Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 18-01-2020 and time 13:02:13 (Italy) in region 8 km SE Norcia (PG)

A magnitude ML 1.2 earthquake occured in region: 8 km SE Norcia (PG), on

  • 18-01-2020 12:02:13 (UTC)
  • 18-01-2020 13:02:13 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7340, 13.1560 at 11 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
Norcia PG 8 4957 4957
Accumoli RI 9 667 5624
Cascia PG 12 3217 8841
Arquata del Tronto AP 12 1178 10019
Cittareale RI 13 482 10501
Amatrice RI 16 2657 13158
Castelsantangelo sul Nera MC 18 281 13439
Poggiodomo PG 18 117 13556
Preci PG 19 724 14280
Montegallo AP 19 523 14803
Monteleone di Spoleto PG 19 599 15402

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km SE of Foligno (57155 inhabitants)
46 Km W of Teramo (54892 inhabitants)
46 Km E of Terni (111501 inhabitants)
47 Km NW of L'Aquila (69753 inhabitants)
75 Km SE of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
89 Km NE of Guidonia Montecelio (88673 inhabitants)
91 Km NE of Tivoli (56533 inhabitants)
92 Km W of Pescara (121014 inhabitants)
93 Km E of Viterbo (67173 inhabitants)
93 Km W of Chieti (51815 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 1.2 2020-01-18
12:02:13		 42.7343 13.1565 11 2020-07-18
21:08:32		 Bollettino Sismico Italiano INGV 78193231
Reviewed
Rev100 		ML 1.5 2020-01-18
12:02:13		 42.7342 13.1512 11 2020-01-18
12:08:35		 Sala Sismica INGV-Roma 75629261
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-18 12:02:13 ± 0.05
Latitude 42.7343 ± 0.0018
Longitude 13.1565 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 78193231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 256
Semi-minor axis of confidence ellipse (meter) 159
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 74
Circular confidence region, given by single value of horizontal uncertainty (meter) 260.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.10342
Epicentral distance of station farthest from the epicenter (degree) 0.35883
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.5
Num. used stations 8
Type of magnitude ML
Reference to an origin 75629261
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-18 12:08:35

ML:1.2

Field Value
Value 1.2
Uncertainty 0.4
Num. used stations 15
Type of magnitude ML
Reference to an origin 78193231
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-04-14 11:33:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHE. 2020-01-18T12:02:26.58 0.3 undecidable manual S 6 39.8268 90 0.3 69
IV.CESI.HHE. 2020-01-18T12:02:25.31 0.6 undecidable manual S 326 36.3414 90 -0.03 49
IV.RM33.EHZ. 2020-01-18T12:02:22.45 0.6 undecidable manual S 169 25.4523 90 0.01 50
IV.GAVE.EHZ. 2020-01-18T12:02:21.30 0.3 undecidable manual S 258 21.867 90 -0.18 72
IV.MMO1.EHZ. 2020-01-18T12:02:21.80 0.6 undecidable manual S 37 22.9548 90 0.04 50
IV.MTRA.EHE. 2020-01-18T12:02:20.59 0.6 undecidable manual S 83 19.6692 91 -0.31 48
IV.SMA1.EHZ. 2020-01-18T12:02:20.69 0.1 undecidable manual S 128 18.5703 91 0.09 99
IV.CSP1.EHE. 2020-01-18T12:02:20.55 0.1 undecidable manual P 6 39.8268 90 -0.19 94
IV.CESI.HHE. 2020-01-18T12:02:20.17 0.1 undecidable manual P 326 36.3414 90 -0.03 98
IV.LNSS.HHZ. 2020-01-18T12:02:20.21 0.3 undecidable manual S 213 17.3715 91 -0.08 75
IV.MF5.EHN. 2020-01-18T12:02:20.49 0.1 undecidable manual P 41 37.3293 90 0.12 95
IV.CAMP.HHZ. 2020-01-18T12:02:19.25 0.1 undecidable manual P 137 30.1476 90 0 99
IV.FDMO.HHZ. 2020-01-18T12:02:19.67 0.1 undecidable manual P 350 33.9438 90 -0.17 95
IV.GAVE.EHZ. 2020-01-18T12:02:18.10 0.1 undecidable manual P 258 21.867 90 0.13 98
IV.NRCA.HHZ. 2020-01-18T12:02:18.68 0.3 undecidable manual S 343 11.4774 112 -0.06 77
IV.MMO1.EHZ. 2020-01-18T12:02:18.01 0.1 undecidable manual P 37 22.9548 90 -0.13 98
IV.RM33.EHZ. 2020-01-18T12:02:18.46 0.1 positive manual P 169 25.4523 90 -0.06 100
IV.LNSS.HHZ. 2020-01-18T12:02:17.36 0.1 undecidable manual P 213 17.3715 91 0.08 100
IV.MTRA.EHE. 2020-01-18T12:02:17.44 0.1 undecidable manual P 83 19.6692 91 -0.2 98
IV.SMA1.EHZ. 2020-01-18T12:02:17.58 0.1 undecidable manual P 128 18.5703 91 0.11 98
IV.MC2.EHZ. 2020-01-18T12:02:17.83 0.3 positive manual P 8 19.7691 91 0.17 73
IV.NRCA.HHZ. 2020-01-18T12:02:16.48 0.1 undecidable manual P 343 11.4774 112 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.7 0.0005994999999999999 0.16 AML other m 2020-01-18T12:02:18.84
IV.NRCA.HHN. ML:1.4 0.000248 0.12 AML other m 2020-01-18T12:02:18.88
IV.LNSS.HHE. ML:1.5 0.0002535 0.24 AML other m 2020-01-18T12:02:20.56
IV.LNSS.HHN. ML:1.5 0.0002395 1.86 AML other m 2020-01-18T12:02:20.96
IV.NRCA.HNE. ML:1.6 0.00048543795 0.1152 AML other m 2020-01-18T12:02:18.84
IV.NRCA.HNN. ML:1.4 0.0002586474 0.1216 AML other m 2020-01-18T12:02:18.88
IV.LNSS.HNN. ML:1.4 0.00022536612 0.2112 AML other m 2020-01-18T12:02:20.60
IV.LNSS.HNE. ML:1.5 0.00026859984999999997 0.2624 AML other m 2020-01-18T12:02:20.56
IV.SMA1.EHN. ML:0.6 0.000029298955000000002 0.16 AML other m 2020-01-18T12:02:21.34
IV.SMA1.EHE. ML:0.8 0.00004974123 0.3008 AML other m 2020-01-18T12:02:21.92
IV.GAVE.EHE. ML:0.9 0.000055303900000000004 0.1216 AML other m 2020-01-18T12:02:22.52
IV.GAVE.EHN. ML:1.0 0.00006940862 0.3392 AML other m 2020-01-18T12:02:22.06
IV.RM33.EHE. ML:0.8 0.000032521074999999994 0.1344 AML other m 2020-01-18T12:02:23.57
IV.RM33.EHN. ML:0.6 0.00002678799 0.1216 AML other m 2020-01-18T12:02:23.20
IV.FDMO.HHN. ML:0.6 0.000013747459999999999 0.3008 AML other m 2020-01-18T12:02:25.80
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