Earthquake with magnitude of ML 1.3 on date 08-12-2020 and time 20:13:37 (Italy) in region 2 km SE Norcia (PG)

A magnitude ML 1.3 earthquake occured in region: 2 km SE Norcia (PG), on

  • 08-12-2020 19:13:37 (UTC)
  • 08-12-2020 20:13:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.78, 13.1 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
Norcia PG 2 4957 4957
Cascia PG 10 3217 8174
Preci PG 12 724 8898
Castelsantangelo sul Nera MC 14 281 9179
Accumoli RI 15 667 9846
Poggiodomo PG 15 117 9963
Cerreto di Spoleto PG 16 1075 11038
Arquata del Tronto AP 16 1178 12216
Visso MC 17 1107 13323
Ussita MC 19 444 13767
Sellano PG 19 1079 14846
Cittareale RI 19 482 15328
Monteleone di Spoleto PG 19 599 15927
Vallo di Nera PG 19 364 16291

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km SE of Foligno (57155 inhabitants)
44 Km NE of Terni (111501 inhabitants)
51 Km W of Teramo (54892 inhabitants)
54 Km NW of L'Aquila (69753 inhabitants)
68 Km SE of Perugia (166134 inhabitants)
91 Km E of Viterbo (67173 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
92 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km N of Tivoli (56533 inhabitants)
98 Km W of Pescara (121014 inhabitants)
99 Km SW of Ancona (100861 inhabitants)
100 Km W of Chieti (51815 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.3 2020-12-08
19:13:37
42.7802 13.1003 11 2020-12-08
19:19:04
Sala Sismica INGV-Roma 85296641
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-08 19:13:37 ± 0.05
Latitude 42.7802 ± 0.0036
Longitude 13.1003 ± 0.0049
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 85296641

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 460
Semi-minor axis of confidence ellipse (meter) 320
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 297
Circular confidence region, given by single value of horizontal uncertainty (meter) 460
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.05396
Epicentral distance of station farthest from the epicenter (degree) 0.402
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 17
Type of magnitude ML
Reference to an origin 85296641
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-08 19:19:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MF5.EHZ. 2020-12-08T19:13:45.41 0.6 positive manual P 52 0.3354 50 0.46 44
IV.GAVE.EHZ. 2020-12-08T19:13:45.47 0.3 undecidable manual S 240 0.1754 50 0.01 75
IV.LNSS.HHZ. 2020-12-08T19:13:45.61 0.3 undecidable manual S 194 0.1826 50 -0.07 74
IV.TERO.HHZ. 2020-12-08T19:13:45.91 0.1 undecidable manual P 113 0.402 50 -0.18 93
IV.CSP1.EHZ. 2020-12-08T19:13:44.62 1.0 positive manual P 14 0.3211 50 -0.09 24
IV.FDMO.HHZ. 2020-12-08T19:13:43.50 1.0 negative manual P 358 0.2563 50 -0.1 24
IV.SMA1.EHZ. 2020-12-08T19:13:43.21 0.6 negative manual P 131 0.2284 50 0.09 49
IV.CESI.HHZ. 2020-12-08T19:13:43.66 0.1 positive manual P 328 0.2662 50 -0.12 97
IV.MTRA.EHZ. 2020-12-08T19:13:42.91 0.6 undecidable manual P 96 0.2185 50 -0.05 50
IV.LNSS.HHZ. 2020-12-08T19:13:42.40 0.1 undecidable manual P 194 0.1826 50 0.06 99
IV.MMO1.EHZ. 2020-12-08T19:13:42.69 0.6 negative manual P 54 0.2041 50 -0.02 50
IV.GAVE.EHZ. 2020-12-08T19:13:42.44 1.0 positive manual P 240 0.1754 50 0.23 24
IV.NRCA.HNZ. 2020-12-08T19:13:41.97 0.3 undecidable manual S 11 0.054 151 -0.13 75
IV.NRCA.HNZ. 2020-12-08T19:13:40.42 0.1 negative manual P 11 0.054 151 0.15 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:2 0.001585 0.06 AML other m 2020-12-08T19:13:42.04
IV.NRCA.HNN. ML:2 0.00146 0.08 AML other m 2020-12-08T19:13:42.04
IV.NRCA.HHE. ML:1.8 0.0010915 0.18 AML other m 2020-12-08T19:13:42.17
IV.NRCA.HNE. ML:1.8 0.001074 0.16 AML other m 2020-12-08T19:13:42.17
IV.GAVE.EHN. ML:1.2 0.00010895 1.78 AML other m 2020-12-08T19:13:45.10
IV.GAVE.EHE. ML:1.4 0.0001675 0.6 AML other m 2020-12-08T19:13:47.32
IV.CESI.HHN. ML:1.5 0.0001655 1.06 AML other m 2020-12-08T19:13:48.23
IV.LNSS.HHE. ML:1.2 9.887477E-5 0.128 AML other m 2020-12-08T19:13:46.31
IV.LNSS.HHN. ML:1.2 0.00010288562 0.1408 AML other m 2020-12-08T19:13:46.52
IV.LNSS.HNE. ML:1.2 9.8009205E-5 0.1024 AML other m 2020-12-08T19:13:46.31
IV.LNSS.HNN. ML:1.4 0.0001622529 1.3696 AML other m 2020-12-08T19:13:45.55
IV.GAVE.HNE. ML:1.4 0.00018328195 0.1792 AML other m 2020-12-08T19:13:47.32
IV.MTRA.EHE. ML:1.1 7.1677215E-5 0.0768 AML other m 2020-12-08T19:13:47.82
IV.MTRA.EHN. ML:1 6.7262815E-5 0.0768 AML other m 2020-12-08T19:13:47.80
IV.FDMO.HHE. ML:0.8 3.6773615E-5 0.1536 AML other m 2020-12-08T19:13:48.88
IV.FDMO.HHN. ML:0.9 4.076577E-5 0.256 AML other m 2020-12-08T19:13:47.72
IV.TERO.HHE. ML:0.8 2.105391E-5 0.064 AML other m 2020-12-08T19:13:52.72
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