Earthquake with magnitude of ML 1.5 on date 04-11-2021 and time 09:42:54 (Italy) in region 7 km E Bagno di Romagna (FC)

A magnitude ML 1.5 earthquake occured in region: 7 km E Bagno di Romagna (FC), on

  • 04-11-2021 08:42:54 (UTC)
  • 04-11-2021 09:42:54 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.857, 12.064 at 9 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
Bagno di Romagna FC 7 6026 6026
Verghereto FC 8 1907 7933
Sarsina FC 9 3446 11379
Casteldelci RN 10 407 11786
Sant'Agata Feltria RN 12 2151 13937
Mercato Saraceno FC 16 6886 20823
Santa Sofia FC 16 4136 24959
Pennabilli RN 17 2869 27828
Novafeltria RN 19 7164 34992
Talamello RN 19 1104 36096
Badia Tedalda AR 19 1087 37183
Civitella di Romagna FC 20 3786 40969
Galeata FC 20 2516 43485

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km SW of Cesena (96758 inhabitants)
41 Km S of Forlì (117913 inhabitants)
46 Km NE of Arezzo (99543 inhabitants)
46 Km W of Rimini (147750 inhabitants)
50 Km SE of Faenza (58541 inhabitants)
62 Km SE of Imola (69797 inhabitants)
63 Km S of Ravenna (159116 inhabitants)
66 Km E of Firenze (382808 inhabitants)
68 Km W of Pesaro (94582 inhabitants)
72 Km E of Scandicci (50609 inhabitants)
77 Km W of Fano (60888 inhabitants)
78 Km E of Prato (191150 inhabitants)
84 Km NE of Siena (53903 inhabitants)
87 Km NW of Perugia (166134 inhabitants)
91 Km SE of Bologna (386663 inhabitants)
92 Km E of Pistoia (90315 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 1.5 2021-11-04
08:42:54
43.8567 12.0643 9 2021-11-04
08:48:31
Sala Sismica INGV-Roma 97250111
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-04 08:42:54 ± 0.22
Latitude 43.8567 ± 0.0108
Longitude 12.0643 ± 0.0112
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97250111

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1335
Semi-minor axis of confidence ellipse (meter) 342
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 213
Circular confidence region, given by single value of horizontal uncertainty (meter) 1340
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 187
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.7914
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.5
Num. used stations 10
Type of magnitude ML
Reference to an origin 97250111
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-04 08:48:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TST01.HHZ. 2021-11-04T08:44:12.64 3.0 undecidable manual Sn 2.31 0
IV.CDRU.HNZ. 2021-11-04T08:44:05.68 3.0 undecidable manual Pg 8.96 0
IV.TERO.HHZ. 2021-11-04T08:43:50.66 3.0 undecidable manual Sg 5.71 0
OX.MPRI.HHZ. 2021-11-04T08:43:37.01 3.0 negative manual Pn 1.62 0
IV.GAVE.EHZ. 2021-11-04T08:43:33.86 0.6 undecidable manual S -1.89 1.08
IV.VIVA.HHZ. 2021-11-04T08:43:30.13 3.0 negative manual Pn 0.81 0
IV.ROM9.HNZ. 2021-11-04T08:43:26.85 3.0 negative manual Pn -0.83 0
IV.SEI.HHZ. 2021-11-04T08:43:14.36 1.0 undecidable manual S 292 0.545 50 0.98 17
IV.MMUR.HNZ. 2021-11-04T08:43:10.13 0.6 negative manual P 121 0.7914 50 0.58 39
IV.ARVD.HHZ. 2021-11-04T08:43:09.07 1.0 undecidable manual P 119 0.7285 50 0.61 20
IV.RUFI.EHZ. 2021-11-04T08:43:08.86 0.1 undecidable manual S 268 0.4002 50 -0.23 94
IV.CRE.HHZ. 2021-11-04T08:43:05.18 0.1 undecidable manual S 199 0.2509 108 0.68 85
IV.SEI.HHZ. 2021-11-04T08:43:05.44 0.1 undecidable manual P 292 0.545 50 0.12 93
IV.CAFI.HHZ. 2021-11-04T08:43:04.97 0.6 undecidable manual P 188 0.5315 50 -0.13 47
IV.PARC.HHZ. 2021-11-04T08:43:03.99 0.1 undecidable manual S 149 0.2428 109 -0.21 97
IV.ASQU.HHZ. 2021-11-04T08:43:02.81 0.1 undecidable manual S 253 0.2068 112 -0.09 100
IV.RUFI.EHZ. 2021-11-04T08:43:02.38 0.6 positive manual P 268 0.4002 50 -0.47 44
IV.SFI.EHZ. 2021-11-04T08:43:01.52 0.1 undecidable manual S 287 0.1637 116 0.14 100
IV.PARC.HHZ. 2021-11-04T08:42:59.80 0.6 negative manual P 149 0.2428 109 -0.22 48
IV.CRE.HHZ. 2021-11-04T08:42:59.66 0.3 positive manual P 199 0.2509 108 -0.54 67
IV.SFI.EHZ. 2021-11-04T08:42:58.50 0.6 undecidable manual P 287 0.1637 116 0.1 50
IV.ASQU.HHZ. 2021-11-04T08:42:58.95 0.6 positive manual P 253 0.2068 112 -0.33 48
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SFI.EHN. ML:1.3 0.0001645 0.32 AML other m 2021-11-04T08:43:01.72
IV.ASQU.HHN. ML:1.6 0.0002585 0.5 AML other m 2021-11-04T08:43:02.98
IV.ASQU.HHE. ML:1.4 0.0001765 0.28 AML other m 2021-11-04T08:43:03.19
IV.SFI.EHE. ML:1.3 0.0001635 1.56 AML other m 2021-11-04T08:43:03.14
IV.PARC.HHE. ML:1.3 0.0001015 0.94 AML other m 2021-11-04T08:43:04.38
IV.PARC.HHN. ML:1.4 0.0001246 0.76 AML other m 2021-11-04T08:43:06.08
IV.RUFI.EHE. ML:1.6 0.0001113 0.5 AML other m 2021-11-04T08:43:08.89
IV.RUFI.EHN. ML:1.4 8.445E-5 0.42 AML other m 2021-11-04T08:43:13.09
IV.VIVA.HHN. ML:3.9 0.001525 1.4 AML other m 2021-11-04T08:43:32.98
IV.VIVA.HHE. ML:4 0.001815 1.94 AML other m 2021-11-04T08:43:32.02
IV.ROM9.HNE. ML:3.6 0.0009135 0.42 AML other m 2021-11-04T08:44:25.44
IV.ROM9.HNN. ML:3.7 0.001285 1.14 AML other m 2021-11-04T08:44:25.35
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