Earthquake with magnitude of ML 1.0 on date 09-08-2019 and time 13:18:55 (Italy) in region 5 km W Amatrice (RI)

A magnitude ML 1.0 earthquake occured in region: 5 km W Amatrice (RI), on

  • 09-08-2019 11:18:55 (UTC)
  • 09-08-2019 13:18:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.63, 13.23 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
Amatrice RI 5 2657 2657
Cittareale RI 6 482 3139
Accumoli RI 7 667 3806
Montereale AQ 12 2581 6387
Capitignano AQ 14 665 7052
Campotosto AQ 14 542 7594
Borbona RI 15 617 8211
Posta RI 16 694 8905
Arquata del Tronto AP 17 1178 10083
Cagnano Amiterno AQ 19 1369 11452

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km NW of L'Aquila (69753 inhabitants)
39 Km W of Teramo (54892 inhabitants)
48 Km E of Terni (111501 inhabitants)
56 Km SE of Foligno (57155 inhabitants)
76 Km W of Montesilvano (53738 inhabitants)
81 Km NE of Guidonia Montecelio (88673 inhabitants)
82 Km NE of Tivoli (56533 inhabitants)
83 Km W of Pescara (121014 inhabitants)
83 Km W of Chieti (51815 inhabitants)
87 Km SE of Perugia (166134 inhabitants)
95 Km E 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 1.0 2019-08-09
11:18:55
42.63 13.23 12 2019-08-09
11:24:34
Sala Sismica INGV-Roma 71303491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-09 11:18:55 ± 0.08
Latitude 42.63 ± 0.01
Longitude 13.23 ± 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 71303491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 481
Semi-minor axis of confidence ellipse (meter) 402
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 10
Circular confidence region, given by single value of horizontal uncertainty (meter) 480
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 94
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.03777
Epicentral distance of station farthest from the epicenter (degree) 0.27699
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 71303491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-09 11:24:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TERO.HHZ. 2019-08-09T11:19:05.70 0.6 undecidable manual S 92 0.2743 93 -0.35 45
IV.MMO1.EHZ. 2019-08-09T11:19:05.90 0.6 undecidable manual S 15 0.277 93 -0.22 47
IV.GAVE.EHZ. 2019-08-09T11:19:05.25 0.6 undecidable manual S 284 0.2545 94 -0.22 47
IV.NRCA.HHZ. 2019-08-09T11:19:04.27 0.6 undecidable manual S 337 0.2194 95 -0.15 48
IV.MTRA.EHZ. 2019-08-09T11:19:02.86 0.6 undecidable manual S 44 0.1745 99 -0.25 47
IV.LNSS.HHZ. 2019-08-09T11:19:02.04 0.3 undecidable manual S 259 0.143 106 -0.16 73
IV.RM33.EHZ. 2019-08-09T11:19:01.30 0.6 undecidable manual S 186 0.1232 113 -0.33 46
IV.GAVE.EHZ. 2019-08-09T11:19:01.41 0.6 negative manual P 284 0.2545 94 0.17 47
IV.TERO.HHZ. 2019-08-09T11:19:01.68 1.0 undecidable manual P 92 0.2743 93 0.11 24
IV.MMO1.EHZ. 2019-08-09T11:19:01.82 1.0 positive manual P 15 0.277 93 0.21 23
IV.NRCA.HHZ. 2019-08-09T11:19:00.78 0.3 negative manual P 337 0.2194 95 0.15 71
IV.MTRA.EHZ. 2019-08-09T11:19:00.00 0.1 undecidable manual P 44 0.1745 99 0.13 97
IV.SMA1.EHZ. 2019-08-09T11:19:00.50 0.6 undecidable manual S 91 0.0764 134 0.01 51
IV.LNSS.HHZ. 2019-08-09T11:18:59.49 0.1 undecidable manual P 259 0.143 106 0.14 97
IV.RM33.EHZ. 2019-08-09T11:18:59.15 0.6 positive manual P 186 0.1232 113 0.13 49
IV.T1299.EHZ. 2019-08-09T11:18:59.55 0.3 undecidable manual S 86 0.0378 156 -0.26 72
IV.SMA1.EHZ. 2019-08-09T11:18:58.67 0.1 positive manual P 91 0.0764 134 0.31 95
IV.T1299.EHZ. 2019-08-09T11:18:58.08 0.1 undecidable manual P 86 0.0378 156 0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.2 0.000206 0.76 AML other m 2019-08-09T11:19:00.39
IV.SMA1.EHE. ML:1.6 0.0004805 0.22 AML other m 2019-08-09T11:19:00.82
IV.RM33.EHE. ML:1.1 0.0001325 1.86 AML other m 2019-08-09T11:19:01.00
IV.RM33.EHN. ML:1 8.55E-5 1.04 AML other m 2019-08-09T11:19:02.70
IV.MTRA.EHE. ML:0.7 3.735E-5 0.32 AML other m 2019-08-09T11:19:03.22
IV.MTRA.EHN. ML:0.8 5.02E-5 1.06 AML other m 2019-08-09T11:19:03.23
IV.NRCA.HHN. ML:1 5.265E-5 0.56 AML other m 2019-08-09T11:19:04.75
IV.NRCA.HHE. ML:1.2 9.25E-5 0.1 AML other m 2019-08-09T11:19:04.57
IV.GAVE.EHN. ML:0.8 3.28E-5 1.24 AML other m 2019-08-09T11:19:06.79
IV.GAVE.EHE. ML:0.8 3.31E-5 0.18 AML other m 2019-08-09T11:19:06.21
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