Earthquake with magnitude of ML 1.5 on date 23-12-2020 and time 14:19:31 (Italy) in region 4 km NW Preci (PG)

A magnitude ML 1.5 earthquake occured in region: 4 km NW Preci (PG), on

  • 23-12-2020 13:19:31 (UTC)
  • 23-12-2020 14:19:31 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9, 13 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Preci PG 4 724 724
Sellano PG 6 1079 1803
Visso MC 8 1107 2910
Monte Cavallo MC 10 145 3055
Cerreto di Spoleto PG 12 1075 4130
Ussita MC 12 444 4574
Castelsantangelo sul Nera MC 12 281 4855
Norcia PG 14 4957 9812
Pieve Torina MC 16 1458 11270
Fiordimonte MC 17 202 11472
Vallo di Nera PG 19 364 11836
Pievebovigliana MC 19 866 12702
Serravalle di Chienti MC 19 1070 13772
Fiastra MC 19 559 14331
Acquacanina MC 20 121 14452

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
55 Km E of Perugia (166134 inhabitants)
64 Km W of Teramo (54892 inhabitants)
69 Km NW of L'Aquila (69753 inhabitants)
90 Km SW of Ancona (100861 inhabitants)
91 Km NE of Viterbo (67173 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 2020-12-23
13:19:31
42.9 13 11 2021-02-26
14:56:14
Bollettino Sismico Italiano INGV 86207941
Reviewed
Rev100
ML 1.5 2020-12-23
13:19:31
42.9 13 11 2020-12-23
13:31:35
Sala Sismica INGV-Roma 85650851
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-23 13:19:31 ± 0.05
Latitude 42.90 ± 0.00
Longitude 13.00 ± 0.00
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 86207941

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 280
Semi-minor axis of confidence ellipse (meter) 261
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 58
Circular confidence region, given by single value of horizontal uncertainty (meter) 280
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 52
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 35
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.06745
Epicentral distance of station farthest from the epicenter (degree) 0.52341
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 38
Type of magnitude ML
Reference to an origin 86207941
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-12 17:57:54

