Earthquake with magnitude of ML 1.3 on date 13-01-2021 and time 13:02:40 (UTC) in region 4 km N Spoleto (PG)

A magnitude ML 1.3 earthquake occured in region: 4 km N Spoleto (PG), on

  • 13-01-2021 13:02:40 (UTC)
  • 13-01-2021 14:02:40 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.773, 12.739 at 9 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
Spoleto PG 4 38218 38218
Campello sul Clitunno PG 6 2442 40660
Castel Ritaldi PG 8 3278 43938
Sant'Anatolia di Narco PG 9 564 44502
Scheggino PG 10 461 44963
Vallo di Nera PG 10 364 45327
Trevi PG 12 8469 53796
Giano dell'Umbria PG 15 3846 57642
Montefalco PG 15 5679 63321
Cerreto di Spoleto PG 16 1075 64396
Ferentillo TR 17 1913 66309
Poggiodomo PG 17 117 66426
Massa Martana PG 18 3770 70196
Acquasparta TR 18 4778 74974
Montefranco TR 20 1276 76250

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km S of Foligno (57155 inhabitants)
25 Km NE of Terni (111501 inhabitants)
47 Km SE of Perugia (166134 inhabitants)
65 Km NE of Viterbo (67173 inhabitants)
72 Km NW of L'Aquila (69753 inhabitants)
80 Km W of Teramo (54892 inhabitants)
86 Km N of Guidonia Montecelio (88673 inhabitants)
90 Km N of Tivoli (56533 inhabitants)
100 Km N of Roma (2864731 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.3 2021-01-13
13:02:40
42.7733 12.7388 9 2021-01-13
13:12:10
Sala Sismica INGV-Roma 86225221
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-13 13:02:40 ± 0.06
Latitude 42.7733 ± 0.0036
Longitude 12.7388 ± 0.0061
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86225221

