Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 15-01-2021 and time 07:58:37 (Italy) in region 5 km NE Foligno (PG)

A magnitude ML 1.5 earthquake occured in region: 5 km NE Foligno (PG), on

  • 15-01-2021 06:58:37 (UTC)
  • 15-01-2021 07:58:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.99, 12.74 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Foligno PG 5 57155 57155
Spello PG 6 8645 65800
Valtopina PG 8 1398 67198
Trevi PG 12 8469 75667
Bevagna PG 12 5081 80748
Montefalco PG 13 5679 86427
Cannara PG 13 4305 90732
Assisi PG 14 28299 119031
Nocera Umbra PG 14 5839 124870
Gualdo Cattaneo PG 18 6155 131025
Bastia Umbra PG 18 21874 152899
Sellano PG 19 1079 153978
Campello sul Clitunno PG 19 2442 156420
Castel Ritaldi PG 19 3278 159698
Serravalle di Chienti MC 19 1070 160768

Municipalities with at least 50000 inhabitants

An earthquake occurred to
5 Km NE of Foligno (57155 inhabitants)
32 Km E of Perugia (166134 inhabitants)
48 Km N of Terni (111501 inhabitants)
82 Km NE of Viterbo (67173 inhabitants)
86 Km W of Teramo (54892 inhabitants)
88 Km SE of Arezzo (99543 inhabitants)
89 Km NW of L'Aquila (69753 inhabitants)
94 Km SW of Ancona (100861 inhabitants)
98 Km S of Fano (60888 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
Reviewed
Rev100 		ML 1.5 2021-01-15
06:58:37		 42.99 12.74 10 2021-01-15
07:09:06		 Sala Sismica INGV-Roma 86260551
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-15 06:58:37 ± 0.05
Latitude 42.99 ± 0.00
Longitude 12.74 ± 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 86260551

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 423
Semi-minor axis of confidence ellipse (meter) 312
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 328
Circular confidence region, given by single value of horizontal uncertainty (meter) 420
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 64
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.46855
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 15
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 86260551
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-15 07:09:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FIR.HHZ. 2021-01-15T06:59:20.63 3.0 undecidable manual S 0.41 0
IV.EL6.EHZ. 2021-01-15T06:58:53.46 0.3 undecidable manual S 37 0.429 50 0.67 59
IV.CSP1.EHZ. 2021-01-15T06:58:50.76 0.3 undecidable manual S 73 0.3516 50 0.27 68
IV.NRCA.HHZ. 2021-01-15T06:58:49.21 0.3 undecidable manual S 120 0.3112 50 -0.09 71
IV.PIEI.HHZ. 2021-01-15T06:58:48.72 3.0 positive manual P -0.13 0
IV.MGAB.HHZ. 2021-01-15T06:58:47.00 0.1 undecidable manual P 261 0.4685 50 0.03 93
IV.FDMO.HHZ. 2021-01-15T06:58:47.32 0.3 undecidable manual S 79 0.2545 50 -0.31 69
IV.EL6.EHZ. 2021-01-15T06:58:46.22 0.1 undecidable manual P 37 0.429 50 -0.07 93
IV.LNSS.HHE. 2021-01-15T06:58:46.49 0.1 undecidable manual P 151 0.4416 50 -0.01 94
IV.SSFR.HHZ. 2021-01-15T06:58:46.45 3.0 undecidable manual P -0.2 0
IV.MOMA.HHZ. 2021-01-15T06:58:46.79 0.3 undecidable manual S 215 0.2239 50 0.07 72
IV.PF6.EHZ. 2021-01-15T06:58:45.01 0.1 undecidable manual P 65 0.3606 50 -0.11 93
IV.NRCA.HHZ. 2021-01-15T06:58:44.18 0.1 undecidable manual P 120 0.3112 50 -0.09 94
IV.MURB.HHZ. 2021-01-15T06:58:44.40 0.1 undecidable manual P 330 0.3184 50 0 96
IV.CSP1.EHZ. 2021-01-15T06:58:44.91 0.1 undecidable manual P 73 0.3516 50 -0.05 94
IV.FDMO.HHZ. 2021-01-15T06:58:43.17 0.1 undecidable manual P 79 0.2545 50 -0.14 95
IV.FOSV.EHZ. 2021-01-15T06:58:43.98 0.1 undecidable manual P 2 0.3067 50 -0.22 92
IT.GNU.HGZ. 2021-01-15T06:58:43.01 0.1 undecidable manual P 215 0.2239 50 0.23 93
IV.MOMA.HHZ. 2021-01-15T06:58:42.64 0.1 undecidable manual P 215 0.2239 50 -0.14 95
IT.MTCL.HGZ. 2021-01-15T06:58:42.06 0.1 undecidable manual P 88 0.1862 116 0.04 98
IT.FOPC.HGZ. 2021-01-15T06:58:41.22 0.3 undecidable manual S 239 0.036 159 0.04 76
IV.ASSB.HHZ. 2021-01-15T06:58:41.91 0.3 undecidable manual S 311 0.0836 138 -0.26 71
IV.ASSB.HHZ. 2021-01-15T06:58:40.19 0.1 undecidable manual P 311 0.0836 138 0.03 100
IV.CESI.HHZ. 2021-01-15T06:58:40.83 0.1 undecidable manual P 82 0.1178 128 0.1 98
IT.FOPC.HGZ. 2021-01-15T06:58:39.76 0.1 undecidable manual P 239 0.036 159 0.17 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHE. ML:1.9 0.0011045 1.7 AML other m 2021-01-15T06:58:41.08
IV.ASSB.HHN. ML:1.9 0.00109 1.7 AML other m 2021-01-15T06:58:42.08
IV.CESI.HHN. ML:1.2 0.0001645 0.68 AML other m 2021-01-15T06:58:43.14
IV.CESI.HHE. ML:1.2 0.000171 0.46 AML other m 2021-01-15T06:58:43.72
IV.MOMA.HHN. ML:1.4 0.000138 0.26 AML other m 2021-01-15T06:58:46.99
IV.MOMA.HHE. ML:1.4 0.0001335 0.88 AML other m 2021-01-15T06:58:47.63
IV.NRCA.HHE. ML:1.4 0.00010975 0.58 AML other m 2021-01-15T06:58:50.63
IV.MURB.HHN. ML:1.7 0.0001875 0.18 AML other m 2021-01-15T06:58:51.35
IV.MURB.HHE. ML:1.6 0.000179 1.06 AML other m 2021-01-15T06:58:51.92
IV.NRCA.HHN. ML:1.4 0.00011515 0.62 AML other m 2021-01-15T06:58:52.33
IV.SSFR.HHE. ML:1.5 7.595E-5 1.02 AML other m 2021-01-15T06:58:54.28
IV.SSFR.HHN. ML:1.5 8.07E-5 0.54 AML other m 2021-01-15T06:58:55.97
IV.FIR.HNE. ML:3.4 0.001185 0.08 AML other m 2021-01-15T06:59:40.08
IV.FIR.HHE. ML:3.4 0.00132 0.08 AML other m 2021-01-15T06:59:40.08
IV.FIR.HHN. ML:3 0.0004855 1.12 AML other m 2021-01-15T06:59:40.20
IV.FIR.HNN. ML:3 0.000539 1.1 AML other m 2021-01-15T06:59:40.21
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