Earthquake with magnitude of Md 1.4 on date 12-02-2020 and time 02:20:28 (UTC) in region 2 km N Castelsantangelo sul Nera (MC)

A magnitude Md 1.4 earthquake occured in region: 2 km N Castelsantangelo sul Nera (MC), on

  • 12-02-2020 02:20:28 (UTC)
  • 12-02-2020 03:20:28 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.91, 13.16 at 4 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 2 281 281
Ussita MC 4 444 725
Visso MC 6 1107 1832
Preci PG 10 724 2556
Bolognola MC 11 142 2698
Acquacanina MC 14 121 2819
Montemonaco AP 14 604 3423
Norcia PG 14 4957 8380
Fiastra MC 14 559 8939
Montefortino FM 15 1178 10117
Fiordimonte MC 15 202 10319
Monte Cavallo MC 16 145 10464
Montegallo AP 16 523 10987
Pieve Torina MC 18 1458 12445
Amandola FM 18 3629 16074
Pievebovigliana MC 18 866 16940
Sarnano MC 18 3264 20204
Arquata del Tronto AP 19 1178 21382
Sellano PG 19 1079 22461

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
53 Km NW of Teramo (54892 inhabitants)
57 Km NE of Terni (111501 inhabitants)
65 Km NW of L'Aquila (69753 inhabitants)
66 Km E of Perugia (166134 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
92 Km W of Montesilvano (53738 inhabitants)
99 Km NW 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 Md 1.4 2020-02-12
02:20:28
42.91 13.16 4 2020-02-12
02:45:02
Sala Sismica INGV-Roma 76450841
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-12 02:20:28 ± 0.15
Latitude 42.91 ± 0.01
Longitude 13.16 ± 0.01
Depth (km) 4 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76450841

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 610
Semi-minor axis of confidence ellipse (meter) 149
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 344
Circular confidence region, given by single value of horizontal uncertainty (meter) 610
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 133
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.02248
Epicentral distance of station farthest from the epicenter (degree) 0.30667
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 6
Type of magnitude Md
Reference to an origin 76450841
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-12 02:45:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SMA1.EHZ. 2020-02-12T02:20:40.98 0.6 undecidable manual S 155 0.3067 97 0.09 47
IV.MF5.EHZ. 2020-02-12T02:20:38.73 0.6 undecidable manual S 70 0.2338 99 0.61 42
IV.CESI.HHZ. 2020-02-12T02:20:37.43 0.6 undecidable manual S 297 0.2095 100 0.26 46
IV.SMA1.EHZ. 2020-02-12T02:20:35.26 0.6 negative manual P 155 0.3067 97 -0.6 41
IV.MF5.EHZ. 2020-02-12T02:20:34.37 1.0 undecidable manual P 70 0.2338 99 0.11 24
IV.CESI.HHZ. 2020-02-12T02:20:33.48 0.3 negative manual P 297 0.2095 100 -0.23 70
IV.MMO1.EHZ. 2020-02-12T02:20:33.98 0.6 undecidable manual S 94 0.1232 107 0.02 49
IV.NRCA.HHZ. 2020-02-12T02:20:32.66 0.1 undecidable manual S 203 0.0818 114 0.21 96
IV.NRCA.HHZ. 2020-02-12T02:20:31.03 0.1 undecidable manual P 203 0.0818 114 0.04 99
IV.MMO1.EHZ. 2020-02-12T02:20:31.68 0.6 undecidable manual P 94 0.1232 107 -0.18 48
IV.MC2.EHZ. 2020-02-12T02:20:30.61 0.1 undecidable manual S 83 0.0225 149 -0.05 100
IV.MC2.EHZ. 2020-02-12T02:20:29.80 0.1 positive manual P 83 0.0225 149 -0.15 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MC2.EHZ. Md:1.2 11 END duration s
IV.NRCA.HHZ. Md:1.3 11 END duration s
IV.MMO1.EHZ. Md:1.5 14 END duration s
IV.CESI.HHZ. Md:1.4 12 END duration s
IV.MF5.EHZ. Md:1.6 15 END duration s
IV.SMA1.EHZ. Md:1.6 14 END duration s
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