Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 10-05-2021 and time 00:39:50 (UTC) in region 2 km SE Collalto Sabino (RI)

A magnitude ML 1.4 earthquake occured in region: 2 km SE Collalto Sabino (RI), on

  • 10-05-2021 00:39:50 (UTC)
  • 10-05-2021 02:39:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.1290, 13.0660 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.

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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
Collalto Sabino RI 2 442 442
Nespolo RI 3 246 688
Carsoli AQ 4 5396 6084
Turania RI 5 241 6325
Collegiove RI 6 213 6538
Vivaro Romano RM 6 182 6720
Vallinfreda RM 8 283 7003
Pereto AQ 8 682 7685
Paganico Sabino RI 9 172 7857
Oricola AQ 9 1244 9101
Pozzaglia Sabina RI 9 360 9461
Riofreddo RM 9 781 10242
Ascrea RI 9 234 10476
Arsoli RM 11 1586 12062
Orvinio RI 11 405 12467
Pescorocchiano RI 11 2075 14542
Marcetelli RI 11 89 14631
Rocca di Botte AQ 11 856 15487
Sante Marie AQ 12 1166 16653
Cineto Romano RM 12 601 17254
Camerata Nuova RM 13 447 17701
Castel di Tora RI 13 288 17989
Roviano RM 13 1351 19340
Varco Sabino RI 13 187 19527
Percile RM 13 255 19782
Colle di Tora RI 13 372 20154
Anticoli Corrado RM 15 915 21069
Licenza RM 15 1011 22080
Marano Equo RM 15 779 22859
Cervara di Roma RM 16 455 23314
Borgorose RI 16 4591 27905
Mandela RM 16 917 28822
Fiamignano RI 16 1413 30235
Roccagiovine RM 16 263 30498
Agosta RM 17 1765 32263
Saracinesco RM 17 185 32448
Tagliacozzo AQ 17 6889 39337
Poggio Moiano RI 18 2751 42088
Longone Sabino RI 18 597 42685
Petrella Salto RI 19 1197 43882
Scandriglia RI 19 3108 46990
Sambuci RM 19 925 47915
Vicovaro RM 19 4019 51934
Monteflavio RM 19 1348 53282
Rocca Canterano RM 20 196 53478
Rocca Sinibalda RI 20 815 54293

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NE of Tivoli (56533 inhabitants)
31 Km E of Guidonia Montecelio (88673 inhabitants)
37 Km SW of L'Aquila (69753 inhabitants)
55 Km NE of Velletri (53303 inhabitants)
55 Km E of Roma (2864731 inhabitants)
59 Km SE of Terni (111501 inhabitants)
69 Km NE of Aprilia (73446 inhabitants)
69 Km NE of Pomezia (62966 inhabitants)
75 Km N of Latina (125985 inhabitants)
79 Km SW of Teramo (54892 inhabitants)
79 Km NE of Fiumicino (78395 inhabitants)
84 Km NE of Anzio (54211 inhabitants)
85 Km E of Viterbo (67173 inhabitants)
94 Km W of Chieti (51815 inhabitants)
97 Km SE of Foligno (57155 inhabitants)
99 Km W of Montesilvano (53738 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.4 2021-05-10
00:39:50		 42.1292 13.0663 8 2021-12-29
11:12:25		 Bollettino Sismico Italiano INGV 94965591
Reviewed
Rev100 		ML 1.4 2021-05-10
00:39:51		 42.1197 13.0458 7 2021-05-10
00:45:35		 Sala Sismica INGV-Roma 89953931
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-10 00:39:50 ± 0.08
Latitude 42.1292 ± 0.0045
Longitude 13.0663 ± 0.0073
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 94965591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 650
Semi-minor axis of confidence ellipse (meter) 336
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 122
Circular confidence region, given by single value of horizontal uncertainty (meter) 650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 49
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.03238
Epicentral distance of station farthest from the epicenter (degree) 0.63312
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 89953931
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-10 00:45:35

