ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of ML 1.4 on date 20-03-2019 and time 22:50:38 (Italy) in region 6 km SE Castelsantangelo sul Nera (MC)

A magnitude ML 1.4 earthquake occured in region: 6 km SE Castelsantangelo sul Nera (MC), on

  • 20-03-2019 21:50:38 (UTC)
  • 20-03-2019 22:50:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.86, 13.2 at 10 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 6 281 281
Norcia PG 11 4957 5238
Montegallo AP 11 523 5761
Ussita MC 11 444 6205
Montemonaco AP 12 604 6809
Arquata del Tronto AP 12 1178 7987
Visso MC 12 1107 9094
Preci PG 13 724 9818
Montefortino FM 15 1178 10996
Bolognola MC 16 142 11138
Accumoli RI 18 667 11805
Amandola FM 19 3629 15434
Acquacanina MC 20 121 15555
Acquasanta Terme AP 20 2916 18471

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km E of Foligno (57155 inhabitants)
47 Km W of Teramo (54892 inhabitants)
56 Km NE of Terni (111501 inhabitants)
58 Km N of L'Aquila (69753 inhabitants)
72 Km E of Perugia (166134 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
89 Km SW of Ancona (100861 inhabitants)
94 Km W of Pescara (121014 inhabitants)
97 Km NW of Chieti (51815 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.4 2019-03-20
21:50:38
42.86 13.2 10 2019-03-20
21:58:10
Sala Sismica INGV-Roma 66737501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-03-20 21:50:38 ± 0.05
Latitude 42.86 ± 0.00
Longitude 13.20 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 66737501

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 378
Semi-minor axis of confidence ellipse (meter) 190
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 254
Circular confidence region, given by single value of horizontal uncertainty (meter) 380
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 59
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 36
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) 0.05666
Epicentral distance of station farthest from the epicenter (degree) 0.37772
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 20
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 66737501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-03-20 21:58:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TERO.HHZ. 2019-03-20T21:50:52.57 0.6 undecidable manual S 128 0.3777 50 -0.21 46
IV.RM33.EHZ. 2019-03-20T21:50:52.09 0.6 undecidable manual S 178 0.3462 50 0.24 46
IV.CAMP.HHE. 2019-03-20T21:50:51.88 0.3 undecidable manual S 154 0.3543 50 -0.22 68
IV.LNSS.HHZ. 2019-03-20T21:50:50.01 0.6 undecidable manual S 205 0.2779 50 0.19 47
IV.SAP2.EHE. 2019-03-20T21:50:50.47 0.1 undecidable manual S 31 0.2824 50 0.51 87
IV.MML1.EHE. 2019-03-20T21:50:50.62 0.6 undecidable manual S 327 0.3067 50 -0.06 48
