Earthquake with magnitude of ML 0.9 on date 12-09-2021 and time 11:45:38 (Italy) in region 4 km SW Monte Cavallo (MC)

A magnitude ML 0.9 earthquake occured in region: 4 km SW Monte Cavallo (MC), on

  • 12-09-2021 09:45:38 (UTC)
  • 12-09-2021 11:45:38 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.975, 12.964 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 4 145 145
Sellano PG 10 1079 1224
Pieve Torina MC 11 1458 2682
Serravalle di Chienti MC 11 1070 3752
Visso MC 11 1107 4859
Preci PG 12 724 5583
Fiordimonte MC 12 202 5785
Muccia MC 14 915 6700
Pievebovigliana MC 14 866 7566
Ussita MC 15 444 8010
Fiastra MC 17 559 8569
Cerreto di Spoleto PG 18 1075 9644
Castelsantangelo sul Nera MC 18 281 9925
Acquacanina MC 18 121 10046
Sefro MC 19 422 10468
Valtopina PG 19 1398 11866
Camerino MC 20 6974 18840

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km E of Foligno (57155 inhabitants)
49 Km E of Perugia (166134 inhabitants)
53 Km NE of Terni (111501 inhabitants)
70 Km NW of Teramo (54892 inhabitants)
78 Km NW of L'Aquila (69753 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
94 Km NE of Viterbo (67173 inhabitants)
97 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 0.9 2021-09-12
09:45:38
42.9753 12.9642 12 2021-09-12
10:06:25
Sala Sismica INGV-Roma 95338791
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-12 09:45:38 ± 0.05
Latitude 42.9753 ± 0.0027
Longitude 12.9642 ± 0.0037
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95338791

