Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 29-07-2020 and time 21:40:59 (UTC) in region 7 km SE Castelsantangelo sul Nera (MC)

A magnitude ML 0.8 earthquake occured in region: 7 km SE Castelsantangelo sul Nera (MC), on

  • 29-07-2020 21:40:59 (UTC)
  • 29-07-2020 23:40:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8530, 13.2210 at 6 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
Castelsantangelo sul Nera MC 7 281 281
Montegallo AP 9 523 804
Montemonaco AP 10 604 1408
Arquata del Tronto AP 11 1178 2586
Ussita MC 12 444 3030
Norcia PG 12 4957 7987
Visso MC 14 1107 9094
Montefortino FM 14 1178 10272
Preci PG 15 724 10996
Bolognola MC 16 142 11138
Accumoli RI 18 667 11805
Acquasanta Terme AP 18 2916 14721
Amandola FM 18 3629 18350
Comunanza AP 20 3166 21516

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km E of Foligno (57155 inhabitants)
45 Km W of Teramo (54892 inhabitants)
57 Km NE of Terni (111501 inhabitants)
58 Km N of L'Aquila (69753 inhabitants)
73 Km E of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
88 Km S of Ancona (100861 inhabitants)
92 Km W of Pescara (121014 inhabitants)
96 Km NW of Chieti (51815 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 0.8 2020-07-29
21:40:59		 42.8532 13.2207 6 2020-11-19
12:37:06		 Bollettino Sismico Italiano INGV 84191821
Reviewed
Rev100 		ML 0.8 2020-07-29
21:40:59		 42.85 13.2247 5 2020-07-29
22:13:38		 Sala Sismica INGV-Roma 81467111
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-29 21:40:59 ± 0.16
Latitude 42.8532 ± 0.0036
Longitude 13.2207 ± 0.0061
Depth (km) 6 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84191821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 529
Semi-minor axis of confidence ellipse (meter) 132
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 89
Circular confidence region, given by single value of horizontal uncertainty (meter) 530.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.23922
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 84191821
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-28 00:53:04

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 81467111
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-29 22:13:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MSRU.HHZ. 2020-07-29T21:42:43.75 3.0 undecidable manual Sn -9.04 0
MN.TRI.HHZ. 2020-07-29T21:42:28.21 3.0 undecidable manual Sg 7.65 0
IV.CROCE.HHZ. 2020-07-29T21:42:25.37 3.0 undecidable manual Pg 9.06 0
IV.HPAC.HHZ. 2020-07-29T21:42:23.76 3.0 positive manual Pn 5.08 0
CR.STON.BHZ. 2020-07-29T21:42:20.48 3.0 undecidable manual Sg 6.6 0
IV.MPNC.HHZ. 2020-07-29T21:42:11.41 3.0 negative manual Pg 11.35 0
IV.LAV9.HNZ. 2020-07-29T21:41:35.94 3.0 undecidable manual S 3.03 0
IV.CSNT.HHZ. 2020-07-29T21:41:22.04 3.0 positive manual Pn -3.87 0
IV.CPGN.EHZ. 2020-07-29T21:41:16.85 3.0 undecidable manual Pn -3.45 0
IV.SMA1.EHZ. 2020-07-29T21:41:08.97 0.6 undecidable manual S 159 26.3514 103 0.06 48
IV.CSP1.EHZ. 2020-07-29T21:41:08.90 0.6 undecidable manual S 357 26.5512 103 -0.05 48
IV.GUMA.HHE. 2020-07-29T21:41:08.87 0.6 undecidable manual S 22 25.0527 104 0.41 45
IV.MF5.EHZ. 2020-07-29T21:41:08.94 0.3 undecidable manual S 52 24.5532 104 0.66 62
IV.FDMO.HHZ. 2020-07-29T21:41:07.72 0.6 undecidable manual S 332 23.0547 105 -0.06 48
IV.SMA1.EHZ. 2020-07-29T21:41:04.59 0.3 undecidable manual P 159 26.3514 103 -0.35 68
IV.CSP1.EHZ. 2020-07-29T21:41:04.90 0.3 undecidable manual P 357 26.5512 103 -0.07 72
IV.GUMA.HHE. 2020-07-29T21:41:04.65 0.1 undecidable manual P 22 25.0527 104 -0.03 97
IV.MF5.EHZ. 2020-07-29T21:41:04.93 0.3 undecidable manual P 52 24.5532 104 0.36 68
IV.T1299.HNN. 2020-07-29T21:41:04.72 0.3 undecidable manual P 168 24.753 104 0.09 72
IV.FDMO.HHZ. 2020-07-29T21:41:03.82 0.3 undecidable manual P 332 23.0547 105 -0.47 67
IV.MMO1.EHZ. 2020-07-29T21:41:03.25 0.1 undecidable manual S 59 10.0788 121 -0.33 94
IV.ROSPO.HHZ. 2020-07-29T21:41:03.70 3.0 undecidable manual P -4.84 0
IV.NRCA.HHZ. 2020-07-29T21:41:03.80 0.6 undecidable manual S 256 8.88 124 0.55 44
IV.MTRA.EHZ. 2020-07-29T21:41:03.33 0.3 undecidable manual P 127 17.871 109 0.03 74
IV.MC2.EHZ. 2020-07-29T21:41:02.66 0.6 undecidable manual S 338 6.993 131 -0.06 50
IV.FIAM.HHZ. 2020-07-29T21:41:02.43 3.0 positive manual P -0.58 0
IV.NRCA.HHZ. 2020-07-29T21:41:01.80 0.1 undecidable manual P 256 8.88 124 0.12 98
IV.MC2.EHZ. 2020-07-29T21:41:01.32 0.1 undecidable manual P 338 6.993 131 -0.04 100
IV.MMO1.EHZ. 2020-07-29T21:41:01.63 0.1 undecidable manual P 59 10.0788 121 -0.23 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.3 0.00035250000000000006 1.6 AML other m 2020-07-29T21:41:03.15
IV.NRCA.HHN. ML:1.2 0.000291 0.68 AML other m 2020-07-29T21:41:04.24
IV.MTRA.EHN. ML:0.9 0.0000656 1.6 AML other m 2020-07-29T21:41:06.16
IV.MTRA.EHE. ML:0.9 0.0000654 1.66 AML other m 2020-07-29T21:41:09.01
IV.FDMO.HHN. ML:0.6 0.0000234 0.84 AML other m 2020-07-29T21:41:09.02
IV.FDMO.HHE. ML:0.5 0.00002135 1.22 AML other m 2020-07-29T21:41:10.01
IV.SMA1.EHN. ML:0.6 0.000026750000000000003 1.28 AML other m 2020-07-29T21:41:15.73
IV.SMA1.EHE. ML:0.7 0.000028450000000000004 0.68 AML other m 2020-07-29T21:41:19.12
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