Earthquake with magnitude of ML 1.2 on date 03-11-2021 and time 16:11:48 (UTC) in region 8 km W Portico e San Benedetto (FC)

A magnitude ML 1.2 earthquake occured in region: 8 km W Portico e San Benedetto (FC), on

  • 03-11-2021 16:11:48 (UTC)
  • 03-11-2021 17:11:48 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.018, 11.685 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
Portico e San Benedetto FC 8 756 756
Tredozio FC 8 1212 1968
Marradi FI 9 3139 5107
Premilcuore FC 9 799 5906
San Godenzo FI 11 1167 7073
Rocca San Casciano FC 14 1910 8983
Palazzuolo sul Senio FI 15 1154 10137
Modigliana FC 18 4560 14697
Galeata FC 18 2516 17213
Dicomano FI 19 5515 22728
Santa Sofia FC 20 4136 26864
Vicchio FI 20 8044 34908
Londa FI 20 1840 36748

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km SW of Faenza (58541 inhabitants)
37 Km SW of Forlì (117913 inhabitants)
38 Km S of Imola (69797 inhabitants)
44 Km NE of Firenze (382808 inhabitants)
47 Km W of Cesena (96758 inhabitants)
49 Km E of Prato (191150 inhabitants)
50 Km NE of Scandicci (50609 inhabitants)
60 Km SE of Bologna (386663 inhabitants)
61 Km SW of Ravenna (159116 inhabitants)
62 Km E of Pistoia (90315 inhabitants)
63 Km N of Arezzo (99543 inhabitants)
71 Km W of Rimini (147750 inhabitants)
83 Km NE of Siena (53903 inhabitants)
91 Km S of Ferrara (133155 inhabitants)
92 Km SE of Modena (184973 inhabitants)
97 Km E of Lucca (89046 inhabitants)
99 Km W of Pesaro (94582 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 1.2 2021-11-03
16:11:48
44.0178 11.6848 8 2021-11-03
16:27:46
Sala Sismica INGV-Roma 97206431
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-03 16:11:48 ± 0.08
Latitude 44.0178 ± 0.0018
Longitude 11.6848 ± 0.0025
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 97206431

