Earthquake with magnitude of ML 1.0 on date 25-09-2021 and time 14:18:32 (Italy) in region 2 km SW Monte Cavallo (MC)

A magnitude ML 1.0 earthquake occured in region: 2 km SW Monte Cavallo (MC), on

  • 25-09-2021 12:18:32 (UTC)
  • 25-09-2021 14:18:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.985, 12.983 at 12 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 2 145 145
Pieve Torina MC 9 1458 1603
Serravalle di Chienti MC 10 1070 2673
Fiordimonte MC 11 202 2875
Visso MC 11 1107 3982
Sellano PG 12 1079 5061
Pievebovigliana MC 12 866 5927
Muccia MC 12 915 6842
Preci PG 13 724 7566
Ussita MC 14 444 8010
Fiastra MC 15 559 8569
Acquacanina MC 17 121 8690
Castelsantangelo sul Nera MC 17 281 8971
Camerino MC 18 6974 15945
Sefro MC 18 422 16367
Cerreto di Spoleto PG 19 1075 17442

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km E of Foligno (57155 inhabitants)
50 Km E of Perugia (166134 inhabitants)
55 Km NE of Terni (111501 inhabitants)
69 Km NW of Teramo (54892 inhabitants)
78 Km NW of L'Aquila (69753 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
95 Km NE of Viterbo (67173 inhabitants)
96 Km S of Fano (60888 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 1.0 2021-09-25
12:18:32
42.9852 12.9828 12 2021-09-25
12:25:11
Sala Sismica INGV-Roma 95867541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-25 12:18:32 ± 0.05
Latitude 42.9852 ± 0.0027
Longitude 12.9828 ± 0.0025
Depth (km) 12 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95867541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 266
Semi-minor axis of confidence ellipse (meter) 80
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 21
Circular confidence region, given by single value of horizontal uncertainty (meter) 270
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 136
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.32016
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 95867541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-25 12:25:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EFIU.HHZ. 2021-09-25T12:20:11.63 3.0 negative manual Pg 20.469999 0
GU.MGRO.HHZ. 2021-09-25T12:20:09.00 3.0 undecidable manual Sn 0.02 0
ST.CARE.EHZ. 2021-09-25T12:20:07.62 3.0 undecidable manual Sn 1.06 0
IV.SALO.HHZ. 2021-09-25T12:20:05.27 3.0 undecidable manual Sg 14.53 0
IV.ZEN8.EHZ. 2021-09-25T12:20:01.58 3.0 undecidable manual Sg 12.34 0
IV.MFNL.HHZ. 2021-09-25T12:19:59.61 3.0 negative manual Pg 12.75 0
IV.MAGA.HHZ. 2021-09-25T12:19:56.61 3.0 undecidable manual Sn 3.58 0
IV.FREG.EHZ. 2021-09-25T12:19:51.05 3.0 undecidable manual Sn 1.92 0
CH.DIX.HHZ. 2021-09-25T12:19:45.11 3.0 positive manual Pn 4.3 0
IV.PLLN.EHZ. 2021-09-25T12:19:41.98 3.0 positive manual Pn -3.52 0
GU.PZZ.HHZ. 2021-09-25T12:19:40.13 3.0 undecidable manual Pn 6.47 0
ST.CARE.EHZ. 2021-09-25T12:19:23.59 3.0 undecidable manual Pn -0.46 0
IV.DGI.HHZ. 2021-09-25T12:19:21.59 3.0 positive manual Pn -2.72 0
IX.RSF3.HHZ.02 2021-09-25T12:19:21.65 3.0 undecidable manual Pg 9.47 0
IV.FREG.EHZ. 2021-09-25T12:19:13.80 3.0 negative manual Pn -0.46 0
