Open Earth

Honmachi

Live hazards, weather and earthquake history for Honmachi, Kumamoto, Japan. Updated automatically from official sources.

Notable events within 100 km, 12 months

7

Quakes within 100 km, 12 months (all sizes)

7

Strongest nearby, 10 years

M6.8

Nearest volcano

40 km

Unzendake

Hazard summary for Honmachi

In the past 12 months 7 notable hazard events were recorded within 100 km of Honmachi. Instruments also logged 7 earthquakes of all sizes in the same area. The strongest earthquake within 100 km in the last ten years measured magnitude 6.8. The largest quake on record within 300 km was a magnitude 8.0 on 18 Nov 1941. The nearest volcano is Unzendake, about 40 km away. Over the last 9 years the area has averaged 4.3 magnitude 4+ earthquakes a year, with the most in 2017 (7). So far 2026 has been in line with average, with 4. The deadliest disaster on record within 300 km was the 1792 magnitude 6.4 earthquake near Kyusyu Island, which killed 15,030 people.

Notable events within 100 km, by month

Year by year, within 100 km

Magnitude 4+ earthquakes near Honmachi each year.

YearNotable eventsM4+ quakesStrongest
202654M6.8
202566M5.3
202477M5.2
202300—
202222M4.6
202155M4.5
202011M4.2
201944M4.7
201877M4.5
201777M4.8

Temperature and air quality history

How conditions near Honmachi have changed day by day.

Daily highs and lows, last 30 days

Each bar runs from the day's low (teal) to its high (orange) at Kotō, the nearest monitored city.

31°C14°C
16 Oct17 Oct

Worst air quality each day

16 Oct17 Oct
Hottest day
29°C / 84°F
17 Oct 2026
Coldest night
15°C / 60°F
16 Oct 2026
Worst air
AQI 75
16 Oct 2026

Records since tracking began on 16 Oct 2026. Hourly modelled values from Open-Meteo, stored by Open Earth.

Recent activity nearby

Events within 300 km in the last 90 days.

Strongest earthquakes on record

Magnitude 5 and above within 300 km, since 1900.

Historic disasters nearby

The most significant damaging earthquakes, tsunamis and eruptions within 300 km, from NOAA records going back centuries.

  • M6.4 earthquake, Kyusyu Island

    21 May 1792Triggered a tsunami15,030 killed707 injured6,200 homes destroyed

  • Unzendake eruption (VEI 2)

    21 May 179215,000 killed707 injured6,200 homes destroyed

  • M6.4 earthquake, Shimabara, Yatsushiro, Higo

    30 June 744Triggered a tsunami1,520 killed470 homes destroyed

  • M7.5 earthquake, Off Masuda, Shimane Prefecture

    16 June 1026Triggered a tsunami1,001 killed3,000 homes destroyed

  • Tsunami, Nagasaki Prefecture

    1 April 17001,001 killed300 homes destroyed

  • M7.0 earthquake, Tsushima, Nagasaki Prefecture

    16 April 1700Triggered a tsunami1,000 killed

  • M7.4 earthquake, Honshu: Sw

    14 March 1872Triggered a tsunami804 killed200 injured5,796 homes destroyed

  • M6.9 earthquake, Beppu Bay

    4 September 1596Triggered a tsunami708 killed80 homes destroyed