INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.1 on date 18-01-2019 and time 06:40:20 (Italy) in region 8 km NW Accumoli (RI)

A magnitude ML 1.1 earthquake occured in region: 8 km NW Accumoli (RI), on

  • 18-01-2019 05:40:20 (UTC)
  • 18-01-2019 06:40:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.73, 13.16 at 9 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
Accumoli RI 8 667 667
Norcia PG 9 4957 5624
Arquata del Tronto AP 12 1178 6802
Cascia PG 12 3217 10019
Cittareale RI 13 482 10501
Amatrice RI 16 2657 13158
Castelsantangelo sul Nera MC 18 281 13439
Poggiodomo PG 19 117 13556
Montegallo AP 19 523 14079
Preci PG 19 724 14803
Monteleone di Spoleto PG 19 599 15402

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km SE of Foligno (57155 inhabitants)
45 Km W of Teramo (54892 inhabitants)
46 Km E of Terni (111501 inhabitants)
47 Km NW of L'Aquila (69753 inhabitants)
75 Km SE of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
89 Km NE of Guidonia Montecelio (88673 inhabitants)
91 Km NE of Tivoli (56533 inhabitants)
91 Km W of Pescara (121014 inhabitants)
93 Km W of Chieti (51815 inhabitants)
93 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 2019-01-18
05:40:20
42.73 13.16 9 2019-01-18
05:44:10
Sala Sismica INGV-Roma 64750131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-01-18 05:40:20 ± 0.09
Latitude 42.73 ± 0.00
Longitude 13.16 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 64750131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 682
Semi-minor axis of confidence ellipse (meter) 258
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 292
Circular confidence region, given by single value of horizontal uncertainty (meter) 680
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 129
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.33545
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 64750131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-01-18 05:44:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MMUR.HNZ. 2019-01-18T05:40:34.24 3.0 negative manual P -0.24 0
IV.MF5.EHZ. 2019-01-18T05:40:33.98 0.1 undecidable manual S 41 0.3354 50 0.57 86
IV.FDMO.HHZ. 2019-01-18T05:40:32.15 0.1 undecidable manual S 350 0.3076 50 -0.44 90
IV.RM33.EHZ. 2019-01-18T05:40:29.58 0.1 undecidable manual S 170 0.2275 109 -0.24 96
IV.GAVE.EHZ. 2019-01-18T05:40:28.87 0.1 undecidable manual S 258 0.2005 112 0.04 100
IV.MMO1.EHZ. 2019-01-18T05:40:28.78 0.1 undecidable manual S 36 0.2059 111 -0.24 96
IV.MF5.EHZ. 2019-01-18T05:40:28.01 1.0 positive manual P 41 0.3354 50 0.04 24
IV.MC2.EHZ. 2019-01-18T05:40:28.29 0.1 undecidable manual S 7 0.179 114 0.21 97
IV.FDMO.HHZ. 2019-01-18T05:40:27.10 1.0 undecidable manual P 350 0.3076 50 -0.39 23
IV.LNSS.HHZ. 2019-01-18T05:40:27.50 0.1 undecidable manual S 214 0.1574 117 0.17 98
IV.RM33.EHZ. 2019-01-18T05:40:25.81 1.0 undecidable manual P 170 0.2275 109 -0.08 25
IV.GAVE.EHZ. 2019-01-18T05:40:25.24 1.0 positive manual P 258 0.2005 112 -0.08 25
IV.MMO1.EHZ. 2019-01-18T05:40:25.32 0.3 undecidable manual P 36 0.2059 111 -0.11 74
IV.LNSS.HHZ. 2019-01-18T05:40:24.57 0.1 positive manual P 214 0.1574 117 0.11 99
IV.MC2.EHZ. 2019-01-18T05:40:24.98 0.6 positive manual P 7 0.179 114 0.09 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.3 0.0001835 0.24 AML other m 2019-01-18T05:40:27.82
IV.LNSS.HHN. ML:1.1 0.00010865 0.46 AML other m 2019-01-18T05:40:28.55
IV.GAVE.EHE. ML:0.9 5.465E-5 0.72 AML other m 2019-01-18T05:40:29.27
IV.GAVE.EHN. ML:0.9 4.905E-5 0.96 AML other m 2019-01-18T05:40:32.16
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