INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 0.9 on date 14-05-2018 and time 05:21:02 (Italy) in region 7 km W Accumoli (RI)

A magnitude ML 0.9 earthquake occured in region: 7 km W Accumoli (RI), on

  • 14-05-2018 03:21:02 (UTC)
  • 14-05-2018 05:21:02 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.72, 13.17 at 11 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 7 667 667
Norcia PG 10 4957 5624
Cittareale RI 12 482 6106
Arquata del Tronto AP 12 1178 7284
Cascia PG 13 3217 10501
Amatrice RI 15 2657 13158
Poggiodomo PG 19 117 13275
Montegallo AP 19 523 13798
Castelsantangelo sul Nera MC 19 281 14079
Monteleone di Spoleto PG 19 599 14678

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km W of Teramo (54892 inhabitants)
46 Km NW of L'Aquila (69753 inhabitants)
46 Km SE of Foligno (57155 inhabitants)
46 Km E of Terni (111501 inhabitants)
76 Km SE of Perugia (166134 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
88 Km NE of Guidonia Montecelio (88673 inhabitants)
90 Km NE of Tivoli (56533 inhabitants)
90 Km W of Pescara (121014 inhabitants)
92 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 0.9 2018-05-14
03:21:02
42.72 13.17 11 2018-05-14
03:48:58
Sala Sismica INGV-Roma 56852461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-05-14 03:21:02 ± 0.05
Latitude 42.72 ± 0.00
Longitude 13.17 ± 0.00
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 56852461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 359
Semi-minor axis of confidence ellipse (meter) 280
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 72
Circular confidence region, given by single value of horizontal uncertainty (meter) 360
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 90
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.33635
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 56852461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-05-14 03:48:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MTGR.HHZ. 2018-05-14T03:22:18.26 3.0 negative manual Pg 11.4 0
IV.MMGO.HHZ. 2018-05-14T03:22:04.67 3.0 negative manual Pn -5.39 0
IV.TDS.HHZ. 2018-05-14T03:22:00.33 3.0 undecidable manual Pg 4.77 0
IV.EUCT.HNZ. 2018-05-14T03:21:34.80 3.0 undecidable manual Pn -0.79 0
IV.T1221.EHZ. 2018-05-14T03:21:29.26 1.0 undecidable manual Sg 9.47 0
IV.MTCE.HHZ. 2018-05-14T03:21:28.13 3.0 undecidable manual Sn -5.03 0
IV.ARRO.EHZ. 2018-05-14T03:21:23.27 0.6 undecidable manual Sn -0.03 1.12
IV.LIK.EHZ.01 2018-05-14T03:21:22.59 3.0 undecidable manual Pg 1.87 0
OB.GAVE.EHZ. 2018-05-14T03:21:10.61 0.6 undecidable manual S 261 0.2032 50 -0.09 49
IV.MC2.EHZ. 2018-05-14T03:21:10.28 0.6 undecidable manual S 5 0.188 50 0.03 50
IV.MMO1.EHZ. 2018-05-14T03:21:10.94 0.6 undecidable manual S 34 0.2104 50 0.01 50
IV.SMA1.EHZ. 2018-05-14T03:21:09.09 0.1 undecidable manual S 127 0.1547 122 -0.19 97
IV.TERO.HHZ. 2018-05-14T03:21:09.31 1.0 undecidable manual P 107 0.3363 50 -0.09 24
IV.RM33.EHZ. 2018-05-14T03:21:07.40 1.0 undecidable manual P 171 0.2176 50 0.04 25
OB.GAVE.EHZ. 2018-05-14T03:21:07.12 0.1 undecidable manual P 261 0.2032 50 0.01 100
IV.NRCA.HHZ. 2018-05-14T03:21:07.91 0.6 undecidable manual S 341 0.116 130 -0.15 49
IV.MMO1.EHZ. 2018-05-14T03:21:07.31 0.6 negative manual P 34 0.2104 50 0.07 49
IV.CPGN.EHZ. 2018-05-14T03:21:07.02 3.0 undecidable manual P 1.5 0
IV.SMA1.EHZ. 2018-05-14T03:21:06.53 0.1 undecidable manual P 127 0.1547 122 0.25 96
IV.MC2.EHZ. 2018-05-14T03:21:06.75 0.1 undecidable manual P 5 0.188 50 -0.1 99
IV.NRCA.HHZ. 2018-05-14T03:21:05.68 0.1 undecidable manual P 341 0.116 130 0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.1 0.0001176 0.48 AML other m 2018-05-14T03:21:08.02
IV.NRCA.HHN. ML:0.9 7.465E-5 0.58 AML other m 2018-05-14T03:21:08.58
OB.GAVE.EHE. ML:1.1 7.425E-5 1.48 AML other m 2018-05-14T03:21:10.80
OB.GAVE.EHN. ML:1.1 7.26E-5 0.7 AML other m 2018-05-14T03:21:11.05
IV.TERO.HHN. ML:0.7 1.895E-5 0.9 AML other m 2018-05-14T03:21:15.74
IV.TERO.HHE. ML:0.7 1.925E-5 0.72 AML other m 2018-05-14T03:21:15.33
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