Reviewed by USGSIndonesia24y ago
M4.4 earthquake in Simeulue, Indonesia
Friday, November 22, 2002, 02:43:22 UTC · 2.507°N, 95.978°E
A magnitude 4.4 earthquake struck in Simeulue, Indonesia on Friday, November 22, 2002, 02:43:22 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 earthquakeDashed circle: 50 km aftershock search area
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
68 km
from the nearest mapped plate boundary, between the Cocos and Nazca 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 lists 4 M2.5+ earthquakes within 50 km in the following 30 days; the largest was M5.2 on November 30, 2002. Most nearby activity right after a large earthquake is aftershocks, which usually become less frequent over days and weeks.
Regional history
Past M5+ earthquakes within 300 km
USGS lists 227 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 8.2The 1907 Sumatra Earthquake and TsunamiJanuary 4, 1907 · 53 km W of this epicenter
- 7.5209 km WSW of Sinabang, IndonesiaNovember 21, 1969 · 167 km W of this epicenter
- 7.450 km NW of Sinabang, IndonesiaNovember 2, 2002 · 37 km N of this epicenter
- 7.186 km WSW of Pangkalan Brandan, IndonesiaSeptember 19, 1936 · 220 km NE of this epicenter
- 7.040 km NE of Meulaboh, IndonesiaAugust 3, 1935 · 214 km N of this epicenter
- 7.085 km SSE of Meulaboh, IndonesiaJune 20, 1976 · 106 km N of this epicenter
- 6.928 km NNE of Sinabang, IndonesiaNovember 4, 1917 · 63 km E of this epicenter
- 6.9164 km WSW of Sinabang, IndonesiaNovember 8, 1995 · 127 km SW of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 13 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 2,209 recorded deaths. The most severe:
- 1907M8.2
Nw Sumatra: Gunungsitoli, Barus
4 Jan 1907 · 53 km away
2,188 deathsSevere damage ($5–24M)tsunami
- 1936
N Sumatera: Tapanuli, Karo
9 Sep 1936 · 202 km away · intensity VIII
17 deathsModerate damage ($1–5M)
- 2002M7.3
Sumatera: Simeulue
2 Nov 2002 · 37 km away
3 deathsSevere damage ($5–24M)
- 1990M6.8
N Sumatera, Blangkejeren, Kutacane
15 Nov 1990 · 226 km away
1 death$2 million damage
- 1843M7.3
Sw. Sumatra
5 Jan 1843 · 251 km away · intensity XI
Severe damage ($5–24M)tsunami
- 1997M6.0
N. Sumatera, Aceh, Banda Aceh, Medan
20 Aug 1997 · 214 km away
Moderate damage ($1–5M)
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.