Earthquake with magnitude of ML 1.4 on date 12-09-2021 and time 13:30:40 (Italy) in region 4 km SW Sarnano (MC)

A magnitude ML 1.4 earthquake occured in region: 4 km SW Sarnano (MC), on

  • 12-09-2021 11:30:40 (UTC)
  • 12-09-2021 13:30:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.001, 13.285 at 26 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
Sarnano MC 4 3264 3264
Bolognola MC 5 142 3406
Amandola FM 6 3629 7035
Montefortino FM 8 1178 8213
Gualdo MC 9 815 9028
Acquacanina MC 10 121 9149
Fiastra MC 11 559 9708
Comunanza AP 12 3166 12874
Montemonaco AP 12 604 13478
San Ginesio MC 12 3498 16976
Cessapalombo MC 12 512 17488
Penna San Giovanni MC 13 1108 18596
Monte San Martino MC 13 765 19361
Smerillo FM 13 365 19726
Ussita MC 13 444 20170
Sant'Angelo in Pontano MC 14 1436 21606
Montefalcone Appennino FM 14 424 22030
Camporotondo di Fiastrone MC 15 563 22593
Castelsantangelo sul Nera MC 16 281 22874
Caldarola MC 16 1823 24697
Fiordimonte MC 16 202 24899
Force AP 17 1354 26253
Ripe San Ginesio MC 17 852 27105
Santa Vittoria in Matenano FM 17 1330 28435
Visso MC 18 1107 29542
Pievebovigliana MC 18 866 30408
Montegallo AP 18 523 30931
Palmiano AP 18 196 31127
Belforte del Chienti MC 19 1886 33013
Servigliano FM 19 2336 35349
Colmurano MC 19 1263 36612
Falerone FM 20 3337 39949
Pieve Torina MC 20 1458 41407

