Earthquake with magnitude of ML 0.4 on date 31-03-2020 and time 23:37:33 (Italy) in region 1 km N Castelsantangelo sul Nera (MC)

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

  • 31-03-2020 21:37:33 (UTC)
  • 31-03-2020 23:37:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9, 13.15 at 3 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 5 444 725
Visso MC 6 1107 1832
Preci PG 10 724 2556
Bolognola MC 12 142 2698
Norcia PG 13 4957 7655
Acquacanina MC 14 121 7776
Montemonaco AP 14 604 8380
Fiastra MC 15 559 8939
Fiordimonte MC 16 202 9141
Monte Cavallo MC 16 145 9286
Montefortino FM 16 1178 10464
Montegallo AP 16 523 10987
Pieve Torina MC 18 1458 12445
Sellano PG 18 1079 13524
Pievebovigliana MC 19 866 14390
Amandola FM 19 3629 18019
Arquata del Tronto AP 19 1178 19197
Sarnano MC 19 3264 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)
56 Km NE of Terni (111501 inhabitants)
65 Km NW of L'Aquila (69753 inhabitants)
66 Km E of Perugia (166134 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
92 Km W of Montesilvano (53738 inhabitants)
100 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 2020-03-31
21:37:33
42.9 13.15 3 2020-03-31
21:46:17
Sala Sismica INGV-Roma 77736371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-31 21:37:33 ± 0.13
Latitude 42.90 ± 0.00
Longitude 13.15 ± 0.00
Depth (km) 3 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77736371

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 479
Semi-minor axis of confidence ellipse (meter) 160
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 24
Circular confidence region, given by single value of horizontal uncertainty (meter) 480
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 109
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.24731
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 77736371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-31 21:46:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VCEL.EHZ. 2020-03-31T21:37:57.52 3.0 undecidable manual S -3.02 0
IV.MF5.EHZ. 2020-03-31T21:37:43.34 0.3 undecidable manual S 70 0.2401 97 0.43 66
IV.MML1.HNZ. 2020-03-31T21:37:43.16 0.3 undecidable manual S 328 0.2473 97 -0.03 72
IV.PF6.. 2020-03-31T21:37:42.19 3.0 undecidable manual S 0
IV.CESI.HHZ. 2020-03-31T21:37:41.81 0.3 undecidable manual S 299 0.2068 98 0.15 71
IV.MF5.EHZ. 2020-03-31T21:37:39.48 0.6 undecidable manual P 70 0.2401 97 0.5 44
IT.MTCL.HGZ. 2020-03-31T21:37:39.20 0.3 undecidable manual S 309 0.143 102 -0.03 74
IV.FDMO.HHZ. 2020-03-31T21:37:39.53 0.3 undecidable manual S 340 0.1403 102 0.41 68
IV.PF6.. 2020-03-31T21:37:39.03 3.0 undecidable manual P 0
IV.MML1.HNZ. 2020-03-31T21:37:38.79 0.3 undecidable manual P 328 0.2473 97 -0.35 68
IV.CESI.HHZ. 2020-03-31T21:37:38.04 0.3 undecidable manual P 299 0.2068 98 -0.22 70
IV.MMO1.EHZ. 2020-03-31T21:37:38.50 0.3 undecidable manual S 92 0.1277 103 -0.16 72
IV.NRCA.HHZ. 2020-03-31T21:37:37.07 0.3 undecidable manual S 201 0.0764 111 0.32 70
IV.MMO1.EHZ. 2020-03-31T21:37:36.25 0.1 undecidable manual P 92 0.1277 103 -0.27 94
IT.MTCL.HGZ. 2020-03-31T21:37:36.77 0.1 undecidable manual P 309 0.143 102 -0.08 97
IV.FDMO.HHZ. 2020-03-31T21:37:36.75 0.3 undecidable manual P 340 0.1403 102 -0.04 74
IV.NRCA.HHZ. 2020-03-31T21:37:35.42 0.1 undecidable manual P 201 0.0764 111 0 100
IV.MC2.EHZ. 2020-03-31T21:37:35.10 0.3 undecidable manual S 75 0.0279 137 -0.07 75
IV.MC2.EHZ. 2020-03-31T21:37:34.37 0.1 positive manual P 75 0.0279 137 -0.14 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:0 0.0003395376 0.1024 AML other m 2020-03-31T21:37:37.68
IV.NRCA.HHN. ML:0 0.00018600055 0.1152 AML other m 2020-03-31T21:37:37.61
IV.NRCA.HNN. ML:0 0.00019997195 0.1152 AML other m 2020-03-31T21:37:37.68
IV.FDMO.HHE. ML:0.3 1.8312054E-5 0.192 AML other m 2020-03-31T21:37:41.62
IV.FDMO.HHN. ML:0.4 2.538955E-5 0.1792 AML other m 2020-03-31T21:37:41.12
IV.CESI.HHE. ML:0.3 1.39659177E-5 0.1024 AML other m 2020-03-31T21:37:42.18
IV.CESI.HHN. ML:0.6 2.274975E-5 0.128 AML other m 2020-03-31T21:37:42.28
IV.NRCA.HNE. ML:0 0.00032669045 0.128 AML other m 2020-03-31T21:37:37.22
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