Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 22-01-2023 and time 21:59:08 (UTC) in region 6 km E Amatrice (RI)

A magnitude ML 1.5 earthquake occured in region: 6 km E Amatrice (RI), on

  • 22-01-2023 21:59:08 (UTC)
  • 22-01-2023 22:59:08 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6230, 13.3560 at 6 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

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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 6 2657 2657
Campotosto AQ 7 542 3199
Accumoli RI 12 667 3866
Capitignano AQ 12 665 4531
Cortino TE 13 656 5187
Crognaleto TE 13 1297 6484
Montereale AQ 14 2581 9065
Rocca Santa Maria TE 16 537 9602
Cittareale RI 16 482 10084
Fano Adriano TE 17 296 10380
Acquasanta Terme AP 17 2916 13296
Valle Castellana TE 17 977 14273
Arquata del Tronto AP 17 1178 15451
Pietracamela TE 20 271 15722
Barete AQ 20 737 16459

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km W of Teramo (54892 inhabitants)
30 Km N of L'Aquila (69753 inhabitants)
58 Km E of Terni (111501 inhabitants)
65 Km SE of Foligno (57155 inhabitants)
66 Km W of Montesilvano (53738 inhabitants)
73 Km W of Pescara (121014 inhabitants)
73 Km W of Chieti (51815 inhabitants)
86 Km NE of Tivoli (56533 inhabitants)
86 Km NE of Guidonia Montecelio (88673 inhabitants)
96 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
Bulletin
Rev1000 		ML 1.5 2023-01-22
21:59:08		 42.6228 13.3562 6 2024-03-01
17:18:02		 Bollettino Sismico Italiano INGV 116275711
Reviewed
Rev100 		ML 1.7 2023-01-22
21:59:08		 42.6217 13.352 6 2023-01-22
22:12:17		 Sala Sismica INGV-Roma 113735701
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-01-22 21:59:08 ± 0.05
Latitude 42.6228 ± 0.0027
Longitude 13.3562 ± 0.0037
Depth (km) 6 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 116275711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 360
Semi-minor axis of confidence ellipse (meter) 7
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 240
Circular confidence region, given by single value of horizontal uncertainty (meter) 360.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 109
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
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) 0.01709
Epicentral distance of station farthest from the epicenter (degree) 0.50542
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 116275711
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-04-11 11:13:50

ML:1.7

Field Value
Value 1.7
Uncertainty 0.0
Num. used stations 4
Type of magnitude ML
Reference to an origin 113735701
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-01-22 22:12:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHE. 2023-01-22T21:59:19.39 0.3 undecidable manual S 320 30.5472 101 -0.08 71
IV.MMO1.HNE. 2023-01-22T21:59:19.59 0.3 undecidable manual S 356 30.747 101 0.06 71
7F.SIB3.EHZ. 2023-01-22T21:59:19.07 0.6 undecidable manual S 346 28.8489 102 0.19 46
7F.SIB2.EHE. 2023-01-22T21:59:19.14 0.3 undecidable manual S 352 30.0477 101 -0.15 70
IV.CESI.HHE. 2023-01-22T21:59:19.62 0.1 undecidable manual P 319 56.0994 50 0.25 87
IV.T0110.HHE. 2023-01-22T21:59:18.99 0.1 undecidable manual P 142 55.5999 50 -0.3 86
IV.LNSS.HHZ. 2023-01-22T21:59:18.15 0.6 undecidable manual S 265 25.8519 103 0.27 46
IV.GIGS.HHZ. 2023-01-22T21:59:17.54 0.3 undecidable manual S 137 25.8519 103 -0.33 68
IV.FAGN.HHN. 2023-01-22T21:59:17.65 0.3 undecidable manual P 155 43.8228 50 0.18 68
IV.TERO.HHZ. 2023-01-22T21:59:16.19 0.3 undecidable manual S 90 20.2686 107 0.21 70
IV.MC2.EHZ. 2023-01-22T21:59:15.57 0.3 undecidable manual P 337 34.743 100 -0.16 69
7F.SIB3.EHZ. 2023-01-22T21:59:14.31 0.1 undecidable manual P 346 28.8489 102 -0.25 91
7F.SIB2.EHE. 2023-01-22T21:59:14.80 0.1 undecidable manual P 352 30.0477 101 0 96
IV.NRCA.HHE. 2023-01-22T21:59:14.86 0.1 undecidable manual P 320 30.5472 101 -0.04 95
IV.MTRA.HNZ. 2023-01-22T21:59:14.36 0.3 undecidable manual S 13 15.1737 112 0.03 73
IV.MMO1.HNE. 2023-01-22T21:59:14.97 0.1 undecidable manual P 356 30.747 101 0.03 95
IV.TERO.HHZ. 2023-01-22T21:59:13.09 0.1 undecidable manual P 90 20.2686 107 0.21 94
IV.CAMP.HHZ. 2023-01-22T21:59:13.03 0.3 undecidable manual S 156 10.5783 120 0.15 72
IV.GIGS.HHZ. 2023-01-22T21:59:13.72 0.1 undecidable manual P 137 25.8519 103 -0.25 92
IV.LNSS.HHZ. 2023-01-22T21:59:13.97 0.3 undecidable manual P 265 25.8519 103 -0.01 72
IV.MTRA.HNZ. 2023-01-22T21:59:12.02 0.1 undecidable manual P 13 15.1737 112 0.09 97
IV.CAMP.HHZ. 2023-01-22T21:59:11.34 0.1 undecidable manual P 156 10.5783 120 0.25 94
IV.SMA1.EHZ. 2023-01-22T21:59:10.76 0.3 undecidable manual S 297 1.8981 162 -0.09 74
IV.SMA1.EHZ. 2023-01-22T21:59:09.88 0.1 undecidable manual P 297 1.8981 162 -0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CAMP.HHE. ML:0.8 0.00009962103 0.1408 AML other m 2023-01-22T21:59:13.36
IV.CAMP.HHN. ML:0.8 0.00010185090500000001 0.2176 AML other m 2023-01-22T21:59:13.45
IV.TERO.HNN. ML:1.7 0.00036423784999999997 0.1792 AML other m 2023-01-22T21:59:16.35
IV.TERO.HHN. ML:1.7 0.000384 0.18 AML other m 2023-01-22T21:59:16.36
IV.TERO.HHE. ML:1.6 0.00033600000000000004 0.18 AML other m 2023-01-22T21:59:16.35
IV.TERO.HNE. ML:1.6 0.00032703720000000003 0.1664 AML other m 2023-01-22T21:59:16.36
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download