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 183
Semi-minor axis of confidence ellipse (meter) 174
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 226
Circular confidence region, given by single value of horizontal uncertainty (meter) 180
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 119
Number of associated phases, regardless of their use for origin computation 46
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.08
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.24821
Number of stations at which the event was observed 39
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 2
Type of magnitude ML
Reference to an origin 97206431
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-03 16:27:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MARS.HNZ. 2021-11-03T16:13:35.15 3.0 negative manual Pg 23.219999 0
IX.NSC3.EHZ.02 2021-11-03T16:13:28.96 3.0 undecidable manual Sg 7.67 0
IV.GIZZ.HHZ. 2021-11-03T16:13:23.69 3.0 negative manual Pg 18.469999 0
IX.COL3.HHZ.02 2021-11-03T16:13:20.36 3.0 undecidable manual Sn -6.27 0
IV.CERA.HHZ. 2021-11-03T16:13:07.18 3.0 undecidable manual Sg 11.59 0
IV.MILZ.HHZ. 2021-11-03T16:13:04.06 3.0 undecidable manual Pn -5.9 0
IV.POFI.HNZ. 2021-11-03T16:13:04.00 3.0 undecidable manual Sg 13.29 0
IV.CDRU.HHZ. 2021-11-03T16:12:58.58 3.0 undecidable manual Pg 16.129999 0
IV.SENA.HHZ. 2021-11-03T16:12:58.84 3.0 negative manual Pg 15.49 0
IV.TDS.HHZ. 2021-11-03T16:12:53.62 3.0 undecidable manual Pn -4.19 0
IV.CAPR.HNZ. 2021-11-03T16:12:51.78 3.0 undecidable manual Sg 7.43 0
IV.LAV9.HHZ. 2021-11-03T16:12:49.21 3.0 undecidable manual Sn 1.76 0
OT.OT14.EHZ. 2021-11-03T16:12:42.18 3.0 positive manual Pg 11.03 0
OX.MPRI.HHZ. 2021-11-03T16:12:40.29 3.0 undecidable manual Sg 0.05 0
IV.AGLI.HHZ. 2021-11-03T16:12:40.16 3.0 undecidable manual Pn 2.97 0
IV.RMP.HHZ. 2021-11-03T16:12:39.65 3.0 undecidable manual Sn -4.56 0
IV.SRES.HHZ. 2021-11-03T16:12:38.24 3.0 undecidable manual Sg 4.62 0
IX.RSF3.HHZ.02 2021-11-03T16:12:33.65 3.0 undecidable manual Pn -2.52 0
CH.BERNI.HHZ. 2021-11-03T16:12:23.50 3.0 negative manual Pn -0.16 0
IV.SACR.HHZ. 2021-11-03T16:12:21.08 3.0 undecidable manual Pn -7.48 0
IV.VIVA.HHZ. 2021-11-03T16:12:20.93 3.0 negative manual Pg 3.61 0
IV.FAGN.HHZ. 2021-11-03T16:12:19.58 3.0 negative manual Pg 6.95 0
IV.MF5.EHZ. 2021-11-03T16:12:18.40 3.0 undecidable manual Sn -2.49 0
IV.NDIM.HNZ. 2021-11-03T16:12:17.11 3.0 undecidable manual Sn -2.89 0
IV.SARZ.HHZ. 2021-11-03T16:12:16.66 3.0 positive manual Pn -3.82 0
IV.PP3.EHZ. 2021-11-03T16:12:09.93 3.0 undecidable manual Sn -5.52 0
IV.RIBO.EHZ.01 2021-11-03T16:12:09.27 3.0 undecidable manual Pg 3.56 0
IV.EL6.EHZ. 2021-11-03T16:12:07.97 3.0 undecidable manual S -2.46 0
IV.MC2.EHZ. 2021-11-03T16:12:03.62 3.0 undecidable manual Pg 0.71 0
IV.SEI.HHZ. 2021-11-03T16:11:58.45 0.6 undecidable manual S 279 0.2374 107 0 49
IV.VISG.HHZ. 2021-11-03T16:11:58.89 0.6 undecidable manual S 314 0.2482 107 0.04 48
IV.ASQU.HHZ. 2021-11-03T16:11:58.11 0.6 undecidable manual S 161 0.2338 108 -0.21 47
IV.BOSL.HHE. 2021-11-03T16:11:58.57 0.6 undecidable manual S 249 0.2392 107 0.03 49
IV.RUFI.EHZ. 2021-11-03T16:11:57.83 0.6 undecidable manual S 215 0.2194 109 0.02 49
IV.NARO.HHZ. 2021-11-03T16:11:55.61 3.0 undecidable manual Pg 3.81 0
IV.SFI.EHE. 2021-11-03T16:11:55.85 0.3 undecidable manual S 134 0.1628 115 0.09 73
IV.RUFI.EHZ. 2021-11-03T16:11:54.06 0.1 positive manual P 215 0.2194 109 0.03 98
IV.BOSL.HHE. 2021-11-03T16:11:54.54 0.1 undecidable manual P 249 0.2392 107 0.09 96
IV.SEI.HHZ. 2021-11-03T16:11:54.31 0.3 undecidable manual P 279 0.2374 107 -0.09 72
IV.VISG.HHZ. 2021-11-03T16:11:54.57 0.3 undecidable manual P 314 0.2482 107 -0.06 72
IV.ASQU.HHZ. 2021-11-03T16:11:54.22 0.1 undecidable manual P 161 0.2338 108 -0.11 96
IV.SFI.EHE. 2021-11-03T16:11:52.94 0.1 undecidable manual P 134 0.1628 115 0.09 97
IV.LMD.HHZ. 2021-11-03T16:11:52.53 0.3 undecidable manual S 15 0.0621 140 -0.07 75
IV.LMD.HHZ. 2021-11-03T16:11:51.08 0.1 undecidable manual P 15 0.0621 140 0.05 100
IV.ARVD.HHZ. 2021-11-03T16:11:49.95 3.0 undecidable manual P -4.68 0
IV.CPGN.EHZ. 2021-11-03T16:11:47.93 3.0 undecidable manual P -1.17 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SEI.HHN. ML:1.3 0.000118 1.04 AML other m 2021-11-03T16:11:59.86
IV.SEI.HHE. ML:1.1 6.945E-5 0.68 AML other m 2021-11-03T16:12:00.54
IV.CPGN.HNE. ML:4.5 0.0675 1.6 AML other m 2021-11-03T16:12:08.95
IV.CPGN.HNN. ML:4.6 0.0835 0.42 AML other m 2021-11-03T16:12:09.21
IV.NDIM.HHE. ML:3.6 0.002855 0.08 AML other m 2021-11-03T16:12:19.41
IV.NDIM.HHN. ML:2.9 0.0007405 0.26 AML other m 2021-11-03T16:12:19.44
IV.FAGN.HHE. ML:3.1 0.0002515 0.5 AML other m 2021-11-03T16:12:23.49
IV.FAGN.HHN. ML:2.7 9.72E-5 0.06 AML other m 2021-11-03T16:12:23.53
OX.MPRI.HHN. ML:2.8 0.0001165 1.58 AML other m 2021-11-03T16:12:26.06
OX.MPRI.HHE. ML:2.6 6.27E-5 0.42 AML other m 2021-11-03T16:12:45.63
IX.RSF3.HHN.02 ML:4.5 0.00144 0.96 AML other m 2021-11-03T16:13:23.55
IX.RSF3.HHE.02 ML:4.4 0.0012025 0.48 AML other m 2021-11-03T16:13:24.63
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