Earthquake with magnitude of ML 0.8 on date 18-08-2019 and time 10:56:34 (Italy) in region 1 km S Accumoli (RI)

A magnitude ML 0.8 earthquake occured in region: 1 km S Accumoli (RI), on

  • 18-08-2019 08:56:34 (UTC)
  • 18-08-2019 10:56:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.68, 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
Accumoli RI 1 667 667
Amatrice RI 7 2657 3324
Cittareale RI 11 482 3806
Arquata del Tronto AP 11 1178 4984
Acquasanta Terme AP 16 2916 7900
Campotosto AQ 17 542 8442
Montereale AQ 18 2581 11023
Norcia PG 18 4957 15980
Capitignano AQ 19 665 16645
Montegallo AP 19 523 17168
Cascia PG 20 3217 20385

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km W of Teramo (54892 inhabitants)
39 Km NW of L'Aquila (69753 inhabitants)
51 Km E of Terni (111501 inhabitants)
54 Km SE of Foligno (57155 inhabitants)
76 Km W of Montesilvano (53738 inhabitants)
82 Km W of Pescara (121014 inhabitants)
84 Km W of Chieti (51815 inhabitants)
85 Km SE of Perugia (166134 inhabitants)
87 Km NE of Guidonia Montecelio (88673 inhabitants)
88 Km NE of Tivoli (56533 inhabitants)
99 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 0.8 2019-08-18
08:56:34
42.68 13.25 13 2019-08-18
09:06:12
Sala Sismica INGV-Roma 71598621
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-18 08:56:34 ± 0.07
Latitude 42.68 ± 0.00
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 71598621

