Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 20-07-2019 and time 21:06:48 (Italy) in region 4 km S Bolognola (MC)

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

  • 20-07-2019 19:06:48 (UTC)
  • 20-07-2019 21:06:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9570, 13.2210 at 8 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

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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
Ussita MC 7 444 586
Castelsantangelo sul Nera MC 9 281 867
Acquacanina MC 9 121 988
Montefortino FM 10 1178 2166
Fiastra MC 10 559 2725
Montemonaco AP 11 604 3329
Sarnano MC 11 3264 6593
Visso MC 11 1107 7700
Amandola FM 11 3629 11329
Fiordimonte MC 14 202 11531
Montegallo AP 16 523 12054
Gualdo MC 16 815 12869
Comunanza AP 16 3166 16035
Pievebovigliana MC 16 866 16901
Pieve Torina MC 17 1458 18359
Preci PG 17 724 19083
Cessapalombo MC 17 512 19595
Monte Cavallo MC 18 145 19740
San Ginesio MC 19 3498 23238
Smerillo FM 19 365 23603
Monte San Martino MC 20 765 24368
Montefalcone Appennino FM 20 424 24792
Camporotondo di Fiastrone MC 20 563 25355
Penna San Giovanni MC 20 1108 26463

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km E of Foligno (57155 inhabitants)
52 Km NW of Teramo (54892 inhabitants)
64 Km NE of Terni (111501 inhabitants)
69 Km N of L'Aquila (69753 inhabitants)
70 Km E of Perugia (166134 inhabitants)
77 Km SW of Ancona (100861 inhabitants)
90 Km NW of Montesilvano (53738 inhabitants)
98 Km NW of Pescara (121014 inhabitants)
100 Km S of Fano (60888 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.4 2019-07-20
19:06:48		 42.957 13.2212 8 2019-11-13
14:31:07		 Bollettino Sismico Italiano INGV 73414061
Reviewed
Rev100 		ML 1.4 2019-07-20
19:06:48		 42.9513 13.2232 10 2019-07-20
19:12:33		 Sala Sismica INGV-Roma 70745411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-20 19:06:48 ± 0.09
Latitude 42.9570 ± 0.0054
Longitude 13.2212 ± 0.0049
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 73414061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 569
Semi-minor axis of confidence ellipse (meter) 186
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 15
Circular confidence region, given by single value of horizontal uncertainty (meter) 570.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 87
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.50092
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 73414061
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-10-23 17:51:25

