Earthquake with magnitude of ML 1.4 on date 19-10-2021 and time 04:41:17 (UTC) in region 4 km E Bolognola (MC)

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

  • 19-10-2021 04:41:17 (UTC)
  • 19-10-2021 06:41:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.001, 13.27 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 4 142 142
Sarnano MC 5 3264 3406
Amandola FM 7 3629 7035
Acquacanina MC 8 121 7156
Montefortino FM 9 1178 8334
Gualdo MC 9 815 9149
Fiastra MC 10 559 9708
Montemonaco AP 12 604 10312
Cessapalombo MC 12 512 10824
Ussita MC 12 444 11268
San Ginesio MC 13 3498 14766
Comunanza AP 13 3166 17932
Penna San Giovanni MC 14 1108 19040
Monte San Martino MC 14 765 19805
Smerillo FM 14 365 20170
Camporotondo di Fiastrone MC 15 563 20733
Castelsantangelo sul Nera MC 15 281 21014
Sant'Angelo in Pontano MC 15 1436 22450
Fiordimonte MC 15 202 22652
Montefalcone Appennino FM 16 424 23076
Caldarola MC 16 1823 24899
Pievebovigliana MC 17 866 25765
Visso MC 17 1107 26872
Ripe San Ginesio MC 18 852 27724
Montegallo AP 18 523 28247
Force AP 19 1354 29601
Pieve Torina MC 19 1458 31059
Belforte del Chienti MC 19 1886 32945
Santa Vittoria in Matenano FM 19 1330 34275
Palmiano AP 19 196 34471
Colmurano MC 20 1263 35734

