MIHARU 見張る
Watch Japan live — natural hazards, transport, infrastructure, society, and defense on one map.
Live · miharu.gaijindev.com
Forked from OSIRIS by simplifaisoul — Japan-focused data sources and layers added on top.
How to use it
Everything lives on the main map. Use the layer panel on the left to switch between four views: Live (active hazards and alerts), Infra (transport, power, and environment), Intel (society and security), and Ref (reference maps). Address search, postcode lookup, and company search are in the right-side panel on desktop.OPEN MAP
行政ツールとライブ警報は地図画面に移動しました。住所検索・郵便番号・選挙区の確認は Civic Tools（デスクトップ右側パネル）から利用できます。 レイヤーは Live · Infra · Intel · Ref の4タブで切り替えられます。
What MIHARU shows
MIHARU is a real-time map of Japan that brings together data from dozens of public sources into one place. You can see earthquakes as they happen, track active typhoons and wildfires, watch aircraft and ships move in real time, check train service disruptions, monitor air quality and radiation, view crime incidents, explore electoral districts, and get an AI-generated summary of everything currently happening.
MIHARU は、日本に住む人々のための災害・交通・治安・防衛・市場情報の総合ダッシュボードです。 地震・津波・台風・火山・火災・降水・放射線・航空（民間／自家用／ビジネス／軍用）・海運・鉄道・電力需要・事件／犯罪・自衛隊／在日米軍基地・防空識別圏・衛星・ニュース・市場を単一の画面で監視します。
Every layer shows real data from official or trusted public sources — never made-up or placeholder information. The one hand-drawn exception is the air defense zone boundary overlay, which is based on publicly available government announcements.
Data sources
- P2PQuakeEarthquake and tsunami alerts — real-time data shared by volunteers and official sensors across Japan
- JMA (Japan Meteorological Agency)Typhoons, volcanoes, weather alerts, and rainfall readings from weather stations nationwide
- NASA FIRMSActive wildfire detections from NASA satellites
- NASA EONETNatural event tracking — storms, fires, and volcanic eruptions
- NOAA Space WeatherSolar activity and geomagnetic storm alerts
- Soramame (Ministry of the Environment)Air quality readings from ~1,600 government monitoring stations across Japan (updated hourly)
- SafecastRadiation readings from citizen-submitted sensors
- CelesTrakSatellite positions tracked in real time
- Element84 / CopernicusSatellite imagery from the European Space Agency (Sentinel missions)
- adsb.lolLive aircraft positions over Japan — commercial, private, business, and military
- OpenSky NetworkBackup aircraft feed — personal use only
- aisstream.ioLive ship positions from maritime transponders
- ODPTLive train service status for JR and private rail lines
- OpenStreetMapShelter locations, police stations, military bases, and rail route geometry — community-maintained map data
- mini-tokyo-3dRail operator brand colors (MIT license, © Akihiko Kusanagi)
- TEPCO & grid operatorsReal-time electricity demand from all 10 regional power grid operators in Japan
- Safety NaviPolice-reported incidents and crimes — aggregated from Tokyo Metropolitan Police and nationwide bulletins
- NTA Corporate RegistryOfficial Japanese company registry
- e-StatGovernment statistics — foreign resident population data
- ZipcloudJapan postal code lookup
- GSI (Geospatial Information Authority)Government maps, addresses, and hazard zone data
- MLIT (Ministry of Land, Infrastructure, Transport)River and flood hazard information
- NHKJapan news headlines — personal use only
- Japan TimesEnglish-language Japan news — personal use only
- Yahoo FinanceNikkei 225 and TOPIX stock index quotes
- FrankfurterUSD/JPY exchange rate
- USGSGlobal earthquake feed
- GDELTGlobal news event database — geo-tagged stories from around the world
- CISA KEVKnown software vulnerabilities actively exploited by attackers
- ShadowserverInternet exposure and scanning reports
- BGPViewInternet network (ASN / prefix) lookup
- crt.shSSL certificate search
- Google Public DNSDNS lookup tool
- AlienVault OTXThreat intelligence and Tor exit-node check
- RDAP.orgDomain and IP registration lookup
- ip-api.comIP address location lookup
- WikipediaRegion and country summaries
- WikidataStructured facts about places and countries
- NominatimAddress-to-coordinate lookup (reverse geocoding)
- RestCountriesCountry reference data
- Anthropic ClaudeAI-generated situational briefing that summarises what's happening across all active layers
Things to keep in mind
- OpenSky Network, NHK, and Japan Times data is for personal, non-commercial use only. Check each source's terms if you plan to use MIHARU commercially.
- Radiation readings come from citizen-submitted sensors and are not official government data. Sensor accuracy varies by device.
- Crime and incident locations are approximate — most are accurate to a neighborhood block, not an exact address.
- The air defense zone boundaries are hand-drawn from public government announcements and are for general reference only. Do not use them for legal, navigation, or any official purpose.
- Shelter and police station data comes from OpenStreetMap, which is well-covered in cities but may be incomplete in rural areas.
- In a real emergency, always follow official guidance from Japan Meteorological Agency, local authorities, and emergency services.
From the developer
miharu.gaijindev.com · github.com/gaijindev
Hi, I'm Aaron — I live in Tokyo and built MIHARU because I couldn't find a single place to watch Japan as it actually is: earthquakes, typhoons, ships, flights, power load, air quality, and rail disruptions all at once, on a real map, with live data.
Why MIHARU exists
Most Japan situation-awareness tools are either government portals (slow, Japanese-only, single-topic) or global dashboards that treat Japan as a small dot on a world map. MIHARU is built specifically for people who live here, work here, or travel here and want to understand what's happening across the country in one glance — without needing to speak Japanese or hunt across a dozen different sites.
What's been built so far
- Live earthquake, tsunami, and early-warning feeds from Japan's P2PQuake network.
- Typhoon tracks and rainfall across ~1,300 JMA weather stations.
- Live AIS ship positions, flight traffic, and train disruption status across Japan.
- Air quality (PM2.5, oxidants, NO₂) from 環境省 Soramame — ~1,600 monitoring stations.
- Defense layers: JSDF and US military bases, air-defense zones, and foreign navy strait transits.
- Intel layers: foreign residents by city and prefecture, listed companies, embassies, immigration agreements.
- All 10 regional power grids with live demand and supply data.
- AI briefing that summarises the active situation across all layers in plain English.
What tips fund
Tips go toward server costs, data feed subscriptions, and time spent building new features. If MIHARU has been useful to you — whether during a typhoon, an earthquake, or just keeping an eye on things — a coffee helps a lot. I also build Japan Flights, a free daily cheap-fare scanner for travelers based in Japan.
☕ Buy me a coffeeContact & feedback
Found a data issue, a broken layer, or have a suggestion? Open an issue on GitHub. Bug reports and data-quality notes are very welcome.