Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 03-07-2021 and time 17:59:37 (UTC) in region 2 km NE Rocca di Botte (AQ)

A magnitude ML 1.8 earthquake occured in region: 2 km NE Rocca di Botte (AQ), on

  • 03-07-2021 17:59:37 (UTC)
  • 03-07-2021 19:59:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.0390, 13.0870 at 9 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
Rocca di Botte AQ 2 856 856
Pereto AQ 3 682 1538
Camerata Nuova RM 3 447 1985
Oricola AQ 4 1244 3229
Arsoli RM 6 1586 4815
Cervara di Roma RM 6 455 5270
Carsoli AQ 7 5396 10666
Marano Equo RM 7 779 11445
Agosta RM 8 1765 13210
Riofreddo RM 8 781 13991
Roviano RM 8 1351 15342
Anticoli Corrado RM 9 915 16257
Vallinfreda RM 9 283 16540
Vivaro Romano RM 10 182 16722
Cineto Romano RM 10 601 17323
Rocca Canterano RM 11 196 17519
Canterano RM 11 351 17870
Collalto Sabino RI 11 442 18312
Saracinesco RM 12 185 18497
Sante Marie AQ 12 1166 19663
Subiaco RM 13 9074 28737
Turania RI 13 241 28978
Nespolo RI 13 246 29224
Mandela RM 13 917 30141
Sambuci RM 14 925 31066
Cerreto Laziale RM 14 1118 32184
Gerano RM 14 1263 33447
Tagliacozzo AQ 14 6889 40336
Ciciliano RM 15 1336 41672
Rocca Santo Stefano RM 15 975 42647
Roccagiovine RM 16 263 42910
Licenza RM 16 1011 43921
Collegiove RI 16 213 44134
Percile RM 16 255 44389
Orvinio RI 16 405 44794
Vicovaro RM 16 4019 48813
Cappadocia AQ 16 528 49341
Pozzaglia Sabina RI 17 360 49701
Affile RM 17 1548 51249
Vallepietra RM 17 283 51532
Arcinazzo Romano RM 18 1348 52880
Pisoniano RM 18 770 53650
Jenne RM 18 366 54016
Bellegra RM 18 2887 56903
Roiate RM 18 737 57640
Paganico Sabino RI 18 172 57812
Ascrea RI 19 234 58046
San Vito Romano RM 19 3273 61319
Castel Madama RM 19 7399 68718
Pescorocchiano RI 19 2075 70793

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km E of Tivoli (56533 inhabitants)
30 Km E of Guidonia Montecelio (88673 inhabitants)
43 Km SW of L'Aquila (69753 inhabitants)
47 Km NE of Velletri (53303 inhabitants)
52 Km E of Roma (2864731 inhabitants)
61 Km NE of Aprilia (73446 inhabitants)
63 Km NE of Pomezia (62966 inhabitants)
65 Km N of Latina (125985 inhabitants)
69 Km SE of Terni (111501 inhabitants)
76 Km NE of Anzio (54211 inhabitants)
76 Km E of Fiumicino (78395 inhabitants)
86 Km SW of Teramo (54892 inhabitants)
91 Km E of Viterbo (67173 inhabitants)
96 Km W of Chieti (51815 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 1.8 2021-07-03
17:59:37		 42.0387 13.0868 9 2021-12-29
11:12:14		 Bollettino Sismico Italiano INGV 93176561
Reviewed
Rev100 		ML 1.7 2021-07-03
17:59:37		 42.0402 13.0858 9 2021-07-03
18:10:04		 Sala Sismica INGV-Roma 92201771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-03 17:59:37 ± 0.06
Latitude 42.0387 ± 0.0027
Longitude 13.0868 ± 0.0048
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 93176561

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 390
Semi-minor axis of confidence ellipse (meter) 164
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 123
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 51
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
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) 0.06205
Epicentral distance of station farthest from the epicenter (degree) 0.58996
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 19
Type of magnitude ML
Reference to an origin 92201771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-03 18:10:04

