Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 12-08-2020 and time 07:21:01 (UTC) in region 1 km SE Acqualagna (PU)

A magnitude ML 0.5 earthquake occured in region: 1 km SE Acqualagna (PU), on

  • 12-08-2020 07:21:01 (UTC)
  • 12-08-2020 09:21:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.6070, 12.6790 at 18 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
Acqualagna PU 1 4393 4393
Cagli PU 7 8731 13124
Fermignano PU 8 8596 21720
Frontone PU 11 1300 23020
Pergola PU 14 6333 29353
Urbino PU 14 15019 44372
Piobbico PU 14 2029 46401
Fossombrone PU 14 9575 55976
Urbania PU 14 7099 63075
Serra Sant'Abbondio PU 15 1027 64102
Cantiano PU 15 2245 66347
Isola del Piano PU 17 594 66941
Peglio PU 18 696 67637
Sant'Ippolito PU 18 1563 69200
Fratte Rosa PU 18 966 70166
Montefelcino PU 19 2671 72837
Petriano PU 20 2829 75666

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km SW of Fano (60888 inhabitants)
39 Km SW of Pesaro (94582 inhabitants)
51 Km S of Rimini (147750 inhabitants)
60 Km NE of Perugia (166134 inhabitants)
66 Km E of Arezzo (99543 inhabitants)
68 Km W of Ancona (100861 inhabitants)
69 Km SE of Cesena (96758 inhabitants)
72 Km N of Foligno (57155 inhabitants)
86 Km SE of Forlì (117913 inhabitants)
98 Km SE of Ravenna (159116 inhabitants)
99 Km SE of Faenza (58541 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 0.5 2020-08-12
07:21:01		 43.6073 12.6792 18 2021-02-26
15:54:52		 Bollettino Sismico Italiano INGV 87510401
Reviewed
Rev100 		ML 0.5 2020-08-12
07:21:02		 43.6048 12.6938 16 2020-08-12
07:33:04		 Sala Sismica INGV-Roma 81900451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-12 07:21:01 ± 0.14
Latitude 43.6073 ± 0.0063
Longitude 12.6792 ± 0.0062
Depth (km) 18 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87510401

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 585
Semi-minor axis of confidence ellipse (meter) 514
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 11
Circular confidence region, given by single value of horizontal uncertainty (meter) 590.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 156
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.21943
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 87510401
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-26 15:11:38

ML:0.5

Field Value
Value 0.5
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 81900451
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-12 07:33:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SENA.HHZ. 2020-08-12T07:22:52.83 3.0 undecidable manual Sn -3.12 0
CR.ZAG.BHZ. 2020-08-12T07:22:45.44 3.0 undecidable manual Sg 15 0
IV.MILN.HHZ. 2020-08-12T07:22:43.94 3.0 undecidable manual Sg 11.54 0
IV.CMPR.HHZ. 2020-08-12T07:22:42.43 3.0 undecidable manual Sn -6.24 0
IV.ILOS.HHZ. 2020-08-12T07:22:27.29 3.0 negative manual Pn 2.95 0
IV.SERS.HHZ. 2020-08-12T07:22:25.13 3.0 undecidable manual Pn 0.83 0
IV.EUCT.HNZ. 2020-08-12T07:22:24.90 3.0 undecidable manual Sn -5.47 0
RD.PGF.BHZ. 2020-08-12T07:22:20.86 3.0 undecidable manual Sn -9.08 0
IV.RNI2.HHZ. 2020-08-12T07:22:12.68 3.0 undecidable manual Sg 3.78 0
IV.CELB.HHZ. 2020-08-12T07:22:10.37 3.0 undecidable manual Sg 2.29 0
CH.FUSIO.HHZ. 2020-08-12T07:22:10.88 3.0 undecidable manual Pn 5.77 0
IV.ROSPO.HHZ. 2020-08-12T07:22:06.01 3.0 undecidable manual Sn -0.4 0
IV.CMPR.HHZ. 2020-08-12T07:22:06.10 3.0 undecidable manual Pg 4.32 0
IV.AGLI.HHZ. 2020-08-12T07:22:05.24 3.0 undecidable manual Pg 4.46 0
RD.PGF.BHZ. 2020-08-12T07:21:56.22 3.0 undecidable manual Pg 4.96 0
GU.GSCL.HHZ. 2020-08-12T07:21:55.16 3.0 undecidable manual Sn -3.47 0
GU.GORR.HHZ. 2020-08-12T07:21:50.02 3.0 undecidable manual Pg 3.17 0
OX.CIMO.HHZ. 2020-08-12T07:21:49.27 3.0 positive manual Pg 3.77 0
IV.ZCCA.HHZ. 2020-08-12T07:21:46.89 3.0 undecidable manual Sn -5.47 0
IV.VAGA.HHZ. 2020-08-12T07:21:42.56 3.0 negative manual Pn -0.83 0
IV.CTI.HHZ. 2020-08-12T07:21:41.77 3.0 undecidable manual Pn -2.01 0
IV.BRSN.EHZ. 2020-08-12T07:21:17.20 3.0 negative manual P -1.97 0
IV.ARVD.HHN. 2020-08-12T07:21:11.21 0.6 undecidable manual S 120 24.3534 117 0.02 49
IV.SSFR.HNZ. 2020-08-12T07:21:10.34 0.6 undecidable manual S 156 20.6682 122 -0.01 49
IV.FRON.EHE. 2020-08-12T07:21:08.36 0.6 undecidable manual S 159 10.5783 144 0 50
IV.PIEI.HHZ. 2020-08-12T07:21:08.89 0.6 undecidable manual S 236 14.0748 135 -0.07 49
IV.NARO.HHZ. 2020-08-12T07:21:07.89 0.6 undecidable manual S 273 7.881 152 -0.09 49
IV.MPAG.EHZ. 2020-08-12T07:21:07.91 0.6 undecidable manual S 69 6.8931 155 0.05 50
IV.ARVD.HHN. 2020-08-12T07:21:06.83 0.3 undecidable manual P 120 24.3534 117 -0.38 68
IV.SSFR.HNZ. 2020-08-12T07:21:06.88 0.1 undecidable manual P 156 20.6682 122 0.16 95
IV.FRON.EHE. 2020-08-12T07:21:05.52 0.1 undecidable manual P 159 10.5783 144 -0.06 99
IV.PIEI.HHZ. 2020-08-12T07:21:05.99 0.3 undecidable manual P 236 14.0748 135 0.07 74
IV.NARO.HHZ. 2020-08-12T07:21:05.40 0.1 undecidable manual P 273 7.881 152 0.04 100
IV.MPAG.EHZ. 2020-08-12T07:21:05.45 0.3 undecidable manual P 69 6.8931 155 0.16 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MPAG.EHE. ML:0.9 0.0000668 1.7 AML other m 2020-08-12T07:21:07.12
IV.NARO.HHE. ML:0.6 0.00003375 0.06 AML other m 2020-08-12T07:21:08.09
IV.MPAG.EHN. ML:0.6 0.0000334 0.16 AML other m 2020-08-12T07:21:08.41
IV.NARO.HHN. ML:0.5 0.000026099999999999997 0.52 AML other m 2020-08-12T07:21:08.32
IV.PIEI.HHE. ML:0.4 0.0000203 0.8 AML other m 2020-08-12T07:21:09.54
IV.PIEI.HHN. ML:0.1 0.0000121 0.9 AML other m 2020-08-12T07:21:10.28
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