Earthquake with magnitude of ML 0.8 on date 12-09-2021 and time 13:38:56 (Italy) in region 3 km E Bolognola (MC)

A magnitude ML 0.8 earthquake occured in region: 3 km E Bolognola (MC), on

  • 12-09-2021 11:38:56 (UTC)
  • 12-09-2021 13:38:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.99, 13.261 at 27 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
Bolognola MC 3 142 142
Sarnano MC 6 3264 3406
Amandola FM 8 3629 7035
Acquacanina MC 8 121 7156
Montefortino FM 8 1178 8334
Fiastra MC 10 559 8893
Gualdo MC 11 815 9708
Ussita MC 11 444 10152
Montemonaco AP 11 604 10756
Comunanza AP 13 3166 13922
Cessapalombo MC 13 512 14434
Castelsantangelo sul Nera MC 14 281 14715
San Ginesio MC 14 3498 18213
Fiordimonte MC 15 202 18415
Smerillo FM 15 365 18780
Penna San Giovanni MC 15 1108 19888
Monte San Martino MC 15 765 20653
Visso MC 15 1107 21760
Camporotondo di Fiastrone MC 16 563 22323
Montefalcone Appennino FM 16 424 22747
Pievebovigliana MC 16 866 23613
Sant'Angelo in Pontano MC 17 1436 25049
Caldarola MC 17 1823 26872
Montegallo AP 17 523 27395
Pieve Torina MC 18 1458 28853
Force AP 19 1354 30207
Palmiano AP 19 196 30403
Ripe San Ginesio MC 19 852 31255
Belforte del Chienti MC 20 1886 33141
Santa Vittoria in Matenano FM 20 1330 34471

