Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 01-03-2021 and time 05:11:31 (Italy) in region 3 km S Cantalice (RI)

A magnitude ML 1.5 earthquake occured in region: 3 km S Cantalice (RI), on

  • 01-03-2021 04:11:31 (UTC)
  • 01-03-2021 05:11:31 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.44, 12.9 at 10 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.

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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 3 2755 2755
Rieti RI 5 47698 50453
Poggio Bustone RI 7 2055 52508
Cittaducale RI 8 6828 59336
Rivodutri RI 9 1253 60589
Greccio RI 11 1558 62147
Morro Reatino RI 11 373 62520
Contigliano RI 11 3783 66303
Colli sul Velino RI 11 533 66836
Labro RI 12 374 67210
Castel Sant'Angelo RI 12 1308 68518
Micigliano RI 13 127 68645
Belmonte in Sabina RI 14 636 69281
Borgo Velino RI 14 972 70253
Leonessa RI 14 2435 72688
Concerviano RI 15 291 72979
Antrodoco RI 15 2588 75567
Monte San Giovanni in Sabina RI 16 714 76281
Polino TR 16 233 76514
Cottanello RI 18 563 77077
Arrone TR 19 2763 79840
Posta RI 19 694 80534
Montasola RI 19 395 80929
Rocca Sinibalda RI 19 815 81744
Montenero Sabino RI 19 299 82043
Longone Sabino RI 20 597 82640

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km SE of Terni (111501 inhabitants)
43 Km W of L'Aquila (69753 inhabitants)
51 Km N of Guidonia Montecelio (88673 inhabitants)
54 Km N of Tivoli (56533 inhabitants)
59 Km S of Foligno (57155 inhabitants)
65 Km E of Viterbo (67173 inhabitants)
70 Km NE of Roma (2864731 inhabitants)
70 Km W of Teramo (54892 inhabitants)
85 Km N of Velletri (53303 inhabitants)
85 Km SE of Perugia (166134 inhabitants)
92 Km NE of Pomezia (62966 inhabitants)
92 Km NE of Fiumicino (78395 inhabitants)
97 Km N of Aprilia (73446 inhabitants)
99 Km E of Civitavecchia (52991 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 1.5 2021-03-01
04:11:31		 42.44 12.9 10 2021-03-01
04:20:33		 Sala Sismica INGV-Roma 87592691
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-01 04:11:31 ± 0.09
Latitude 42.44 ± 0.00
Longitude 12.90 ± 0.00
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 87592691