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 30
Type of magnitude ML
Reference to an origin 85650851
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-23 13:31:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TERO.HHZ. 2020-12-23T13:19:49.00 0.1 undecidable manual S 122 0.5234 50 -0.11 90
IV.EL6.EHZ. 2020-12-23T13:19:46.70 0.1 undecidable manual S 10 0.4317 50 0.31 88
IV.MF5.EHZ. 2020-12-23T13:19:44.40 0.1 undecidable manual S 76 0.3453 50 0.57 84
IV.MOMA.HHZ. 2020-12-23T13:19:43.80 0.1 undecidable manual S 253 0.3318 50 0.35 89
IV.LNSS.HHZ. 2020-12-23T13:19:42.40 0.1 undecidable manual S 175 0.3022 50 -0.16 94
IV.TERO.HHZ. 2020-12-23T13:19:41.44 0.1 undecidable manual P 122 0.5234 50 -0.04 92
IV.PF6.EHE. 2020-12-23T13:19:41.70 0.1 undecidable manual S 31 0.2725 50 0.01 97
IV.ASSB.HHZ. 2020-12-23T13:19:41.90 0.1 undecidable manual S 299 0.2869 50 -0.21 93
IV.MURB.HHZ. 2020-12-23T13:19:41.02 0.1 undecidable manual P 316 0.5 50 -0.07 92
IV.CSP1.EHZ. 2020-12-23T13:19:40.80 0.1 undecidable manual S 38 0.2392 50 0.11 96
IV.GAVE.EHZ. 2020-12-23T13:19:40.20 0.1 undecidable manual S 201 0.2257 50 -0.1 96
IV.MMO1.EHZ. 2020-12-23T13:19:40.30 0.1 undecidable manual S 91 0.2374 50 -0.35 91
IV.MML1.HNZ. 2020-12-23T13:19:39.60 0.1 undecidable manual S 354 0.2104 50 -0.25 94
IV.EL6.EHZ. 2020-12-23T13:19:39.84 0.1 undecidable manual P 10 0.4317 50 -0.07 93
IV.MF5.EHZ. 2020-12-23T13:19:38.83 0.1 undecidable manual P 76 0.3453 50 0.4 88
IV.MOMA.HHZ. 2020-12-23T13:19:38.64 0.1 undecidable manual P 253 0.3318 50 0.43 88
IV.MC2.EHZ. 2020-12-23T13:19:37.70 0.1 undecidable manual S 87 0.1367 125 0.21 96
IV.CESI.HHZ. 2020-12-23T13:19:37.20 0.1 undecidable manual S 325 0.1232 128 0.12 98
IV.ASSB.HHZ. 2020-12-23T13:19:37.26 0.1 negative manual P 299 0.2869 50 -0.18 94
IV.FDMO.HHZ. 2020-12-23T13:19:37.50 0.1 undecidable manual S 25 0.1466 123 -0.29 94
IV.LNSS.HHZ. 2020-12-23T13:19:37.66 0.1 undecidable manual P 175 0.3022 50 -0.04 96
IV.CSP1.EHZ. 2020-12-23T13:19:36.46 0.1 undecidable manual P 38 0.2392 50 -0.16 95
IV.MML1.HNZ. 2020-12-23T13:19:36.04 0.1 negative manual P 354 0.2104 50 -0.09 97
IV.PF6.EHE. 2020-12-23T13:19:36.94 0.1 positive manual P 31 0.2725 50 -0.25 92
IV.MMO1.EHZ. 2020-12-23T13:19:36.53 0.1 undecidable manual P 91 0.2374 50 -0.06 97
IV.NRCA.HNZ. 2020-12-23T13:19:36.40 0.1 undecidable manual S 131 0.1079 132 -0.22 96
IV.GAVE.EHZ. 2020-12-23T13:19:36.35 0.1 positive manual P 201 0.2257 50 -0.04 97
IT.MTCL.HGZ. 2020-12-23T13:19:35.80 0.1 undecidable manual S 359 0.0899 137 -0.32 94
IV.FEMA.HNE. 2020-12-23T13:19:35.70 0.1 undecidable manual S 31 0.0674 145 0.12 99
IV.MC2.EHZ. 2020-12-23T13:19:34.86 0.1 positive manual P 87 0.1367 125 0.09 98
IT.MTCL.HGZ. 2020-12-23T13:19:34.05 0.1 undecidable manual P 359 0.0899 137 0.07 99
IV.CESI.HHZ. 2020-12-23T13:19:34.64 0.1 negative manual P 325 0.1232 128 0.11 98
IV.FDMO.HHZ. 2020-12-23T13:19:34.93 0.1 positive manual P 25 0.1466 123 -0.02 99
IV.NRCA.HNZ. 2020-12-23T13:19:34.29 0.1 negative manual P 131 0.1079 132 0.02 100
