Earthquake with magnitude of ML 0.9 on date 31-01-2024 and time 15:49:35 (Italy) in region 2 km E Amatrice (RI)

A magnitude ML 0.9 earthquake occured in region: 2 km E Amatrice (RI), on

  • 31-01-2024 14:49:35 (UTC)
  • 31-01-2024 15:49:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6320, 13.3090 at 11 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Amatrice RI 2 2657 2657
Accumoli RI 9 667 3324
Campotosto AQ 10 542 3866
Cittareale RI 12 482 4348
Capitignano AQ 12 665 5013
Montereale AQ 13 2581 7594
Arquata del Tronto AP 16 1178 8772
Cortino TE 16 656 9428
Crognaleto TE 17 1297 10725
Acquasanta Terme AP 18 2916 13641
Rocca Santa Maria TE 19 537 14178
Valle Castellana TE 19 977 15155
Borbona RI 20 617 15772

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km N of L'Aquila (69753 inhabitants)
33 Km W of Teramo (54892 inhabitants)
55 Km E of Terni (111501 inhabitants)
61 Km SE of Foligno (57155 inhabitants)
70 Km W of Montesilvano (53738 inhabitants)
76 Km W of Pescara (121014 inhabitants)
77 Km W of Chieti (51815 inhabitants)
85 Km NE of Guidonia Montecelio (88673 inhabitants)
85 Km NE of Tivoli (56533 inhabitants)
92 Km SE of Perugia (166134 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.9 2024-01-31
14:49:35
42.6317 13.3093 11 2024-01-31
15:09:10
Sala Sismica INGV-Roma 124967171
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-01-31 14:49:35 ± 0.08
Latitude 42.6317 ± 0.0054
Longitude 13.3093 ± 0.0098
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 124967171

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 770
Semi-minor axis of confidence ellipse (meter) 610
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 259
Circular confidence region, given by single value of horizontal uncertainty (meter) 770.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.01889
Epicentral distance of station farthest from the epicenter (degree) 0.24731
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 124967171
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-01-31 15:09:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2024-01-31T14:49:45.39 0.6 undecidable manual S 325 27.4503 50 -0.17 48
IV.RM33.EHZ. 2024-01-31T14:49:42.21 0.6 undecidable manual S 210 15.6732 50 -0.2 49
IV.NRCA.HHZ. 2024-01-31T14:49:41.49 0.1 positive manual P 325 27.4503 50 0.06 99
IV.TERO.HHZ. 2024-01-31T14:49:40.77 0.3 positive manual P 92 24.0537 50 -0.13 73
IV.RM33.EHZ. 2024-01-31T14:49:39.73 0.3 negative manual P 210 15.6732 50 0.13 74
IV.SMA1.EHZ. 2024-01-31T14:49:39.51 0.6 undecidable manual S 93 2.0979 169 -0.17 50
IV.SMA1.EHZ. 2024-01-31T14:49:38.23 0.1 negative manual P 93 2.0979 169 0.2 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.1 0.00020500000000000002 0.96 AML other m 2024-01-31T14:49:40.19
IV.SMA1.EHN. ML:0.9 0.0001295 0.1 AML other m 2024-01-31T14:49:40.18
IV.RM33.EHN. ML:0.8 0.000052499999999999995 0.34 AML other m 2024-01-31T14:49:42.40
IV.RM33.EHE. ML:0.8 0.0000623 0.64 AML other m 2024-01-31T14:49:42.75
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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