IV.CESI.HHZ. 2019-03-20T21:50:49.22 0.6 undecidable manual S 305 0.2617 50 -0.14 47
IV.MF5.EHZ. 2019-03-20T21:50:48.72 0.6 undecidable manual S 55 0.2329 50 0.23 47
IV.SMA1.EHZ. 2019-03-20T21:50:48.78 0.6 undecidable manual S 156 0.2464 50 -0.1 48
IV.CSP1.EHE. 2019-03-20T21:50:48.14 0.6 undecidable manual S 1 0.2365 50 -0.46 44
IV.GUMA.HHZ. 2019-03-20T21:50:48.57 0.6 undecidable manual S 26 0.2302 50 0.16 47
IV.MNTT.EHZ. 2019-03-20T21:50:47.05 0.1 undecidable manual P 54 0.3561 50 0.49 86
IV.RM33.EHZ. 2019-03-20T21:50:46.45 0.1 undecidable manual P 178 0.3462 50 0.07 94
IV.FDMO.HHZ. 2019-03-20T21:50:46.91 0.6 undecidable manual S 336 0.1988 115 -0.42 45
IV.TERO.HHZ. 2019-03-20T21:50:46.68 0.1 undecidable manual P 128 0.3777 50 -0.24 90
IV.MTRA.EHZ. 2019-03-20T21:50:46.25 0.3 undecidable manual S 124 0.1754 117 -0.27 70
IV.CAMP.HHE. 2019-03-20T21:50:46.15 1.0 undecidable manual P 154 0.3543 50 -0.38 22
IV.MML1.EHE. 2019-03-20T21:50:45.53 0.1 undecidable manual P 327 0.3067 50 -0.18 93
IV.PF6.EHE. 2019-03-20T21:50:45.17 1.0 undecidable manual P 359 0.2824 50 -0.12 24
IV.LNSS.HHZ. 2019-03-20T21:50:45.27 0.1 undecidable manual P 205 0.2779 50 0.06 96
IV.SAP2.EHE. 2019-03-20T21:50:45.52 0.6 undecidable manual P 31 0.2824 50 0.23 46
IV.CESI.HHZ. 2019-03-20T21:50:44.85 0.1 positive manual P 305 0.2617 50 -0.09 95
IV.CSP1.EHE. 2019-03-20T21:50:44.21 0.1 undecidable manual P 1 0.2365 50 -0.3 92
IV.T1299.EHE. 2019-03-20T21:50:44.60 0.1 undecidable manual P 164 0.2293 50 0.22 94
IV.GUMA.HHZ. 2019-03-20T21:50:44.40 0.1 undecidable manual P 26 0.2302 50 0 98
IV.MF5.EHZ. 2019-03-20T21:50:44.42 0.1 undecidable manual P 55 0.2329 50 -0.02 97
IV.SMA1.EHZ. 2019-03-20T21:50:44.65 0.1 undecidable manual P 156 0.2464 50 -0.02 97
IV.FDMO.HHZ. 2019-03-20T21:50:43.55 0.1 undecidable manual P 336 0.1988 115 -0.22 94
IV.NRCA.HNZ. 2019-03-20T21:50:43.49 0.6 undecidable manual S 251 0.0657 144 0.27 48
IV.MTRA.EHZ. 2019-03-20T21:50:43.15 0.1 undecidable manual P 124 0.1754 117 -0.16 96
IV.MMO1.EHZ. 2019-03-20T21:50:43.99 0.6 undecidable manual S 65 0.1034 131 -0.23 48
IV.MC2.EHZ. 2019-03-20T21:50:43.30 0.6 undecidable manual S 353 0.0567 148 0.26 48
IV.FEMA.HNE. 2019-03-20T21:50:42.75 0.1 undecidable manual P 314 0.1529 121 -0.11 97
IV.MC2.EHZ. 2019-03-20T21:50:41.57 0.1 undecidable manual P 353 0.0567 148 0.28 96
IV.NRCA.HNZ. 2019-03-20T21:50:41.74 0.1 negative manual P 251 0.0657 144 0.34 94
IV.MMO1.EHZ. 2019-03-20T21:50:41.97 0.1 undecidable manual P 65 0.1034 131 -0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:2.4 0.0039687265 0.1024 AML other m 2019-03-20T21:50:43.65
IV.NRCA.HHN. ML:2.1 0.0018042535 0.0768 AML other m 2019-03-20T21:50:43.66