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 345
Semi-minor axis of confidence ellipse (meter) 129
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 251
Circular confidence region, given by single value of horizontal uncertainty (meter) 340
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 97
Number of associated phases, regardless of their use for origin computation 56
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.43887
Number of stations at which the event was observed 41
Number of stations from which data was used for origin computation 13
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 95338791
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-12 10:06:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
AC.KBN.HHZ. 2021-09-12T09:48:20.79 3.0 undecidable manual Sn -4 0
IV.ALJA.HHZ. 2021-09-12T09:48:17.42 3.0 undecidable manual Sg 10.55 0
IV.MTGR.HHZ. 2021-09-12T09:48:15.72 3.0 undecidable manual Sg 12.25 0
IV.MSRU.HHZ. 2021-09-12T09:48:07.79 3.0 undecidable manual Sg 6.87 0
AC.KBN.HHZ. 2021-09-12T09:47:31.68 3.0 negative manual Pg 18.629999 0
IV.EUCT.HNZ. 2021-09-12T09:47:28.03 3.0 undecidable manual Sg 4.84 0
GU.RNCA.HHZ. 2021-09-12T09:47:27.92 3.0 undecidable manual Sg 10.04 0
IV.GRIS.EHZ. 2021-09-12T09:47:24.28 3.0 undecidable manual Sn -6.06 0
IV.MCEL.HHZ. 2021-09-12T09:47:20.78 3.0 undecidable manual Sg 3.2 0
IV.CADC.EHZ. 2021-09-12T09:47:14.66 3.0 undecidable manual Sg 1.08 0
IV.PETRA.HHZ. 2021-09-12T09:47:12.86 3.0 undecidable manual Pg 10.69 0
OX.CIMO.HHZ. 2021-09-12T09:47:06.00 3.0 undecidable manual Sn -7.06 0
NI.PALA.HHZ. 2021-09-12T09:47:03.41 3.0 undecidable manual Sn -6.89 0
GU.CANO.HHZ. 2021-09-12T09:46:51.50 3.0 undecidable manual Pg 10.42 0
IV.SELL.HHZ. 2021-09-12T09:46:50.92 3.0 negative manual Pn -4.64 0
CH.FUSIO.HHZ. 2021-09-12T09:46:49.23 3.0 positive manual Pn -3.45 0
IV.SPS2.HHZ. 2021-09-12T09:46:43.54 3.0 negative manual Pn -6.82 0
IV.CADC.EHZ. 2021-09-12T09:46:39.13 3.0 negative manual Pg 6.09 0
IV.SARZ.HHZ. 2021-09-12T09:46:38.13 3.0 positive manual Pn 0.12 0
IV.SGG.HHZ. 2021-09-12T09:46:37.61 3.0 undecidable manual Sg -4.5 0
IV.SLCN.HHZ. 2021-09-12T09:46:35.08 3.0 undecidable manual Pg 1.49 0
IV.MCEL.HHZ. 2021-09-12T09:46:35.79 3.0 positive manual Pg 0.5 0
IV.ZEN8.EHZ. 2021-09-12T09:46:33.01 3.0 undecidable manual Pg 1.97 0
IX.SCL3.EHZ.02 2021-09-12T09:46:30.38 3.0 negative manual Pg 1.01 0
IV.BRSN.HNZ. 2021-09-12T09:46:25.47 3.0 undecidable manual S -4.09 0
IV.NDIM.HHZ. 2021-09-12T09:46:18.09 3.0 positive manual Pn -4.15 0
IV.MIDA.HHZ. 2021-09-12T09:46:06.85 3.0 negative manual Pn -4.79 0
IV.PE3.EHZ. 2021-09-12T09:46:02.67 3.0 undecidable manual S -8.46 0
IV.VCEL.EHZ. 2021-09-12T09:45:57.00 3.0 negative manual P -2.24 0
IV.MNTT.EHZ. 2021-09-12T09:45:52.83 3.0 undecidable manual S 2.27 0
IV.NARO.HHZ. 2021-09-12T09:45:51.97 3.0 undecidable manual P -4.09 0
IV.EL6.EHZ. 2021-09-12T09:45:51.68 0.3 undecidable manual S 16 0.3678 91 0.25 68
IV.GAVE.EHE. 2021-09-12T09:45:49.00 0.3 undecidable manual S 190 0.2878 91 -0.05 72
IV.SNTG.HHZ. 2021-09-12T09:45:49.04 0.6 undecidable manual S 356 0.2797 91 0.21 46
IV.ASSB.HHN. 2021-09-12T09:45:47.10 0.3 undecidable manual S 287 0.2329 92 -0.34 68
IV.SMA1.EHZ. 2021-09-12T09:45:47.29 0.3 undecidable manual P 142 0.4389 91 0.28 66
IV.CSP1.EHZ. 2021-09-12T09:45:46.61 0.3 undecidable manual S 56 0.2104 92 -0.17 71
IV.EL6.EHZ. 2021-09-12T09:45:45.82 0.1 undecidable manual P 16 0.3678 91 0.04 94
IV.NRCA.HHZ. 2021-09-12T09:45:45.51 0.3 undecidable manual S 142 0.179 93 -0.34 69
IV.MC2.EHE. 2021-09-12T09:45:45.89 0.3 undecidable manual S 111 0.1763 93 0.13 72
IV.MML1.EHZ. 2021-09-12T09:45:44.59 0.6 undecidable manual S 2 0.1385 99 -0.04 49
IV.SNTG.HHZ. 2021-09-12T09:45:44.28 0.1 undecidable manual P 356 0.2797 91 0 96
IV.GAVE.EHE. 2021-09-12T09:45:44.61 0.1 undecidable manual P 190 0.2878 91 0.2 92
IV.CSP1.EHZ. 2021-09-12T09:45:43.16 0.1 undecidable manual P 56 0.2104 92 0.06 97
IV.ASSB.HHN. 2021-09-12T09:45:43.22 0.6 undecidable manual P 287 0.2329 92 -0.26 46
IV.FDMO.HHZ. 2021-09-12T09:45:43.48 0.3 undecidable manual S 56 0.1088 112 -0.31 70
IV.MC2.EHE. 2021-09-12T09:45:42.61 0.1 undecidable manual P 111 0.1763 93 0.1 96
IV.FEMA.HNZ. 2021-09-12T09:45:42.69 0.6 undecidable manual S 102 0.0639 137 -0.02 50
IV.CESI.HNE. 2021-09-12T09:45:42.46 0.3 undecidable manual S 304 0.0522 144 -0.04 75
IV.NRCA.HHZ. 2021-09-12T09:45:42.47 0.1 negative manual P 142 0.179 93 -0.09 97
IV.FDMO.HHZ. 2021-09-12T09:45:41.39 0.1 undecidable manual P 56 0.1088 112 0.01 99
IV.MML1.EHZ. 2021-09-12T09:45:41.89 0.1 undecidable manual P 2 0.1385 99 0.03 99
IT.MTCL.HGZ. 2021-09-12T09:45:41.87 0.3 undecidable manual S 54 0.0315 158 -0.33 71
IV.CESI.HNE. 2021-09-12T09:45:40.84 0.1 undecidable manual P 304 0.0522 144 0.21 96
IT.MTCL.HGZ. 2021-09-12T09:45:40.49 0.1 undecidable manual P 54 0.0315 158 0.03 100
IV.FEMA.HNZ. 2021-09-12T09:45:40.93 0.1 undecidable manual P 102 0.0639 137 0.18 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:0.8 6.315E-5 0.34 AML other m 2021-09-12T09:45:44.47
IV.FDMO.HHE. ML:1.1 0.00012224672 0.2176 AML other m 2021-09-12T09:45:43.76
IV.MML1.EHE. ML:0.5 3.210194E-5 0.16 AML other m 2021-09-12T09:45:44.85
IV.MML1.EHN. ML:0.4 2.1941715E-5 0.0576 AML other m 2021-09-12T09:45:45.01
IV.NRCA.HNE. ML:1.3 0.000139000215 0.0832 AML other m 2021-09-12T09:45:45.86
IV.NRCA.HNN. ML:1.6 0.0002784477 0.1152 AML other m 2021-09-12T09:45:45.73
IV.CSP1.EHE. ML:1.1 8.174643E-5 0.1984 AML other m 2021-09-12T09:45:47.14
IV.CSP1.EHN. ML:1.2 0.000101230695 0.2624 AML other m 2021-09-12T09:45:46.96
IV.SNTG.HHE. ML:0.6 1.82571505E-5 0.1152 AML other m 2021-09-12T09:45:49.65
IV.SNTG.HHN. ML:0.6 1.8268475E-5 0.1216 AML other m 2021-09-12T09:45:49.55
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