Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 16-08-2020 and time 04:43:48 (UTC) in region 3 km W Amandola (FM)

A magnitude ML 0.5 earthquake occured in region: 3 km W Amandola (FM), on

  • 16-08-2020 04:43:48 (UTC)
  • 16-08-2020 06:43:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9820, 13.3210 at 15 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.

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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
Amandola FM 3 3629 3629
Montefortino FM 5 1178 4807
Sarnano MC 6 3264 8071
Bolognola MC 8 142 8213
Comunanza AP 8 3166 11379
Montemonaco AP 9 604 11983
Gualdo MC 10 815 12798
Smerillo FM 11 365 13163
Monte San Martino MC 11 765 13928
Montefalcone Appennino FM 11 424 14352
Penna San Giovanni MC 12 1108 15460
Acquacanina MC 13 121 15581
San Ginesio MC 14 3498 19079
Force AP 14 1354 20433
Palmiano AP 15 196 20629
Sant'Angelo in Pontano MC 15 1436 22065
Fiastra MC 15 559 22624
Santa Vittoria in Matenano FM 15 1330 23954
Cessapalombo MC 15 512 24466
Ussita MC 15 444 24910
Montegallo AP 16 523 25433
Castelsantangelo sul Nera MC 17 281 25714
Camporotondo di Fiastrone MC 17 563 26277
Servigliano FM 18 2336 28613
Venarotta AP 18 2066 30679
Montelparo FM 18 778 31457
Roccafluvione AP 18 2010 33467
Ripe San Ginesio MC 18 852 34319
Monteleone di Fermo FM 19 395 34714
Falerone FM 19 3337 38051
Caldarola MC 19 1823 39874
Visso MC 20 1107 40981
Fiordimonte MC 20 202 41183
Rotella AP 20 906 42089

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 Km NW of Teramo (54892 inhabitants)
50 Km E of Foligno (57155 inhabitants)
70 Km N of L'Aquila (69753 inhabitants)
72 Km NE of Terni (111501 inhabitants)
73 Km S of Ancona (100861 inhabitants)
77 Km E of Perugia (166134 inhabitants)
85 Km NW of Montesilvano (53738 inhabitants)
93 Km NW of Pescara (121014 inhabitants)
99 Km NW of Chieti (51815 inhabitants)
99 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
Reviewed
Rev100 		ML 0.5 2020-08-16
04:43:48		 42.9823 13.321 15 2020-08-16
04:50:41		 Sala Sismica INGV-Roma 82032831
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-16 04:43:48 ± 0.16
Latitude 42.9823 ± 0.0072
Longitude 13.3210 ± 0.0061
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 82032831

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 787
Semi-minor axis of confidence ellipse (meter) 200
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 352
Circular confidence region, given by single value of horizontal uncertainty (meter) 790.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 140
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
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) 0.08274
Epicentral distance of station farthest from the epicenter (degree) 0.21584
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 82032831
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-16 04:50:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2020-08-16T04:43:57.56 0.3 undecidable manual S 226 23.5542 107 0.08 73
IV.FDMO.HHZ. 2020-08-16T04:43:56.55 0.6 undecidable manual S 288 19.869 112 -0.01 49
IV.MC2.EHZ. 2020-08-16T04:43:55.52 0.6 undecidable manual S 234 13.2756 127 0.49 45
IV.MMO1.EHZ. 2020-08-16T04:43:54.19 0.6 undecidable manual S 177 9.1797 140 -0.06 50
IV.MF5.EHZ. 2020-08-16T04:43:54.62 0.3 undecidable manual S 87 11.2776 133 0 75
IV.MNTT.EHZ. 2020-08-16T04:43:54.10 0.6 undecidable manual P 68 23.9538 107 0.31 46
IV.FDMO.HHZ. 2020-08-16T04:43:53.10 0.1 undecidable manual P 288 19.869 112 -0.09 97
IV.NRCA.HHZ. 2020-08-16T04:43:53.78 0.1 undecidable manual P 226 23.5542 107 0.05 98
IV.MF5.EHZ. 2020-08-16T04:43:52.08 0.1 undecidable manual P 87 11.2776 133 0.01 100
IV.MC2.EHZ. 2020-08-16T04:43:51.86 0.6 undecidable manual P 234 13.2756 127 -0.45 45
IV.MMO1.EHZ. 2020-08-16T04:43:51.76 0.1 undecidable manual P 177 9.1797 140 -0.09 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.5 0.0000216 0.2 AML other m 2020-08-16T04:43:56.76
IV.FDMO.HHN. ML:0.5 0.000020549999999999998 0.42 AML other m 2020-08-16T04:43:56.76
IV.MF5.EHE. ML:0.3 0.000021368024999999998 0.5984 AML other m 2020-08-16T04:43:54.56
IV.MF5.EHN. ML:0.5 0.00003203809000000001 0.1184 AML other m 2020-08-16T04:43:54.94
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