Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 05-04-2021 and time 10:19:42 (Italy) in region 7 km SE Castelsantangelo sul Nera (MC)

A magnitude ML 0.7 earthquake occured in region: 7 km SE Castelsantangelo sul Nera (MC), on

  • 05-04-2021 08:19:42 (UTC)
  • 05-04-2021 10:19:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8550, 13.2150 at 8 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
Montegallo AP 10 523 804
Montemonaco AP 11 604 1408
Arquata del Tronto AP 11 1178 2586
Ussita MC 12 444 3030
Norcia PG 12 4957 7987
Visso MC 13 1107 9094
Montefortino FM 14 1178 10272
Preci PG 15 724 10996
Bolognola MC 16 142 11138
Accumoli RI 18 667 11805
Amandola FM 18 3629 15434
Acquasanta Terme AP 19 2916 18350
Acquacanina MC 20 121 18471

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km E of Foligno (57155 inhabitants)
46 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)
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 0.7 2021-04-05
08:19:42		 42.8547 13.2148 8 2021-07-12
16:55:11		 Bollettino Sismico Italiano INGV 90093391
Reviewed
Rev100 		ML 0.7 2021-04-05
08:19:42		 42.8592 13.2292 9 2021-04-05
08:26:42		 Sala Sismica INGV-Roma 88789021
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-05 08:19:42 ± 0.07
Latitude 42.8547 ± 0.0027
Longitude 13.2148 ± 0.0049
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90093391

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 383
Semi-minor axis of confidence ellipse (meter) 195
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 257
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 65
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.06025
Epicentral distance of station farthest from the epicenter (degree) 0.34534
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 7
Type of magnitude ML
Reference to an origin 90093391
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-14 14:33:13

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 7
Type of magnitude ML
Reference to an origin 88789021
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-05 08:26:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RM33.EHE. 2021-04-05T08:19:56.08 0.6 undecidable manual S 180 38.3283 50 0.14 46
IV.LNSS.HHN. 2021-04-05T08:19:54.29 0.6 undecidable manual S 207 31.3464 105 0.38 44
IV.MML1.EHE. 2021-04-05T08:19:54.96 0.6 undecidable manual S 326 34.8429 50 -0.05 47
IV.PF6.EHE. 2021-04-05T08:19:53.98 0.6 undecidable manual S 357 31.4463 105 0.03 48
IV.CESI.HHZ. 2021-04-05T08:19:53.68 0.3 undecidable manual S 304 30.2475 106 0.15 70
IV.MF5.EHZ. 2021-04-05T08:19:52.72 0.6 undecidable manual S 53 24.753 109 0.99 36
IV.SMA1.EHZ. 2021-04-05T08:19:52.06 0.3 undecidable manual S 158 26.751 107 -0.31 68
IV.CSP1.EHZ. 2021-04-05T08:19:52.21 0.3 undecidable manual S 358 26.3514 108 -0.03 72
IV.FDMO.HHZ. 2021-04-05T08:19:50.98 0.6 undecidable manual S 333 22.6551 110 -0.06 48
IV.RM33.EHE. 2021-04-05T08:19:50.40 0.3 undecidable manual P 180 38.3283 50 0.08 70
IV.MML1.EHE. 2021-04-05T08:19:49.50 0.3 undecidable manual P 326 34.8429 50 -0.28 68
IV.PF6.EHE. 2021-04-05T08:19:49.19 0.3 undecidable manual P 357 31.4463 105 0.01 72
IV.LNSS.HHN. 2021-04-05T08:19:49.11 0.6 undecidable manual P 207 31.3464 105 -0.04 48
IV.MTRA.EHZ. 2021-04-05T08:19:49.79 0.6 undecidable manual S 126 18.3705 115 0.14 48
IV.CSP1.EHZ. 2021-04-05T08:19:48.04 0.1 undecidable manual P 358 26.3514 108 -0.15 94
IV.CESI.HHZ. 2021-04-05T08:19:48.86 0.3 undecidable manual P 304 30.2475 106 -0.07 71
IV.MF5.EHZ. 2021-04-05T08:19:48.45 0.3 undecidable manual P 53 24.753 109 0.56 64
IV.SMA1.EHZ. 2021-04-05T08:19:47.95 0.3 undecidable manual P 158 26.751 107 -0.31 68
IV.FDMO.HHZ. 2021-04-05T08:19:47.43 0.1 undecidable manual P 333 22.6551 110 -0.07 96
IV.MTRA.EHZ. 2021-04-05T08:19:46.75 0.6 undecidable manual P 126 18.3705 115 0.06 49
IV.MC2.EHZ. 2021-04-05T08:19:46.31 0.6 undecidable manual S 342 6.6933 142 -0.05 50
IV.NRCA.HHZ. 2021-04-05T08:19:46.90 0.6 undecidable manual S 254 8.4804 135 0.11 49
IV.MMO1.EHZ. 2021-04-05T08:19:46.74 0.6 undecidable manual S 61 10.3785 129 -0.54 44
IV.MMO1.EHZ. 2021-04-05T08:19:45.12 0.1 undecidable manual P 61 10.3785 129 -0.2 96
IV.NRCA.HHZ. 2021-04-05T08:19:45.20 0.1 undecidable manual P 254 8.4804 135 0.16 97
IV.MC2.EHZ. 2021-04-05T08:19:44.77 0.1 undecidable manual P 342 6.6933 142 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.6 0.00002342465 0.16 AML other m 2021-04-05T08:19:53.18
IV.FDMO.HHN. ML:0.6 0.000023685110000000002 0.1408 AML other m 2021-04-05T08:19:53.32
IV.SMA1.EHE. ML:0.7 0.000029367644999999996 0.896 AML other m 2021-04-05T08:19:54.89
IV.CSP1.EHN. ML:1.0 0.00005723743 0.4416 AML other m 2021-04-05T08:19:54.38
IV.CESI.HHN. ML:0.8 0.00002956377 0.2432 AML other m 2021-04-05T08:19:55.11
IV.CSP1.EHE. ML:0.9 0.00004253743 0.2048 AML other m 2021-04-05T08:19:55.53
IV.CESI.HHE. ML:0.5 0.0000169754415 0.1792 AML other m 2021-04-05T08:19:55.81
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