Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 12-08-2020 and time 03:30:33 (Italy) in region 2 km S Bolognano (PE)

A magnitude ML 0.9 earthquake occured in region: 2 km S Bolognano (PE), on

  • 12-08-2020 01:30:33 (UTC)
  • 12-08-2020 03:30:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.2, 13.96 at 16 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
Bolognano PE 2 1108 1108
Salle PE 3 308 1416
Tocco da Casauria PE 4 2688 4104
San Valentino in Abruzzo Citeriore PE 4 1922 6026
Abbateggio PE 5 400 6426
Torre de' Passeri PE 6 3147 9573
Roccamorice PE 6 939 10512
Caramanico Terme PE 6 1929 12441
Castiglione a Casauria PE 7 831 13272
Lettomanoppello PE 8 2975 16247
Scafa PE 8 3759 20006
Pescosansonesco PE 8 517 20523
Turrivalignani PE 9 857 21380
Pietranico PE 9 484 21864
Corvara PE 10 256 22120
Sant'Eufemia a Maiella PE 10 278 22398
Roccacasale AQ 10 693 23091
Alanno PE 11 3487 26578
Popoli PE 11 5172 31750
Manoppello PE 11 6996 38746
Bussi sul Tirino PE 11 2518 41264
Cugnoli PE 12 1506 42770
Serramonacesca PE 12 562 43332
Corfinio AQ 13 1051 44383
Pratola Peligna AQ 14 7577 51960
Vittorito AQ 14 873 52833
Roccamontepiano CH 15 1707 54540
Collepietro AQ 15 237 54777
Civitaquana PE 15 1247 56024
Nocciano PE 15 1810 57834
Brittoli PE 15 290 58124
Rosciano PE 15 3900 62024
Pretoro CH 15 934 62958
San Benedetto in Perillis AQ 16 113 63071
Catignano PE 16 1399 64470
Vicoli PE 16 390 64860
Raiano AQ 16 2815 67675
Carpineto della Nora PE 17 662 68337
Pacentro AQ 17 1174 69511
Sulmona AQ 17 24557 94068
Casalincontrada CH 17 3074 97142
Capestrano AQ 17 884 98026
Prezza AQ 19 945 98971
Rapino CH 19 1318 100289
Navelli AQ 19 554 100843
Civitella Casanova PE 19 1815 102658
Molina Aterno AQ 19 386 103044
Fara Filiorum Petri CH 20 1943 104987
Acciano AQ 20 327 105314

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km SW of Chieti (51815 inhabitants)
36 Km SW of Pescara (121014 inhabitants)
38 Km SW of Montesilvano (53738 inhabitants)
49 Km E of L'Aquila (69753 inhabitants)
55 Km SE of Teramo (54892 inhabitants)
99 Km E of Tivoli (56533 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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 0.9 2020-08-12
01:30:33		 42.2 13.96 16 2020-08-12
01:36:36		 Sala Sismica INGV-Roma 81892591
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-12 01:30:33 ± 0.16
Latitude 42.20 ± 0.00
Longitude 13.96 ± 0.01
Depth (km) 16 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81892591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 754
Semi-minor axis of confidence ellipse (meter) 288
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 53
Circular confidence region, given by single value of horizontal uncertainty (meter) 750
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 157
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.19425
Epicentral distance of station farthest from the epicenter (degree) 0.28419
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 81892591
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-12 01:36:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FAGN.HHZ. 2020-08-12T01:30:44.00 0.3 undecidable manual S 283 0.2842 103 -0.09 73
IV.VCEL.EHZ. 2020-08-12T01:30:42.14 0.6 undecidable manual S 336 0.2113 110 0.12 51
IV.LPEL.HHZ. 2020-08-12T01:30:42.51 0.6 undecidable manual S 133 0.2275 108 0.03 50
IV.INTR.HHZ. 2020-08-12T01:30:41.42 0.6 undecidable manual S 192 0.1943 113 -0.13 50
IV.FAGN.HHZ. 2020-08-12T01:30:39.46 0.3 undecidable manual P 283 0.2842 103 0.02 75
IV.LPEL.HHZ. 2020-08-12T01:30:38.43 0.3 undecidable manual P 133 0.2275 108 -0.08 75
IV.INTR.HHZ. 2020-08-12T01:30:38.12 0.1 undecidable manual P 192 0.1943 113 0.15 100
IV.VCEL.EHZ. 2020-08-12T01:30:38.18 0.1 undecidable manual P 336 0.2113 110 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.INTR.HHE. ML:0.8 3.395E-5 1.66 AML other m 2020-08-12T01:30:41.02
IV.INTR.HHN. ML:0.7 3.07E-5 1.16 AML other m 2020-08-12T01:30:42.36
IV.LPEL.HHN. ML:0.9 3.945E-5 0.2 AML other m 2020-08-12T01:30:43.12
IV.VCEL.EHE. ML:1 5.61E-5 0.44 AML other m 2020-08-12T01:30:43.33
IV.VCEL.EHN. ML:0.9 4.61E-5 1.58 AML other m 2020-08-12T01:30:44.17
IV.LPEL.HHE. ML:0.9 4.14E-5 0.18 AML other m 2020-08-12T01:30:45.09
IV.FAGN.HHN. ML:1 4.305E-5 0.48 AML other m 2020-08-12T01:30:45.47
IV.FAGN.HHE. ML:1.2 6.03E-5 0.3 AML other m 2020-08-12T01:30:45.78
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download