Earthquake with magnitude of ML 1.6 on date 21-12-2019 and time 16:15:18 (Italy) in region 3 km W Castelsantangelo sul Nera (MC)

A magnitude ML 1.6 earthquake occured in region: 3 km W Castelsantangelo sul Nera (MC), on

  • 21-12-2019 15:15:18 (UTC)
  • 21-12-2019 16:15:18 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9, 13.12 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
Castelsantangelo sul Nera MC 3 281 281
Visso MC 4 1107 1388
Ussita MC 5 444 1832
Preci PG 7 724 2556
Norcia PG 13 4957 7513
Monte Cavallo MC 14 145 7658
Bolognola MC 14 142 7800
Acquacanina MC 15 121 7921
Fiordimonte MC 15 202 8123
Fiastra MC 15 559 8682
Sellano PG 15 1079 9761
Pieve Torina MC 17 1458 11219
Montemonaco AP 17 604 11823
Pievebovigliana MC 18 866 12689
Cerreto di Spoleto PG 19 1075 13764
Montefortino FM 19 1178 14942
Montegallo AP 19 523 15465

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Foligno (57155 inhabitants)
54 Km NE of Terni (111501 inhabitants)
55 Km NW of Teramo (54892 inhabitants)
63 Km E of Perugia (166134 inhabitants)
66 Km NW of L'Aquila (69753 inhabitants)
86 Km SW of Ancona (100861 inhabitants)
95 Km W of Montesilvano (53738 inhabitants)
99 Km NE of Viterbo (67173 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.6 2019-12-21
15:15:18
42.9 13.12 11 2019-12-21
15:26:03
Sala Sismica INGV-Roma 74857681
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-21 15:15:18 ± 0.05
Latitude 42.90 ± 0.00
Longitude 13.12 ± 0.00
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 74857681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 409
Semi-minor axis of confidence ellipse (meter) 273
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 63
Circular confidence region, given by single value of horizontal uncertainty (meter) 410
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 113
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.05486
Epicentral distance of station farthest from the epicenter (degree) 0.54409
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 74857681
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-21 15:26:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RM33.EHN. 2019-12-21T15:15:33.49 0.3 undecidable manual S 170 0.402 50 0.34 66
IV.LNSS.HHE. 2019-12-21T15:15:30.20 0.3 undecidable manual S 190 0.3058 50 -0.12 71
IV.MF5.EHZ. 2019-12-21T15:15:29.65 0.3 undecidable manual S 72 0.2653 50 0.54 65
IV.MMUR.HNZ. 2019-12-21T15:15:29.61 0.3 undecidable manual P 351 0.5441 50 0.12 68
IV.MML1.EHZ. 2019-12-21T15:15:28.17 0.3 undecidable manual S 333 0.2338 50 -0.01 74
IV.CSP1.EHZ. 2019-12-21T15:15:26.85 0.3 undecidable manual S 19 0.1988 50 -0.28 70
IV.CESI.HHZ. 2019-12-21T15:15:26.79 0.6 undecidable manual S 303 0.1844 50 0.09 49
IV.RM33.EHN. 2019-12-21T15:15:26.93 0.1 undecidable manual P 170 0.402 50 -0.12 93
IV.MMO1.EHZ. 2019-12-21T15:15:25.37 0.3 undecidable manual S 92 0.1547 122 -0.38 69
IV.LNSS.HHE. 2019-12-21T15:15:25.15 0.1 undecidable manual P 190 0.3058 50 -0.27 92
IT.MTCL.HGZ. 2019-12-21T15:15:24.67 0.1 undecidable manual S 317 0.1232 128 -0.08 99
IV.MML1.EHZ. 2019-12-21T15:15:24.04 0.1 undecidable manual P 333 0.2338 50 -0.14 96
IV.FDMO.HHZ. 2019-12-21T15:15:24.90 0.3 undecidable manual S 351 0.134 126 -0.17 73
IV.MF5.EHZ. 2019-12-21T15:15:24.93 0.6 positive manual P 72 0.2653 50 0.21 47
IV.CESI.HHZ. 2019-12-21T15:15:23.35 0.6 negative manual P 303 0.1844 50 0.03 49
IV.CSP1.EHZ. 2019-12-21T15:15:23.46 0.3 undecidable manual P 19 0.1988 50 -0.11 73
IV.MC2.EHZ. 2019-12-21T15:15:23.19 0.6 undecidable manual S 82 0.0549 151 0.2 49
IV.NRCA.HNZ. 2019-12-21T15:15:23.16 0.6 undecidable manual S 181 0.071 144 -0.17 49
IV.FEMA.HNE. 2019-12-21T15:15:23.69 0.3 undecidable manual S 320 0.0755 142 0.26 72
IT.MTCL.HGZ. 2019-12-21T15:15:22.23 0.1 negative manual P 317 0.1232 128 0.03 100
IV.FDMO.HHZ. 2019-12-21T15:15:22.29 0.1 undecidable manual P 351 0.134 126 -0.1 98
IV.MMO1.EHZ. 2019-12-21T15:15:22.59 0.1 negative manual P 92 0.1547 122 -0.19 96
IV.NRCA.HNZ. 2019-12-21T15:15:21.45 0.1 positive manual P 181 0.071 144 0.07 100
IV.FEMA.HNE. 2019-12-21T15:15:21.70 0.1 undecidable manual P 320 0.0755 142 0.26 96
IV.MC2.EHZ. 2019-12-21T15:15:21.40 0.1 undecidable manual P 82 0.0549 151 0.21 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.9 0.001144988 0.128 AML other m 2019-12-21T15:15:24.08
IV.NRCA.HHN. ML:2.2 0.001964565 0.1152 AML other m 2019-12-21T15:15:23.24
IV.NRCA.HNE. ML:1.9 0.0010852025 0.128 AML other m 2019-12-21T15:15:24.08
IV.NRCA.HNN. ML:2.2 0.0019595645 0.128 AML other m 2019-12-21T15:15:23.24
IV.FDMO.HHE. ML:1.3 0.00020324965 0.1792 AML other m 2019-12-21T15:15:25.05
IV.FDMO.HHN. ML:1.1 0.0001151456 0.1664 AML other m 2019-12-21T15:15:25.05
IV.CESI.HNE. ML:1.4 0.000169198795 0.1024 AML other m 2019-12-21T15:15:26.96
IV.CESI.HNN. ML:1.5 0.00022079915 0.1152 AML other m 2019-12-21T15:15:27.01
IV.CESI.HHE. ML:1.5 0.00020898175 0.1024 AML other m 2019-12-21T15:15:26.95
IV.CESI.HHN. ML:1.7 0.00032660155 0.1792 AML other m 2019-12-21T15:15:26.94
IV.CSP1.EHE. ML:1.3 0.000146923875 0.1024 AML other m 2019-12-21T15:15:27.11
IV.CSP1.EHN. ML:1.4 0.0001750852 0.1408 AML other m 2019-12-21T15:15:27.17
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