Earthquake with magnitude of ML 1.0 on date 03-07-2021 and time 17:24:17 (UTC) in region 3 km E Amatrice (RI)

A magnitude ML 1.0 earthquake occured in region: 3 km E Amatrice (RI), on

  • 03-07-2021 17:24:17 (UTC)
  • 03-07-2021 19:24:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.625, 13.325 at 8 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 3 2657 2657
Campotosto AQ 8 542 3199
Accumoli RI 10 667 3866
Capitignano AQ 12 665 4531
Montereale AQ 13 2581 7112
Cittareale RI 14 482 7594
Cortino TE 15 656 8250
Crognaleto TE 15 1297 9547
Arquata del Tronto AP 17 1178 10725
Acquasanta Terme AP 18 2916 13641
Rocca Santa Maria TE 18 537 14178
Valle Castellana TE 19 977 15155
Fano Adriano TE 19 296 15451
Barete AQ 20 737 16188
Cagnano Amiterno AQ 20 1369 17557

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km N of L'Aquila (69753 inhabitants)
31 Km W of Teramo (54892 inhabitants)
56 Km E of Terni (111501 inhabitants)
63 Km SE of Foligno (57155 inhabitants)
69 Km W of Montesilvano (53738 inhabitants)
75 Km W of Pescara (121014 inhabitants)
76 Km W of Chieti (51815 inhabitants)
85 Km NE of Guidonia Montecelio (88673 inhabitants)
85 Km NE of Tivoli (56533 inhabitants)
93 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 2021-07-03
17:24:17
42.6247 13.3253 8 2021-07-03
17:31:42
Sala Sismica INGV-Roma 92198881
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-03 17:24:17 ± 0.06
Latitude 42.6247 ± 0.0027
Longitude 13.3253 ± 0.0037
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 92198881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 350
Semi-minor axis of confidence ellipse (meter) 206
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 58
Circular confidence region, given by single value of horizontal uncertainty (meter) 350
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.00899
Epicentral distance of station farthest from the epicenter (degree) 0.58276
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.3
Num. used stations 17
Type of magnitude ML
Reference to an origin 92198881
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-03 17:31:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2021-07-03T17:24:33.99 0.6 undecidable manual S 337 0.447 50 0.19 45
IV.MOMA.HHZ. 2021-07-03T17:24:29.40 0.1 undecidable manual P 288 0.5828 50 0.22 88
IV.NRCA.HHZ. 2021-07-03T17:24:27.64 0.3 undecidable manual S 323 0.2599 105 -0.1 72
IV.FDMO.HHZ. 2021-07-03T17:24:26.47 0.3 undecidable manual P 337 0.447 50 -0.38 65
IV.TERO.HHZ. 2021-07-03T17:24:25.60 0.3 undecidable manual S 90 0.205 109 -0.1 73
IV.RM33.EHZ. 2021-07-03T17:24:23.38 0.3 undecidable manual S 215 0.1412 116 -0.06 74
IV.NRCA.HHZ. 2021-07-03T17:24:23.18 0.1 undecidable manual P 323 0.2599 105 -0.17 95
IV.MTRA.EHZ. 2021-07-03T17:24:23.60 0.6 undecidable manual S 22 0.1421 116 0.14 49
IV.TERO.HHZ. 2021-07-03T17:24:22.10 0.6 undecidable manual P 90 0.205 109 -0.08 49
IV.CAMP.HHZ. 2021-07-03T17:24:22.20 0.6 undecidable manual S 145 0.1079 123 -0.12 49
IV.MTRA.EHZ. 2021-07-03T17:24:21.10 1.0 undecidable manual P 22 0.1421 116 0.22 24
IV.SMA1.EHZ. 2021-07-03T17:24:20.12 0.6 undecidable manual S 51 0.009 172 0.04 51
IV.T1299.EHN. 2021-07-03T17:24:20.12 0.6 undecidable manual S 287 0.0333 155 -0.23 49
IV.CAMP.HHZ. 2021-07-03T17:24:20.27 0.1 undecidable manual P 145 0.1079 123 0.04 100
IV.RM33.EHZ. 2021-07-03T17:24:20.90 0.3 positive manual P 215 0.1412 116 0.02 75
IV.T1299.EHN. 2021-07-03T17:24:19.23 0.1 undecidable manual P 287 0.0333 155 0.14 99
IV.SMA1.EHZ. 2021-07-03T17:24:19.13 0.1 undecidable manual P 51 0.009 172 0.19 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:0.9 7.3748935E-5 0.1024 AML other m 2021-07-03T17:24:23.66
IV.MTRA.EHN. ML:0.7 4.4731845E-5 0.1152 AML other m 2021-07-03T17:24:23.71
IV.RM33.EHE. ML:0.8 6.854138E-5 0.2304 AML other m 2021-07-03T17:24:24.12
IV.RM33.EHN. ML:0.8 5.5868395E-5 0.1536 AML other m 2021-07-03T17:24:24.37
IV.TERO.HHN. ML:1.1 7.75739E-5 0.0768 AML other m 2021-07-03T17:24:25.74
IV.NRCA.HHN. ML:1 5.365E-5 0.88 AML other m 2021-07-03T17:24:27.92
IV.NRCA.HHE. ML:1 5.31E-5 0.1 AML other m 2021-07-03T17:24:28.04
IV.SMA1.EHE. ML:0 0.001541647 0.2048 AML other m 2021-07-03T17:24:20.24
IV.SMA1.EHN. ML:0 0.0008748325 0.1152 AML other m 2021-07-03T17:24:20.47
IV.RM33.HNE. ML:1.1 0.00011377505 0.6528 AML other m 2021-07-03T17:24:23.08
IV.RM33.HNN. ML:1.1 0.00013237031 1.2544 AML other m 2021-07-03T17:24:29.25
IV.MTRA.HNE. ML:1 0.00010218451 0.8192 AML other m 2021-07-03T17:24:30.88
IV.MTRA.HNN. ML:1.1 0.0001150056 0.6144 AML other m 2021-07-03T17:24:27.49
IV.TERO.HNE. ML:1.4 0.00014859565 0.6784 AML other m 2021-07-03T17:24:27.32
IV.TERO.HNN. ML:1.3 0.0001293553 0.7296 AML other m 2021-07-03T17:24:32.10
IV.NRCA.HNE. ML:1.3 0.00010246184 0.64 AML other m 2021-07-03T17:24:31.60
IV.NRCA.HNN. ML:1.5 0.00015134765 0.4224 AML other m 2021-07-03T17:24:28.17
IV.FDMO.HHE. ML:0.3 5.4752705E-6 0.384 AML other m 2021-07-03T17:24:38.96
IV.FDMO.HHN. ML:0.6 8.2858845E-6 1.1008 AML other m 2021-07-03T17:24:47.56
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