Earthquake with magnitude of ML 1.0 on date 24-01-2021 and time 21:50:22 (Italy) in region 4 km SE Cantalice (RI)

A magnitude ML 1.0 earthquake occured in region: 4 km SE Cantalice (RI), on

  • 24-01-2021 20:50:22 (UTC)
  • 24-01-2021 21:50:22 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.44, 12.93 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
Cantalice RI 4 2755 2755
Cittaducale RI 6 6828 9583
Rieti RI 6 47698 57281
Poggio Bustone RI 8 2055 59336
Castel Sant'Angelo RI 10 1308 60644
Micigliano RI 11 127 60771
Rivodutri RI 11 1253 62024
Borgo Velino RI 11 972 62996
Morro Reatino RI 13 373 63369
Antrodoco RI 13 2588 65957
Greccio RI 13 1558 67515
Concerviano RI 13 291 67806
Belmonte in Sabina RI 13 636 68442
Contigliano RI 14 3783 72225
Colli sul Velino RI 14 533 72758
Leonessa RI 14 2435 75193
Labro RI 15 374 75567
Posta RI 17 694 76261
Monte San Giovanni in Sabina RI 17 714 76975
Rocca Sinibalda RI 18 815 77790
Polino TR 18 233 78023
Longone Sabino RI 18 597 78620
Borbona RI 19 617 79237
Montenero Sabino RI 20 299 79536
Petrella Salto RI 20 1197 80733
Torricella in Sabina RI 20 1342 82075

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km SE of Terni (111501 inhabitants)
40 Km W of L'Aquila (69753 inhabitants)
51 Km NE of Guidonia Montecelio (88673 inhabitants)
54 Km N of Tivoli (56533 inhabitants)
61 Km SE of Foligno (57155 inhabitants)
68 Km E of Viterbo (67173 inhabitants)
68 Km W of Teramo (54892 inhabitants)
71 Km NE of Roma (2864731 inhabitants)
84 Km N of Velletri (53303 inhabitants)
87 Km SE of Perugia (166134 inhabitants)
92 Km NE of Pomezia (62966 inhabitants)
93 Km NE of Fiumicino (78395 inhabitants)
96 Km N of Aprilia (73446 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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 2021-01-24
20:50:22
42.44 12.93 8 2021-01-24
21:00:49
Sala Sismica INGV-Roma 86543961
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-24 20:50:22 ± 0.09
Latitude 42.44 ± 0.00
Longitude 12.93 ± 0.01
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86543961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 482
Semi-minor axis of confidence ellipse (meter) 241
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 55
Circular confidence region, given by single value of horizontal uncertainty (meter) 480
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 89
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) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.18616
Epicentral distance of station farthest from the epicenter (degree) 0.41998
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 20
Type of magnitude ML
Reference to an origin 86543961
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-24 21:00:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2021-01-24T20:50:37.64 0.3 undecidable manual S 19 0.42 50 -0.39 67
IV.SMA1.EHZ. 2021-01-24T20:50:36.33 0.3 undecidable manual S 57 0.357 50 0.16 71
IV.CESX.HHN. 2021-01-24T20:50:34.63 0.6 undecidable manual S 304 0.3049 104 0.03 49
IV.GAVE.EHE. 2021-01-24T20:50:32.44 0.3 undecidable manual S 354 0.2572 106 -0.39 69
IV.RM33.EHZ. 2021-01-24T20:50:31.91 0.3 undecidable manual S 71 0.223 109 0.31 71
IV.FIAM.HHZ. 2021-01-24T20:50:31.06 0.3 undecidable manual S 140 0.2185 109 -0.37 70
IV.NRCA.HHZ. 2021-01-24T20:50:31.16 0.1 undecidable manual P 19 0.42 50 -0.32 91
IV.CESX.HHN. 2021-01-24T20:50:30.04 0.1 undecidable manual P 304 0.3049 104 0.54 88
IV.ARRO.EHZ. 2021-01-24T20:50:30.06 0.3 undecidable manual S 320 0.1862 112 -0.19 73
IV.LNSS.HHZ. 2021-01-24T20:50:30.36 0.3 undecidable manual S 26 0.1862 112 0.12 75
IV.SMA1.EHZ. 2021-01-24T20:50:30.37 0.1 undecidable manual P 57 0.357 50 -0.04 98
IV.GAVE.EHE. 2021-01-24T20:50:28.49 0.1 undecidable manual P 354 0.2572 106 0.02 100
IV.FIAM.HHZ. 2021-01-24T20:50:27.60 0.1 undecidable manual P 140 0.2185 109 -0.06 100
IV.RM33.EHZ. 2021-01-24T20:50:27.89 0.1 undecidable manual P 71 0.223 109 0.13 98
IT.MMP1.HGN. 2021-01-24T20:50:27.89 0.3 undecidable manual P 215 0.2293 108 0 76
IV.ARRO.EHZ. 2021-01-24T20:50:27.11 0.1 undecidable manual P 320 0.1862 112 0.12 99
IV.LNSS.HHZ. 2021-01-24T20:50:27.20 0.3 undecidable manual P 26 0.1862 112 0.22 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHE. ML:0.9 6.17846795E-5 0.2816 AML other m 2021-01-24T20:50:30.44
IV.ARRO.EHN. ML:1 7.7250395E-5 0.2816 AML other m 2021-01-24T20:50:30.75
IV.LNSS.HHE. ML:1 8.2101275E-5 0.0896 AML other m 2021-01-24T20:50:31.19
IV.LNSS.HHN. ML:1 6.891214E-5 0.2048 AML other m 2021-01-24T20:50:31.48
IV.LNSS.HNE. ML:1 7.462556E-5 0 AML other m 2021-01-24T20:50:30.71
IV.LNSS.HNN. ML:1.1 8.69306355E-5 0.4992 AML other m 2021-01-24T20:50:30.71
IV.FIAM.HHE. ML:0.4 1.3774785E-5 0.1024 AML other m 2021-01-24T20:50:31.24
IV.FIAM.HHN. ML:0.5 1.760816E-5 0.1792 AML other m 2021-01-24T20:50:31.40
IV.FIAM.HNE. ML:2 0.0006687646 0.5504 AML other m 2021-01-24T20:50:31.71
IV.FIAM.HNN. ML:1 7.1208345E-5 0.4224 AML other m 2021-01-24T20:50:31.45
IV.RM33.EHE. ML:0.9 4.490837E-5 0.2816 AML other m 2021-01-24T20:50:32.32
IV.RM33.EHN. ML:0.8 3.7265688E-5 0.6656 AML other m 2021-01-24T20:50:31.84
IV.RM33.HNE. ML:1 6.11726E-5 0.256 AML other m 2021-01-24T20:50:32.44
IV.RM33.HNN. ML:1.2 9.430852E-5 0.4608 AML other m 2021-01-24T20:50:32.27
IV.SMA1.EHE. ML:1.1 4.0845575E-5 0.6144 AML other m 2021-01-24T20:50:36.72
IV.SMA1.EHN. ML:0.8 2.35677995E-5 0.6016 AML other m 2021-01-24T20:50:36.77
IV.NRCA.HNE. ML:1.5 8.734991E-5 0.6656 AML other m 2021-01-24T20:50:38.15
IV.NRCA.HNN. ML:1.3 5.695699E-5 0.7936 AML other m 2021-01-24T20:50:37.50
IV.NRCA.HHE. ML:1.2 4.4903475E-5 0.1536 AML other m 2021-01-24T20:50:38.14
IV.NRCA.HHN. ML:0.8 1.9089683E-5 0.256 AML other m 2021-01-24T20:50:37.77
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download