IV.FEMA.HNE. 2020-12-23T13:19:33.88 0.1 positive manual P 31 0.0674 145 0.21 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNN. ML:0 0.0007296559 0.096 AML other m 2020-12-23T13:19:36.51
IV.NRCA.HHN. ML:0 0.00075729955 0.1024 AML other m 2020-12-23T13:19:36.51
IV.NRCA.HNE. ML:0 0.000555746 0.0832 AML other m 2020-12-23T13:19:36.72
IV.NRCA.HHE. ML:0 0.00059191935 0.0768 AML other m 2020-12-23T13:19:36.72
IV.CESI.HHN. ML:0 0.00020074695 0.096 AML other m 2020-12-23T13:19:37.45
IV.CESI.HNN. ML:1.2 0.0001769956 0.1024 AML other m 2020-12-23T13:19:37.50
IV.FDMO.HHN. ML:0 0.0005725251 0.1792 AML other m 2020-12-23T13:19:37.81
IV.FDMO.HHE. ML:0 0.00050304795 0.1216 AML other m 2020-12-23T13:19:38.00
IV.CESI.HNE. ML:0 0.00016766285 0.192 AML other m 2020-12-23T13:19:37.70
IV.CESI.HHE. ML:0 0.00014713575 0.3008 AML other m 2020-12-23T13:19:39.40
IV.GAVE.EHN. ML:0 0.0002154737 0.16 AML other m 2020-12-23T13:19:40.45
IV.GAVE.HNE. ML:0 0.00039106285 0.192 AML other m 2020-12-23T13:19:40.53
IV.GAVE.EHE. ML:0 0.0004256338 0.1792 AML other m 2020-12-23T13:19:40.53
IV.CSP1.EHN. ML:0 0.00017098085 0.16 AML other m 2020-12-23T13:19:41.67
IV.CSP1.EHE. ML:0 0.0001432378 0.1024 AML other m 2020-12-23T13:19:41.72
IV.ASSB.HHN. ML:0 9.7359735E-5 0.0576 AML other m 2020-12-23T13:19:42.29
IV.ASSB.HHE. ML:0 9.978997E-5 0.096 AML other m 2020-12-23T13:19:42.58
IV.LNSS.HNE. ML:1.4 0.00011440424 0.1984 AML other m 2020-12-23T13:19:43.25
IV.LNSS.HHE. ML:0 0.000112789455 0.1984 AML other m 2020-12-23T13:19:43.25
IV.LNSS.HNN. ML:0 0.00013810897 0.7616 AML other m 2020-12-23T13:19:52.65
IV.LNSS.HHN. ML:0 8.2836145E-5 0.16 AML other m 2020-12-23T13:19:44.00
IV.MOMA.HHN. ML:0 6.274258E-5 0.3008 AML other m 2020-12-23T13:19:44.51
IV.MF5.EHE. ML:0 4.45957175E-5 0.3008 AML other m 2020-12-23T13:19:44.92
IV.GAVE.HNN. ML:0 0.000167869215 0.7424 AML other m 2020-12-23T13:19:44.94
IV.MOMA.HHE. ML:0 7.8286985E-5 1.8592 AML other m 2020-12-23T13:19:44.96
IV.MF5.EHN. ML:0 6.7628535E-5 0.2816 AML other m 2020-12-23T13:19:44.96
IV.EL6.EHE. ML:0 0.00014190185 1.6224 AML other m 2020-12-23T13:19:47.99
IV.EL6.EHN. ML:0 0.0001798316 0.2368 AML other m 2020-12-23T13:19:47.70
IV.MURB.HHE. ML:0 4.525679E-5 1.6416 AML other m 2020-12-23T13:19:49.98
IV.TERO.HHE. ML:0 1.4920235E-5 1.904 AML other m 2020-12-23T13:19:50.01
IV.TERO.HHN. ML:0 2.37112255E-5 0.1024 AML other m 2020-12-23T13:19:50.39
IV.MURB.HHN. ML:0 5.547435E-5 0.2432 AML other m 2020-12-23T13:19:51.98
IV.MOMA.HNN. ML:1.6 0.0001657409 1.12 AML other m 2020-12-23T13:19:55.10
IV.MOMA.HNE. ML:1.5 0.000128638995 0.6464 AML other m 2020-12-23T13:19:53.35
IV.MURB.HNE. ML:1.8 0.0001544794 0.9792 AML other m 2020-12-23T13:19:50.42
IV.MURB.HNN. ML:1.6 9.251746E-5 0.4608 AML other m 2020-12-23T13:20:00.31
IV.TERO.HNN. ML:2 0.000188001 1.28 AML other m 2020-12-23T13:19:58.17
IV.TERO.HNE. ML:1.7 0.00010391465 0.8192 AML other m 2020-12-23T13:19:56.03
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download