Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 20-06-2021 and time 13:50:49 (UTC) in region 1 km NE Rieti (RI)

A magnitude ML 0.9 earthquake occured in region: 1 km NE Rieti (RI), on

  • 20-06-2021 13:50:49 (UTC)
  • 20-06-2021 15:50:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.4110, 12.8700 at 10 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
Rieti RI 1 47698 47698
Cantalice RI 7 2755 50453
Cittaducale RI 7 6828 57281
Contigliano RI 8 3783 61064
Greccio RI 10 1558 62622
Poggio Bustone RI 10 2055 64677
Belmonte in Sabina RI 10 636 65313
Monte San Giovanni in Sabina RI 12 714 66027
Rivodutri RI 12 1253 67280
Colli sul Velino RI 12 533 67813
Morro Reatino RI 13 373 68186
Castel Sant'Angelo RI 13 1308 69494
Concerviano RI 14 291 69785
Labro RI 14 374 70159
Cottanello RI 15 563 70722
Montenero Sabino RI 15 299 71021
Borgo Velino RI 16 972 71993
Montasola RI 16 395 72388
Rocca Sinibalda RI 16 815 73203
Micigliano RI 16 127 73330
Torricella in Sabina RI 17 1342 74672
Longone Sabino RI 17 597 75269
Antrodoco RI 17 2588 77857
Poggio San Lorenzo RI 18 589 78446
Roccantica RI 18 563 79009
Casperia RI 18 1246 80255
Casaprota RI 18 744 80999
Leonessa RI 19 2435 83434
Configni RI 19 633 84067
Vacone RI 19 256 84323
Poggio Catino RI 19 1341 85664
Polino TR 20 233 85897
Stroncone TR 20 4917 90814
Monteleone Sabino RI 20 1224 92038
Salisano RI 20 567 92605

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km SE of Terni (111501 inhabitants)
44 Km W of L'Aquila (69753 inhabitants)
47 Km N of Guidonia Montecelio (88673 inhabitants)
50 Km N of Tivoli (56533 inhabitants)
62 Km S of Foligno (57155 inhabitants)
63 Km E of Viterbo (67173 inhabitants)
66 Km NE of Roma (2864731 inhabitants)
74 Km W of Teramo (54892 inhabitants)
81 Km N of Velletri (53303 inhabitants)
87 Km SE of Perugia (166134 inhabitants)
88 Km NE of Pomezia (62966 inhabitants)
88 Km NE of Fiumicino (78395 inhabitants)
93 Km N of Aprilia (73446 inhabitants)
95 Km E of Civitavecchia (52991 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 0.9 2021-06-20
13:50:49		 42.4112 12.8703 10 2021-12-29
11:12:30		 Bollettino Sismico Italiano INGV 95511811
Reviewed
Rev100 		ML 0.8 2021-06-20
13:50:50		 42.4225 12.8748 10 2021-06-20
13:59:10		 Sala Sismica INGV-Roma 91602411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-06-20 13:50:49 ± 0.07
Latitude 42.4112 ± 0.0027
Longitude 12.8703 ± 0.0061
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 95511811

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 419
Semi-minor axis of confidence ellipse (meter) 314
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 285
Circular confidence region, given by single value of horizontal uncertainty (meter) 420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 165
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.46945
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 91602411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-06-20 13:59:10

