Earthquake with magnitude of ML 1.0 on date 01-09-2021 and time 20:20:54 (Italy) in region 6 km E San Biagio Saracinisco (FR)

A magnitude ML 1.0 earthquake occured in region: 6 km E San Biagio Saracinisco (FR), on

  • 01-09-2021 18:20:54 (UTC)
  • 01-09-2021 20:20:54 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.6, 13.994 at 8 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
San Biagio Saracinisco FR 6 349 349
Scapoli IS 6 680 1029
Acquafondata FR 7 263 1292
Filignano IS 8 648 1940
Rocchetta a Volturno IS 8 1113 3053
Vallerotonda FR 8 1581 4634
Pizzone IS 8 329 4963
Viticuso FR 9 353 5316
Castel San Vincenzo IS 9 516 5832
Colli a Volturno IS 9 1349 7181
Montaquila IS 11 2456 9637
Cerro al Volturno IS 11 1281 10918
Pozzilli IS 11 2380 13298
Conca Casale IS 12 200 13498
Picinisco FR 12 1218 14716
Fornelli IS 12 1909 16625
Sant'Elia Fiumerapido FR 13 6166 22791
Villa Latina FR 13 1241 24032
Venafro IS 13 11280 35312
Settefrati FR 14 728 36040
Montenero Val Cocchiara IS 14 538 36578
Cervaro FR 15 8109 44687
Macchia d'Isernia IS 15 1035 45722
Belmonte Castello FR 15 739 46461
Acquaviva d'Isernia IS 15 425 46886
Alfedena AQ 16 864 47750
San Vittore del Lazio FR 16 2636 50386
Atina FR 16 4316 54702
Scontrone AQ 17 574 55276
San Pietro Infine CE 17 944 56220
Monteroduni IS 17 2264 58484
Gallinaro FR 17 1269 59753
Rionero Sannitico IS 18 1118 60871
Barrea AQ 18 726 61597
Cassino FR 18 36142 97739
Terelle FR 19 422 98161
Forlì del Sannio IS 19 675 98836
Civitella Alfedena AQ 19 296 99132
Capriati a Volturno CE 19 1541 100673
San Donato Val di Comino FR 19 2107 102780
Isernia IS 19 21842 124622

Municipalities with at least 50000 inhabitants

An earthquake occurred to
65 Km NW of Caserta (76326 inhabitants)
72 Km N of Aversa (53047 inhabitants)
77 Km N of Giugliano in Campania (122974 inhabitants)
79 Km NW of Acerra (59573 inhabitants)
80 Km N of Marano di Napoli (59874 inhabitants)
80 Km NW of Afragola (65057 inhabitants)
81 Km NW of Casoria (77642 inhabitants)
84 Km NW of Benevento (60091 inhabitants)
84 Km N of Pozzuoli (81661 inhabitants)
85 Km S of Chieti (51815 inhabitants)
87 Km N of Napoli (974074 inhabitants)
91 Km NW of Portici (55274 inhabitants)
92 Km E of Latina (125985 inhabitants)
93 Km NW of Ercolano (53709 inhabitants)
96 Km NW of Torre del Greco (86275 inhabitants)
97 Km SE of L'Aquila (69753 inhabitants)
98 Km S of Pescara (121014 inhabitants)
Recent and historical seismicity
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
Reviewed
Rev100
ML 1.0 2021-09-01
18:20:54
41.5995 13.9937 8 2021-09-01
18:26:12
Sala Sismica INGV-Roma 94928201
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-01 18:20:54 ± 0.13
Latitude 41.5995 ± 0.0099
Longitude 13.9937 ± 0.0096
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 94928201

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 898
Semi-minor axis of confidence ellipse (meter) 839
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 36
Circular confidence region, given by single value of horizontal uncertainty (meter) 900
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 95
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.01889
Epicentral distance of station farthest from the epicenter (degree) 0.41729
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 94928201
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-01 18:26:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VVLD.HHZ. 2021-09-01T18:21:08.76 0.6 undecidable manual S 314 0.3867 50 -0.26 46
IV.VAGA.HHZ. 2021-09-01T18:21:04.70 0.6 undecidable manual S 136 0.2572 105 0.02 50
IV.INTR.HNZ. 2021-09-01T18:21:03.58 0.1 undecidable manual P 351 0.4173 50 0.21 93
IV.MIDA.HHZ. 2021-09-01T18:21:02.38 0.6 undecidable manual S 78 0.1988 110 -0.15 49
IV.VVLD.HHZ. 2021-09-01T18:21:02.39 0.6 positive manual P 314 0.3867 50 -0.45 44
IV.RNI2.HHZ. 2021-09-01T18:21:01.93 1.0 undecidable manual S 49 0.1574 114 0.88 20
IV.POFI.HHZ. 2021-09-01T18:21:00.00 0.1 undecidable manual P 299 0.241 106 0.01 100
IV.VAGA.HHZ. 2021-09-01T18:21:00.35 0.6 positive manual P 136 0.2572 105 0.02 50
IV.RNI2.HHZ. 2021-09-01T18:20:58.70 0.6 undecidable manual P 49 0.1574 114 0.47 46
IV.MIDA.HHZ. 2021-09-01T18:20:58.84 0.6 positive manual P 78 0.1988 110 -0.25 48
IV.MCI.EHZ. 2021-09-01T18:20:58.89 0.1 undecidable manual P 231 0.1736 112 0.33 95
IV.CERA.HHZ. 2021-09-01T18:20:55.44 0.3 undecidable manual P 95 0.0189 165 -0.59 68
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MIDA.HHE. ML:1 6.305E-5 1.16 AML other m 2021-09-01T18:21:02.35
IV.RNI2.HHN. ML:1.2 0.00012935 0.2 AML other m 2021-09-01T18:21:03.90
IV.MIDA.HHN. ML:1 6.995E-5 1.34 AML other m 2021-09-01T18:21:04.06
IV.VAGA.HHE. ML:0.8 3.38E-5 1.32 AML other m 2021-09-01T18:21:05.95
IV.VVLD.HHN. ML:1.1 3.935E-5 0.5 AML other m 2021-09-01T18:21:09.39
IV.VAGA.HHN. ML:1.3 9.355E-5 0.44 AML other m 2021-09-01T18:21:10.28
IV.VVLD.HHE. ML:1.2 4.9E-5 0.4 AML other m 2021-09-01T18:21:10.39
IV.RNI2.HHE. ML:0.8 4.79E-5 0.62 AML other m 2021-09-01T18:21:10.57
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