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 Km E of Foligno (57155 inhabitants)
51 Km NW of Teramo (54892 inhabitants)
71 Km S of Ancona (100861 inhabitants)
71 Km NE of Terni (111501 inhabitants)
73 Km N of L'Aquila (69753 inhabitants)
74 Km E of Perugia (166134 inhabitants)
89 Km NW of Montesilvano (53738 inhabitants)
96 Km S of Fano (60888 inhabitants)
96 Km NW of Pescara (121014 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 1.4 2021-09-12
11:30:40
43.0007 13.2853 26 2021-09-12
11:38:31
Sala Sismica INGV-Roma 95344091
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-12 11:30:40 ± 0.13
Latitude 43.0007 ± 0.0045
Longitude 13.2853 ± 0.0061
Depth (km) 26 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95344091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 501
Semi-minor axis of confidence ellipse (meter) 404
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 249
Circular confidence region, given by single value of horizontal uncertainty (meter) 500
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.07195
Epicentral distance of station farthest from the epicenter (degree) 0.49373
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 95344091
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-12 11:38:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RM33.EHZ. 2021-09-12T11:30:58.78 0.6 undecidable manual S 186 0.4937 109 0.2 44
IV.ASSB.HHZ. 2021-09-12T11:30:57.92 0.6 undecidable manual S 275 0.4596 111 0.3 44
IV.GAVE.EHZ. 2021-09-12T11:30:57.32 0.6 undecidable manual S 223 0.4209 113 0.77 38
IV.TERO.HHZ. 2021-09-12T11:30:57.81 0.6 undecidable manual S 148 0.4443 112 0.62 41
IV.SMA1.EHZ. 2021-09-12T11:30:55.15 0.6 undecidable manual S 174 0.3714 116 -0.08 47
IV.MTRA.EHZ. 2021-09-12T11:30:52.14 0.6 undecidable manual S 161 0.2572 127 -0.19 47
IV.MML1.EHZ. 2021-09-12T11:30:52.51 0.6 undecidable manual S 296 0.2554 127 0.23 46
IV.MF5.EHZ. 2021-09-12T11:30:50.18 0.6 undecidable manual S 96 0.1277 148 0.46 45
IV.RM33.EHZ. 2021-09-12T11:30:50.87 0.1 undecidable manual P 186 0.4937 109 -0.19 89
IV.NRCA.HHZ. 2021-09-12T11:30:50.90 0.6 undecidable manual S 217 0.2086 134 -0.34 46
IV.ASSB.HHZ. 2021-09-12T11:30:50.39 0.3 undecidable manual P 275 0.4596 111 -0.11 69
IV.TERO.HHZ. 2021-09-12T11:30:50.27 0.3 undecidable manual P 148 0.4443 112 0.02 70
IV.GUMA.HHZ. 2021-09-12T11:30:49.30 0.6 undecidable manual S 30 0.0719 161 0.29 47
IV.CSP1.EHZ. 2021-09-12T11:30:49.36 0.3 undecidable manual S 327 0.1088 153 -0.08 74
IV.PF6.EHE. 2021-09-12T11:30:49.99 0.6 undecidable manual S 334 0.152 143 -0.14 48
IV.MC2.EHZ. 2021-09-12T11:30:49.51 0.6 undecidable manual S 218 0.1133 151 0 50
IV.GAVE.EHZ. 2021-09-12T11:30:49.95 0.1 undecidable manual P 223 0.4209 113 0.06 93
IV.MMO1.EHZ. 2021-09-12T11:30:49.01 0.3 undecidable manual S 163 0.1061 153 -0.39 69
IV.FDMO.HHZ. 2021-09-12T11:30:49.77 0.6 undecidable manual S 284 0.1493 144 -0.3 47
IV.SMA1.EHZ. 2021-09-12T11:30:48.89 0.1 undecidable manual P 174 0.3714 116 -0.23 91
IV.MML1.EHZ. 2021-09-12T11:30:47.67 0.1 undecidable manual P 296 0.2554 127 0.25 93
IV.MTRA.EHZ. 2021-09-12T11:30:47.20 0.1 undecidable manual P 161 0.2572 127 -0.25 92
IV.FDMO.HHZ. 2021-09-12T11:30:46.05 0.1 undecidable manual P 284 0.1493 144 -0.09 98
IV.MF5.EHZ. 2021-09-12T11:30:46.24 0.1 negative manual P 96 0.1277 148 0.29 94
IV.NRCA.HHZ. 2021-09-12T11:30:46.63 0.1 positive manual P 217 0.2086 134 -0.19 95
IV.PF6.EHE. 2021-09-12T11:30:46.10 0.1 undecidable manual P 334 0.152 143 -0.08 98
IV.MMO1.EHZ. 2021-09-12T11:30:45.62 0.1 undecidable manual P 163 0.1061 153 -0.14 97
IV.GUMA.HHZ. 2021-09-12T11:30:45.70 0.1 negative manual P 30 0.0719 161 0.17 98
IV.CSP1.EHZ. 2021-09-12T11:30:45.79 0.1 undecidable manual P 327 0.1088 153 0.01 100
IV.MC2.EHZ. 2021-09-12T11:30:45.86 0.1 positive manual P 218 0.1133 151 0.04 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GUMA.HHN. ML:1.6 0.000233 0.24 AML other m 2021-09-12T11:30:49.59
IV.CSP1.EHN. ML:1.8 0.000348 0.44 AML other m 2021-09-12T11:30:49.49
IV.GUMA.HHE. ML:1.7 0.000289 0.26 AML other m 2021-09-12T11:30:49.54
IV.FDMO.HHE. ML:1.4 0.000141 1.8 AML other m 2021-09-12T11:30:49.94
IV.FDMO.HHN. ML:1.5 0.0001475 0.46 AML other m 2021-09-12T11:30:50.01
IV.CSP1.EHE. ML:1.7 0.000245 0.44 AML other m 2021-09-12T11:30:50.43
IV.MF5.EHN. ML:1.6 0.000213 0.52 AML other m 2021-09-12T11:30:50.52
IV.MF5.EHE. ML:1.3 0.0001054 0.24 AML other m 2021-09-12T11:30:50.57
IV.NRCA.HHE. ML:1.5 0.0001395 0.06 AML other m 2021-09-12T11:30:51.46
IV.NRCA.HHN. ML:1.6 0.0001505 0.54 AML other m 2021-09-12T11:30:51.62
IV.MTRA.EHN. ML:1.4 9.765E-5 0.32 AML other m 2021-09-12T11:30:52.66
IV.MML1.EHE. ML:1.2 6.11E-5 1.16 AML other m 2021-09-12T11:30:52.15
IV.MTRA.EHE. ML:1.5 0.00011215 1.52 AML other m 2021-09-12T11:30:52.77
IV.MML1.EHN. ML:1.2 6.575E-5 0.26 AML other m 2021-09-12T11:30:53.12
IV.SMA1.EHE. ML:1.3 4.85E-5 0.38 AML other m 2021-09-12T11:30:55.58
IV.SMA1.EHN. ML:1.3 4.805E-5 0.44 AML other m 2021-09-12T11:30:56.62
IV.GAVE.EHN. ML:1.4 6.03E-5 1.2 AML other m 2021-09-12T11:30:58.62
IV.ASSB.HHE. ML:1 2.345E-5 1.16 AML other m 2021-09-12T11:30:58.09
IV.GAVE.EHE. ML:1.5 7.52E-5 0.28 AML other m 2021-09-12T11:30:58.83
IV.ASSB.HHN. ML:1.1 2.965E-5 0.64 AML other m 2021-09-12T11:30:59.45
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