Earthquake with magnitude of ML 1.5 on date 25-10-2021 and time 18:46:34 (Italy) in region 9 km W Monte Cavallo (MC)

A magnitude ML 1.5 earthquake occured in region: 9 km W Monte Cavallo (MC), on

  • 25-10-2021 16:46:34 (UTC)
  • 25-10-2021 18:46:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.002, 12.894 at 14 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
Monte Cavallo MC 9 145 145
Serravalle di Chienti MC 9 1070 1215
Sellano PG 13 1079 2294
Valtopina PG 13 1398 3692
Pieve Torina MC 14 1458 5150
Nocera Umbra PG 15 5839 10989
Muccia MC 15 915 11904
Foligno PG 16 57155 69059
Fiordimonte MC 17 202 69261
Sefro MC 17 422 69683
Pievebovigliana MC 17 866 70549
Visso MC 18 1107 71656
Spello PG 18 8645 80301
Preci PG 18 724 81025
Trevi PG 18 8469 89494

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km E of Foligno (57155 inhabitants)
43 Km E of Perugia (166134 inhabitants)
53 Km NE of Terni (111501 inhabitants)
76 Km NW of Teramo (54892 inhabitants)
83 Km NW of L'Aquila (69753 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
91 Km NE of Viterbo (67173 inhabitants)
94 Km S of Fano (60888 inhabitants)
97 Km SE of Arezzo (99543 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 1.5 2021-10-25
16:46:34
43.0022 12.8937 14 2021-10-25
17:01:53
Sala Sismica INGV-Roma 96985141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-25 16:46:34 ± 0.05
Latitude 43.0022 ± 0.0018
Longitude 12.8937 ± 0.0037
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96985141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 287
Semi-minor axis of confidence ellipse (meter) 140
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 65
Circular confidence region, given by single value of horizontal uncertainty (meter) 290
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 150
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.59355
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 16
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 96985141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-25 17:01:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RCAV.EHZ. 2021-10-25T16:46:56.84 3.0 undecidable manual P 0.56 0
IV.LNSS.HHE. 2021-10-25T16:46:49.59 0.3 undecidable manual S 165 0.4137 95 0.34 66
IV.EL6.EHZ. 2021-10-25T16:46:47.92 0.3 undecidable manual S 25 0.3606 96 0.23 68
IV.PIEI.HHZ. 2021-10-25T16:46:46.04 0.1 undecidable manual P 334 0.5936 93 -0.06 90
IV.MMO1.EHZ. 2021-10-25T16:46:46.91 0.3 undecidable manual S 108 0.3327 97 0.02 71
IV.ATCC.EHZ. 2021-10-25T16:46:45.01 0.3 undecidable manual S 315 0.2599 100 0.26 68
IV.SNTG.HHZ. 2021-10-25T16:46:44.44 0.3 undecidable manual S 8 0.2554 101 -0.16 71
IV.CSP1.EHZ. 2021-10-25T16:46:44.49 0.3 undecidable manual S 68 0.2446 102 0.2 70
IV.PF6.EHZ. 2021-10-25T16:46:44.61 0.3 undecidable manual S 58 0.2581 101 -0.08 71
IV.NRCA.HHZ. 2021-10-25T16:46:43.93 0.3 undecidable manual S 136 0.2338 102 -0.05 72
