	303	0.9	-	5.2	ASGSR
21	ZAA0B	08:37:50.1	P	41.15	310	-0.5	-	5.4	RIPT
22	ZALV	08:37:51.5	P	41.15	310	0.9	-	4.5	RIPT
23	NVS	08:37:56.6	P	42.00	312	-0.9	-	5.3	ASGSR
24	CHTO	08:38:06.4	P	43.35	254	-2.1	-	4.6	BKK
25	CMAR	08:38:11.7	P	43.57	254	1.5	-	4.0	BKK
26	MK31	08:38:13.0	P	43.89	300	0.1	-	5.1	NNC
27	MKAR	08:38:13.6	P	44.10	300	-0.9	-	4.4	NNC
28	KURK	08:38:24.5	P	45.38	306	-0.2	-	5.3	NNC
29	ILAR	08:38:34.0	P	46.43	34	1.1	-	3.7	USAF
30	BORK	08:38:59.4	P	49.82	311	0.2	-	5.6	NNC
31	AAK	08:39:04.6	P	50.45	297	0.7	-	4.8	KYRG
32	ARTI	08:39:40.3	P	55.35	318	0.2	-	5.4	OBGSR
33	JZAX	08:39:45.2	P	56.14	297	-0.6	-	5.0	IRIS-IDA
34	KIRV	08:40:03.6	P	58.91	322	-1.7	-	5.3	RIPT
35	WRA	08:40:11.9	P	59.99	190	-1.0	-	4.2	CAN
36	YKA	08:40:18.6	P	60.73	31	0.8	-	3.4	OTTR
37	ASAR	08:40:37.7	P	63.71	189	-0.2	-	4.0	AUST
38	GEYT	08:40:37.3	P	63.73	299	-0.7	-	4.3	IDC
39	OBN	08:40:55.1	P	66.73	323	-2.4	-	5.1	OBGSR
40	FINES	08:40:59.8	P	67.03	332	0.4	-	4.4	HEL
41	ZEI	08:41:18.9	P	70.14	309	0.1	-	5.0	OBGSR
42	KIV	08:41:19.7	P	70.16	311	0.8	-	5.7	OBGSR
43	KBZ	08:41:19.4	P	70.17	311	0.4	-	5.3	RIPT
44	SHA1	08:41:20.2	P	70.30	311	0.4	-	5.0	KMGSR
45	GNI	08:41:26.4	P	71.25	307	0.9	-	5.1	NSSP
46	NOA	08:41:31.7	P	72.18	338	0.5	-	4.3	NAO
47	AKASG	08:41:35.2	P	72.97	323	-0.7	-	3.9	NSAU
48	BRTR	08:42:05.9	P	78.06	312	0.9	-	3.8	ISK
49	GERES	08:42:22.2	P	81.10	329	0.7	-	3.9	BGRD