Earthquake with magnitude of ML 1.1 on date 23-03-2019 and time 11:11:47 (UTC) in region 4 km W Amatrice (RI)

A magnitude ML 1.1 earthquake occured in region: 4 km W Amatrice (RI), on

  • 23-03-2019 11:11:47 (UTC)
  • 23-03-2019 12:11:47 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.61, 13.25 at 13 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 4 2657 2657
Cittareale RI 7 482 3139
Accumoli RI 9 667 3806
Montereale AQ 10 2581 6387
Capitignano AQ 11 665 7052
Campotosto AQ 12 542 7594
Borbona RI 15 617 8211
Posta RI 16 694 8905
Cagnano Amiterno AQ 17 1369 10274
Arquata del Tronto AP 18 1178 11452
Barete AQ 18 737 12189
Pizzoli AQ 20 4326 16515

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NW of L'Aquila (69753 inhabitants)
38 Km W of Teramo (54892 inhabitants)
50 Km E of Terni (111501 inhabitants)
59 Km SE of Foligno (57155 inhabitants)
75 Km W of Montesilvano (53738 inhabitants)
81 Km NE of Guidonia Montecelio (88673 inhabitants)
81 Km W of Chieti (51815 inhabitants)
81 Km W of Pescara (121014 inhabitants)
81 Km NE of Tivoli (56533 inhabitants)
89 Km SE of Perugia (166134 inhabitants)
96 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 1.1 2019-03-23
11:11:47
42.61 13.25 13 2019-03-23
11:30:36
Sala Sismica INGV-Roma 66834721
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-03-23 11:11:47 ± 0.08
Latitude 42.61 ± 0.01
Longitude 13.25 ± 0.00
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 66834721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 427
Semi-minor axis of confidence ellipse (meter) 402
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 180
Circular confidence region, given by single value of horizontal uncertainty (meter) 430
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 106
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.27249
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 66834721
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-03-23 11:30:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TDS.HHZ. 2019-03-23T11:13:16.12 3.0 undecidable manual Sn -3.92 0
IV.BRSN.EHZ. 2019-03-23T11:12:42.43 3.0 undecidable manual Sn 1.5 0
IV.SCHR.EHZ. 2019-03-23T11:12:35.78 3.0 negative manual Pn 4.99 0
OX.SABO.HHZ. 2019-03-23T11:12:32.11 3.0 negative manual Pn -4.53 0
IV.NDIM.HHZ. 2019-03-23T11:12:31.28 3.0 positive manual Pn 1.62 0
TV.SF04.EHZ. 2019-03-23T11:12:30.31 3.0 undecidable manual Sg 6.75 0
IV.SLCN.HHZ. 2019-03-23T11:12:25.44 3.0 undecidable manual Pn -0.36 0
IV.MPAG.EHZ. 2019-03-23T11:12:25.35 3.0 undecidable manual Sg 4.01 0
IV.RMP.HHZ. 2019-03-23T11:12:12.29 3.0 undecidable manual Sn -0.07 0
IV.PARC.HHZ. 2019-03-23T11:12:08.86 3.0 undecidable manual Pn 0.75 0
IV.LIK.EHZ.01 2019-03-23T11:12:07.57 3.0 positive manual Pg 5.1 0
IV.CPGN.EHZ. 2019-03-23T11:12:07.67 3.0 positive manual Pn -1.73 0
IV.GAVE.EHZ. 2019-03-23T11:11:58.50 0.6 undecidable manual S 287 0.2725 96 0.05 49
IV.TERO.HHZ. 2019-03-23T11:11:57.88 0.6 undecidable manual S 88 0.2608 97 -0.22 47
IV.NRCA.HHE. 2019-03-23T11:11:57.43 0.6 undecidable manual S 336 0.241 98 -0.09 49
IV.MTRA.EHZ. 2019-03-23T11:11:55.44 0.1 undecidable manual S 37 0.179 104 -0.28 96
IV.GAVE.EHZ. 2019-03-23T11:11:54.02 0.1 undecidable manual P 287 0.2725 96 0.04 99
IV.LNSS.HHZ. 2019-03-23T11:11:54.75 0.6 undecidable manual S 266 0.1538 109 -0.26 48
IV.RM33.EHZ. 2019-03-23T11:11:53.56 0.1 undecidable manual S 194 0.1079 124 -0.22 97
IV.FAGN.HHZ. 2019-03-23T11:11:53.06 3.0 negative manual P 0.31 0
IV.SMA1.EHZ. 2019-03-23T11:11:53.02 0.6 undecidable manual S 75 0.0657 143 0.16 49
IV.TERO.HHZ. 2019-03-23T11:11:53.77 0.1 undecidable manual P 88 0.2608 97 -0.02 98
IV.NRCA.HHE. 2019-03-23T11:11:53.51 0.1 undecidable manual P 336 0.241 98 0.06 98
IV.LNSS.HHZ. 2019-03-23T11:11:52.08 0.1 undecidable manual P 266 0.1538 109 0.08 100
IV.T1299.EHE. 2019-03-23T11:11:52.18 0.3 undecidable manual S 50 0.0315 161 -0.21 75
IV.MTRA.EHZ. 2019-03-23T11:11:52.47 0.1 undecidable manual P 37 0.179 104 0.06 99
IV.SMA1.EHZ. 2019-03-23T11:11:51.05 0.1 positive manual P 75 0.0657 143 0.29 97
IV.RM33.EHZ. 2019-03-23T11:11:51.44 0.1 negative manual P 194 0.1079 124 0.15 100
IV.T1299.EHE. 2019-03-23T11:11:50.60 0.3 undecidable manual P 50 0.0315 161 0.11 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHN. ML:1 8.45E-5 1.86 AML other m 2019-03-23T11:11:55.06
IV.RM33.EHN. ML:0.9 8.15E-5 0.7 AML other m 2019-03-23T11:11:53.99
IV.RM33.EHE. ML:1 9.95E-5 0.28 AML other m 2019-03-23T11:11:53.87
IV.LNSS.HHE. ML:1.2 0.00010975 0.12 AML other m 2019-03-23T11:11:55.16
IV.SMA1.EHE. ML:1.6 0.0004275357 0.256 AML other m 2019-03-23T11:11:53.16
IV.RM33.HNE. ML:1.1 0.00013006929 0.8448 AML other m 2019-03-23T11:11:54.42
IV.MTRA.HNE. ML:1.3 0.00012290845 4.5632 AML other m 2019-03-23T11:12:01.02
IV.MTRA.HNN. ML:1.5 0.00021738705 1.0944 AML other m 2019-03-23T11:11:55.54
IV.MTRA.EHE. ML:0.9 5.258942E-5 0.0768 AML other m 2019-03-23T11:11:55.50
IV.MTRA.EHN. ML:0.9 4.7568445E-5 0.3584 AML other m 2019-03-23T11:11:56.45
IV.TERO.HHE. ML:0.5 1.36005285E-5 0.1408 AML other m 2019-03-23T11:11:59.72
IV.TERO.HHN. ML:0.5 1.5636085E-5 0.1344 AML other m 2019-03-23T11:11:58.40
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