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 70745411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-20 19:12:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NARO.HHZ. 2019-07-20T19:07:13.29 3.0 undecidable manual S -3.52 0
IV.ARVD.HHZ. 2019-07-20T19:07:09.34 3.0 undecidable manual S 0.05 0
IV.MOMA.HHZ. 2019-07-20T19:07:07.51 0.6 undecidable manual S 252 55.5999 50 0.9 35
IV.ASSB.HHZ. 2019-07-20T19:07:04.39 0.6 undecidable manual S 282 46.62 50 0.18 45
IV.MOMA.HHZ. 2019-07-20T19:06:59.03 0.3 undecidable manual P 252 55.5999 50 0.05 68
IV.CESI.HNZ. 2019-07-20T19:06:58.41 0.6 undecidable manual S 282 26.2515 106 0.35 45
IV.MTRA.EHZ. 2019-07-20T19:06:58.00 0.6 undecidable manual S 147 26.4513 106 -0.12 47
IV.ASSB.HHZ. 2019-07-20T19:06:57.06 0.1 undecidable manual P 282 46.62 50 -0.54 83
IV.MML1.HNZ. 2019-07-20T19:06:57.95 0.6 undecidable manual S 311 26.6511 106 -0.25 46
IV.MF5.EHZ. 2019-07-20T19:06:56.62 0.6 undecidable manual S 80 19.6692 111 0.71 41
IV.MNTT.EHZ. 2019-07-20T19:06:55.58 0.3 undecidable manual P 69 32.5452 103 0.31 68
IV.NRCA.HHZ. 2019-07-20T19:06:55.21 0.6 undecidable manual S 212 16.1727 115 0.41 45
IV.FEMA.HNZ. 2019-07-20T19:06:54.73 0.6 undecidable manual S 272 13.875 119 0.63 42
IV.GUMA.HNZ. 2019-07-20T19:06:54.54 0.6 undecidable manual S 38 14.9739 117 0.13 48
IV.CESI.HNZ. 2019-07-20T19:06:53.93 0.1 undecidable manual P 282 26.2515 106 -0.12 95
IV.FDMO.HHZ. 2019-07-20T19:06:53.86 0.6 undecidable manual S 309 13.9749 119 -0.25 47
IV.MTRA.EHZ. 2019-07-20T19:06:53.62 0.3 undecidable manual P 147 26.4513 106 -0.47 66
IV.MML1.HNZ. 2019-07-20T19:06:53.72 0.1 undecidable manual P 311 26.6511 106 -0.41 89
IV.GUMA.HNZ. 2019-07-20T19:06:52.19 0.1 undecidable manual P 38 14.9739 117 0.25 94
IV.NRCA.HHZ. 2019-07-20T19:06:52.21 0.3 undecidable manual P 212 16.1727 115 0.04 73
IV.MF5.EHZ. 2019-07-20T19:06:52.94 0.1 undecidable manual P 80 19.6692 111 0.13 95
IV.MMO1.EHZ. 2019-07-20T19:06:52.80 0.6 undecidable manual S 127 10.6782 126 -0.35 46
IV.FDMO.HHZ. 2019-07-20T19:06:51.53 0.1 undecidable manual P 309 13.9749 119 -0.24 94
IV.MC2.EHZ. 2019-07-20T19:06:51.98 0.6 undecidable manual S 207 5.6943 144 0.08 49
IV.FEMA.HNZ. 2019-07-20T19:06:51.94 0.1 undecidable manual P 272 13.875 119 0.18 96
IV.MC2.EHZ. 2019-07-20T19:06:50.47 0.1 positive manual P 207 5.6943 144 -0.02 100
IV.MMO1.EHZ. 2019-07-20T19:06:50.92 0.1 positive manual P 127 10.6782 126 -0.29 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:1.4 0.0002615 0.72 AML other m 2019-07-20T19:06:54.36
IV.FDMO.HHN. ML:1.2 0.0001885 0.46 AML other m 2019-07-20T19:06:54.67
IV.NRCA.HHE. ML:1.6 0.000432 0.92 AML other m 2019-07-20T19:06:55.51
IV.NRCA.HHN. ML:1.6 0.0003685 0.14 AML other m 2019-07-20T19:06:57.61
IV.MTRA.EHN. ML:1.3 0.0001045 1.48 AML other m 2019-07-20T19:06:59.25
IV.MTRA.EHE. ML:1.3 0.0001235 0.28 AML other m 2019-07-20T19:06:59.27
IV.MF5.EHE. ML:1.4 0.00022000000000000003 1.4 AML other m 2019-07-20T19:07:01.16
IV.MF5.EHN. ML:1.4 0.000203 0.66 AML other m 2019-07-20T19:07:01.43
IV.MNTT.EHN. ML:1.8 0.0002685 0.28 AML other m 2019-07-20T19:07:04.00
IV.ASSB.HHN. ML:1.2 0.000051699999999999996 0.44 AML other m 2019-07-20T19:07:05.74
IV.ASSB.HHE. ML:1.3 0.0000528 1.26 AML other m 2019-07-20T19:07:07.94
IV.MNTT.EHE. ML:1.6 0.00018449999999999999 0.56 AML other m 2019-07-20T19:07:09.36
IV.MOMA.HHE. ML:1.3 0.000046899999999999995 1.2 AML other m 2019-07-20T19:07:09.80
IV.ARVD.HHE. ML:1.2 0.0000279 1.46 AML other m 2019-07-20T19:07:10.97
IV.MOMA.HHN. ML:1.2 0.00003645 1.14 AML other m 2019-07-20T19:07:10.28
IV.ARVD.HHN. ML:0.9 0.0000166 0.5 AML other m 2019-07-20T19:07:11.16
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