Earthquake with magnitude of ML 0.9 on date 26-08-2019 and time 20:56:31 (Italy) in region 3 km NE Amatrice (RI)

A magnitude ML 0.9 earthquake occured in region: 3 km NE Amatrice (RI), on

  • 26-08-2019 18:56:31 (UTC)
  • 26-08-2019 20:56:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.65, 13.32 at 7 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
Amatrice RI 3 2657 2657
Accumoli RI 8 667 3324
Campotosto AQ 11 542 3866
Cittareale RI 13 482 4348
Capitignano AQ 14 665 5013
Arquata del Tronto AP 14 1178 6191
Montereale AQ 15 2581 8772
Acquasanta Terme AP 16 2916 11688
Cortino TE 16 656 12344
Crognaleto TE 17 1297 13641
Valle Castellana TE 18 977 14618
Rocca Santa Maria TE 18 537 15155

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km W of Teramo (54892 inhabitants)
33 Km N of L'Aquila (69753 inhabitants)
56 Km E of Terni (111501 inhabitants)
61 Km SE of Foligno (57155 inhabitants)
70 Km W of Montesilvano (53738 inhabitants)
76 Km W of Pescara (121014 inhabitants)
77 Km W of Chieti (51815 inhabitants)
87 Km NE of Guidonia Montecelio (88673 inhabitants)
87 Km NE of Tivoli (56533 inhabitants)
92 Km SE of Perugia (166134 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 2019-08-26
18:56:31
42.65 13.32 7 2019-08-26
19:01:11
Sala Sismica INGV-Roma 71828131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-26 18:56:31 ± 0.09
Latitude 42.65 ± 0.00
Longitude 13.32 ± 0.00
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71828131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 443
Semi-minor axis of confidence ellipse (meter) 185
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 80
Circular confidence region, given by single value of horizontal uncertainty (meter) 440
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 112
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.01979
Epicentral distance of station farthest from the epicenter (degree) 0.35523
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 71828131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-26 19:01:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MF5.EHZ. 2019-08-26T18:56:45.36 0.3 undecidable manual S 17 0.3552 50 0.48 66
IV.GIGS.HHZ. 2019-08-26T18:56:41.29 0.1 undecidable manual S 136 0.2689 104 -0.4 91
IV.NRCA.HHZ. 2019-08-26T18:56:40.24 0.1 undecidable manual S 321 0.2401 105 -0.37 92
IV.MMO1.EHZ. 2019-08-26T18:56:40.88 0.3 undecidable manual S 1 0.2518 105 -0.19 72
IV.TERO.HHZ. 2019-08-26T18:56:39.53 0.1 undecidable manual S 97 0.2104 107 0.01 100
IV.MF5.EHZ. 2019-08-26T18:56:39.04 0.1 undecidable manual P 17 0.3552 50 0.01 97
IV.RM33.EHZ. 2019-08-26T18:56:37.82 0.1 undecidable manual S 209 0.1583 112 0.18 97
IV.MMO1.EHZ. 2019-08-26T18:56:36.68 0.1 undecidable manual P 1 0.2518 105 -0.15 96
IV.GIGS.HHZ. 2019-08-26T18:56:36.92 0.1 undecidable manual P 136 0.2689 104 -0.27 94
IV.MTRA.EHZ. 2019-08-26T18:56:36.49 0.1 undecidable manual S 27 0.1232 118 0.08 100
IV.NRCA.HHZ. 2019-08-26T18:56:36.54 0.1 negative manual P 321 0.2401 105 -0.03 99
IV.TERO.HHZ. 2019-08-26T18:56:35.96 0.1 undecidable manual P 97 0.2104 107 0.03 99
IV.MTRA.EHZ. 2019-08-26T18:56:34.29 0.1 undecidable manual P 27 0.1232 118 0.15 99
IV.RM33.EHZ. 2019-08-26T18:56:34.90 0.1 undecidable manual P 209 0.1583 112 0.05 100
IV.SMA1.EHZ. 2019-08-26T18:56:33.86 0.1 undecidable manual S 146 0.0198 163 0.18 100
IV.SMA1.EHZ. 2019-08-26T18:56:32.81 0.1 positive manual P 146 0.0198 163 0.25 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:1 0.0001115 0.24 AML other m 2019-08-26T18:56:36.88
IV.MTRA.EHN. ML:1 0.000115 1.76 AML other m 2019-08-26T18:56:37.98
IV.RM33.EHN. ML:0.8 5.0E-5 1.48 AML other m 2019-08-26T18:56:38.12
IV.TERO.HHN. ML:1 6.12E-5 0.5 AML other m 2019-08-26T18:56:39.54
IV.TERO.HHE. ML:0.8 4.63E-5 0.48 AML other m 2019-08-26T18:56:39.58
IV.NRCA.HHN. ML:1 5.765E-5 0.4 AML other m 2019-08-26T18:56:40.66
IV.RM33.EHE. ML:0.6 3.555E-5 0.22 AML other m 2019-08-26T18:56:40.83
IV.NRCA.HHE. ML:1.2 7.945E-5 1.52 AML other m 2019-08-26T18:56:41.03
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