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 95511811
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-09-16 15:08:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SARZ.HHZ. 2021-06-20T13:52:40.46 3.0 undecidable manual Sg 5.86 0
GU.BURY.HHZ. 2021-06-20T13:52:38.90 3.0 undecidable manual Sn -2.11 0
IV.CADC.EHZ. 2021-06-20T13:52:36.85 3.0 undecidable manual Sg 4.42 0
IV.SGAL.EHZ. 2021-06-20T13:52:34.12 3.0 undecidable manual Sn 0.94 0
GU.RNCA.HHZ. 2021-06-20T13:52:26.74 3.0 undecidable manual Sn -1.08 0
SI.BOSI.HHZ. 2021-06-20T13:52:08.24 3.0 positive manual Pg 13.17 0
IV.AGLI.HHZ. 2021-06-20T13:52:02.66 3.0 undecidable manual Sn -7.88 0
CR.ZAG.BHZ. 2021-06-20T13:52:00.88 3.0 undecidable manual Pg 7.12 0
IV.BRSN.EHZ. 2021-06-20T13:51:52.52 3.0 undecidable manual Sg -0.25 0
IV.SERS.HHZ. 2021-06-20T13:51:50.83 3.0 negative manual Pn -3.36 0
GU.RNCA.HHZ. 2021-06-20T13:51:48.42 3.0 positive manual Pg 4.88 0
IV.MTGR.HHZ. 2021-06-20T13:51:48.46 3.0 undecidable manual Pn -4.83 0
IV.ZEN8.EHZ. 2021-06-20T13:51:44.52 3.0 negative manual Pn -1.17 0
IV.VOBA.EHZ. 2021-06-20T13:51:43.64 3.0 positive manual Pn -3.03 0
IV.SARZ.HHZ. 2021-06-20T13:51:42.20 3.0 negative manual Pn -5.15 0
IV.CAR1.HNZ. 2021-06-20T13:51:42.81 3.0 undecidable manual Pn -5.76 0
IV.SENI.HNZ. 2021-06-20T13:51:33.32 3.0 undecidable manual S -5.05 0
IV.RIBO.EHZ.01 2021-06-20T13:51:30.12 3.0 undecidable manual S -5.88 0
IV.POFI.HHZ. 2021-06-20T13:51:20.77 3.0 undecidable manual S 1.46 0
IV.LPEL.HHZ. 2021-06-20T13:51:08.35 3.0 positive manual P -0.74 0
IV.NRCA.HHZ. 2021-06-20T13:51:06.46 0.6 undecidable manual S 23 50.9157 50 0.24 46
IV.CERT.HNN. 2021-06-20T13:51:06.34 0.6 undecidable manual S 170 52.1034 50 -0.19 47
IV.GAVE.EHZ. 2021-06-20T13:51:00.80 0.3 undecidable manual S 4 31.2465 50 -0.17 73
IV.RM33.EHZ. 2021-06-20T13:51:00.77 0.3 undecidable manual S 69 30.1476 50 0.08 75
IV.NRCA.HHZ. 2021-06-20T13:50:59.31 0.3 undecidable manual P 23 50.9157 50 -0.01 73
IV.LNSS.HHZ. 2021-06-20T13:50:59.31 0.3 undecidable manual S 33 25.3524 111 -0.04 76
IV.CERT.HNN. 2021-06-20T13:50:59.61 0.3 undecidable manual P 170 52.1034 50 0.11 71
IV.ARRO.EHZ. 2021-06-20T13:50:57.78 0.3 undecidable manual S 335 20.4684 116 -0.01 77
IV.RM33.EHZ. 2021-06-20T13:50:56.18 0.1 undecidable manual P 69 30.1476 50 0.05 100
IV.GAVE.EHZ. 2021-06-20T13:50:56.24 0.3 undecidable manual P 4 31.2465 50 -0.05 75
IV.LNSS.HHZ. 2021-06-20T13:50:55.20 0.3 undecidable manual P 33 25.3524 111 -0.16 74
IV.ARRO.EHZ. 2021-06-20T13:50:54.64 0.3 undecidable manual P 335 20.4684 116 0.19 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHN. ML:0.5 0.000024586745 0.16 AML other m 2021-06-20T13:50:57.17
IV.ARRO.EHE. ML:0.7 0.000034165185 0.16 AML other m 2021-06-20T13:50:58.48
IV.LNSS.HHN. ML:1.1 0.0000807 0.6 AML other m 2021-06-20T13:50:59.74
IV.LNSS.HHE. ML:1.0 0.00005804395499999999 0.0768 AML other m 2021-06-20T13:50:59.94
IV.RM33.EHE. ML:0.7 0.00002745 1.38 AML other m 2021-06-20T13:51:01.77
IV.GAVE.EHE. ML:1.1 0.000052699999999999993 0.24 AML other m 2021-06-20T13:51:01.09
IV.GAVE.EHN. ML:1.0 0.0000442 0.54 AML other m 2021-06-20T13:51:01.36
IV.RM33.EHN. ML:0.6 0.00002155 1.14 AML other m 2021-06-20T13:51:01.34
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