Earthquake with magnitude of ML 1.4 on date 31-03-2020 and time 14:53:44 (Italy) in region 4 km NW Monteleone di Spoleto (PG)

A magnitude ML 1.4 earthquake occured in region: 4 km NW Monteleone di Spoleto (PG), on

  • 31-03-2020 12:53:44 (UTC)
  • 31-03-2020 14:53:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.68, 12.92 at 10 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
Monteleone di Spoleto PG 4 599 599
Poggiodomo PG 4 117 716
Scheggino PG 8 461 1177
Sant'Anatolia di Narco PG 9 564 1741
Cascia PG 9 3217 4958
Vallo di Nera PG 11 364 5322
Polino TR 12 233 5555
Ferentillo TR 12 1913 7468
Leonessa RI 13 2435 9903
Montefranco TR 15 1276 11179
Arrone TR 16 2763 13942
Spoleto PG 16 38218 52160
Cerreto di Spoleto PG 16 1075 53235
Morro Reatino RI 18 373 53608
Rivodutri RI 18 1253 54861
Labro RI 19 374 55235
Poggio Bustone RI 19 2055 57290
Norcia PG 19 4957 62247
Campello sul Clitunno PG 20 2442 64689

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NE of Terni (111501 inhabitants)
36 Km SE of Foligno (57155 inhabitants)
54 Km NW of L'Aquila (69753 inhabitants)
64 Km SE of Perugia (166134 inhabitants)
65 Km W of Teramo (54892 inhabitants)
72 Km E of Viterbo (67173 inhabitants)
77 Km N of Guidonia Montecelio (88673 inhabitants)
80 Km N of Tivoli (56533 inhabitants)
94 Km NE of Roma (2864731 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 1.4 2020-03-31
12:53:44
42.68 12.92 10 2020-03-31
13:11:56
Sala Sismica INGV-Roma 77729461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-31 12:53:44 ± 0.05
Latitude 42.68 ± 0.00
Longitude 12.92 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77729461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 303
Semi-minor axis of confidence ellipse (meter) 243
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 166
Circular confidence region, given by single value of horizontal uncertainty (meter) 300
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.11691
Epicentral distance of station farthest from the epicenter (degree) 0.50812
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:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 77729461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-31 13:11:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CESI.HHZ. 2020-03-31T12:53:57.10 0.6 undecidable manual S 358 0.3283 50 0.18 47
IV.MC2.EHZ. 2020-03-31T12:53:56.46 0.1 undecidable manual S 40 0.3085 50 0.14 96
IV.SMA1.EHZ. 2020-03-31T12:53:56.59 0.1 undecidable manual S 98 0.3112 50 0.19 95
IV.MOMA.HHZ. 2020-03-31T12:53:55.75 0.3 undecidable manual S 297 0.2851 50 0.12 72
IV.RM33.EHZ. 2020-03-31T12:53:55.10 0.3 undecidable manual S 127 0.2752 50 -0.25 70
IV.TERO.HHZ. 2020-03-31T12:53:54.44 0.3 undecidable manual P 96 0.5081 50 -0.31 67
IV.CESX.HHN. 2020-03-31T12:53:54.34 0.3 undecidable manual S 254 0.2518 50 -0.32 70
IV.CSP1.EHZ. 2020-03-31T12:53:54.22 0.1 undecidable manual P 27 0.4658 50 0.19 92
IV.NRCA.HHZ. 2020-03-31T12:53:53.10 0.1 undecidable manual S 43 0.2131 113 -0.37 93
IV.MMO1.EHZ. 2020-03-31T12:53:52.56 0.1 undecidable manual P 53 0.3741 50 0.09 95
IV.FDMO.HHZ. 2020-03-31T12:53:52.50 0.1 undecidable manual P 19 0.3804 50 -0.08 95
IV.CESI.HHZ. 2020-03-31T12:53:51.70 0.1 undecidable manual P 358 0.3283 50 0.02 98
IV.ARRO.EHZ. 2020-03-31T12:53:51.14 0.1 undecidable manual S 229 0.1475 122 -0.07 100
IV.SMA1.EHZ. 2020-03-31T12:53:51.45 0.1 undecidable manual P 98 0.3112 50 0.07 97
IV.MC2.EHZ. 2020-03-31T12:53:51.34 0.3 undecidable manual P 40 0.3085 50 0 74
IV.RM33.EHZ. 2020-03-31T12:53:50.56 0.1 undecidable manual P 127 0.2752 50 -0.22 95
IV.MOMA.HHZ. 2020-03-31T12:53:50.94 0.3 undecidable manual P 297 0.2851 50 0.01 74
IV.CESX.HHN. 2020-03-31T12:53:50.45 0.6 undecidable manual P 254 0.2518 50 0.07 49
IV.LNSS.HHZ. 2020-03-31T12:53:50.37 0.1 undecidable manual S 129 0.1169 128 0.14 99
IV.NRCA.HHZ. 2020-03-31T12:53:49.59 0.1 undecidable manual P 43 0.2131 113 -0.1 98
IV.LNSS.HHZ. 2020-03-31T12:53:48.03 0.1 undecidable manual P 129 0.1169 128 0.21 98
IV.ARRO.EHZ. 2020-03-31T12:53:48.56 0.1 undecidable manual P 229 0.1475 122 0.17 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.5 0.000338 0.6 AML other m 2020-03-31T12:53:50.48
IV.LNSS.HHN. ML:1.5 0.000312 0.2 AML other m 2020-03-31T12:53:50.65
IV.ARRO.EHN. ML:1.3 0.0001935 0.14 AML other m 2020-03-31T12:53:51.37
IV.ARRO.EHE. ML:1.3 0.0001795 0.22 AML other m 2020-03-31T12:53:51.55
IV.NRCA.HHE. ML:1.8 0.0003905 0.68 AML other m 2020-03-31T12:53:53.39
IV.NRCA.HHN. ML:1.6 0.000262 0.16 AML other m 2020-03-31T12:53:53.52
IV.MOMA.HHN. ML:1.2 8.105E-5 1.12 AML other m 2020-03-31T12:53:56.63
IV.MOMA.HHE. ML:1.3 9.165E-5 0.58 AML other m 2020-03-31T12:53:56.41
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