Earthquake with magnitude of ML 1.1 on date 01-04-2020 and time 04:38:17 (Italy) in region 1 km W Monteleone di Spoleto (PG)

A magnitude ML 1.1 earthquake occured in region: 1 km W Monteleone di Spoleto (PG), on

  • 01-04-2020 02:38:17 (UTC)
  • 01-04-2020 04:38:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.65, 12.95 at 12 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 1 599 599
Poggiodomo PG 7 117 716
Cascia PG 9 3217 3933
Leonessa RI 10 2435 6368
Polino TR 11 233 6601
Scheggino PG 12 461 7062
Sant'Anatolia di Narco PG 13 564 7626
Ferentillo TR 13 1913 9539
Vallo di Nera PG 15 364 9903
Montefranco TR 16 1276 11179
Arrone TR 16 2763 13942
Morro Reatino RI 17 373 14315
Rivodutri RI 17 1253 15568
Poggio Bustone RI 17 2055 17623
Cittareale RI 18 482 18105
Labro RI 18 374 18479
Posta RI 19 694 19173
Cerreto di Spoleto PG 19 1075 20248
Spoleto PG 19 38218 58466
Norcia PG 20 4957 63423

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km E of Terni (111501 inhabitants)
39 Km SE of Foligno (57155 inhabitants)
50 Km NW of L'Aquila (69753 inhabitants)
62 Km W of Teramo (54892 inhabitants)
68 Km SE of Perugia (166134 inhabitants)
74 Km E of Viterbo (67173 inhabitants)
74 Km N of Guidonia Montecelio (88673 inhabitants)
77 Km N of Tivoli (56533 inhabitants)
92 Km NE of Roma (2864731 inhabitants)
100 Km W of Montesilvano (53738 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 1.1 2020-04-01
02:38:17
42.65 12.95 12 2020-04-01
02:48:14
Sala Sismica INGV-Roma 77743941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-01 02:38:17 ± 0.14
Latitude 42.65 ± 0.01
Longitude 12.95 ± 0.01
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77743941

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 675
Semi-minor axis of confidence ellipse (meter) 306
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 330
Circular confidence region, given by single value of horizontal uncertainty (meter) 670
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 152
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 8
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
Epicentral distance of station farthest from the epicenter (degree) 0.24192
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 4
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 77743941
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-01 02:48:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.HAGA.HHZ. 2020-04-01T02:39:54.18 3.0 undecidable manual Pg 15.8 0
IV.MCRV.HHZ. 2020-04-01T02:39:35.63 3.0 undecidable manual Sn -0.18 0
IV.PTRJ.HHZ. 2020-04-01T02:39:26.43 3.0 undecidable manual Sg 9.01 0
IV.TRIV.HHZ. 2020-04-01T02:39:06.69 3.0 undecidable manual Sn -3.4 0
IV.SAMA.EHZ. 2020-04-01T02:38:54.26 3.0 undecidable manual Sg 0.07 0
IV.TRIV.HHZ. 2020-04-01T02:38:43.26 3.0 undecidable manual Pg 2.32 0
IV.MF5.EHZ. 2020-04-01T02:38:40.01 3.0 undecidable manual S 0
IV.MNTT.EHZ. 2020-04-01T02:38:40.49 3.0 undecidable manual S 0
IV.ROSPO.HHZ. 2020-04-01T02:38:38.15 3.0 negative manual Pn -1.47 0
IV.MF5.EHZ. 2020-04-01T02:38:36.38 3.0 undecidable manual P 0
IV.MNTT.EHZ. 2020-04-01T02:38:34.16 3.0 undecidable manual P 0
IV.SAMA.EHZ. 2020-04-01T02:38:29.22 3.0 undecidable manual Pn -2.79 0
IV.RM33.EHZ. 2020-04-01T02:38:27.13 0.1 undecidable manual S 126 0.2419 95 -0.11 96
IV.NRCA.HHZ. 2020-04-01T02:38:26.42 0.3 undecidable manual S 34 0.2203 96 -0.18 72
IV.ARRO.EHZ. 2020-04-01T02:38:24.42 0.1 undecidable manual S 242 0.1511 105 -0.15 98
IV.ATTE.HHZ. 2020-04-01T02:38:23.37 3.0 undecidable manual Sg 1.56 0
IV.RM33.EHZ. 2020-04-01T02:38:23.36 0.6 positive manual P 126 0.2419 95 0.2 48
IV.LNSS.HHZ. 2020-04-01T02:38:22.76 0.1 undecidable manual S 125 0.0836 131 -0.03 100
IV.NRCA.HHZ. 2020-04-01T02:38:22.89 0.3 undecidable manual P 34 0.2203 96 0.09 74
IV.ARRO.EHZ. 2020-04-01T02:38:21.78 1.0 positive manual P 242 0.1511 105 0.16 24
IV.CRMI.HHZ. 2020-04-01T02:38:21.39 3.0 undecidable manual Pn -0.03 0
IV.LNSS.HHZ. 2020-04-01T02:38:20.89 0.6 undecidable manual P 125 0.0836 131 0.3 49
IV.ATFO.HHZ. 2020-04-01T02:38:12.60 3.0 undecidable manual Pn -0.53 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRMI.HHN. ML:2.4 6.31E-5 0.28 AML other m 2020-04-01T02:38:21.44
IV.CRMI.HHE. ML:2.3 5.53E-5 0.68 AML other m 2020-04-01T02:38:21.88
IV.LNSS.HHN. ML:1.2 0.000191 0.4 AML other m 2020-04-01T02:38:23.07
IV.LNSS.HHE. ML:1.3 0.0002255 0.76 AML other m 2020-04-01T02:38:23.25
IV.NRCA.HHE. ML:1 6.69E-5 0.08 AML other m 2020-04-01T02:38:28.16
IV.NRCA.HHN. ML:1 5.69E-5 0.42 AML other m 2020-04-01T02:38:51.02
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