Earthquake with magnitude of ML 2.1 on date 09-05-2021 and time 16:49:20 (UTC) in region 4 km NE Configni (RI)

A magnitude ML 2.1 earthquake occured in region: 4 km NE Configni (RI), on

  • 09-05-2021 16:49:20 (UTC)
  • 09-05-2021 18:49:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.449, 12.677 at 8 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Configni RI 4 633 633
Cottanello RI 5 563 1196
Stroncone TR 6 4917 6113
Montasola RI 7 395 6508
Vacone RI 8 256 6764
Greccio RI 8 1558 8322
Contigliano RI 9 3783 12105
Colli sul Velino RI 10 533 12638
Calvi dell'Umbria TR 10 1856 14494
Torri in Sabina RI 11 1256 15750
Montebuono RI 11 883 16633
Casperia RI 12 1246 17879
Tarano RI 12 1444 19323
Terni TR 13 111501 130824
Labro RI 13 374 131198
Roccantica RI 14 563 131761
Selci RI 15 1106 132867
Narni TR 15 19785 152652
Morro Reatino RI 16 373 153025
Monte San Giovanni in Sabina RI 16 714 153739
Cantalupo in Sabina RI 16 1685 155424
Rieti RI 16 47698 203122
Collevecchio RI 16 1577 204699
Otricoli TR 16 1869 206568
Rivodutri RI 17 1253 207821
Arrone TR 17 2763 210584
Poggio Catino RI 17 1341 211925
Forano RI 18 3179 215104
Montefranco TR 18 1276 216380
Poggio Bustone RI 18 2055 218435
Magliano Sabina RI 19 3774 222209
Cantalice RI 19 2755 224964
Stimigliano RI 19 2328 227292

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km S of Terni (111501 inhabitants)
47 Km E of Viterbo (67173 inhabitants)
50 Km N of Guidonia Montecelio (88673 inhabitants)
55 Km N of Tivoli (56533 inhabitants)
57 Km S of Foligno (57155 inhabitants)
60 Km W of L'Aquila (69753 inhabitants)
64 Km N of Roma (2864731 inhabitants)
77 Km SE of Perugia (166134 inhabitants)
83 Km E of Civitavecchia (52991 inhabitants)
83 Km NE of Fiumicino (78395 inhabitants)
85 Km N of Velletri (53303 inhabitants)
88 Km W of Teramo (54892 inhabitants)
88 Km N of Pomezia (62966 inhabitants)
95 Km N of Aprilia (73446 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event *

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event *

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event *

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
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
Bulletin
Rev1000
ML 2.1 2021-05-09
16:49:20
42.4488 12.6767 8 2021-12-29
11:12:05
Bollettino Sismico Italiano INGV 91308621
Reviewed
Rev100
ML 2.1 2021-05-09
16:49:20
42.4513 12.6697 8 2021-05-09
16:55:50
Sala Sismica INGV-Roma 89946411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-09 16:49:20 ± 0.08
Latitude 42.4488 ± 0.0036
Longitude 12.6767 ± 0.0061
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 91308621

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 448
Semi-minor axis of confidence ellipse (meter) 202
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 268
Circular confidence region, given by single value of horizontal uncertainty (meter) 450
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 40
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.16372
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 27
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 46
Type of magnitude ML
Reference to an origin 91308621
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-08-08 23:08:07

