Earthquake with magnitude of ML 0.9 on date 21-03-2020 and time 23:38:35 (Italy) in region 2 km W Castelsantangelo sul Nera (MC)

A magnitude ML 0.9 earthquake occured in region: 2 km W Castelsantangelo sul Nera (MC), on

  • 21-03-2020 22:38:35 (UTC)
  • 21-03-2020 23:38:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9, 13.14 at 7 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 5 444 725
Visso MC 5 1107 1832
Preci PG 8 724 2556
Norcia PG 12 4957 7513
Bolognola MC 13 142 7655
Acquacanina MC 15 121 7776
Monte Cavallo MC 15 145 7921
Fiastra MC 15 559 8480
Montemonaco AP 16 604 9084
Fiordimonte MC 16 202 9286
Sellano PG 17 1079 10365
Montegallo AP 17 523 10888
Montefortino FM 18 1178 12066
Pieve Torina MC 18 1458 13524
Pievebovigliana MC 19 866 14390
Arquata del Tronto AP 19 1178 15568
Cerreto di Spoleto PG 20 1075 16643

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Foligno (57155 inhabitants)
54 Km NW of Teramo (54892 inhabitants)
55 Km NE of Terni (111501 inhabitants)
65 Km NW of L'Aquila (69753 inhabitants)
65 Km E of Perugia (166134 inhabitants)
86 Km SW of Ancona (100861 inhabitants)
93 Km W of Montesilvano (53738 inhabitants)
100 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 0.9 2020-03-21
22:38:35
42.9 13.14 7 2020-03-21
22:46:53
Sala Sismica INGV-Roma 77446881
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-21 22:38:35 ± 0.09
Latitude 42.90 ± 0.00
Longitude 13.14 ± 0.00
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77446881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 330
Semi-minor axis of confidence ellipse (meter) 14
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 247
Circular confidence region, given by single value of horizontal uncertainty (meter) 330
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 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.04047
Epicentral distance of station farthest from the epicenter (degree) 0.30667
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 77446881
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-21 22:46:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.LNSS.HHE. 2020-03-21T22:38:46.87 0.3 undecidable manual S 193 0.3049 101 -0.4 68
IV.T1299.HNE. 2020-03-21T22:38:46.72 0.3 undecidable manual S 158 0.286 102 0.15 72
IV.MF5.EHZ. 2020-03-21T22:38:45.77 0.3 undecidable manual S 70 0.2527 104 0.46 68
IV.MTRA.EHE. 2020-03-21T22:38:44.71 0.6 undecidable manual S 127 0.2392 104 -0.08 49
IV.PF6.EHE. 2020-03-21T22:38:44.54 0.3 undecidable manual S 10 0.2419 104 -0.36 69
IV.MML1.EHZ. 2020-03-21T22:38:44.76 0.3 undecidable manual S 331 0.2446 104 -0.25 71
IV.CSP1.EHZ. 2020-03-21T22:38:43.22 0.3 undecidable manual S 15 0.1988 107 -0.08 74
IV.CESI.HHZ. 2020-03-21T22:38:43.51 0.3 undecidable manual S 302 0.1988 107 0.2 72
IV.SMA1.EHN. 2020-03-21T22:38:42.72 0.3 undecidable manual P 151 0.3067 101 0.48 67
IV.LNSS.HHE. 2020-03-21T22:38:41.76 0.6 undecidable manual P 193 0.3049 101 -0.45 45
IT.MTCL.HGE. 2020-03-21T22:38:41.17 0.3 undecidable manual S 313 0.1367 114 0.1 75
IV.MF5.EHZ. 2020-03-21T22:38:41.15 0.3 undecidable manual P 70 0.2527 104 0.07 73
IV.T1299.HNE. 2020-03-21T22:38:41.79 0.3 undecidable manual P 158 0.286 102 -0.01 74
IV.FDMO.HHN. 2020-03-21T22:38:41.36 0.6 undecidable manual S 346 0.1412 114 0.14 49
IV.MMO1.EHZ. 2020-03-21T22:38:40.92 0.3 undecidable manual S 90 0.1403 114 -0.26 72
IV.PF6.EHE. 2020-03-21T22:38:40.36 0.3 undecidable manual P 10 0.2419 104 -0.48 67
IV.MML1.EHZ. 2020-03-21T22:38:40.83 0.3 undecidable manual P 331 0.2446 104 -0.08 73
IV.GUMA.HHZ. 2020-03-21T22:38:40.40 0.3 undecidable manual P 42 0.2185 106 0.06 74
IV.MTRA.EHE. 2020-03-21T22:38:40.81 0.3 undecidable manual P 127 0.2392 104 0.04 74
IV.CESI.HHZ. 2020-03-21T22:38:40.23 0.3 undecidable manual P 302 0.1988 107 0.31 71
IV.CSP1.EHZ. 2020-03-21T22:38:39.90 0.1 undecidable manual P 15 0.1988 107 -0.01 100
IV.MMO1.EHZ. 2020-03-21T22:38:38.60 0.1 undecidable manual P 90 0.1403 114 -0.09 100
IT.MTCL.HGE. 2020-03-21T22:38:38.91 0.3 undecidable manual P 313 0.1367 114 0.28 72
IV.MC2.EHZ. 2020-03-21T22:38:38.18 0.3 undecidable manual S 73 0.0405 146 0.05 77
IV.NRCA.HHZ. 2020-03-21T22:38:38.63 0.3 undecidable manual S 193 0.0683 132 -0.19 74
IV.FDMO.HHN. 2020-03-21T22:38:38.75 0.3 undecidable manual P 346 0.1412 114 0.04 75
IV.NRCA.HHZ. 2020-03-21T22:38:37.46 0.1 undecidable manual P 193 0.0683 132 0.13 100
IV.MC2.EHZ. 2020-03-21T22:38:37.05 0.3 positive manual P 73 0.0405 146 0.12 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1 0.0001965 1.26 AML other m 2020-03-21T22:38:38.19
IV.NRCA.HHN. ML:1 0.000211 0.36 AML other m 2020-03-21T22:38:39.69
IV.NRCA.HNE. ML:0.9 0.00016077555 0.1024 AML other m 2020-03-21T22:38:39.20
IV.NRCA.HNN. ML:1 0.00021185955 0.128 AML other m 2020-03-21T22:38:39.46
IV.CSP1.EHE. ML:0.6 2.967703E-5 0.1408 AML other m 2020-03-21T22:38:44.03
IV.CSP1.EHN. ML:0.6 2.650486E-5 0.1664 AML other m 2020-03-21T22:38:43.81
IV.CESI.HHE. ML:0.2 9.153E-6 0.0896 AML other m 2020-03-21T22:38:44.04
IV.CESI.HHN. ML:0.4 1.7938407E-5 0.2048 AML other m 2020-03-21T22:38:44.11
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