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 360
Semi-minor axis of confidence ellipse (meter) 300
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 231
Circular confidence region, given by single value of horizontal uncertainty (meter) 360
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 96
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.55398
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 87592691
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-01 04:20:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-03-01T04:12:02.55 3.0 undecidable manual S 0.58 0
IV.FOSV.EHZ. 2021-03-01T04:11:57.27 3.0 undecidable manual S -3.74 0
IV.CSP1.EHZ. 2021-03-01T04:11:55.60 3.0 undecidable manual S 0.04 0
IV.TERO.HHZ. 2021-03-01T04:11:50.03 0.3 undecidable manual S 71 0.5504 50 -0.34 66
IV.MMO1.EHZ. 2021-03-01T04:11:50.81 0.6 undecidable manual S 35 0.554 50 0.33 44
IV.MOMA.HHZ. 2021-03-01T04:11:47.27 0.6 undecidable manual S 326 0.4326 50 0.38 45
IV.NRCA.HHZ. 2021-03-01T04:11:46.33 0.3 undecidable manual S 22 0.4209 50 -0.21 69
IV.SMA1.EHZ. 2021-03-01T04:11:45.52 0.3 undecidable manual S 60 0.3723 50 0.41 67
IV.CSP1.EHZ. 2021-03-01T04:11:44.99 3.0 undecidable manual P 0.13 0
IV.T1299.EHE. 2021-03-01T04:11:44.70 0.3 undecidable manual S 56 0.3417 50 0.52 66
IV.FDMO.HHZ. 2021-03-01T04:11:43.37 3.0 negative manual P -0.07 0
IV.MMO1.EHZ. 2021-03-01T04:11:42.23 0.3 undecidable manual P 35 0.554 50 -0.19 68
IV.CESX.HHZ. 2021-03-01T04:11:42.07 0.6 undecidable manual S 306 0.2815 50 -0.34 46
IV.TERO.HHZ. 2021-03-01T04:11:42.11 0.3 undecidable manual P 71 0.5504 50 -0.24 67
IV.FIAM.HHZ. 2021-03-01T04:11:41.07 0.3 undecidable manual S 137 0.2392 50 -0.08 74
IV.RM33.EHZ. 2021-03-01T04:11:41.20 0.3 undecidable manual S 74 0.2428 50 -0.06 74
IV.GAVE.EHZ. 2021-03-01T04:11:41.07 0.3 undecidable manual S 359 0.2482 50 -0.35 70
IT.MMP1.HGZ. 2021-03-01T04:11:40.63 0.3 undecidable manual S 210 0.223 50 -0.05 75
IV.MOMA.HHZ. 2021-03-01T04:11:40.38 0.3 undecidable manual P 326 0.4326 50 0.03 72
IV.SMA1.EHZ. 2021-03-01T04:11:39.43 0.1 undecidable manual P 60 0.3723 50 0.11 95
IV.NRCA.HHZ. 2021-03-01T04:11:39.82 0.3 undecidable manual P 22 0.4209 50 -0.32 68
IV.LNSS.HHZ. 2021-03-01T04:11:39.44 0.3 undecidable manual S 33 0.1907 116 -0.11 74
IV.T1299.EHE. 2021-03-01T04:11:38.87 0.3 undecidable manual P 56 0.3417 50 0.09 72
IV.ARRO.EHZ. 2021-03-01T04:11:38.69 0.3 undecidable manual S 324 0.1664 119 -0.03 76
IV.CESX.HHZ. 2021-03-01T04:11:38.29 0.6 undecidable manual P 306 0.2815 50 0.53 44
IV.FIAM.HHZ. 2021-03-01T04:11:37.01 0.3 undecidable manual P 137 0.2392 50 -0.02 75
IV.RM33.EHZ. 2021-03-01T04:11:37.10 0.1 undecidable manual P 74 0.2428 50 0.01 100
IV.GAVE.EHZ. 2021-03-01T04:11:37.18 0.3 undecidable manual P 359 0.2482 50 -0.01 75
IV.LNSS.HHZ. 2021-03-01T04:11:36.12 0.3 undecidable manual P 33 0.1907 116 0.01 76
IT.MMP1.HGZ. 2021-03-01T04:11:36.81 0.1 undecidable manual P 210 0.223 50 0.05 100
IV.ARRO.EHZ. 2021-03-01T04:11:35.80 0.3 undecidable manual P 324 0.1664 119 0.17 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHN. ML:1.2 0.000141 0.32 AML other m 2021-03-01T04:11:38.80
IV.ARRO.EHE. ML:1.4 0.000214 0.22 AML other m 2021-03-01T04:11:39.14
IV.LNSS.HHE. ML:1.7 0.0003535 0.74 AML other m 2021-03-01T04:11:39.96
IV.LNSS.HHN. ML:1.6 0.000265 0.24 AML other m 2021-03-01T04:11:40.13
IV.FIAM.HHN. ML:0.9 4.055E-5 1 AML other m 2021-03-01T04:11:41.39
IV.GAVE.EHN. ML:1.6 0.000219 0.38 AML other m 2021-03-01T04:11:41.46
IV.RM33.HNE. ML:1.7 0.0002685 0.92 AML other m 2021-03-01T04:11:41.99
IV.RM33.EHE. ML:1.4 0.00014978332 0.16 AML other m 2021-03-01T04:11:42.00
IV.RM33.EHN. ML:1.4 0.000118302975 0.1024 AML other m 2021-03-01T04:11:41.60
IV.RM33.HNN. ML:1.5 0.0001855 1.04 AML other m 2021-03-01T04:11:42.08
IV.GAVE.EHE. ML:1.4 0.00013750595 0.3392 AML other m 2021-03-01T04:11:41.51
IV.FIAM.HHE. ML:0.7 2.8928255E-5 0.2816 AML other m 2021-03-01T04:11:42.50
IV.SMA1.EHE. ML:1.7 0.000157 1.84 AML other m 2021-03-01T04:11:46.06
IV.SMA1.EHN. ML:1.3 6.0E-5 1 AML other m 2021-03-01T04:11:46.66
IV.NRCA.HHE. ML:1.5 9.03E-5 0.8 AML other m 2021-03-01T04:11:46.96
IV.MOMA.HHE. ML:1.1 3.44E-5 0.34 AML other m 2021-03-01T04:11:47.41
IV.MOMA.HHN. ML:1.1 3.705E-5 0.14 AML other m 2021-03-01T04:11:49.40
IV.NRCA.HHN. ML:1.2 3.8981645E-5 1.04 AML other m 2021-03-01T04:11:47.16
IV.TERO.HHN. ML:1.7 9.93E-5 0.42 AML other m 2021-03-01T04:11:50.69
IV.TERO.HHE. ML:1.6 7.515E-5 0.14 AML other m 2021-03-01T04:11:50.86
IV.LNSS.HNE. ML:1.7 0.0003531947 0.16 AML other m 2021-03-01T04:11:39.59
IV.LNSS.HNN. ML:1.5 0.00021921415 0.1088 AML other m 2021-03-01T04:11:40.01
IV.GAVE.HNE. ML:1.4 0.00014610445 0.3488 AML other m 2021-03-01T04:11:41.50
IV.NRCA.HNE. ML:1.7 0.000132140555 1.6192 AML other m 2021-03-01T04:11:46.96
IV.CSP1.EHE. ML:1.5 4.41199125E-5 1.0208 AML other m 2021-03-01T04:11:56.70
IV.CSP1.EHN. ML:1.5 4.748E-5 2.0576 AML other m 2021-03-01T04:11:56.48
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