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 46
Type of magnitude ML
Reference to an origin 89946411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-09 16:55:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
MN.TRI.HHZ. 2021-05-09T16:51:00.53 3.0 undecidable manual Sg 6.9 0
IV.SNAL.HHZ. 2021-05-09T16:50:40.73 3.0 undecidable manual Sg 9.74 0
IV.FDMO.HHZ. 2021-05-09T16:49:44.12 0.6 undecidable manual S 27 0.6601 50 0.53 40
IV.NARO.HHZ. 2021-05-09T16:49:43.28 0.6 undecidable manual P 357 1.1637 50 0.68 34
IV.CESI.HHZ. 2021-05-09T16:49:41.90 0.6 undecidable manual S 17 0.5801 50 0.67 39
IV.LRP.EHZ. 2021-05-09T16:49:41.75 3.0 undecidable manual P 0.49 0
IV.ASSB.HHZ. 2021-05-09T16:49:40.67 0.6 undecidable manual S 359 0.5936 50 -0.95 34
IV.SMA1.EHZ. 2021-05-09T16:49:40.00 0.6 undecidable manual S 69 0.518 50 0.62 40
IV.CERT.HHZ. 2021-05-09T16:49:40.50 0.6 undecidable manual S 156 0.5486 50 0.22 44
IV.ATMI.HHZ. 2021-05-09T16:49:39.20 0.3 undecidable manual P 341 0.9344 50 0.52 57
IV.EL6.EHZ. 2021-05-09T16:49:38.82 0.1 positive manual P 19 0.9335 50 0.16 83
IV.NRCA.HHZ. 2021-05-09T16:49:38.80 0.3 undecidable manual S 40 0.5009 50 -0.09 69
IV.MURB.HHZ. 2021-05-09T16:49:37.24 0.3 undecidable manual P 352 0.8211 50 0.49 59
IV.RM33.EHZ. 2021-05-09T16:49:36.08 0.6 undecidable manual S 81 0.4011 50 0.17 46
IV.MF5.EHZ. 2021-05-09T16:49:36.51 0.6 undecidable manual P 47 0.7878 50 0.34 41
IV.MOMA.HHZ. 2021-05-09T16:49:35.00 0.6 undecidable manual S 348 0.3633 50 0.2 46
IV.CSP1.EHZ. 2021-05-09T16:49:35.48 0.3 undecidable manual P 31 0.75 50 -0.05 66
IV.FIAM.HHZ. 2021-05-09T16:49:35.10 0.3 undecidable manual S 119 0.3723 50 0.04 72
IV.ATCC.EHZ. 2021-05-09T16:49:35.51 0.3 undecidable manual P 358 0.7365 50 0.22 64
IV.TERO.HHZ. 2021-05-09T16:49:34.50 0.3 undecidable manual P 75 0.7042 50 -0.25 64
IV.MGAB.HHZ. 2021-05-09T16:49:33.24 0.3 undecidable manual P 318 0.6223 50 -0.1 67
IV.FDMO.HHZ. 2021-05-09T16:49:33.76 0.1 negative manual P 27 0.6601 50 -0.23 87
IV.MC2.EHZ. 2021-05-09T16:49:32.80 0.3 undecidable manual P 39 0.5963 50 -0.1 68
IV.CESI.HHZ. 2021-05-09T16:49:32.49 0.1 negative manual P 17 0.5801 50 -0.14 90
IV.LNSS.HHZ. 2021-05-09T16:49:32.90 0.3 undecidable manual S 60 0.3085 103 -0.19 70
IV.ASSB.HHZ. 2021-05-09T16:49:32.64 0.1 undecidable manual P 359 0.5936 50 -0.21 88
IV.CERT.HHZ. 2021-05-09T16:49:32.02 0.6 undecidable manual P 156 0.5486 50 -0.06 46
IV.GAVE.EHZ. 2021-05-09T16:49:32.50 0.6 undecidable manual S 33 0.2914 104 0.08 48
IV.SMA1.EHZ. 2021-05-09T16:49:31.55 0.1 undecidable manual P 69 0.518 50 -0.01 93
IV.NRCA.HHZ. 2021-05-09T16:49:30.99 0.1 negative manual P 40 0.5009 50 -0.29 89
IV.FIAM.HHZ. 2021-05-09T16:49:29.05 0.1 undecidable manual P 119 0.3723 50 -0.01 96
IV.MTCE.HHZ. 2021-05-09T16:49:29.84 0.3 undecidable manual P 173 0.429 50 -0.19 69
IV.RM33.EHZ. 2021-05-09T16:49:29.40 0.1 undecidable manual P 81 0.4011 50 -0.16 93
IT.GNU.HGE. 2021-05-09T16:49:28.66 0.3 undecidable manual P 348 0.3633 50 -0.25 69
IV.CESX.HHZ. 2021-05-09T16:49:28.30 0.6 undecidable manual S 337 0.1727 112 0.23 48
IV.MOMA.HHZ. 2021-05-09T16:49:28.30 0.1 negative manual P 348 0.3633 50 -0.61 83
IV.ARRO.EHZ. 2021-05-09T16:49:27.18 0.3 undecidable manual S 27 0.1457 116 0.05 75
IV.LNSS.HHZ. 2021-05-09T16:49:27.75 0.1 negative manual P 60 0.3085 103 -0.17 94
IV.GAVE.EHZ. 2021-05-09T16:49:27.32 0.3 undecidable manual P 33 0.2914 104 -0.22 70
IV.SRES.HHN. 2021-05-09T16:49:26.59 0.1 undecidable manual P 210 0.2446 106 0.04 98
IT.MMP1.HGE. 2021-05-09T16:49:25.92 0.1 undecidable manual P 165 0.2068 109 0.19 96