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 514
Semi-minor axis of confidence ellipse (meter) 430
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 279
Circular confidence region, given by single value of horizontal uncertainty (meter) 510
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 70
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.69068
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.1
Num. used stations 10
Type of magnitude ML
Reference to an origin 86225221
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-13 13:12:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SARZ.HHZ. 2021-01-13T13:04:26.69 3.0 undecidable manual Sg 10.11 0
AC.VLO.HHZ. 2021-01-13T13:04:21.15 3.0 undecidable manual Pg 18.18 0
IV.MAGA.HHZ. 2021-01-13T13:04:20.13 3.0 undecidable manual Sg 6.33 0
IV.ZONE.HHZ. 2021-01-13T13:04:18.80 3.0 undecidable manual Sn 0.79 0
OT.TAR1.HHZ. 2021-01-13T13:03:56.41 3.0 undecidable manual Pg 13.85 0
IV.VENL.HNZ. 2021-01-13T13:03:54.54 3.0 undecidable manual Sn -1.91 0
ST.CARE.EHZ. 2021-01-13T13:03:53.90 3.0 negative manual Pg 13.22 0
CR.ZAG.BHZ. 2021-01-13T13:03:49.04 3.0 undecidable manual Pg 9.75 0
CH.FUORN.HHZ. 2021-01-13T13:03:44.35 3.0 undecidable manual Pn -0.45 0
IV.MAGA.HHZ. 2021-01-13T13:03:37.55 3.0 undecidable manual Pg 4.68 0
IV.ZONE.HHZ. 2021-01-13T13:03:35.41 3.0 undecidable manual Pn 0.18 0
IV.RIBO.EHZ.01 2021-01-13T13:03:18.03 3.0 undecidable manual S -4.51 0
IV.IMOL.HNZ. 2021-01-13T13:03:10.71 3.0 negative manual Pn 0.06 0
IT.FIE.HGZ. 2021-01-13T13:03:08.33 3.0 undecidable manual P 1.29 0
IV.SMA1.EHZ. 2021-01-13T13:02:57.29 0.6 undecidable manual S 108 0.4605 50 0.45 43
IV.FDMO.HHZ. 2021-01-13T13:02:54.29 0.3 undecidable manual S 44 0.366 50 0.25 69
IV.MNTT.EHZ. 2021-01-13T13:02:53.49 0.1 undecidable manual P 65 0.6907 50 -0.31 84
IV.LNSS.HHZ. 2021-01-13T13:02:51.19 0.3 undecidable manual S 127 0.2797 50 -0.27 69
IV.ASSB.HHE. 2021-01-13T13:02:51.27 0.6 undecidable manual S 348 0.2752 50 -0.07 47
IV.NRCA.HHZ. 2021-01-13T13:02:51.45 0.3 undecidable manual S 78 0.2815 50 -0.08 72
IV.CESI.HHZ. 2021-01-13T13:02:50.79 0.3 undecidable manual S 28 0.2617 108 -0.13 72
IV.SMA1.EHZ. 2021-01-13T13:02:50.05 0.1 undecidable manual P 108 0.4605 50 0.18 90
IV.FDMO.HHZ. 2021-01-13T13:02:48.43 0.1 undecidable manual P 44 0.366 50 0.18 93
IV.NRCA.HHZ. 2021-01-13T13:02:46.66 0.1 undecidable manual P 78 0.2815 50 -0.15 95
IV.MOMA.HHZ. 2021-01-13T13:02:46.11 0.3 undecidable manual S 284 0.1277 124 -0.12 73
IV.CESI.HHZ. 2021-01-13T13:02:46.48 0.1 undecidable manual P 28 0.2617 108 0.03 96
IT.GNU.HGN. 2021-01-13T13:02:46.31 0.3 undecidable manual S 284 0.1277 124 0.08 74
IV.LNSS.HHZ. 2021-01-13T13:02:46.62 0.1 undecidable manual P 127 0.2797 50 -0.15 95
IV.ASSB.HHE. 2021-01-13T13:02:46.99 1.0 undecidable manual P 348 0.2752 50 0.29 23
IV.ARRO.EHE. 2021-01-13T13:02:45.69 0.6 undecidable manual P 174 0.1952 113 0.62 42
IV.CESX.HHZ. 2021-01-13T13:02:44.95 0.3 undecidable manual P 214 0.1988 113 -0.21 71
IT.GNU.HGN. 2021-01-13T13:02:43.80 0.1 undecidable manual P 284 0.1277 124 0.06 99
IV.MOMA.HHZ. 2021-01-13T13:02:43.74 0.1 undecidable manual P 284 0.1277 124 -0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHE. ML:1.5 0.000296 1.8 AML other m 2021-01-13T13:02:46.04
IV.MOMA.HHN. ML:1.2 0.0001745 0.28 AML other m 2021-01-13T13:02:47.73
IV.CESX.HHN. ML:1.4 0.0001665 0.46 AML other m 2021-01-13T13:02:49.77
IV.CESX.HHE. ML:1.3 0.0001325 0.32 AML other m 2021-01-13T13:02:52.60
IV.CESI.HHN. ML:1.2 8.49E-5 0.82 AML other m 2021-01-13T13:02:52.46
IV.NRCA.HHE. ML:1.2 7.875E-5 0.16 AML other m 2021-01-13T13:02:52.86
IV.NRCA.HHN. ML:1.2 7.355E-5 0.8 AML other m 2021-01-13T13:02:53.40
IV.LNSS.HHE. ML:1.3 0.0001011 0.64 AML other m 2021-01-13T13:02:53.93
IV.LNSS.HHN. ML:1.4 0.0001255 0.82 AML other m 2021-01-13T13:02:53.75
IV.CESI.HHE. ML:1 4.545E-5 0.88 AML other m 2021-01-13T13:02:54.46
IV.IMOL.HNN. ML:3.9 0.002535 1.52 AML other m 2021-01-13T13:03:22.96
IV.IMOL.HNE. ML:4.2 0.004615 0.04 AML other m 2021-01-13T13:03:55.43
IV.ZONE.HHN. ML:2.9 5.225E-5 0.62 AML other m 2021-01-13T13:04:30.34
IV.ZONE.HHE. ML:2.8 3.99E-5 0.42 AML other m 2021-01-13T13:04:31.27
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download