Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 01-10-2019 and time 16:48:40 (UTC) in region 2 km SE Accumoli (RI)

A magnitude ML 0.7 earthquake occured in region: 2 km SE Accumoli (RI), on

  • 01-10-2019 16:48:40 (UTC)
  • 01-10-2019 18:48:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6820, 13.2580 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.

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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 2 667 667
Amatrice RI 6 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 18 665 16645
Montegallo AP 19 523 17168

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)
52 Km E of Terni (111501 inhabitants)
55 Km SE of Foligno (57155 inhabitants)
75 Km W of Montesilvano (53738 inhabitants)
82 Km W of Pescara (121014 inhabitants)
83 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
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 0.7 2019-10-01
16:48:40		 42.682 13.2575 13 2019-10-01
16:52:35		 Sala Sismica INGV-Roma 72958001
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-01 16:48:40 ± 0.16
Latitude 42.6820 ± 0.0072
Longitude 13.2575 ± 0.0098
Depth (km) 13 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 72958001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 827
Semi-minor axis of confidence ellipse (meter) 252
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 253
Circular confidence region, given by single value of horizontal uncertainty (meter) 830.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 135
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.26170
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 72958001
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-01 16:52:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SACS.HNZ. 2019-10-01T16:49:15.91 3.0 undecidable manual S 0.1 0
IV.TERO.HHZ. 2019-10-01T16:48:50.02 0.3 undecidable manual S 103 29.0487 98 -0.36 69
IV.RM33.EHZ. 2019-10-01T16:48:47.66 0.3 undecidable manual S 190 19.5693 107 -0.24 73
IV.NRCA.HHZ. 2019-10-01T16:48:47.96 0.1 undecidable manual S 325 20.4684 106 -0.18 98
IV.MTRA.EHZ. 2019-10-01T16:48:46.39 0.3 undecidable manual S 54 14.0748 119 -0.16 75
IV.TERO.HHZ. 2019-10-01T16:48:46.77 0.6 undecidable manual P 103 29.0487 98 0.72 41
IV.NRCA.HHZ. 2019-10-01T16:48:44.82 0.1 undecidable manual P 325 20.4684 106 0.06 100
IV.RM33.EHZ. 2019-10-01T16:48:44.71 0.3 undecidable manual P 190 19.5693 107 0.09 75
IV.SMA1.EHZ. 2019-10-01T16:48:43.36 0.3 undecidable manual P 132 8.5803 139 0.18 74
IV.MTRA.EHZ. 2019-10-01T16:48:43.96 0.1 undecidable manual P 54 14.0748 119 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:0.6 0.000050799999999999995 1.22 AML other m 2019-10-01T16:48:45.89
IV.SMA1.EHE. ML:0.6 0.00004635 1.06 AML other m 2019-10-01T16:48:45.28
IV.NRCA.HHE. ML:1.0 0.000062 0.08 AML other m 2019-10-01T16:48:48.45
IV.RM33.EHN. ML:0.6 0.00003095 0.64 AML other m 2019-10-01T16:48:48.41
IV.RM33.EHE. ML:0.6 0.000030550000000000004 0.72 AML other m 2019-10-01T16:48:48.24
IV.NRCA.HHN. ML:0.9 0.000048100000000000004 0.96 AML other m 2019-10-01T16:48:48.15
IV.TERO.HHN. ML:0.8 0.00003105 0.18 AML other m 2019-10-01T16:48:50.21
IV.TERO.HHE. ML:0.7 0.00002615 0.06 AML other m 2019-10-01T16:48:50.20
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download