Earthquake with magnitude of ML 1.3 on date 07-12-2021 and time 16:11:15 (Italy) in region 4 km E Amatrice (RI)

A magnitude ML 1.3 earthquake occured in region: 4 km E Amatrice (RI), on

  • 07-12-2021 15:11:15 (UTC)
  • 07-12-2021 16:11:15 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.614, 13.336 at 9 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
Amatrice RI 4 2657 2657
Campotosto AQ 7 542 3199
Capitignano AQ 11 665 3864
Accumoli RI 12 667 4531
Montereale AQ 12 2581 7112
Crognaleto TE 14 1297 8409
Cortino TE 14 656 9065
Cittareale RI 14 482 9547
Rocca Santa Maria TE 18 537 10084
Fano Adriano TE 18 296 10380
Arquata del Tronto AP 18 1178 11558
Acquasanta Terme AP 18 2916 14474
Barete AQ 19 737 15211
Valle Castellana TE 19 977 16188
Cagnano Amiterno AQ 19 1369 17557
Pizzoli AQ 20 4326 21883

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km N of L'Aquila (69753 inhabitants)
31 Km W of Teramo (54892 inhabitants)
57 Km E of Terni (111501 inhabitants)
64 Km SE of Foligno (57155 inhabitants)
68 Km W of Montesilvano (53738 inhabitants)
74 Km W of Pescara (121014 inhabitants)
74 Km W of Chieti (51815 inhabitants)
85 Km NE of Guidonia Montecelio (88673 inhabitants)
85 Km NE of Tivoli (56533 inhabitants)
95 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 earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.3 2021-12-07
15:11:15
42.6145 13.3362 9 2021-12-07
15:21:25
Sala Sismica INGV-Roma 98241541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-07 15:11:15 ± 0.05
Latitude 42.6145 ± 0.0027
Longitude 13.3362 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 98241541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 312
Semi-minor axis of confidence ellipse (meter) 279
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 137
Circular confidence region, given by single value of horizontal uncertainty (meter) 310
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 74
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.48653
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 98241541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-07 15:21:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2021-12-07T15:11:43.46 3.0 undecidable manual S -4.03 0
IV.VVLD.HHZ. 2021-12-07T15:11:39.53 3.0 undecidable manual S -0.91 0
IV.NRCA.HHZ. 2021-12-07T15:11:26.58 0.6 undecidable manual S 323 0.2725 50 -0.13 47
IV.CSP1.EHZ. 2021-12-07T15:11:25.72 0.1 undecidable manual P 349 0.4865 50 -0.02 92
IV.TERO.HHZ. 2021-12-07T15:11:23.84 0.3 undecidable manual S 87 0.197 113 -0.14 71
IV.GAVE.EHZ. 2021-12-07T15:11:22.81 0.6 undecidable manual P 284 0.3336 50 -0.31 44
IV.NRCA.HHZ. 2021-12-07T15:11:22.01 0.1 positive manual P 323 0.2725 50 -0.06 95
IV.MC2.EHZ. 2021-12-07T15:11:22.89 0.3 undecidable manual P 340 0.3157 50 0.08 70
IV.MTRA.EHZ. 2021-12-07T15:11:22.39 0.3 undecidable manual S 17 0.1493 119 0.09 73
IV.RM33.EHZ. 2021-12-07T15:11:21.94 0.3 undecidable manual S 220 0.1385 121 -0.01 74
IV.LNSS.HHZ. 2021-12-07T15:11:21.04 0.3 undecidable manual P 267 0.2176 111 0.11 71
IV.CAMP.HHZ. 2021-12-07T15:11:20.51 0.3 undecidable manual S 146 0.0953 131 -0.09 73
IV.TERO.HHZ. 2021-12-07T15:11:20.54 0.1 undecidable manual P 87 0.197 113 0.04 97
IV.MTRA.EHZ. 2021-12-07T15:11:19.71 0.1 undecidable manual P 17 0.1493 119 0.18 95
IV.RM33.EHZ. 2021-12-07T15:11:19.46 0.3 undecidable manual P 220 0.1385 121 0.13 72
IV.SMA1.EHZ. 2021-12-07T15:11:18.68 0.3 undecidable manual S 358 0.0162 169 -0.31 71
IV.CAMP.HHZ. 2021-12-07T15:11:18.67 0.1 negative manual P 146 0.0953 131 0.12 97
IV.SMA1.EHZ. 2021-12-07T15:11:17.66 0.1 undecidable manual P 358 0.0162 169 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:0 0.004055 0.2 AML other m 2021-12-07T15:11:18.86
IV.SMA1.EHN. ML:0 0.002285 1.62 AML other m 2021-12-07T15:11:18.13
IV.CAMP.HHE. ML:1 0.000136 0.66 AML other m 2021-12-07T15:11:20.46
IV.CAMP.HHN. ML:1.1 0.000159 0.52 AML other m 2021-12-07T15:11:20.69
IV.RM33.EHN. ML:1.4 0.0002215 0.32 AML other m 2021-12-07T15:11:22.23
IV.RM33.EHE. ML:1.3 0.0002065 0.28 AML other m 2021-12-07T15:11:23.15
IV.TERO.HHN. ML:1.6 0.000298 0.18 AML other m 2021-12-07T15:11:24.17
IV.TERO.HHE. ML:1.4 0.0001595 0.28 AML other m 2021-12-07T15:11:24.39
IV.NRCA.HHN. ML:1.2 7.675E-5 1.18 AML other m 2021-12-07T15:11:27.71
IV.NRCA.HHE. ML:1.4 0.0001275 0.62 AML other m 2021-12-07T15:11:27.62
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