Municipalities with at least 50000 inhabitants

An earthquake occurred to
46 Km E of Foligno (57155 inhabitants)
52 Km NW of Teramo (54892 inhabitants)
71 Km NE of Terni (111501 inhabitants)
72 Km S of Ancona (100861 inhabitants)
73 Km E of Perugia (166134 inhabitants)
73 Km N of L'Aquila (69753 inhabitants)
90 Km NW of Montesilvano (53738 inhabitants)
96 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 1.4 2021-10-19
04:41:17
43.0008 13.2702 26 2021-10-19
04:48:15
Sala Sismica INGV-Roma 96747141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-19 04:41:17 ± 0.1
Latitude 43.0008 ± 0.0036
Longitude 13.2702 ± 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 96747141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 441
Semi-minor axis of confidence ellipse (meter) 296
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 248
Circular confidence region, given by single value of horizontal uncertainty (meter) 440
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 63
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 26
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) 0.49283
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 14
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 96747141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-19 04:48:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GIUL.HHZ. 2021-10-19T04:42:04.14 3.0 undecidable manual Sg 3.63 0
IV.FIR.HHZ. 2021-10-19T04:41:49.06 3.0 undecidable manual Pg 4.47 0
IV.PIEI.HHZ. 2021-10-19T04:41:43.74 3.0 undecidable manual S 0.04 0
IV.ASSB.HHZ. 2021-10-19T04:41:34.35 0.3 undecidable manual S 276 0.4488 111 0.27 67
IV.SMA1.EHZ. 2021-10-19T04:41:32.13 0.3 undecidable manual S 173 0.3732 115 0.11 70
IV.EL6.EHZ. 2021-10-19T04:41:31.68 0.3 undecidable manual S 340 0.3507 117 0.26 69
IV.CESI.HHZ. 2021-10-19T04:41:29.62 0.6 undecidable manual S 271 0.2671 125 0.32 46
IV.MML1.EHZ. 2021-10-19T04:41:28.97 0.3 undecidable manual S 297 0.2455 128 0.19 71
IV.NRCA.HHZ. 2021-10-19T04:41:27.89 0.3 undecidable manual S 214 0.2023 134 0.07 73
IV.ASSB.HHZ. 2021-10-19T04:41:27.03 0.1 undecidable manual P 276 0.4488 111 -0.09 93
IV.RM33.EHZ. 2021-10-19T04:41:27.68 0.1 undecidable manual P 185 0.4928 109 -0.15 91
IV.FDMO.HHZ. 2021-10-19T04:41:26.32 0.3 undecidable manual S 285 0.1385 146 -0.27 70
IV.ARVD.HHZ. 2021-10-19T04:41:26.15 3.0 undecidable manual P 0
IV.MC2.EHZ. 2021-10-19T04:41:26.36 0.3 undecidable manual S 214 0.107 152 0.24 72
IV.MF5.EHZ. 2021-10-19T04:41:26.98 0.3 undecidable manual S 95 0.1394 145 0.37 70
IV.GAVE.EHZ. 2021-10-19T04:41:26.72 0.1 undecidable manual P 222 0.4137 113 0.16 91
IV.MMO1.EHZ. 2021-10-19T04:41:25.92 0.3 undecidable manual S 158 0.1097 152 -0.23 72
IV.SMA1.EHZ. 2021-10-19T04:41:25.83 0.1 undecidable manual P 173 0.3732 115 -0.1 95
IV.CSP1.EHZ. 2021-10-19T04:41:25.72 0.3 undecidable manual S 332 0.1025 153 -0.33 70
IV.GUMA.HHZ. 2021-10-19T04:41:25.89 0.3 undecidable manual S 38 0.0782 159 0.13 75
IV.EL6.EHZ. 2021-10-19T04:41:25.46 0.1 undecidable manual P 340 0.3507 117 -0.12 94
IV.MNTT.EHZ. 2021-10-19T04:41:24.46 3.0 undecidable manual P 0
IV.CESI.HHZ. 2021-10-19T04:41:24.36 0.1 undecidable manual P 271 0.2671 125 0 97
IV.NRCA.HHZ. 2021-10-19T04:41:23.37 0.1 undecidable manual P 214 0.2023 134 -0.13 97
IV.MML1.EHZ. 2021-10-19T04:41:23.95 0.1 undecidable manual P 297 0.2455 128 -0.11 96
IV.GUMA.HHZ. 2021-10-19T04:41:22.25 0.1 undecidable manual P 38 0.0782 159 -0.06 100
IV.MF5.EHZ. 2021-10-19T04:41:22.91 0.1 undecidable manual P 95 0.1394 145 0.11 98
IV.MMO1.EHZ. 2021-10-19T04:41:22.43 0.1 undecidable manual P 158 0.1097 152 -0.11 99
IV.FDMO.HHZ. 2021-10-19T04:41:22.60 0.1 negative manual P 285 0.1385 146 -0.19 96
IV.CSP1.EHZ. 2021-10-19T04:41:22.23 1.0 undecidable manual P 332 0.1025 153 -0.25 24
IV.MC2.EHZ. 2021-10-19T04:41:22.57 0.1 undecidable manual P 214 0.107 152 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSP1.EHE. ML:1.5 0.0001965 1.56 AML other m 2021-10-19T04:41:25.82
IV.CSP1.EHN. ML:1.6 0.0002295 0.52 AML other m 2021-10-19T04:41:25.84
IV.GUMA.HHE. ML:1.7 0.000296 1.72 AML other m 2021-10-19T04:41:26.10
IV.GUMA.HHN. ML:1.6 0.000215 1.1 AML other m 2021-10-19T04:41:26.66
IV.FDMO.HHE. ML:1.7 0.0002735 0.16 AML other m 2021-10-19T04:41:26.44
IV.FDMO.HHN. ML:1.6 0.0002035 0.14 AML other m 2021-10-19T04:41:26.50
IV.NRCA.HHN. ML:1.5 0.000152 1.58 AML other m 2021-10-19T04:41:28.15
IV.NRCA.HHE. ML:1.5 0.000148 0.1 AML other m 2021-10-19T04:41:29.06
IV.MML1.EHN. ML:1.2 7.195E-5 0.2 AML other m 2021-10-19T04:41:29.18
IV.CESI.HHE. ML:1.6 0.000143 0.18 AML other m 2021-10-19T04:41:29.91
IV.MML1.EHE. ML:1.1 4.99E-5 1.02 AML other m 2021-10-19T04:41:29.31
IV.CESI.HHN. ML:1.4 9.22E-5 0.46 AML other m 2021-10-19T04:41:31.61
IV.SMA1.EHN. ML:1.2 3.86E-5 0.34 AML other m 2021-10-19T04:41:32.97
IV.SMA1.EHE. ML:1.2 4.415E-5 0.54 AML other m 2021-10-19T04:41:33.73
IV.GAVE.EHE. ML:1.2 3.53E-5 0.44 AML other m 2021-10-19T04:41:35.51
IV.ASSB.HHE. ML:1.3 4.905E-5 0.28 AML other m 2021-10-19T04:41:35.33
IV.ASSB.HHN. ML:1.2 4.215E-5 1.2 AML other m 2021-10-19T04:41:35.27
IV.RM33.EHN. ML:1.2 3.415E-5 0.32 AML other m 2021-10-19T04:41:36.78
IV.GAVE.EHN. ML:1.1 3.25E-5 1.24 AML other m 2021-10-19T04:41:36.81
IV.RM33.EHE. ML:1.2 3.63E-5 1.36 AML other m 2021-10-19T04:41:37.69
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