Earthquake with magnitude of ML 1.3 on date 19-08-2021 and time 03:56:22 (Italy) in region 8 km SE Castelsantangelo sul Nera (MC)

A magnitude ML 1.3 earthquake occured in region: 8 km SE Castelsantangelo sul Nera (MC), on

  • 19-08-2021 01:56:22 (UTC)
  • 19-08-2021 03:56:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8330, 13.1940 at 14 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.

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 8 281 281
Norcia PG 9 4957 5238
Arquata del Tronto AP 11 1178 6416
Montegallo AP 12 523 6939
Ussita MC 13 444 7383
Montemonaco AP 13 604 7987
Preci PG 14 724 8711
Visso MC 14 1107 9818
Accumoli RI 16 667 10485
Montefortino FM 17 1178 11663
Bolognola MC 18 142 11805
Acquasanta Terme AP 19 2916 14721
Cascia PG 19 3217 17938

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km E of Foligno (57155 inhabitants)
46 Km W of Teramo (54892 inhabitants)
54 Km NE of Terni (111501 inhabitants)
56 Km NW of L'Aquila (69753 inhabitants)
72 Km E of Perugia (166134 inhabitants)
86 Km W of Montesilvano (53738 inhabitants)
91 Km SW of Ancona (100861 inhabitants)
93 Km W of Pescara (121014 inhabitants)
96 Km NW of Chieti (51815 inhabitants)
100 Km NE of Guidonia Montecelio (88673 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
Reviewed
Rev100
ML 1.3 2021-08-19
01:56:22
42.8328 13.1938 14 2021-08-19
02:09:03
Sala Sismica INGV-Roma 94353131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-19 01:56:22 ± 0.11
Latitude 42.8328 ± 0.0036
Longitude 13.1938 ± 0.0061
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 94353131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 470
Semi-minor axis of confidence ellipse (meter) 74
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 246
Circular confidence region, given by single value of horizontal uncertainty (meter) 470.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 118
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.36692
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.4
Num. used stations 7
Type of magnitude ML
Reference to an origin 94353131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-19 02:09:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2021-08-19T01:56:39.63 3.0 undecidable manual S 0.07 0
IV.TERO.HHZ. 2021-08-19T01:56:36.01 0.3 undecidable manual S 125 40.7259 97 -0.29 67
IV.CSP1.EHZ. 2021-08-19T01:56:33.01 0.3 undecidable manual S 2 28.749 102 -0.13 70
IV.MF5.EHZ. 2021-08-19T01:56:33.27 0.1 undecidable manual S 51 27.6501 102 0.43 88
IV.SMA1.EHZ. 2021-08-19T01:56:32.21 0.3 undecidable manual S 153 25.2525 104 -0.02 72
IV.MNTT.EHZ. 2021-08-19T01:56:31.43 3.0 negative manual P 0.39 0
IV.FDMO.HHZ. 2021-08-19T01:56:31.82 0.1 undecidable manual S 339 24.1536 105 -0.14 93
IV.TERO.HHZ. 2021-08-19T01:56:30.66 0.1 undecidable manual P 125 40.7259 97 0.01 94
IV.MC2.EHZ. 2021-08-19T01:56:28.47 0.1 undecidable manual S 357 8.6802 141 0.04 100
IV.SMA1.EHZ. 2021-08-19T01:56:28.54 0.3 undecidable manual P 153 25.2525 104 0.25 70
IV.MMO1.EHZ. 2021-08-19T01:56:28.79 0.3 undecidable manual S 56 13.0758 127 -0.48 68
IV.CSP1.EHZ. 2021-08-19T01:56:28.74 0.1 undecidable manual P 2 28.749 102 -0.08 94
IV.MF5.EHZ. 2021-08-19T01:56:28.96 1.0 negative manual P 51 27.6501 102 0.31 23
IV.NRCA.HHZ. 2021-08-19T01:56:28.15 0.1 undecidable manual S 271 6.4935 150 0.05 100
IV.FDMO.HHZ. 2021-08-19T01:56:28.08 0.1 undecidable manual P 339 24.1536 105 -0.06 95
IV.NRCA.HHZ. 2021-08-19T01:56:26.15 0.1 positive manual P 271 6.4935 150 0.24 97
IV.MC2.EHZ. 2021-08-19T01:56:26.27 1.0 undecidable manual P 357 8.6802 141 0.17 24
IV.MMO1.EHZ. 2021-08-19T01:56:26.47 0.1 undecidable manual P 56 13.0758 127 -0.12 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.5 0.00034472189999999996 0.0608 AML other m 2021-08-19T01:56:28.44
IV.NRCA.HHN. ML:1.5 0.0003768337 0.1008 AML other m 2021-08-19T01:56:28.65
IV.NRCA.HNE. ML:1.6 0.00039520800000000003 0.1504 AML other m 2021-08-19T01:56:28.29
IV.NRCA.HNN. ML:1.5 0.00033477085 0.1104 AML other m 2021-08-19T01:56:28.70
IV.FDMO.HHE. ML:0.4 0.0000128036235 0.2592 AML other m 2021-08-19T01:56:33.13
IV.FDMO.HHN. ML:0.4 0.0000128152435 0.1008 AML other m 2021-08-19T01:56:32.50
IV.CSP1.EHN. ML:1.0 0.000045157622 0.4192 AML other m 2021-08-19T01:56:34.21
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download