Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 14-09-2021 and time 05:27:35 (Italy) in region 11 km W Monte Cavallo (MC)

A magnitude ML 1.2 earthquake occured in region: 11 km W Monte Cavallo (MC), on

  • 14-09-2021 03:27:35 (UTC)
  • 14-09-2021 05:27:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9920, 12.8640 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
Monte Cavallo MC 11 145 145
Serravalle di Chienti MC 12 1070 1215
Valtopina PG 12 1398 2613
Sellano PG 13 1079 3692
Foligno PG 14 57155 60847
Nocera Umbra PG 15 5839 66686
Spello PG 16 8645 75331
Trevi PG 16 8469 83800
Pieve Torina MC 16 1458 85258
Muccia MC 18 915 86173
Sefro MC 19 422 86595
Preci PG 19 724 87319
Fiordimonte MC 19 202 87521
Visso MC 20 1107 88628
Cerreto di Spoleto PG 20 1075 89703
Pievebovigliana MC 20 866 90569

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km E of Foligno (57155 inhabitants)
41 Km E of Perugia (166134 inhabitants)
51 Km NE of Terni (111501 inhabitants)
78 Km W of Teramo (54892 inhabitants)
84 Km NW of L'Aquila (69753 inhabitants)
88 Km SW of Ancona (100861 inhabitants)
89 Km NE of Viterbo (67173 inhabitants)
95 Km SE of Arezzo (99543 inhabitants)
96 Km S of Fano (60888 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 1.2 2021-09-14
03:27:35		 42.9922 12.8637 10 2021-09-14
05:25:48		 Sala Sismica INGV-Roma 95407421
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-14 03:27:35 ± 0.08
Latitude 42.9922 ± 0.0054
Longitude 12.8637 ± 0.0061
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95407421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 647
Semi-minor axis of confidence ellipse (meter) 336
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 217
Circular confidence region, given by single value of horizontal uncertainty (meter) 650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 113
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.03238
Epicentral distance of station farthest from the epicenter (degree) 0.53959
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:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 95407421
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-14 05:25:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2021-09-14T03:27:53.39 0.6 undecidable manual S 6 56.499 50 0.36 43
IV.MF5.EHZ. 2021-09-14T03:27:51.78 0.6 undecidable manual S 90 48.3183 50 0.92 36
IV.MURB.HHZ. 2021-09-14T03:27:49.39 0.3 undecidable manual S 318 40.7259 50 0.57 63
IV.EL6.EHZ. 2021-09-14T03:27:49.24 0.6 undecidable manual S 27 42.0246 50 0.06 47
IV.MMO1.EHZ. 2021-09-14T03:27:48.01 0.6 undecidable manual S 105 39.0276 50 -0.35 45
IV.MNTT.EHZ. 2021-09-14T03:27:46.73 0.6 negative manual P 82 59.8956 50 0.74 38
IV.GAVE.EHZ. 2021-09-14T03:27:46.70 0.6 undecidable manual S 176 33.3444 50 -0.17 47
IV.CSP1.EHZ. 2021-09-14T03:27:45.73 0.6 undecidable manual S 68 29.748 50 -0.17 47
IV.ARVD.HHZ. 2021-09-14T03:27:45.30 0.6 positive manual P 6 56.499 50 -0.17 45
IV.MC2.EHZ. 2021-09-14T03:27:45.52 0.6 undecidable manual S 109 27.8499 109 0.16 48
IV.ATCC.EHZ. 2021-09-14T03:27:45.47 0.6 undecidable manual S 320 28.0497 109 0.06 49
IV.SNTG.HHZ. 2021-09-14T03:27:45.25 0.6 undecidable manual S 12 29.8479 50 -0.66 41
IV.MF5.EHZ. 2021-09-14T03:27:44.49 0.6 positive manual P 90 48.3183 50 0.27 45
IV.EL6.EHZ. 2021-09-14T03:27:43.16 0.6 positive manual P 27 42.0246 50 -0.09 47
IV.MMO1.EHZ. 2021-09-14T03:27:42.52 0.6 positive manual P 105 39.0276 50 -0.26 46
IV.ASSB.HHZ. 2021-09-14T03:27:42.04 0.6 undecidable manual S 289 17.5713 118 -0.02 50
IV.MURB.HHZ. 2021-09-14T03:27:42.98 0.6 negative manual P 318 40.7259 50 -0.06 48
IV.GAVE.EHZ. 2021-09-14T03:27:41.81 0.3 positive manual P 176 33.3444 50 -0.1 72
IV.SNTG.HHZ. 2021-09-14T03:27:41.01 0.1 negative manual P 12 29.8479 50 -0.35 91
IV.CSP1.EHZ. 2021-09-14T03:27:41.06 0.6 undecidable manual P 68 29.748 50 -0.3 46
IV.MC2.EHZ. 2021-09-14T03:27:41.13 1.0 negative manual P 109 27.8499 109 0.09 24
IV.ATCC.EHZ. 2021-09-14T03:27:40.94 0.3 positive manual P 320 28.0497 109 -0.13 72
IV.ASSB.HHZ. 2021-09-14T03:27:39.15 0.1 positive manual P 289 17.5713 118 0.01 100
IV.CESI.HHZ. 2021-09-14T03:27:38.54 0.6 undecidable manual S 67 3.5964 159 -0.12 50
IV.CESI.HHZ. 2021-09-14T03:27:37.30 0.1 undecidable manual P 67 3.5964 159 0.13 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:1.4 0.0004925 0.24 AML other m 2021-09-14T03:27:38.71
IV.CESI.HHE. ML:1.3 0.00040300000000000004 1.22 AML other m 2021-09-14T03:27:38.62
IV.ASSB.HHE. ML:1.1 0.00011710000000000001 0.22 AML other m 2021-09-14T03:27:42.13
IV.ASSB.HHN. ML:1.3 0.0001645 0.18 AML other m 2021-09-14T03:27:42.25
IV.ATCC.EHN. ML:1.1 0.00005795 0.36 AML other m 2021-09-14T03:27:45.69
IV.ATCC.EHE. ML:1.0 0.00005425 0.26 AML other m 2021-09-14T03:27:45.64
IV.SNTG.HHE. ML:1.0 0.00004935000000000001 0.08 AML other m 2021-09-14T03:27:46.67
IV.SNTG.HHN. ML:1.0 0.000047350000000000006 0.14 AML other m 2021-09-14T03:27:46.64
IV.GAVE.EHE. ML:1.4 0.00010315 0.96 AML other m 2021-09-14T03:27:47.60
IV.GAVE.EHN. ML:1.3 0.0000853 0.16 AML other m 2021-09-14T03:27:47.61
IV.MF5.EHE. ML:1.0 0.000030065 0.6 AML other m 2021-09-14T03:27:48.85
IV.EL6.EHE. ML:1.6 0.000125 0.64 AML other m 2021-09-14T03:27:49.67
IV.EL6.EHN. ML:1.6 0.0001148 1.5 AML other m 2021-09-14T03:27:49.03
IV.MURB.HHE. ML:1.0 0.000035000000000000004 0.88 AML other m 2021-09-14T03:27:50.14
IV.MURB.HHN. ML:1.2 0.00004869999999999999 0.26 AML other m 2021-09-14T03:27:51.95
IV.MF5.EHN. ML:1.1 0.0000363 0.42 AML other m 2021-09-14T03:28:05.60
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