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 93176561
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-07-25 02:26:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
MN.AQU.HNZ. 2021-07-03T17:59:52.96 0.6 undecidable manual S 37 43.623 50 0.58 42
IV.GUAR.HNZ. 2021-07-03T17:59:49.81 0.6 undecidable manual S 145 32.8449 50 0.31 46
IV.ARRO.EHZ. 2021-07-03T17:59:49.36 1.0 undecidable manual P 336 65.49 50 -0.19 22
IV.MTCE.HHZ. 2021-07-03T17:59:48.27 0.6 undecidable manual S 267 28.4493 107 0.23 47
IV.T0110.HHZ. 2021-07-03T17:59:48.71 0.6 undecidable manual P 69 60.495 50 -0.07 46
IV.RM33.EHZ. 2021-07-03T17:59:47.44 0.6 undecidable manual P 11 53.2023 50 -0.21 45
IV.PTQR.HHZ. 2021-07-03T17:59:47.47 0.3 undecidable manual S 94 25.9518 108 0.28 70
IV.FIAM.HHZ. 2021-07-03T17:59:47.46 0.3 undecidable manual S 6 25.5522 109 0.38 68
IV.GIUL.HHZ. 2021-07-03T17:59:47.60 0.1 undecidable manual P 165 55.1004 50 -0.34 87
MN.AQU.HNZ. 2021-07-03T17:59:46.11 0.6 undecidable manual P 37 43.623 50 -0.07 47
IV.RCAV.EHZ. 2021-07-03T17:59:46.95 0.3 undecidable manual S 209 24.2535 110 0.3 70
IT.MMP1.HGE. 2021-07-03T17:59:45.29 0.6 undecidable manual P 310 36.3414 50 0.23 47
IV.GUAR.HNZ. 2021-07-03T17:59:44.38 0.3 undecidable manual P 145 32.8449 50 -0.14 71
IV.PTQR.HHZ. 2021-07-03T17:59:43.01 0.1 undecidable manual P 94 25.9518 108 -0.18 96
IV.CERT.HHZ. 2021-07-03T17:59:43.28 0.6 undecidable manual S 221 13.1757 123 0.09 49
IV.FIAM.HHZ. 2021-07-03T17:59:43.05 0.1 undecidable manual P 6 25.5522 109 -0.07 98
IV.MTCE.HHZ. 2021-07-03T17:59:43.53 0.3 undecidable manual P 267 28.4493 107 -0.14 72
IV.RCAV.EHZ. 2021-07-03T17:59:42.82 0.1 undecidable manual P 209 24.2535 110 -0.05 98
IT.CSO1.HGZ. 2021-07-03T17:59:41.19 0.6 undecidable manual S 1 6.8931 141 -0.36 48
IV.CERT.HHZ. 2021-07-03T17:59:40.92 0.1 positive manual P 221 13.1757 123 0.05 100
IT.CSO1.HGZ. 2021-07-03T17:59:39.73 0.1 undecidable manual P 1 6.8931 141 -0.2 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CERT.HNN. ML:1.9 0.0009710719999999999 1.5136 AML other m 2021-07-03T17:59:43.81
IV.CERT.HHN. ML:2.0 0.0010315348499999998 0.256 AML other m 2021-07-03T17:59:44.26
IV.CERT.HNE. ML:2.0 0.0012318115000000001 1.7312 AML other m 2021-07-03T17:59:45.97
IV.CERT.HHE. ML:1.8 0.0007308616 1.744 AML other m 2021-07-03T17:59:45.98
IV.FIAM.HNN. ML:2.2 0.0010728095 1.2448 AML other m 2021-07-03T17:59:48.75
IV.FIAM.HHN. ML:2.0 0.000597 1.22 AML other m 2021-07-03T17:59:48.15
IV.MTCE.HHE. ML:1.9 0.00040849999999999995 0.44 AML other m 2021-07-03T17:59:48.56
IV.MTCE.HHN. ML:1.6 0.00019250000000000002 0.44 AML other m 2021-07-03T17:59:49.23
IV.FIAM.HNE. ML:2.4 0.001459683 1.168 AML other m 2021-07-03T17:59:50.21
IV.FIAM.HHE. ML:1.8 0.0003607957 1.36 AML other m 2021-07-03T17:59:51.19
IV.RM33.HNN. ML:1.8 0.0001707094 0.576 AML other m 2021-07-03T17:59:58.46
IV.RM33.EHN. ML:1.9 0.0001895 0.58 AML other m 2021-07-03T17:59:58.17
IV.RM33.HNE. ML:1.9 0.00019433715000000002 1.0528 AML other m 2021-07-03T17:59:59.57
IV.RM33.EHE. ML:1.7 0.0001308519 1.0784 AML other m 2021-07-03T17:59:59.58
IV.T0110.HHN. ML:1.8 0.0001415 0.82 AML other m 2021-07-03T18:00:00.23
IV.ARRO.EHE. ML:1.6 0.0000697 0.42 AML other m 2021-07-03T18:00:02.47
IV.ARRO.EHN. ML:1.6 0.0000717898 1.4368 AML other m 2021-07-03T18:00:02.96
IV.GIUL.HHN. ML:1.5 0.00007747674 0.7584 AML other m 2021-07-03T18:00:03.11
IV.T0110.HHE. ML:1.8 0.0001255 1.36 AML other m 2021-07-03T18:00:05.92
IV.GIUL.HHE. ML:1.5 0.000075534535 0.768 AML other m 2021-07-03T18:00:06.61
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