Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 30-12-2019 and time 05:37:35 (Italy) in region 4 km NE Norcia (PG)

A magnitude ML 1.4 earthquake occured in region: 4 km NE Norcia (PG), on

  • 30-12-2019 04:37:35 (UTC)
  • 30-12-2019 05:37:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8260, 13.1220 at 10 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 4 4957 4957
Castelsantangelo sul Nera MC 8 281 5238
Preci PG 9 724 5962
Visso MC 12 1107 7069
Ussita MC 13 444 7513
Cascia PG 15 3217 10730
Arquata del Tronto AP 16 1178 11908
Cerreto di Spoleto PG 17 1075 12983
Sellano PG 17 1079 14062
Montegallo AP 17 523 14585
Accumoli RI 18 667 15252
Montemonaco AP 19 604 15856
Poggiodomo PG 20 117 15973

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
49 Km NE of Terni (111501 inhabitants)
51 Km W of Teramo (54892 inhabitants)
57 Km NW of L'Aquila (69753 inhabitants)
67 Km E of Perugia (166134 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
94 Km SW of Ancona (100861 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
97 Km NE of Guidonia Montecelio (88673 inhabitants)
98 Km W of Pescara (121014 inhabitants)
99 Km N of Tivoli (56533 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 1.4 2019-12-30
04:37:35		 42.8263 13.1218 10 2020-02-28
16:42:24		 Bollettino Sismico Italiano INGV 76434641
Reviewed
Rev100 		ML 1.7 2019-12-30
04:37:35		 42.8222 13.1113 10 2019-12-30
04:41:18		 Sala Sismica INGV-Roma 75102721
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-30 04:37:35 ± 0.08
Latitude 42.8263 ± 0.0045
Longitude 13.1218 ± 0.0098
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 76434641

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 760
Semi-minor axis of confidence ellipse (meter) 470
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 84
Circular confidence region, given by single value of horizontal uncertainty (meter) 760.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 87
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00899
Epicentral distance of station farthest from the epicenter (degree) 0.29498
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 75102721
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-30 04:41:18

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 76434641
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-02-11 14:35:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LNSS.HNZ. 2019-12-30T04:37:45.03 0.6 undecidable manual S 195 25.6521 50 0.15 47
IV.CSP1.EHZ. 2019-12-30T04:37:45.85 0.1 undecidable manual S 13 30.2475 50 -0.24 93
IV.CESI.HHZ. 2019-12-30T04:37:45.13 0.1 undecidable manual S 318 26.5512 50 0.02 97
IV.FDMO.HHZ. 2019-12-30T04:37:43.95 0.6 undecidable manual S 353 23.4543 113 -0.29 46
IV.MF5.EHZ. 2019-12-30T04:37:42.36 0.6 negative manual P 57 32.745 50 0.4 44
IV.CESI.HHZ. 2019-12-30T04:37:41.05 0.1 positive manual P 318 26.5512 50 0.06 97
IV.CSP1.EHZ. 2019-12-30T04:37:41.51 0.1 undecidable manual P 13 30.2475 50 -0.05 97
IV.GAVE.EHN. 2019-12-30T04:37:40.89 0.3 undecidable manual P 231 23.754 113 0.35 69
IV.MC2.EHZ. 2019-12-30T04:37:40.97 0.1 undecidable manual S 30 10.878 133 0.44 92
IV.FDMO.HHZ. 2019-12-30T04:37:40.38 0.1 positive manual P 353 23.4543 113 -0.11 96
IV.T1299.HNN. 2019-12-30T04:37:40.43 0.6 undecidable manual P 148 24.9528 50 -0.33 46
IV.LNSS.HNZ. 2019-12-30T04:37:40.99 0.3 undecidable manual P 195 25.6521 50 0.13 71
IV.MTRA.EHZ. 2019-12-30T04:37:40.49 0.1 positive manual P 109 23.6541 113 -0.03 98
IV.SMA1.EHN. 2019-12-30T04:37:40.81 0.3 undecidable manual P 141 27.8499 50 -0.38 68
IV.NRCA.HNZ. 2019-12-30T04:37:38.47 0.1 undecidable manual S 322 0.999 174 -0.43 92
IV.MC2.EHZ. 2019-12-30T04:37:38.54 0.1 positive manual P 30 10.878 133 0.19 97
IV.NRCA.HNZ. 2019-12-30T04:37:37.54 0.1 negative manual P 322 0.999 174 0.13 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNE. ML:1.8 0.001216424 0.1504 AML other m 2019-12-30T04:37:38.55
IV.NRCA.HNN. ML:1.4 0.0005092305499999999 0.08 AML other m 2019-12-30T04:37:38.90
IV.NRCA.HHN. ML:1.4 0.0005357003500000001 0.0576 AML other m 2019-12-30T04:37:38.90
IV.NRCA.HHE. ML:1.8 0.001223298 0.1408 AML other m 2019-12-30T04:37:38.68
IV.FDMO.HHE. ML:0.9 0.000057487440000000004 3.04 AML other m 2019-12-30T04:37:46.21
IV.FDMO.HHN. ML:0.8 0.000035969915 1.1776 AML other m 2019-12-30T04:37:53.08
IV.MTRA.EHN. ML:1.0 0.00006363233 1.92 AML other m 2019-12-30T04:37:47.16
IV.MTRA.HNN. ML:1.3 0.0001201461 0.7104 AML other m 2019-12-30T04:37:42.58
IV.MTRA.EHE. ML:1.2 0.00009884938500000001 1.0816 AML other m 2019-12-30T04:37:42.04
IV.MTRA.HNE. ML:1.4 0.00017488332000000002 1.12 AML other m 2019-12-30T04:37:42.04
IV.CESI.HHN. ML:1.0 0.000048366259999999995 1.6 AML other m 2019-12-30T04:37:42.79
IV.CESI.HHE. ML:1.2 0.000088387305 1.68 AML other m 2019-12-30T04:37:45.75
IV.CESI.HNE. ML:1.6 0.00019594705000000002 1.6704 AML other m 2019-12-30T04:37:52.22
IV.CESI.HNN. ML:1.5 0.00017316290000000002 0.752 AML other m 2019-12-30T04:37:51.25
IV.CSP1.EHE. ML:1.3 0.00010594123499999999 1.8208 AML other m 2019-12-30T04:37:57.70
IV.CSP1.EHN. ML:1.2 0.000077289605 7.4816 AML other m 2019-12-30T04:37:49.60
IV.MF5.EHN. ML:2.1 0.00054838565 9.5008 AML other m 2019-12-30T04:37:56.12
IV.MF5.EHE. ML:2.1 0.00052092189 15.8624 AML other m 2019-12-30T04:37:59.13
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