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 360
Semi-minor axis of confidence ellipse (meter) 158
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 254
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) 83
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.40919
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 11
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 71598621
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-18 09:06:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RIBO.EHZ.01 2019-08-18T08:57:07.34 3.0 positive manual Pg 4.05 0
IV.PIEI.HHZ. 2019-08-18T08:56:54.59 3.0 positive manual P 0.35 0
IV.SNTG.HHZ. 2019-08-18T08:56:53.30 3.0 undecidable manual S -3.44 0
IV.CSP1.EHZ. 2019-08-18T08:56:49.35 0.3 undecidable manual S 355 0.4092 93 0.27 68
IV.FDMO.HHZ. 2019-08-18T08:56:48.07 0.3 undecidable manual S 341 0.3723 94 0.08 72
IV.GIGS.HHZ. 2019-08-18T08:56:46.62 0.3 undecidable manual S 134 0.3301 94 -0.12 71
IV.MC2.EHZ. 2019-08-18T08:56:43.94 0.3 undecidable manual S 348 0.232 98 0.09 73
IV.CSP1.EHZ. 2019-08-18T08:56:43.04 0.3 undecidable manual P 355 0.4092 93 0.13 70
IV.MMO1.HNZ. 2019-08-18T08:56:43.47 0.3 undecidable manual S 14 0.2221 99 -0.09 74
IV.FDMO.HHZ. 2019-08-18T08:56:42.30 0.3 undecidable manual P 341 0.3723 94 0.01 73
IV.RM33.EHZ. 2019-08-18T08:56:42.28 0.3 undecidable manual S 189 0.1772 104 0.02 75
IV.LNSS.HHZ. 2019-08-18T08:56:42.09 0.3 undecidable manual S 243 0.1763 104 -0.13 73
IV.NRCA.HHZ. 2019-08-18T08:56:42.00 0.1 undecidable manual S 326 0.1808 103 -0.35 94
IV.GIGS.HHZ. 2019-08-18T08:56:41.39 0.6 undecidable manual P 134 0.3301 94 -0.17 47
IV.MTRA.EHZ. 2019-08-18T08:56:40.59 0.3 undecidable manual S 55 0.1286 116 -0.3 72
IV.SMA1.EHZ. 2019-08-18T08:56:39.51 0.3 undecidable manual S 131 0.0809 135 -0.24 74
IV.MC2.EHZ. 2019-08-18T08:56:39.94 0.6 undecidable manual P 348 0.232 98 0.05 49
IV.RM33.EHZ. 2019-08-18T08:56:39.10 0.1 undecidable manual P 189 0.1772 104 0.13 99
IV.MMO1.HNZ. 2019-08-18T08:56:39.65 0.6 undecidable manual P 14 0.2221 99 -0.07 49
IV.T1299.HNZ. 2019-08-18T08:56:39.24 0.3 undecidable manual S 156 0.054 148 -0.01 77
IV.MTRA.EHZ. 2019-08-18T08:56:38.26 0.1 undecidable manual P 55 0.1286 116 0.08 100
IV.NRCA.HHZ. 2019-08-18T08:56:38.97 0.1 undecidable manual P 326 0.1808 103 -0.06 99
IV.LNSS.HHZ. 2019-08-18T08:56:38.97 0.3 undecidable manual P 243 0.1763 104 0.02 76
IV.T1299.HNZ. 2019-08-18T08:56:37.53 0.1 undecidable manual P 156 0.054 148 0.29 97
IV.SMA1.EHZ. 2019-08-18T08:56:37.78 0.3 undecidable manual P 131 0.0809 135 0.25 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:0.7 5.66355E-5 0.1152 AML other m 2019-08-18T08:56:40.39
IV.SMA1.EHN. ML:0.7 5.694184E-5 0.1792 AML other m 2019-08-18T08:56:39.80
IV.MTRA.HNE. ML:1 9.258491E-5 0.1856 AML other m 2019-08-18T08:56:40.71
IV.MTRA.HNN. ML:1.2 0.0001260643935 0.1472 AML other m 2019-08-18T08:56:40.70
IV.MTRA.EHE. ML:0.9 7.0051975E-5 0.1024 AML other m 2019-08-18T08:56:40.72
IV.MTRA.EHN. ML:1.1 0.000104389135 0.1408 AML other m 2019-08-18T08:56:40.71
IV.NRCA.HNE. ML:1.5 0.0002141029 0.1472 AML other m 2019-08-18T08:56:42.23
IV.NRCA.HNN. ML:1.3 0.000146606665 0.1664 AML other m 2019-08-18T08:56:42.15
IV.NRCA.HHE. ML:1.6 0.00025505305 0.1408 AML other m 2019-08-18T08:56:42.16
IV.NRCA.HHN. ML:1.3 0.00013557515 0.16 AML other m 2019-08-18T08:56:42.15
IV.RM33.HNE. ML:0.8 4.5379315E-5 0.5632 AML other m 2019-08-18T08:56:42.45
IV.RM33.HNN. ML:1 7.233112E-5 0.2368 AML other m 2019-08-18T08:56:42.61
IV.RM33.EHE. ML:0.8 4.338347E-5 0.1984 AML other m 2019-08-18T08:56:42.55
IV.RM33.EHN. ML:0.8 4.202376E-5 0.1408 AML other m 2019-08-18T08:56:42.54
IV.GIGS.HHE. ML:0 1.9377105E-6 0.0832 AML other m 2019-08-18T08:56:47.27
IV.GIGS.HHN. ML:0 2.435613E-6 0.256 AML other m 2019-08-18T08:56:46.90
IV.FDMO.HHE. ML:0.2 7.1156795E-6 0.1216 AML other m 2019-08-18T08:56:48.52
IV.FDMO.HHN. ML:0.5 1.200859E-5 0.1792 AML other m 2019-08-18T08:56:48.42
IV.CSP1.EHE. ML:0.5 8.23805E-6 0.4352 AML other m 2019-08-18T08:56:49.76
IV.CSP1.EHN. ML:0.5 1.2267135E-5 0.4416 AML other m 2019-08-18T08:56:49.74
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