Earthquake with magnitude of ML 0.7 on date 19-09-2021 and time 00:23:13 (Italy) in region 5 km S Campello sul Clitunno (PG)

A magnitude ML 0.7 earthquake occured in region: 5 km S Campello sul Clitunno (PG), on

  • 18-09-2021 22:23:13 (UTC)
  • 19-09-2021 00:23:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.779, 12.777 at 11 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
Campello sul Clitunno PG 5 2442 2442
Spoleto PG 6 38218 40660
Sant'Anatolia di Narco PG 7 564 41224
Vallo di Nera PG 7 364 41588
Scheggino PG 9 461 42049
Castel Ritaldi PG 10 3278 45327
Trevi PG 11 8469 53796
Cerreto di Spoleto PG 12 1075 54871
Poggiodomo PG 15 117 54988
Montefalco PG 16 5679 60667
Sellano PG 17 1079 61746
Giano dell'Umbria PG 17 3846 65592
Ferentillo TR 18 1913 67505

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km S of Foligno (57155 inhabitants)
26 Km NE of Terni (111501 inhabitants)
48 Km SE of Perugia (166134 inhabitants)
68 Km NE of Viterbo (67173 inhabitants)
70 Km NW of L'Aquila (69753 inhabitants)
77 Km W of Teramo (54892 inhabitants)
87 Km N of Guidonia Montecelio (88673 inhabitants)
91 Km N of Tivoli (56533 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 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 0.7 2021-09-18
22:23:13
42.7792 12.7773 11 2021-09-18
22:40:47
Sala Sismica INGV-Roma 95604181
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-18 22:23:13 ± 0.03
Latitude 42.7792 ± 0.0027
Longitude 12.7773 ± 0.0025
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95604181

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 260
Semi-minor axis of confidence ellipse (meter) 181
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 199
Circular confidence region, given by single value of horizontal uncertainty (meter) 260
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 160
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.05
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.34264
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 95604181
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-18 22:40:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TREG.EHZ. 2021-09-18T22:24:46.60 3.0 undecidable manual Sg 11.11 0
IV.ZEN8.EHZ. 2021-09-18T22:24:39.41 3.0 undecidable manual Sn -1.67 0
IV.CRJA.HHZ. 2021-09-18T22:24:29.02 3.0 negative manual Pn 1.51 0
IV.MUCR.HHZ. 2021-09-18T22:24:28.74 3.0 undecidable manual Pn 0.61 0
IV.SBPO.HNZ. 2021-09-18T22:24:26.98 3.0 undecidable manual Sn 0.07 0
IV.MTGR.HHZ. 2021-09-18T22:24:24.67 3.0 undecidable manual Pn -1.5 0
OX.VARN.HHZ. 2021-09-18T22:24:09.64 3.0 negative manual Pg 6.34 0
CR.STON.BHZ. 2021-09-18T22:24:08.08 3.0 positive manual Pn -1.87 0
IV.TREG.EHZ. 2021-09-18T22:24:04.10 3.0 undecidable manual Pg 4.76 0
IV.CERA.HHZ. 2021-09-18T22:24:02.45 3.0 undecidable manual Sg 0.55 0
IV.SGRT.HHZ. 2021-09-18T22:24:01.48 3.0 undecidable manual Pg 7.97 0
IV.LPEL.HHZ. 2021-09-18T22:23:57.06 3.0 undecidable manual S 0.32 0
IV.ZCCA.HHZ. 2021-09-18T22:23:46.16 3.0 undecidable manual Pn -0.08 0
IV.NARO.HHZ. 2021-09-18T22:23:40.52 3.0 undecidable manual S -1.56 0
IV.FDMO.HHZ. 2021-09-18T22:23:26.02 0.1 undecidable manual S 41 0.3426 50 0.05 96
IV.ASSB.HHZ. 2021-09-18T22:23:24.01 0.3 undecidable manual S 342 0.277 50 -0.02 73
IV.NRCA.HHZ. 2021-09-18T22:23:23.27 0.1 undecidable manual S 77 0.2527 50 -0.03 98
IV.FDMO.HHZ. 2021-09-18T22:23:20.58 0.1 undecidable manual P 41 0.3426 50 -0.04 96
IV.NRCA.HHZ. 2021-09-18T22:23:19.09 0.1 undecidable manual P 77 0.2527 50 0.02 98
IV.ASSB.HHZ. 2021-09-18T22:23:19.48 0.1 undecidable manual P 342 0.277 50 -0.02 98
IV.GAVE.EHZ. 2021-09-18T22:23:19.28 0.1 undecidable manual S 135 0.1223 129 -0.05 100
IV.ARRO.EHZ. 2021-09-18T22:23:18.19 0.6 undecidable manual P 182 0.1996 50 0.01 50
IV.GAVE.EHZ. 2021-09-18T22:23:16.88 0.3 undecidable manual P 135 0.1223 129 0.1 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHN. ML:1 9.405E-5 0.54 AML other m 2021-09-18T22:23:19.72
IV.GAVE.EHE. ML:1 9.76E-5 0.14 AML other m 2021-09-18T22:23:20.23
IV.NRCA.HHE. ML:0.6 2.14E-5 0.44 AML other m 2021-09-18T22:23:23.32
IV.NRCA.HHN. ML:0.6 1.885E-5 0.46 AML other m 2021-09-18T22:23:23.84
IV.ASSB.HHN. ML:0.5 1.49E-5 0.16 AML other m 2021-09-18T22:23:24.57
IV.ASSB.HHE. ML:0.5 1.485E-5 0.66 AML other m 2021-09-18T22:23:25.63
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