Earthquake with magnitude of ML 0.4 on date 18-12-2019 and time 17:25:38 (Italy) in region 1 km E Castelsantangelo sul Nera (MC)

A magnitude ML 0.4 earthquake occured in region: 1 km E Castelsantangelo sul Nera (MC), on

  • 18-12-2019 16:25:38 (UTC)
  • 18-12-2019 17:25:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.89, 13.17 at 13 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 1 281 281
Ussita MC 6 444 725
Visso MC 8 1107 1832
Preci PG 11 724 2556
Bolognola MC 12 142 2698
Norcia PG 13 4957 7655
Montemonaco AP 13 604 8259
Montegallo AP 15 523 8782
Montefortino FM 15 1178 9960
Acquacanina MC 15 121 10081
Fiastra MC 16 559 10640
Arquata del Tronto AP 17 1178 11818
Fiordimonte MC 17 202 12020
Monte Cavallo MC 18 145 12165
Amandola FM 18 3629 15794
Sarnano MC 19 3264 19058
Pieve Torina MC 19 1458 20516
Sellano PG 20 1079 21595

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
51 Km NW of Teramo (54892 inhabitants)
56 Km NE of Terni (111501 inhabitants)
63 Km NW of L'Aquila (69753 inhabitants)
68 Km E of Perugia (166134 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
98 Km W of Pescara (121014 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 0.4 2019-12-18
16:25:38
42.89 13.17 13 2019-12-18
16:31:01
Sala Sismica INGV-Roma 74767111
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-18 16:25:38 ± 0.17
Latitude 42.89 ± 0.01
Longitude 13.17 ± 0.01
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 74767111

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 730
Semi-minor axis of confidence ellipse (meter) 663
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 189
Circular confidence region, given by single value of horizontal uncertainty (meter) 730
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 13
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
Epicentral distance of station farthest from the epicenter (degree) 0.23292
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.2
Num. used stations 2
Type of magnitude ML
Reference to an origin 74767111
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-18 16:31:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FOSV.EHZ. 2019-12-18T16:25:50.76 3.0 undecidable manual P 0.01 0
IV.CSP1.EHZ. 2019-12-18T16:25:46.57 0.3 undecidable manual S 8 0.1996 100 -0.25 71
IV.FDMO.HHZ. 2019-12-18T16:25:45.43 0.3 undecidable manual S 337 0.1547 108 -0.09 74
IV.FEMA.HNZ. 2019-12-18T16:25:44.44 0.3 undecidable manual S 308 0.1106 122 0.11 74
IV.MF5.EHZ. 2019-12-18T16:25:44.30 0.1 undecidable manual P 66 0.2329 97 0.49 88
IV.MMO1.EHZ. 2019-12-18T16:25:44.13 0.1 undecidable manual S 87 0.116 120 -0.33 93
IV.NRCA.HNZ. 2019-12-18T16:25:43.32 0.1 undecidable manual S 214 0.0719 139 -0.13 97
IV.CSP1.EHZ. 2019-12-18T16:25:43.05 0.1 undecidable manual P 8 0.1996 100 -0.21 95
IV.FDMO.HHZ. 2019-12-18T16:25:42.73 0.3 undecidable manual P 337 0.1547 108 0.22 71
IV.MC2.EHZ. 2019-12-18T16:25:42.98 0.1 undecidable manual S 39 0.0234 166 0.21 99
IV.MC2.EHZ. 2019-12-18T16:25:41.05 0.1 undecidable manual P 39 0.0234 166 0.13 100
IV.MMO1.EHZ. 2019-12-18T16:25:41.68 0.1 undecidable manual P 87 0.116 120 -0.21 95
IV.NRCA.HNZ. 2019-12-18T16:25:41.27 0.1 undecidable manual P 214 0.0719 139 -0.04 99
IV.FEMA.HNZ. 2019-12-18T16:25:41.93 0.3 undecidable manual P 308 0.1106 122 0.1 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSP1.EHE. ML:0.2 1.23754345E-5 0.128 AML other m 2019-12-18T16:25:46.76
IV.CSP1.EHN. ML:0.5 2.20026985E-5 0.3968 AML other m 2019-12-18T16:25:46.86
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