Earthquake with magnitude of ML 0.7 on date 12-09-2021 and time 13:39:47 (Italy) in region 2 km E Bolognola (MC)

A magnitude ML 0.7 earthquake occured in region: 2 km E Bolognola (MC), on

  • 12-09-2021 11:39:47 (UTC)
  • 12-09-2021 13:39:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43, 13.255 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
Bolognola MC 2 142 142
Sarnano MC 6 3264 3406
Acquacanina MC 7 121 3527
Amandola FM 9 3629 7156
Fiastra MC 9 559 7715
Montefortino FM 9 1178 8893
Gualdo MC 10 815 9708
Ussita MC 11 444 10152
Cessapalombo MC 12 512 10664
Montemonaco AP 13 604 11268
San Ginesio MC 13 3498 14766
Comunanza AP 14 3166 17932
Fiordimonte MC 14 202 18134
Castelsantangelo sul Nera MC 14 281 18415
Camporotondo di Fiastrone MC 15 563 18978
Penna San Giovanni MC 15 1108 20086
Visso MC 16 1107 21193
Monte San Martino MC 16 765 21958
Pievebovigliana MC 16 866 22824
Smerillo FM 16 365 23189
Caldarola MC 16 1823 25012
Sant'Angelo in Pontano MC 16 1436 26448
Montefalcone Appennino FM 17 424 26872
Pieve Torina MC 17 1458 28330
Belforte del Chienti MC 18 1886 30216
Ripe San Ginesio MC 19 852 31068
Montegallo AP 19 523 31591
Muccia MC 19 915 32506
Force AP 20 1354 33860
Santa Vittoria in Matenano FM 20 1330 35190
Palmiano AP 20 196 35386

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km E of Foligno (57155 inhabitants)
53 Km NW of Teramo (54892 inhabitants)
70 Km NE of Terni (111501 inhabitants)
71 Km E of Perugia (166134 inhabitants)
72 Km SW of Ancona (100861 inhabitants)
73 Km N of L'Aquila (69753 inhabitants)
91 Km NW of Montesilvano (53738 inhabitants)
96 Km S of Fano (60888 inhabitants)
98 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 0.7 2021-09-12
11:39:47
42.9998 13.2552 26 2021-09-12
11:47:05
Sala Sismica INGV-Roma 95344841
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-12 11:39:47 ± 0.25
Latitude 42.9998 ± 0.0108
Longitude 13.2552 ± 0.0123
Depth (km) 26 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95344841

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1064
Semi-minor axis of confidence ellipse (meter) 882
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 229
Circular confidence region, given by single value of horizontal uncertainty (meter) 1060
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 117
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.09893
Epicentral distance of station farthest from the epicenter (degree) 0.45506
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 95344841
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-12 11:47:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2021-09-12T11:39:56.17 0.3 undecidable manual S 287 0.1277 148 -0.09 74
IV.MF5.EHZ. 2021-09-12T11:39:56.63 0.3 undecidable manual S 95 0.1502 144 0 74
IV.CSP1.EHZ. 2021-09-12T11:39:55.79 0.3 undecidable manual S 338 0.0989 155 -0.06 75
IV.MC2.EHZ. 2021-09-12T11:39:55.91 0.3 undecidable manual S 209 0.1007 154 0.04 74
IV.TERO.HHZ. 2021-09-12T11:39:55.99 1.0 undecidable manual P 146 0.4551 111 -0.98 17
IV.FDMO.HHZ. 2021-09-12T11:39:52.52 0.1 undecidable manual P 287 0.1277 148 0.04 99
IV.MF5.EHZ. 2021-09-12T11:39:52.75 0.1 undecidable manual P 95 0.1502 144 0.06 99
IV.CSP1.EHZ. 2021-09-12T11:39:52.29 0.1 undecidable manual P 338 0.0989 155 0.05 100
IV.MC2.EHZ. 2021-09-12T11:39:52.33 0.1 undecidable manual P 209 0.1007 154 0.08 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.7 2.37E-5 1 AML other m 2021-09-12T11:39:56.41
IV.FDMO.HHN. ML:0.7 2.74E-5 0.32 AML other m 2021-09-12T11:39:56.48
IV.CSP1.EHE. ML:0.8 3.58468705E-5 0.1792 AML other m 2021-09-12T11:39:55.96
IV.CSP1.EHN. ML:0.7 3.2242325E-5 0.7424 AML other m 2021-09-12T11:39:56.28
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