IT.SULP.HGZ. 2021-09-25T12:19:09.83 3.0 undecidable manual Sn 0.07 0
IV.SACR.HHZ. 2021-09-25T12:19:04.63 3.0 negative manual Pn 0.13 0
IV.RMP.HHZ. 2021-09-25T12:18:51.46 3.0 positive manual P -0.29 0
IV.ARVD.HHZ. 2021-09-25T12:18:50.78 3.0 undecidable manual S 4.84 0
IV.SNTG.HHZ. 2021-09-25T12:18:43.42 0.6 undecidable manual S 353 0.2716 93 0.24 46
IV.ASSB.HHZ. 2021-09-25T12:18:42.27 0.6 undecidable manual S 284 0.2437 94 -0.09 47
IV.NRCA.HHZ. 2021-09-25T12:18:40.40 0.6 undecidable manual S 148 0.179 98 -0.06 48
IV.CSP1.EHZ. 2021-09-25T12:18:40.94 0.6 undecidable manual S 57 0.1943 97 0.05 48
IV.ATCC.EHZ. 2021-09-25T12:18:39.58 0.1 undecidable manual P 309 0.3202 93 0.01 95
IV.MML1.EHZ. 2021-09-25T12:18:38.80 0.6 undecidable manual S 356 0.1286 110 -0.2 48
IV.ASSB.HHZ. 2021-09-25T12:18:38.19 0.1 undecidable manual P 284 0.2437 94 -0.07 95
IV.SNTG.HHZ. 2021-09-25T12:18:38.70 0.1 undecidable manual P 353 0.2716 93 -0.04 96
IV.FEMA.HNZ. 2021-09-25T12:18:37.38 0.6 undecidable manual S 115 0.054 146 0.12 49
IV.CESI.HHZ. 2021-09-25T12:18:37.47 0.6 undecidable manual S 289 0.0603 142 0.1 49
IV.NRCA.HHZ. 2021-09-25T12:18:37.17 0.1 undecidable manual P 148 0.179 98 0.01 97
IV.FDMO.HHZ. 2021-09-25T12:18:37.76 0.6 undecidable manual S 56 0.0917 126 -0.28 47
IV.CSP1.EHZ. 2021-09-25T12:18:37.44 0.1 positive manual P 57 0.1943 97 0.03 98
IV.MML1.EHZ. 2021-09-25T12:18:36.30 0.1 undecidable manual P 356 0.1286 110 -0.02 99
IT.MTCL.HGZ. 2021-09-25T12:18:36.52 0.6 undecidable manual S 54 0.0153 170 -0.3 48
IT.MTCL.HGZ. 2021-09-25T12:18:35.12 0.1 undecidable manual P 54 0.0153 170 0.05 100
IV.FDMO.HHZ. 2021-09-25T12:18:35.81 0.3 undecidable manual P 56 0.0917 126 0.04 74
IV.FEMA.HNZ. 2021-09-25T12:18:35.47 0.1 undecidable manual P 115 0.054 146 0.15 98
IV.CESI.HHZ. 2021-09-25T12:18:35.53 0.6 undecidable manual P 289 0.0603 142 0.15 49
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:1 0.0001445 0.16 AML other m 2021-09-25T12:18:37.67
IV.CESI.HHN. ML:1.1 0.000165 0.08 AML other m 2021-09-25T12:18:37.67
IV.FDMO.HHE. ML:1.1 0.0001425 1.84 AML other m 2021-09-25T12:18:38.00
IV.FDMO.HHN. ML:1 0.00010155 0.08 AML other m 2021-09-25T12:18:38.19
IV.MML1.EHE. ML:0.8 5.52E-5 0.86 AML other m 2021-09-25T12:18:39.66
IV.MML1.EHN. ML:0.7 4.74E-5 0.26 AML other m 2021-09-25T12:18:39.97
IV.NRCA.HHN. ML:1.2 0.00011885 0.12 AML other m 2021-09-25T12:18:40.56
IV.NRCA.HHE. ML:1.1 8.825E-5 0.08 AML other m 2021-09-25T12:18:40.89
IV.ASSB.HHE. ML:0.9 4.185E-5 0.3 AML other m 2021-09-25T12:18:42.58
IV.ASSB.HHN. ML:0.9 3.805E-5 0.42 AML other m 2021-09-25T12:18:42.55
IV.RMP.HHE. ML:3 0.000649 1.7 AML other m 2021-09-25T12:19:01.85
IV.RMP.HHN. ML:3.1 0.0007645 0.1 AML other m 2021-09-25T12:19:01.16
ST.CARE.EHN. ML:2.7 2.5436E-5 0.52 AML other m 2021-09-25T12:19:25.32
IV.MAGA.HHE. ML:3.1 8.85E-5 0.9 AML other m 2021-09-25T12:20:02.87
IV.MAGA.HHN. ML:3 8.585E-5 0.1 AML other m 2021-09-25T12:20:03.46
ST.CARE.EHE. ML:2.3 1.1685E-5 0.58 AML other m 2021-09-25T12:20:10.46
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