Reviewed by USGSIndonesia25y ago
M4.4 earthquake 85 km E of Katabu, Indonesia
Monday, October 22, 2001, 11:54:33 UTC · 5.032°S, 123.282°E
A magnitude 4.4 earthquake struck 85 km E of Katabu, Indonesia on Monday, October 22, 2001, 11:54:33 UTC, at a depth of 33.0 km (shallow).
- Magnitude
- 4.4
- Light · mb
- Depth
- 33 km
- Shallow
- Felt reports
- 0
- Did You Feel It?
- Est. shaking
- —
- No ShakeMap
- PAGER alert
- None
- Not issued
- Tsunami
- No flag
- USGS feed
Outlined circle: this earthquake
In context
How big was it, and why here?
Energy released
60 tons of TNT
That is about 1/251 of the Hiroshima bomb. A magnitude 5.0 releases about 8 times more energy.
Tectonic setting
54 km
from the nearest mapped plate boundary, between the Molucca Sea and Banda Sea plates. Earthquakes cluster along boundaries like this one, where plates collide, pull apart or slide past each other.
Depth: shallow
33 km
Shallow earthquakes (under 70 km) produce the strongest surface shaking for their size, so they are the ones most likely to cause damage near the epicenter.
Did You Feel It?
Where it was felt
No “Did You Feel It?” reports have been published for this event yet. If you felt it, you can add your report on the USGS website.
I felt it — report to USGS ↗USGS PAGER estimate
Who was exposed to shaking
USGS publishes PAGER impact estimates for significant earthquakes, usually within an hour. No PAGER estimate is available for this event.
After the main event
Aftershocks within 50 km
USGS has not published any M2.5+ earthquake within 50 km in the 30 days after this event.
Regional history
Past M5+ earthquakes within 300 km
USGS lists 143 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 7.9169 km NNE of Maumere, IndonesiaJune 17, 1996 · 246 km S of this epicenter
- 7.5155 km E of Kendari, IndonesiaOctober 19, 2001 · 124 km NE of this epicenter
- 7.0199 km SSW of Katabu, IndonesiaMarch 3, 1927 · 230 km SW of this epicenter
- 7.0194 km SE of Baubau, IndonesiaAugust 6, 1914 · 186 km SE of this epicenter
- 7.0166 km NNW of Maubara, Timor LesteJune 22, 1966 · 285 km SE of this epicenter
- 6.9215 km NW of Maubara, Timor LesteOctober 18, 1964 · 251 km S of this epicenter
- 6.9160 km NNE of Maumere, IndonesiaJune 7, 1991 · 255 km S of this epicenter
- 6.6172 km NNW of Maumere, IndonesiaAugust 2, 1992 · 288 km SW of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 1 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700. The most severe:
- 2001M7.5
Banda Sea
19 Oct 2001 · 124 km away
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.