Earthquake with magnitude of ML 0.9 on date 25-08-2019 and time 18:23:46 (UTC) in region 4 km S Castelsantangelo sul Nera (MC)

A magnitude ML 0.9 earthquake occured in region: 4 km S Castelsantangelo sul Nera (MC), on

  • 25-08-2019 18:23:46 (UTC)
  • 25-08-2019 20:23:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.86, 13.15 at 12 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 4 281 281
Norcia PG 8 4957 5238
Preci PG 9 724 5962
Visso MC 10 1107 7069
Ussita MC 10 444 7513
Montegallo AP 15 523 8036
Arquata del Tronto AP 15 1178 9214
Montemonaco AP 15 604 9818
Bolognola MC 17 142 9960
Sellano PG 18 1079 11039
Montefortino FM 19 1178 12217
Cascia PG 19 3217 15434
Cerreto di Spoleto PG 19 1075 16509
Monte Cavallo MC 20 145 16654
Acquacanina MC 20 121 16775
Accumoli RI 20 667 17442

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Foligno (57155 inhabitants)
50 Km W of Teramo (54892 inhabitants)
52 Km NE of Terni (111501 inhabitants)
60 Km NW of L'Aquila (69753 inhabitants)
68 Km E of Perugia (166134 inhabitants)
90 Km SW of Ancona (100861 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
97 Km W of Pescara (121014 inhabitants)
98 Km NE of Viterbo (67173 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 0.9 2019-08-25
18:23:46
42.86 13.15 12 2019-08-25
18:46:57
Sala Sismica INGV-Roma 71806111
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-25 18:23:46 ± 0.05
Latitude 42.86 ± 0.00
Longitude 13.15 ± 0.00
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71806111

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 333
Semi-minor axis of confidence ellipse (meter) 129
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 94
Circular confidence region, given by single value of horizontal uncertainty (meter) 330
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 117
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.2653
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 71806111
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-25 18:46:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
CR.ZAG.BHZ. 2019-08-25T18:25:20.54 3.0 undecidable manual Sn 3.65 0
IV.EUCT.HNZ. 2019-08-25T18:25:15.25 3.0 undecidable manual Sn -5.34 0
IV.DGI.HHZ. 2019-08-25T18:25:14.92 3.0 undecidable manual Sg 6.4 0
OX.VARN.HHZ. 2019-08-25T18:25:14.91 3.0 undecidable manual Sn 4.81 0
IV.GMB.BHZ. 2019-08-25T18:24:39.06 3.0 undecidable manual Pn -5.37 0
IV.GATE.HHZ. 2019-08-25T18:24:34.75 3.0 undecidable manual Sg 11.1 0
IV.SBPO.HNZ. 2019-08-25T18:24:33.40 3.0 undecidable manual Pg 12.25 0
IV.CIGN.HHZ. 2019-08-25T18:24:25.64 3.0 undecidable manual Sn 3.95 0
IV.SACR.HHZ. 2019-08-25T18:24:21.20 3.0 undecidable manual Sn -1.68 0
IV.NDIM.HNZ. 2019-08-25T18:24:18.84 3.0 negative manual Pn -0.64 0
IV.PZUN.HHZ. 2019-08-25T18:24:15.39 3.0 negative manual Pn -0.85 0
IV.CAFE.HHZ. 2019-08-25T18:24:11.59 3.0 undecidable manual Pg 2.93 0
IV.VVLD.HHZ. 2019-08-25T18:24:07.68 3.0 undecidable manual Sg 1.89 0
IV.LNSS.HHE. 2019-08-25T18:23:56.59 0.3 undecidable manual S 198 0.2653 95 0.21 70
IV.SMA1.EHZ. 2019-08-25T18:23:56.35 0.1 undecidable manual S 149 0.2635 95 0.02 98
IV.CSP1.EHZ. 2019-08-25T18:23:55.74 0.1 undecidable manual S 10 0.2392 96 0.11 96
IV.FDMO.HHZ. 2019-08-25T18:23:54.04 0.1 undecidable manual S 346 0.1862 100 -0.03 99
IV.MMO1.EHZ. 2019-08-25T18:23:52.68 0.1 undecidable manual S 71 0.1376 110 0.02 100
IV.SMA1.EHZ. 2019-08-25T18:23:51.80 1.0 positive manual P 149 0.2635 95 -0.2 23
IV.LNSS.HHE. 2019-08-25T18:23:51.87 0.1 undecidable manual P 198 0.2653 95 -0.16 95
IV.CSP1.EHZ. 2019-08-25T18:23:51.48 1.0 negative manual P 10 0.2392 96 -0.11 24
IV.NRCA.HHZ. 2019-08-25T18:23:50.38 0.3 undecidable manual S 229 0.0342 159 -0.06 76
IV.FDMO.HHZ. 2019-08-25T18:23:50.59 1.0 negative manual P 346 0.1862 100 -0.09 24
IV.BARO.EHZ. 2019-08-25T18:23:50.55 3.0 undecidable manual P -3.78 0
IV.VIVA.HHZ. 2019-08-25T18:23:49.14 3.0 undecidable manual P -4.32 0
IV.MMO1.EHZ. 2019-08-25T18:23:49.84 0.6 undecidable manual P 71 0.1376 110 -0.03 50
IV.NRCA.HHZ. 2019-08-25T18:23:48.64 0.3 undecidable manual P 229 0.0342 159 0.05 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:0.9 0.00010335 0.92 AML other m 2019-08-25T18:23:50.42
IV.NRCA.HHE. ML:1 0.0001455 0.68 AML other m 2019-08-25T18:23:50.47
IV.NDIM.HNN. ML:3.6 0.0005285 0.44 AML other m 2019-08-25T18:24:24.60
IV.NDIM.HHE. ML:3.8 0.000858 0.08 AML other m 2019-08-25T18:24:25.76
IV.NDIM.HNE. ML:3.8 0.0009465 0.08 AML other m 2019-08-25T18:24:25.76
IV.NDIM.HHN. ML:3.6 0.000596 0.08 AML other m 2019-08-25T18:24:27.59
IV.PZUN.HNN. ML:3.5 0.0003125 1.18 AML other m 2019-08-25T18:24:50.88
IV.PZUN.HNE. ML:3.6 0.0003745 1.06 AML other m 2019-08-25T18:24:50.84
IV.EUCT.HNE. ML:4.1 0.0006575 0.72 AML other m 2019-08-25T18:25:21.18
IV.EUCT.HNN. ML:4.1 0.0006035 0.4 AML other m 2019-08-25T18:25:22.18
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
Waveforms Seismic signals in full SEED format Download