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 94965591
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-09-02 16:40:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SAMA.EHZ. 2021-05-10T00:40:09.17 0.6 undecidable manual S 225 55.0005 50 0.54 42
IV.VVLD.HHZ. 2021-05-10T00:40:09.11 0.6 undecidable manual S 122 54.2013 50 0.69 39
IV.LNSS.HNZ. 2021-05-10T00:40:07.72 0.6 undecidable manual S 358 52.6029 50 -0.28 45
IV.RM33.HNE. 2021-05-10T00:40:06.10 0.6 undecidable manual S 16 43.8228 50 0.44 44
MN.AQU.HNN. 2021-05-10T00:40:03.73 0.6 undecidable manual S 48 37.3293 50 -0.2 47
IV.POFI.HNE. 2021-05-10T00:40:03.01 0.3 undecidable manual P 130 70.1742 50 -0.42 63
IV.INTR.HHE. 2021-05-10T00:40:03.28 0.3 undecidable manual P 100 70.2741 50 -0.16 66
IV.SMA1.EHN. 2021-05-10T00:40:02.66 0.3 undecidable manual P 22 59.7957 50 0.82 55
IV.ARRO.EHZ. 2021-05-10T00:40:01.08 0.3 undecidable manual P 334 55.6998 50 -0.12 69
IV.GIGS.HHN. 2021-05-10T00:40:01.42 0.6 undecidable manual P 49 55.0005 50 0.33 44
IV.MTCE.HHZ. 2021-05-10T00:40:01.21 0.6 undecidable manual S 246 29.1486 105 -0.06 49
IV.VVLD.HHZ. 2021-05-10T00:40:00.78 0.3 undecidable manual P 122 54.2013 50 -0.19 68
IV.LNSS.HNZ. 2021-05-10T00:40:00.10 0.1 undecidable manual P 358 52.6029 50 -0.62 81
IV.SAMA.EHZ. 2021-05-10T00:40:00.88 0.3 undecidable manual P 225 55.0005 50 -0.21 68
IV.SRES.HHN. 2021-05-10T00:40:00.63 0.3 undecidable manual P 285 47.3193 50 0.73 59
IV.RMP.HHN. 2021-05-10T00:39:59.59 0.3 undecidable manual P 220 46.1205 50 -0.13 70
IV.RM33.HNE. 2021-05-10T00:39:59.08 0.1 undecidable manual P 16 43.8228 50 -0.29 90
IV.GUAR.HNN. 2021-05-10T00:39:59.52 0.3 undecidable manual P 151 42.3243 50 0.38 67
IV.FAGN.HHZ. 2021-05-10T00:39:59.33 0.3 undecidable manual P 70 45.1215 50 -0.24 68
IV.CERT.HHZ. 2021-05-10T00:39:58.70 0.6 undecidable manual S 199 21.1677 110 0.08 49
IV.FIAM.HHZ. 2021-05-10T00:39:57.38 0.6 undecidable manual S 15 15.9729 116 0.42 46
IV.PTQR.HHZ. 2021-05-10T00:39:57.09 0.1 undecidable manual P 113 29.9478 105 0.09 97
MN.AQU.HNN. 2021-05-10T00:39:57.98 0.6 undecidable manual P 48 37.3293 50 -0.4 45
IV.MTCE.HHZ. 2021-05-10T00:39:56.58 0.3 undecidable manual P 246 29.1486 105 -0.26 70
IV.CERT.HHZ. 2021-05-10T00:39:55.31 0.1 undecidable manual P 199 21.1677 110 0 100
IV.FIAM.HHZ. 2021-05-10T00:39:54.60 0.1 undecidable manual P 15 15.9729 116 0.25 96
IT.CSO1.HGZ. 2021-05-10T00:39:53.90 0.6 undecidable manual S 150 3.5964 155 0.11 50
IT.CSO1.HGZ. 2021-05-10T00:39:52.27 0.1 undecidable manual P 150 3.5964 155 -0.25 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CERT.HNN. ML:1.6 0.0002875 1.32 AML other m 2021-05-10T00:39:58.97
IV.CERT.HNE. ML:1.7 0.00037749999999999996 1.64 AML other m 2021-05-10T00:39:58.17
IV.CERT.HHE. ML:1.5 0.0002185 0.34 AML other m 2021-05-10T00:39:59.17
IV.CERT.HHN. ML:1.4 0.0002065 1.42 AML other m 2021-05-10T00:39:59.92
IV.FIAM.HHN. ML:1.3 0.00021 0.68 AML other m 2021-05-10T00:40:00.08
IV.MTCE.HHE. ML:1.3 0.00010899999999999999 0.56 AML other m 2021-05-10T00:40:02.55
IV.MTCE.HHN. ML:1.1 0.00006525 1.04 AML other m 2021-05-10T00:40:04.62
IV.PTQR.HHE. ML:1.1 0.0000653 1.64 AML other m 2021-05-10T00:40:04.11
IV.PTQR.HHN. ML:1.2 0.00006819999999999999 1.28 AML other m 2021-05-10T00:40:06.32
IV.FIAM.HHE. ML:1.3 0.0001855 1.36 AML other m 2021-05-10T00:40:06.83
IV.FAGN.HHN. ML:1.4 0.00008649999999999999 0.78 AML other m 2021-05-10T00:40:10.48
IV.FAGN.HHE. ML:1.6 0.0001245 0.58 AML other m 2021-05-10T00:40:14.34
IV.INTR.HHN. ML:1.3 0.0000322 0.44 AML other m 2021-05-10T00:40:22.60
IV.INTR.HHE. ML:1.3 0.00002855 0.96 AML other m 2021-05-10T00:40:25.80
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