Earthquake with magnitude of ML 1.0 on date 16-10-2021 and time 21:16:12 (Italy) in region 1 km S Borbona (RI)

A magnitude ML 1.0 earthquake occured in region: 1 km S Borbona (RI), on

  • 16-10-2021 19:16:12 (UTC)
  • 16-10-2021 21:16:12 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.501, 13.137 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
Borbona RI 1 617 617
Posta RI 4 694 1311
Micigliano RI 9 127 1438
Cagnano Amiterno AQ 9 1369 2807
Montereale AQ 9 2581 5388
Antrodoco RI 10 2588 7976
Borgo Velino RI 12 972 8948
Barete AQ 13 737 9685
Cittareale RI 13 482 10167
Capitignano AQ 14 665 10832
Castel Sant'Angelo RI 15 1308 12140
Pizzoli AQ 15 4326 16466
Leonessa RI 16 2435 18901
Scoppito AQ 17 3727 22628
Amatrice RI 19 2657 25285
Cantalice RI 19 2755 28040
Cittaducale RI 20 6828 34868

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NW of L'Aquila (69753 inhabitants)
41 Km E of Terni (111501 inhabitants)
50 Km W of Teramo (54892 inhabitants)
62 Km SE of Foligno (57155 inhabitants)
65 Km NE of Guidonia Montecelio (88673 inhabitants)
66 Km NE of Tivoli (56533 inhabitants)
83 Km W of Montesilvano (53738 inhabitants)
85 Km E of Viterbo (67173 inhabitants)
86 Km NE of Roma (2864731 inhabitants)
86 Km W of Chieti (51815 inhabitants)
89 Km W of Pescara (121014 inhabitants)
91 Km SE of Perugia (166134 inhabitants)
95 Km NE of Velletri (53303 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 2021-10-16
19:16:12
42.5007 13.1368 11 2021-10-16
19:22:20
Sala Sismica INGV-Roma 96658341
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-16 19:16:12 ± 0.07
Latitude 42.5007 ± 0.0036
Longitude 13.1368 ± 0.0061
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 96658341

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 495
Semi-minor axis of confidence ellipse (meter) 400
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 270
Circular confidence region, given by single value of horizontal uncertainty (meter) 490
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 141
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.36512
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 96658341
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-16 19:22:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PP3.EHZ. 2021-10-16T19:16:32.49 3.0 negative manual P 1.27 0
IV.NRCA.HHZ. 2021-10-16T19:16:25.10 0.1 undecidable manual S 357 0.3327 50 -0.04 98
IV.TERO.HHZ. 2021-10-16T19:16:25.87 0.1 undecidable manual S 70 0.3651 50 -0.22 94
IV.MTRA.EHE. 2021-10-16T19:16:24.60 0.3 undecidable manual S 37 0.3193 50 -0.13 72
IV.FIAM.HHZ. 2021-10-16T19:16:22.08 0.3 undecidable manual S 184 0.2329 50 -0.1 74
IV.MC2.EHZ. 2021-10-16T19:16:21.46 3.0 negative manual P -0.08 0
IV.SMA1.EHZ. 2021-10-16T19:16:21.28 0.3 undecidable manual S 48 0.1952 50 0.22 72
IV.ARRO.EHZ. 2021-10-16T19:16:21.19 3.0 positive manual P 2.46 0
IV.TERO.HHZ. 2021-10-16T19:16:20.36 0.1 undecidable manual P 70 0.3651 50 -0.09 96
IV.MTRA.EHE. 2021-10-16T19:16:19.54 0.1 undecidable manual P 37 0.3193 50 -0.12 96
IV.NRCA.HHZ. 2021-10-16T19:16:19.96 0.1 undecidable manual P 357 0.3327 50 0.06 97
IV.FIAM.HHZ. 2021-10-16T19:16:18.24 0.3 undecidable manual P 184 0.2329 50 0.05 74
IV.LNSS.HHZ. 2021-10-16T19:16:18.50 0.3 undecidable manual S 325 0.1241 128 -0.31 72
IV.T1299.HNE. 2021-10-16T19:16:17.31 0.1 undecidable manual P 39 0.1709 120 0.2 97
IV.SMA1.EHZ. 2021-10-16T19:16:17.77 0.1 undecidable manual P 48 0.1952 50 0.23 96
IV.LNSS.HHZ. 2021-10-16T19:16:16.39 0.1 undecidable manual P 325 0.1241 128 0.14 99
IV.RM33.EHZ. 2021-10-16T19:16:16.83 0.3 undecidable manual S 82 0.0576 149 -0.26 74
IV.RM33.EHZ. 2021-10-16T19:16:15.43 0.1 undecidable manual P 82 0.0576 149 0.18 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHN. ML:1 0.00012950095 0.1408 AML other m 2021-10-16T19:16:17.22
IV.RM33.EHE. ML:1.4 0.0003391607 0.1408 AML other m 2021-10-16T19:16:17.31
IV.LNSS.HHE. ML:0.9 8.0949405E-5 0.1408 AML other m 2021-10-16T19:16:18.93
IV.LNSS.HHN. ML:1 8.81E-5 1.26 AML other m 2021-10-16T19:16:19.08
IV.NRCA.HHE. ML:1.2 6.1E-5 0.14 AML other m 2021-10-16T19:16:25.97
IV.NRCA.HHN. ML:0.8 2.6898085E-5 0.1152 AML other m 2021-10-16T19:16:27.03
IV.RM33.HNE. ML:1.4 0.00035822025 0.1408 AML other m 2021-10-16T19:16:17.31
IV.RM33.HNN. ML:1 0.00015773305 0.2944 AML other m 2021-10-16T19:16:18.43
IV.SMA1.EHE. ML:1 7.2601395E-5 0.2432 AML other m 2021-10-16T19:16:21.61
IV.SMA1.EHN. ML:0.7 3.5426505E-5 0.1408 AML other m 2021-10-16T19:16:21.77
IV.FIAM.HHE. ML:0.2 1.1377824E-5 1.2544 AML other m 2021-10-16T19:16:22.95
IV.FIAM.HHN. ML:0.2 9.404109E-6 1.7664 AML other m 2021-10-16T19:16:22.98
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