NEWSAR
Multi-perspective news intelligence
SRCAssociated Press (AP)
LANGEN
LEANCenter
WORDS234
ENT12
SAT · 2026-08-22 · 18:23 GMTBRIEF NSR-2026-0822-104920
News/A moderate earthquake of magnitude 5.9 shakes eastern Japan.…
NSR-2026-0822-104920News Report·EN·Human Interest

A moderate earthquake of magnitude 5.9 shakes eastern Japan. No tsunami alert is issued

A moderate earthquake, preliminarily measured at magnitude 5.9 by the Japan Meteorological Agency and 5.8 by the United States Geological Survey, shook eastern Japan, including the Tokyo area, early Sunday. The quake originated in southern Ibaraki prefecture at a depth of 70 kilometers.

4 MIN READ 475Associated Press (AP)Filed 2026-08-22 · 18:23 GMTLean · CenterRead · 1 min
A moderate earthquake of magnitude 5.9 shakes eastern Japan. No tsunami alert is issued
Associated Press (AP)FIG 01
Reading time
1min
Word count
234words
Sources cited
4cited
Entities identified
12entities
Quality score
100%
§ 01

Briefing Summary

AI-generated
NEWSAR · AI

A moderate earthquake, preliminarily measured at magnitude 5.9 by the Japan Meteorological Agency and 5.8 by the United States Geological Survey, shook eastern Japan, including the Tokyo area, early Sunday. The quake originated in southern Ibaraki prefecture at a depth of 70 kilometers. No tsunami alert was issued. While there were no immediate reports of widespread damage or injuries, an underground water pipe ruptured in Tokyo's Koto ward, and approximately 460 homes in Tokyo experienced power outages. The government established a task force to assess potential damage. Nuclear facilities reported no unusual activity.

Confidence 0.90Sources 4Claims 5Entities 12
§ 02

Article analysis

Model · rule-based
Framing
Human Interest
Environmental
Tone
Measured
AI-assessed
CalmNeutralAlarmist
Factuality
0.90 / 1.00
Factual
LowHigh
Sources cited
4
Well sourced
FewMany
§ 03

Key claims

5 extracted
01

About 460 homes in Tokyo experienced power outages.

factualTEPCO Power Grid
Confidence
1.00
02

The United States Geological Survey recorded a preliminary magnitude of 5.8.

factualUnited States Geological Survey
Confidence
1.00
03

The earthquake occurred in the southern Ibaraki prefecture at a depth of 70 kilometers.

factualJapan Meteorological Agency
Confidence
1.00
04

There was no danger of a tsunami following the earthquake.

factualJapan Meteorological Agency
Confidence
1.00
05

A moderate earthquake of magnitude 5.9 shook eastern Japan, including Tokyo.

factualJapan Meteorological Agency
Confidence
1.00
§ 04

Full report

1 min read · 234 words
Updated [hour]:[minute] [AMPM] [timezone], [monthFull] [day], [year] Tokyo (AP) — A moderate earthquake with a preliminary magnitude of 5.9 rattled eastern Japan, including the Tokyo area, early on Sunday, but there was no danger of a tsunami, the country’s meteorological agency said. According to the Japan-meteorological-agency" class="entity-link entity-organization" data-entity-id="3275" data-entity-type="organization">Japan Meteorological Agency, the quake occurred in the southern Ibaraki prefecture, at a depth of 70 kilometers (42 miles). The United States Geological Survey recorded a preliminary magnitude of 5.8. There were no immediate reports of injuries or damage. The government set up a task force to assess the extent of possible damage, Prime Minister Sanae Takaichi said on X. The temblor also set off emergency quake alerts on mobile phones and shook the Tokyo area, but NHK public television showed traffic on roads in nearby cities, including Mito and Saitama, seemingly normal.An underground water pipe ruptured in Tokyo’s eastern ward of Koto, with water pouring out onto the road, NHK footage showed. About 460 homes in Tokyo had power outages, according to TEPCO Power Grid. There were no reports of anything out of the ordinary from about a dozen nuclear power plants and other facilities that handle nuclear materials, the Nuclear Regulation Authority said. Last month, a magnitude 7.1 quake struck the Kumamoto area on Japan’s southernmost island of Kyushu, killing 38 people and injuring 364. It also destroyed more than 1,500 buildings and damaged nearly 20,000 others.
§ 05

Entities

12 identified
§ 06

Keywords & salience

10 terms
earthquake
1.00
eastern japan
0.90
magnitude 5.9
0.80
tsunami alert
0.70
japan meteorological agency
0.60
tokyo area
0.50
ibaraki prefecture
0.50
power outages
0.40
nuclear power plants
0.40
damage assessment
0.40
§ 07

Topic connections

Interactive graph
Network visualization showing 51 related topics
View Full Graph
Person Organization Location Event|Click node to navigate|Edge numbers = shared articles