IV.CESX.HHZ. 2021-05-09T16:49:25.02 0.1 negative manual P 337 0.1727 112 -0.01 100
IV.ARRO.EHZ. 2021-05-09T16:49:24.74 0.1 negative manual P 27 0.1457 116 0.25 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHE. ML:2.2 0.001705 0.72 AML other m 2021-05-09T16:49:28.19
IV.ARRO.EHN. ML:2.4 0.00217 0.22 AML other m 2021-05-09T16:49:28.80
IV.CESX.HHE. ML:2.2 0.00143 0.34 AML other m 2021-05-09T16:49:33.52
IV.CESX.HHN. ML:2.3 0.00154 1.68 AML other m 2021-05-09T16:49:33.07
IV.LNSS.HHE. ML:2.3 0.000822 0.48 AML other m 2021-05-09T16:49:33.75
IV.GAVE.EHN. ML:2.4 0.00106 0.68 AML other m 2021-05-09T16:49:34.98
IV.GAVE.HNN. ML:2 0.000423 0.7 AML other m 2021-05-09T16:49:34.63
IV.GAVE.HNE. ML:2.2 0.0007955 0.98 AML other m 2021-05-09T16:49:35.28
IV.GAVE.EHE. ML:2.2 0.0008065 0.98 AML other m 2021-05-09T16:49:35.28
IV.MOMA.HNE. ML:2.2 0.0005725 0.42 AML other m 2021-05-09T16:49:35.68
IV.MOMA.HHE. ML:2.2 0.00059 0.42 AML other m 2021-05-09T16:49:35.69
IV.LNSS.HHN. ML:2.2 0.000696 0.32 AML other m 2021-05-09T16:49:35.64
IV.RM33.EHE. ML:2.1 0.0003845 1.1 AML other m 2021-05-09T16:49:37.03
IV.RM33.EHN. ML:2 0.000299 0.72 AML other m 2021-05-09T16:49:37.30
IV.NRCA.HHE. ML:2.2 0.0003325 0.14 AML other m 2021-05-09T16:49:39.52
IV.SMA1.EHE. ML:2.2 0.0003685 0.4 AML other m 2021-05-09T16:49:40.52
IV.NRCA.HHN. ML:2 0.0002385 0.54 AML other m 2021-05-09T16:49:41.61
IV.MOMA.HNN. ML:2 0.000355 0.3 AML other m 2021-05-09T16:49:41.83
IV.MOMA.HHN. ML:2 0.0003725 0.28 AML other m 2021-05-09T16:49:41.84
IV.CESI.HHE. ML:2.2 0.0002875 1.66 AML other m 2021-05-09T16:49:42.05
IV.CERT.HHE. ML:1.6 9.125E-5 0.34 AML other m 2021-05-09T16:49:43.69
IV.SMA1.EHN. ML:2.2 0.0003135 0.36 AML other m 2021-05-09T16:49:43.59
IV.CESI.HHN. ML:2.2 0.0003265 0.24 AML other m 2021-05-09T16:49:44.26
IV.CERT.HHN. ML:1.7 0.000109 0.78 AML other m 2021-05-09T16:49:44.53
IV.FDMO.HHN. ML:2 0.000155 0.26 AML other m 2021-05-09T16:49:44.55
IV.FDMO.HHE. ML:2.1 0.0001885 0.28 AML other m 2021-05-09T16:49:44.68
IV.MGAB.HHN. ML:2 0.0001655 0.84 AML other m 2021-05-09T16:49:46.31
IV.MGAB.HHE. ML:2 0.000175 0.42 AML other m 2021-05-09T16:49:46.77
IV.ASSB.HHE. ML:2 0.0001845 0.52 AML other m 2021-05-09T16:49:47.10
IV.ASSB.HHN. ML:1.9 0.000134 1.62 AML other m 2021-05-09T16:49:48.99
IV.TERO.HHN. ML:1.8 9.46E-5 0.46 AML other m 2021-05-09T16:49:49.31
IV.ATCC.EHN. ML:2.1 0.0001545 0.5 AML other m 2021-05-09T16:49:49.60
IV.ATCC.EHE. ML:2.2 0.000219 0.46 AML other m 2021-05-09T16:49:51.84
IV.MURB.HHN. ML:2.3 0.0002375 1.22 AML other m 2021-05-09T16:49:52.16
IV.TERO.HHE. ML:1.7 7.475E-5 0.82 AML other m 2021-05-09T16:49:52.38
IV.CSP1.EHN. ML:2.4 0.00031 1.5 AML other m 2021-05-09T16:49:52.08
IV.MURB.HHE. ML:2.5 0.000392 0.36 AML other m 2021-05-09T16:49:54.06
IV.CSP1.EHE. ML:2.3 0.0002705 0.72 AML other m 2021-05-09T16:49:54.67
IV.EL6.EHE. ML:2.2 0.0001655 0.82 AML other m 2021-05-09T16:49:54.28
IV.ATMI.HHE. ML:2.3 0.0001805 0.4 AML other m 2021-05-09T16:49:57.66
IV.ATMI.HHN. ML:2.3 0.0002015 1.14 AML other m 2021-05-09T16:49:57.63
IV.EL6.EHN. ML:2.2 0.0001565 1.48 AML other m 2021-05-09T16:49:59.04
IV.LRP.EHN. ML:1.6 2.855E-5 0.74 AML other m 2021-05-09T16:50:06.51
IV.NARO.HHN. ML:1.6 2.355E-5 0.48 AML other m 2021-05-09T16:50:08.46
IV.LRP.EHE. ML:2.1 9.46E-5 0.84 AML other m 2021-05-09T16:50:10.11
IV.NARO.HHE. ML:1.6 2.29E-5 0.58 AML other m 2021-05-09T16:50:11.39
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions *

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, http://terremoti.ingv.it/tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in miniseed + resp format Download