Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 30-08-2020 and time 07:14:39 (Italy) in region 7 km E Castelsantangelo sul Nera (MC)

A magnitude ML 0.9 earthquake occured in region: 7 km E Castelsantangelo sul Nera (MC), on

  • 30-08-2020 05:14:39 (UTC)
  • 30-08-2020 07:14:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.87, 13.23 at 10 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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
Montemonaco AP 9 604 885
Montegallo AP 9 523 1408
Ussita MC 11 444 1852
Montefortino FM 12 1178 3030
Arquata del Tronto AP 12 1178 4208
Visso MC 13 1107 5315
Bolognola MC 14 142 5457
Norcia PG 14 4957 10414
Preci PG 15 724 11138
Amandola FM 16 3629 14767
Comunanza AP 18 3166 17933
Acquacanina MC 18 121 18054
Acquasanta Terme AP 19 2916 20970
Sarnano MC 19 3264 24234
Fiastra MC 19 559 24793
Palmiano AP 19 196 24989
Accumoli RI 20 667 25656

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km E of Foligno (57155 inhabitants)
46 Km NW of Teramo (54892 inhabitants)
59 Km NE of Terni (111501 inhabitants)
60 Km N of L'Aquila (69753 inhabitants)
73 Km E of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
86 Km S of Ancona (100861 inhabitants)
93 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 0.9 2020-08-30
05:14:39		 42.87 13.23 10 2020-11-19
12:37:07		 Bollettino Sismico Italiano INGV 84739041
Reviewed
Rev100 		ML 1.4 2020-08-30
05:14:39		 42.88 13.25 10 2020-08-30
05:27:19		 Sala Sismica INGV-Roma 82456951
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-30 05:14:39 ± 0.04
Latitude 42.87 ± 0.00
Longitude 13.23 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84739041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 287
Semi-minor axis of confidence ellipse (meter) 208
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 58
Circular confidence region, given by single value of horizontal uncertainty (meter) 290
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 74
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.44966
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.6
Num. used stations 10
Type of magnitude ML
Reference to an origin 82456951
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-30 05:27:19

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 84739041
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-11-15 02:14:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PZUN.HHZ. 2020-08-30T05:16:03.77 3.0 undecidable manual Sn 4.3 0
IV.CRJA.HHZ. 2020-08-30T05:16:02.50 3.0 negative manual Pg 12.84 0
MN.KEK.HHZ. 2020-08-30T05:16:00.30 3.0 undecidable manual Pn 3.95 0
IV.SOLUN.HHZ. 2020-08-30T05:16:00.00 3.0 positive manual Pg 14.27 0
XK.ALB1.HHZ. 2020-08-30T05:15:41.71 3.0 undecidable manual Pn -0.25 0
GU.GRAM.HHZ. 2020-08-30T05:15:38.24 3.0 undecidable manual Sg 2.69 0
IV.FREG.EHZ. 2020-08-30T05:15:34.29 3.0 undecidable manual Sg -2.86 0
IV.PZUN.HHZ. 2020-08-30T05:15:29.75 3.0 negative manual Pg 11 0
GU.GORR.HHZ. 2020-08-30T05:15:19.21 3.0 negative manual Pg 6.41 0
IV.RMP.HHZ. 2020-08-30T05:15:17.95 3.0 undecidable manual Sn -1.49 0
SI.ROSI.HHZ. 2020-08-30T05:15:13.03 3.0 undecidable manual Pn -7.55 0
IV.ASSB.HHE. 2020-08-30T05:14:55.89 0.3 undecidable manual S 292 0.4497 50 0.18 69
IV.LNSS.HHE. 2020-08-30T05:14:51.42 0.3 undecidable manual S 207 0.3022 50 0.07 72
IV.ASSB.HHE. 2020-08-30T05:14:48.79 0.3 undecidable manual P 292 0.4497 50 -0.14 69
IV.CSP1.EHZ. 2020-08-30T05:14:48.65 0.3 undecidable manual S 356 0.2203 112 -0.15 73
IV.FDMO.HHZ. 2020-08-30T05:14:47.79 0.3 undecidable manual S 328 0.1934 115 -0.07 74
IV.MTRA.EHE. 2020-08-30T05:14:46.97 0.6 undecidable manual S 133 0.1691 118 -0.05 50
IV.LNSS.HHE. 2020-08-30T05:14:46.25 0.3 undecidable manual P 207 0.3022 50 -0.16 71
IV.CSP1.EHZ. 2020-08-30T05:14:45.00 0.3 undecidable manual P 356 0.2203 112 0.06 74
IV.MGAB.HHZ. 2020-08-30T05:14:45.22 3.0 undecidable manual P 0
IV.FDMO.HHZ. 2020-08-30T05:14:44.31 0.1 undecidable manual P 328 0.1934 115 -0.08 99
IV.MMO1.EHN. 2020-08-30T05:14:44.19 0.6 undecidable manual S 70 0.0773 139 -0.01 51
IV.NRCA.HHZ. 2020-08-30T05:14:44.42 0.3 undecidable manual S 245 0.0917 134 -0.15 74
IV.MC2.EHZ. 2020-08-30T05:14:43.61 0.3 undecidable manual S 324 0.0486 151 0.06 76
IV.MTRA.EHE. 2020-08-30T05:14:43.84 0.1 undecidable manual P 133 0.1691 118 -0.07 99
IV.MC2.EHZ. 2020-08-30T05:14:42.13 0.3 undecidable manual P 324 0.0486 151 0.23 74
IV.MMO1.EHN. 2020-08-30T05:14:42.41 0.1 undecidable manual P 70 0.0773 139 0.13 100
IV.NRCA.HHZ. 2020-08-30T05:14:42.60 0.1 undecidable manual P 245 0.0917 134 0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.1 0.00017 0.14 AML other m 2020-08-30T05:14:44.47
IV.NRCA.HHE. ML:1 0.000123 0.42 AML other m 2020-08-30T05:14:44.69
IV.FDMO.HHN. ML:0.8 4.045E-5 1.58 AML other m 2020-08-30T05:14:47.95
IV.FDMO.HHE. ML:0.8 4.475E-5 0.58 AML other m 2020-08-30T05:14:48.00
IV.SNTG.HHN. ML:0 7.65E-5 0.82 AML other m 2020-08-30T05:14:56.37
IV.SNTG.HHE. ML:0 5.385E-5 0.42 AML other m 2020-08-30T05:15:06.70
IV.CPGN.EHN. ML:0 0.000231 0.44 AML other m 2020-08-30T05:15:14.44
IV.CPGN.EHE. ML:0 0.0002745 1.56 AML other m 2020-08-30T05:15:18.82
GU.GRAM.HHE. ML:2.8 6.985E-5 0.48 AML other m 2020-08-30T05:15:30.55
GU.GRAM.HHN. ML:2.9 9.12E-5 0.06 AML other m 2020-08-30T05:16:00.71
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