IV.NRCA.HNE. ML:2.4 0.003784107 0.0896 AML other m 2019-03-20T21:50:43.66
IV.NRCA.HNN. ML:2 0.001680314 0.0768 AML other m 2019-03-20T21:50:43.56
IV.MTRA.EHE. ML:1.2 0.00013588725 0.2176 AML other m 2019-03-20T21:50:47.37
IV.MTRA.EHN. ML:1.4 0.00018760055 0.2048 AML other m 2019-03-20T21:50:47.01
IV.MTRA.HNE. ML:1.3 0.00016347058 0.2048 AML other m 2019-03-20T21:50:47.37
IV.MTRA.HNN. ML:1.3 0.000160220965 0.192 AML other m 2019-03-20T21:50:47.00
IV.FDMO.HHE. ML:1.3 0.0001250209 0.128 AML other m 2019-03-20T21:50:47.18
IV.FDMO.HHN. ML:1.2 9.4259685E-5 0.1664 AML other m 2019-03-20T21:50:47.37
IV.GUMA.HHE. ML:1.9 0.000412903 0.3584 AML other m 2019-03-20T21:50:49.01
IV.GUMA.HHN. ML:1.7 0.0002940063 0.192 AML other m 2019-03-20T21:50:49.09
IV.GUMA.HNE. ML:1.9 0.0004341063 0.3456 AML other m 2019-03-20T21:50:48.83
IV.GUMA.HNN. ML:2.4 0.00136691285 1.3824 AML other m 2019-03-20T21:50:56.36
IV.MF5.EHE. ML:1.1 7.654678E-5 1.0624 AML other m 2019-03-20T21:50:48.74
IV.MF5.EHN. ML:1.2 9.9045945E-5 0.1792 AML other m 2019-03-20T21:50:49.16
IV.SMA1.EHE. ML:1 5.846897E-5 0.2432 AML other m 2019-03-20T21:50:49.00
IV.SMA1.EHN. ML:0.9 3.8839455E-5 0.256 AML other m 2019-03-20T21:50:49.98
IV.CESI.HHE. ML:1.5 0.00015302545 0.3456 AML other m 2019-03-20T21:50:49.39
IV.CESI.HHN. ML:1.5 0.0001718631 0.2304 AML other m 2019-03-20T21:50:49.70
IV.LNSS.HHE. ML:1.3 8.840768E-5 0.1792 AML other m 2019-03-20T21:50:51.36
IV.LNSS.HHN. ML:1.2 7.952994E-5 0.1664 AML other m 2019-03-20T21:50:51.32
IV.LNSS.HNE. ML:1.4 0.00012045125 0.8832 AML other m 2019-03-20T21:51:00.40
IV.LNSS.HNN. ML:1.4 0.00010633498 0.6784 AML other m 2019-03-20T21:50:58.19
IV.RM33.HNE. ML:1.6 0.00015604495 0.7168 AML other m 2019-03-20T21:51:03.87
IV.RM33.HNN. ML:1.6 0.00013680095 0.832 AML other m 2019-03-20T21:51:05.52
IV.RM33.EHE. ML:0.7 2.242029E-5 0.1152 AML other m 2019-03-20T21:50:53.01
IV.RM33.EHN. ML:0.9 2.861481E-5 1.0496 AML other m 2019-03-20T21:50:50.29
IV.TERO.HHE. ML:1 3.004235E-5 0.1024 AML other m 2019-03-20T21:50:53.43
IV.TERO.HHN. ML:1 3.6609035E-5 0.1408 AML other m 2019-03-20T21:50:53.08
IV.TERO.HNE. ML:1.6 0.0001294733925 1.1904 AML other m 2019-03-20T21:50:47.59
IV.TERO.HNN. ML:1.4 7.549606E-5 0.7296 AML other m 2019-03-20T21:50:52.20
IV.MNTT.EHE. ML:1.6 0.00013688665 0.4096 AML other m 2019-03-20T21:50:54.17
IV.MNTT.EHN. ML:1.7 0.00015854235 1.0624 AML other m 2019-03-20T21:50:47.02
IV.MOMA.HNE. ML:1.6 9.858096E-5 0.832 AML other m 2019-03-20T21:50:54.64
IV.MOMA.HNN. ML:1.7 0.00012336115 0.6272 AML other m 2019-03-20T21:50:50.59
IV.MOMA.HHE. ML:1.1 2.9359E-5 0.1792 AML other m 2019-03-20T21:50:57.72
IV.MOMA.HHN. ML:0.8 1.6099755E-5 0.2816 AML other m 2019-03-20T21:50:57.68
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