Earthquake with magnitude of ML 1.0 on date 12-10-2021 and time 23:59:14 (UTC) in region 9 km SW Pietracamela (TE)

A magnitude ML 1.0 earthquake occured in region: 9 km SW Pietracamela (TE), on

  • 12-10-2021 23:59:14 (UTC)
  • 13-10-2021 01:59:14 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.46, 13.483 at 1 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
Pietracamela TE 9 271 271
Crognaleto TE 10 1297 1568
Fano Adriano TE 11 296 1864
L'Aquila AQ 14 69753 71617
Campotosto AQ 14 542 72159
Isola del Gran Sasso d'Italia TE 16 4773 76932
Pizzoli AQ 16 4326 81258
Poggio Picenze AQ 16 1136 82394
Capitignano AQ 16 665 83059
Barete AQ 17 737 83796
Tossicia TE 17 1406 85202
Barisciano AQ 17 1828 87030
Cortino TE 18 656 87686
Montorio al Vomano TE 18 8218 95904
Fossa AQ 18 721 96625
Colledara TE 18 2179 98804
Santo Stefano di Sessanio AQ 19 111 98915
Castelli TE 19 1159 100074
Sant'Eusanio Forconese AQ 19 394 100468
Ocre AQ 20 1167 101635
San Demetrio ne' Vestini AQ 20 1854 103489

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km NE of L'Aquila (69753 inhabitants)
29 Km SW of Teramo (54892 inhabitants)
55 Km W of Montesilvano (53738 inhabitants)
58 Km W of Chieti (51815 inhabitants)
60 Km W of Pescara (121014 inhabitants)
69 Km E of Terni (111501 inhabitants)
79 Km NE of Tivoli (56533 inhabitants)
81 Km NE of Guidonia Montecelio (88673 inhabitants)
84 Km SE of Foligno (57155 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 2021-10-12
23:59:14
42.4598 13.4833 1 2021-10-13
01:20:28
Sala Sismica INGV-Roma 96483371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-12 23:59:14 ± 0.18
Latitude 42.4598 ± 0.0081
Longitude 13.4833 ± 0.0073
Depth (km) 1 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96483371

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 970
Semi-minor axis of confidence ellipse (meter) 530
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 195
Circular confidence region, given by single value of horizontal uncertainty (meter) 970
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 180
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.18526
Epicentral distance of station farthest from the epicenter (degree) 0.2716
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 96483371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-13 01:20:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VCEL.EHZ. 2021-10-12T23:59:25.29 0.1 undecidable manual S 104 0.2716 92 0.33 93
IV.SMA1.EHZ. 2021-10-12T23:59:22.58 0.1 undecidable manual S 327 0.2023 93 0.28 95
IV.RM33.EHZ. 2021-10-12T23:59:22.38 0.1 undecidable manual S 284 0.2041 93 0.01 100
IV.TERO.HHZ. 2021-10-12T23:59:21.54 0.1 undecidable manual S 29 0.1853 94 -0.11 98
IV.VCEL.EHZ. 2021-10-12T23:59:20.01 0.6 negative manual P 104 0.2716 92 -0.53 44
IV.RM33.EHZ. 2021-10-12T23:59:18.86 0.6 positive manual P 284 0.2041 93 -0.18 48
IV.TERO.HHZ. 2021-10-12T23:59:18.23 1.0 undecidable manual P 29 0.1853 94 -0.4 23
IV.SMA1.EHZ. 2021-10-12T23:59:18.75 1.0 positive manual P 327 0.2023 93 -0.25 24
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.1 3.055E-5 0.14 AML other m 2021-10-12T23:59:30.62
IV.NRCA.HHN. ML:1 2.65E-5 0.48 AML other m 2021-10-12T23:59:31.15
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