IV.LNSS.HHE. 2021-10-25T16:46:42.82 0.1 undecidable manual P 165 0.4137 95 -0.2 90
IV.EL6.EHZ. 2021-10-25T16:46:42.00 0.1 undecidable manual P 25 0.3606 96 -0.12 93
IV.MMO1.EHZ. 2021-10-25T16:46:41.53 0.1 undecidable manual P 108 0.3327 97 -0.13 92
IV.FEMA.HNZ. 2021-10-25T16:46:41.14 0.3 undecidable manual S 109 0.1214 124 0.25 71
IV.FDMO.HHZ. 2021-10-25T16:46:41.47 0.3 undecidable manual S 76 0.1457 117 -0.05 73
IV.MC2.EHZ. 2021-10-25T16:46:40.04 0.1 undecidable manual P 113 0.2347 102 0.05 97
IV.MML1.EHZ. 2021-10-25T16:46:40.94 0.3 undecidable manual S 27 0.125 123 -0.05 74
IV.SNTG.HHZ. 2021-10-25T16:46:40.08 0.1 undecidable manual P 8 0.2554 101 -0.26 92
IV.ATCC.EHZ. 2021-10-25T16:46:40.42 0.1 undecidable manual P 315 0.2599 100 0 96
IV.CSP1.EHZ. 2021-10-25T16:46:40.18 0.1 undecidable manual P 68 0.2446 102 0.02 97
IV.PF6.EHZ. 2021-10-25T16:46:40.74 0.3 undecidable manual P 58 0.2581 101 0.35 68
IV.CESI.HHZ. 2021-10-25T16:46:39.07 0.3 undecidable manual S 71 0.0081 175 -0.09 75
IV.NRCA.HHZ. 2021-10-25T16:46:39.82 0.1 undecidable manual P 136 0.2338 102 -0.16 94
IT.MTCL.HGZ. 2021-10-25T16:46:39.77 0.6 undecidable manual S 96 0.0773 141 -0.17 48
IV.FEMA.HNZ. 2021-10-25T16:46:38.30 0.1 undecidable manual P 109 0.1214 124 0.11 97
IV.FDMO.HHZ. 2021-10-25T16:46:38.52 0.1 undecidable manual P 76 0.1457 117 -0.04 98
IV.SEF1.HNZ. 2021-10-25T16:46:38.57 0.3 undecidable manual P 15 0.1502 116 -0.05 74
IV.MML1.EHZ. 2021-10-25T16:46:38.25 0.1 undecidable manual P 27 0.125 123 0 99
IV.CESI.HHZ. 2021-10-25T16:46:37.23 0.1 undecidable manual P 71 0.0081 175 0.04 100
IT.MTCL.HGZ. 2021-10-25T16:46:37.67 0.1 undecidable manual P 96 0.0773 141 0.02 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:1.3 0.0002815 0.18 AML other m 2021-10-25T16:46:39.21
IV.CESI.HHE. ML:1.2 0.000223 0.42 AML other m 2021-10-25T16:46:39.10
IV.MML1.HNE. ML:1.7 0.0004495 0.14 AML other m 2021-10-25T16:46:41.03
IV.MML1.HNN. ML:1.6 0.0003205 0.12 AML other m 2021-10-25T16:46:41.09
IV.MML1.EHN. ML:1.6 0.0003245 0.12 AML other m 2021-10-25T16:46:41.03
IV.MML1.EHE. ML:1.7 0.000472 0.3 AML other m 2021-10-25T16:46:41.10
IV.FDMO.HHE. ML:1.2 0.00013665 0.16 AML other m 2021-10-25T16:46:41.57
IV.FDMO.HHN. ML:1 8.44E-5 0.18 AML other m 2021-10-25T16:46:41.79
IV.NRCA.HHN. ML:1.8 0.0003065 0.14 AML other m 2021-10-25T16:46:44.13
IV.NRCA.HHE. ML:1.6 0.0002185 0.52 AML other m 2021-10-25T16:46:44.32
IV.ATCC.EHN. ML:1.5 0.0001595 0.62 AML other m 2021-10-25T16:46:45.61
IV.ATCC.EHE. ML:1.5 0.000157 0.14 AML other m 2021-10-25T16:46:45.42
IV.SNTG.HHN. ML:1.1 5.875E-5 0.56 AML other m 2021-10-25T16:46:45.51
IV.SNTG.HHE. ML:1 5.22E-5 0.28 AML other m 2021-10-25T16:46:45.51
IV.EL6.EHE. ML:1.7 0.0001637833 0.1536 AML other m 2021-10-25T16:46:48.51
IV.EL6.EHN. ML:1.4 8.7312805E-5 0.1792 AML other m 2021-10-25T16:46:48.74
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