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km E of Foligno (57155 inhabitants)
52 Km NW of Teramo (54892 inhabitants)
69 Km NE of Terni (111501 inhabitants)
72 Km N of L'Aquila (69753 inhabitants)
72 Km E of Perugia (166134 inhabitants)
73 Km S of Ancona (100861 inhabitants)
90 Km NW of Montesilvano (53738 inhabitants)
97 Km S of Fano (60888 inhabitants)
97 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 0.8 2021-09-12
11:38:56
42.9903 13.2607 27 2021-09-12
11:44:48
Sala Sismica INGV-Roma 95344711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-12 11:38:56 ± 0.22
Latitude 42.9903 ± 0.0063
Longitude 13.2607 ± 0.0086
Depth (km) 27 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95344711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 730
Semi-minor axis of confidence ellipse (meter) 468
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 228
Circular confidence region, given by single value of horizontal uncertainty (meter) 730
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 76
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.24462
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 95344711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-12 11:44:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
AC.KBN.HHZ. 2021-09-12T11:40:26.38 3.0 positive manual Pg 24.52 0
IV.MRLC.HHZ. 2021-09-12T11:40:17.91 3.0 undecidable manual Sg 12.69 0
IV.CMIS.HHZ. 2021-09-12T11:40:14.22 3.0 undecidable manual Sg 13.74 0
CR.STON.BHZ. 2021-09-12T11:40:12.10 3.0 undecidable manual Sn 14.41 0
IV.SERS.HHZ. 2021-09-12T11:40:11.64 3.0 undecidable manual Pg 20.66 0
IV.ILOS.HHZ. 2021-09-12T11:40:10.74 3.0 positive manual Pg 16.77 0
IV.PTCC.HHZ. 2021-09-12T11:39:58.17 3.0 undecidable manual Sn 1.91 0
IV.ZEN8.EHZ. 2021-09-12T11:39:58.04 3.0 undecidable manual Sn -4.97 0
IV.ESCV.HHZ. 2021-09-12T11:39:56.29 3.0 undecidable manual Pn -6.79 0
IV.EMSG.HHZ. 2021-09-12T11:39:55.68 3.0 positive manual Pn -6.57 0
IV.MFNL.HHZ. 2021-09-12T11:39:54.14 3.0 undecidable manual Pn -8.77 0
GU.MGRO.HHZ. 2021-09-12T11:39:47.29 3.0 undecidable manual Pg 3.73 0
IV.TOLF.HHZ. 2021-09-12T11:39:46.37 3.0 undecidable manual Sg 1.07 0
IV.SPS2.HHZ. 2021-09-12T11:39:45.84 3.0 negative manual Pn -0.67 0
IV.ZCCA.HHZ. 2021-09-12T11:39:43.45 3.0 undecidable manual Sn -3.38 0
IV.LPEL.HHZ. 2021-09-12T11:39:37.10 3.0 undecidable manual Sn 2.86 0
IV.CRAC.EHZ. 2021-09-12T11:39:35.49 3.0 undecidable manual Pn 1.62 0
IV.PTCC.HHZ. 2021-09-12T11:39:23.23 3.0 negative manual Pn 2.48 0
IV.MBAL.EHZ. 2021-09-12T11:39:22.83 3.0 undecidable manual Pn -1.32 0
IV.PE3.EHZ. 2021-09-12T11:39:20.20 3.0 undecidable manual Sn -4.7 0
IV.MNTV.EHZ. 2021-09-12T11:39:19.60 3.0 undecidable manual Pn -1.1 0
IV.VIVA.HHZ. 2021-09-12T11:39:16.35 3.0 positive manual Pg 2.39 0
IV.GIUL.HHZ. 2021-09-12T11:39:08.84 3.0 undecidable manual Pn -5.78 0
IV.MML1.EHZ. 2021-09-12T11:39:08.04 0.6 undecidable manual S 300 0.2446 130 0.54 43
IV.NRCA.HNN. 2021-09-12T11:39:06.36 0.6 undecidable manual S 214 0.1898 138 0.03 49
IV.MC2.EHZ. 2021-09-12T11:39:05.01 0.3 undecidable manual S 214 0.0944 156 0.23 72
IV.PF6.EHZ. 2021-09-12T11:39:05.44 0.6 undecidable manual S 342 0.1556 144 -0.24 48
IV.MF5.EHZ. 2021-09-12T11:39:05.63 0.3 undecidable manual S 91 0.1457 146 0.12 73
IV.FDMO.HHZ. 2021-09-12T11:39:05.26 0.3 undecidable manual S 290 0.1349 148 -0.08 74
IV.GUMA.HHE. 2021-09-12T11:39:04.81 0.6 undecidable manual S 37 0.0908 157 0.08 49
IV.CSP1.EHN. 2021-09-12T11:39:04.84 0.6 undecidable manual S 338 0.1097 153 -0.13 49
IV.MMO1.EHN. 2021-09-12T11:39:04.50 0.3 undecidable manual S 152 0.1025 154 -0.38 70
IV.NRCA.HNN. 2021-09-12T11:39:02.08 0.1 undecidable manual P 214 0.1898 138 0.06 99
IV.GUMA.HHE. 2021-09-12T11:39:01.18 0.1 undecidable manual P 37 0.0908 157 0.08 99
IV.MF5.EHZ. 2021-09-12T11:39:01.76 0.3 undecidable manual P 91 0.1457 146 0.21 72
IV.CSP1.EHN. 2021-09-12T11:39:01.27 0.1 undecidable manual P 338 0.1097 153 0.04 100
IV.FDMO.HHZ. 2021-09-12T11:39:01.52 0.3 undecidable manual P 290 0.1349 148 0.07 74
IV.MML1.EHZ. 2021-09-12T11:39:01.95 0.3 undecidable manual P 300 0.2446 130 -0.75 59
IV.MMO1.EHN. 2021-09-12T11:39:01.07 0.3 undecidable manual P 152 0.1025 154 -0.12 73
IV.MC2.EHZ. 2021-09-12T11:39:01.34 0.1 positive manual P 214 0.0944 156 0.21 97
IV.PF6.EHZ. 2021-09-12T11:39:01.59 0.1 undecidable manual P 342 0.1556 144 -0.06 98
IV.PE3.EHZ. 2021-09-12T11:39:01.57 3.0 undecidable manual P -1.56 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.8 3.7E-5 0.22 AML other m 2021-09-12T11:39:05.40
IV.FDMO.HHN. ML:0.8 3.526072E-5 0.1792 AML other m 2021-09-12T11:39:05.47
IV.MML1.EHE. ML:0.7 2.019367E-5 0.2432 AML other m 2021-09-12T11:39:08.49
IV.MML1.EHN. ML:0.8 2.34E-5 0.24 AML other m 2021-09-12T11:39:08.46
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