Earthquake with magnitude of ML 1.0 on date 01-10-2021 and time 06:08:39 (Italy) in region 5 km E Antrodoco (RI)

A magnitude ML 1.0 earthquake occured in region: 5 km E Antrodoco (RI), on

  • 01-10-2021 04:08:39 (UTC)
  • 01-10-2021 06:08:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.398, 13.137 at 16 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
Antrodoco RI 5 2588 2588
Borgo Velino RI 6 972 3560
Castel Sant'Angelo RI 9 1308 4868
Micigliano RI 9 127 4995
Cagnano Amiterno AQ 10 1369 6364
Scoppito AQ 10 3727 10091
Petrella Salto RI 13 1197 11288
Borbona RI 13 617 11905
Barete AQ 13 737 12642
Pizzoli AQ 14 4326 16968
Posta RI 14 694 17662
Fiamignano RI 15 1413 19075
Concerviano RI 15 291 19366
Cittaducale RI 16 6828 26194
Montereale AQ 17 2581 28775
Tornimparte AQ 18 3187 31962
Capitignano AQ 19 665 32627
Longone Sabino RI 20 597 33224
Varco Sabino RI 20 187 33411

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km W of L'Aquila (69753 inhabitants)
44 Km E of Terni (111501 inhabitants)
55 Km SW of Teramo (54892 inhabitants)
56 Km NE of Guidonia Montecelio (88673 inhabitants)
56 Km NE of Tivoli (56533 inhabitants)
72 Km SE of Foligno (57155 inhabitants)
78 Km NE of Roma (2864731 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
84 Km NE of Velletri (53303 inhabitants)
85 Km E of Viterbo (67173 inhabitants)
85 Km W of Chieti (51815 inhabitants)
89 Km W of Pescara (121014 inhabitants)
96 Km NE of Pomezia (62966 inhabitants)
98 Km NE of Aprilia (73446 inhabitants)
100 Km SE of Perugia (166134 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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
Reviewed
Rev100
ML 1.0 2021-10-01
04:08:39
42.3982 13.137 16 2021-10-01
04:12:50
Sala Sismica INGV-Roma 96089011
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-01 04:08:39 ± 0.16
Latitude 42.3982 ± 0.0054
Longitude 13.1370 ± 0.0134
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96089011

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1034
Semi-minor axis of confidence ellipse (meter) 591
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 109
Circular confidence region, given by single value of horizontal uncertainty (meter) 1030
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 159
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 10
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) 0.43527
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:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 96089011
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-01 04:12:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MNTT.EHZ. 2021-10-01T04:09:05.11 3.0 undecidable manual S -0.08 0
IV.NRCA.HHZ. 2021-10-01T04:08:55.14 0.6 undecidable manual S 358 0.4353 97 0.04 50
IV.ARRO.EHZ. 2021-10-01T04:08:52.23 0.6 undecidable manual S 304 0.3283 101 0.28 49
IV.LNSS.HHZ. 2021-10-01T04:08:48.62 0.6 undecidable manual S 341 0.2167 110 -0.14 51
IV.NRCA.HHZ. 2021-10-01T04:08:48.52 0.1 undecidable manual P 358 0.4353 97 -0.06 100
IV.RM33.EHZ. 2021-10-01T04:08:46.26 0.6 undecidable manual S 27 0.125 129 -0.12 53
IV.ARRO.EHZ. 2021-10-01T04:08:46.58 0.1 undecidable manual P 304 0.3283 101 -0.18 99
IV.FIAM.HHZ. 2021-10-01T04:08:46.38 0.6 undecidable manual S 186 0.1313 127 -0.14 53
IV.LNSS.HHZ. 2021-10-01T04:08:45.02 0.6 negative manual P 341 0.2167 110 0.1 52
IV.FIAM.HHZ. 2021-10-01T04:08:43.83 1.0 negative manual P 186 0.1313 127 0.2 26
IV.RM33.EHZ. 2021-10-01T04:08:43.80 0.3 positive manual P 27 0.125 129 0.26 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FIAM.HHN. ML:0.7 3.87E-5 0.38 AML other m 2021-10-01T04:08:46.67
IV.FIAM.HHE. ML:0.7 3.805E-5 0.44 AML other m 2021-10-01T04:08:46.50
IV.RM33.EHN. ML:1.2 0.0001305 0.66 AML other m 2021-10-01T04:08:46.37
IV.RM33.EHE. ML:1.3 0.0001695 0.86 AML other m 2021-10-01T04:08:46.46
IV.LNSS.HHE. ML:1 5.26E-5 0.6 AML other m 2021-10-01T04:08:48.85
IV.LNSS.HHN. ML:0.9 4.255E-5 0.56 AML other m 2021-10-01T04:08:50.28
IV.NRCA.HHE. ML:1.1 3.405E-5 1.42 AML other m 2021-10-01T04:08:56.10
IV.NRCA.HHN. ML:1.1 2.76E-5 0.42 AML other m 2021-10-01T04:08:56.77
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