Earthquake with magnitude of ML 2.1 on date 11-09-2021 and time 22:49:30 (UTC) in region 1 km NW Premilcuore (FC)

A magnitude ML 2.1 earthquake occured in region: 1 km NW Premilcuore (FC), on

  • 11-09-2021 22:49:30 (UTC)
  • 12-09-2021 00:49:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.9840, 11.7720 at 8 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Premilcuore FC 1 799 799
Portico e San Benedetto FC 5 756 1555
Rocca San Casciano FC 10 1910 3465
Tredozio FC 11 1212 4677
Galeata FC 11 2516 7193
Santa Sofia FC 12 4136 11329
Civitella di Romagna FC 14 3786 15115
San Godenzo FI 14 1167 16282
Marradi FI 16 3139 19421
Dovadola FC 18 1653 21074
Modigliana FC 19 4560 25634

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km SW of Forlì (117913 inhabitants)
35 Km S of Faenza (58541 inhabitants)
41 Km W of Cesena (96758 inhabitants)
41 Km S of Imola (69797 inhabitants)
48 Km NE of Firenze (382808 inhabitants)
54 Km E of Scandicci (50609 inhabitants)
55 Km E of Prato (191150 inhabitants)
58 Km N of Arezzo (99543 inhabitants)
59 Km SW of Ravenna (159116 inhabitants)
64 Km W of Rimini (147750 inhabitants)
66 Km SE of Bologna (386663 inhabitants)
69 Km E of Pistoia (90315 inhabitants)
82 Km NE of Siena (53903 inhabitants)
92 Km W of Pesaro (94582 inhabitants)
96 Km S of Ferrara (133155 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 2.1 2021-09-11
22:49:30
43.9837 11.7723 8 2022-03-30
13:04:12
Bollettino Sismico Italiano INGV 96796681
Reviewed
Rev100
ML 2.1 2021-09-11
22:49:30
43.9793 11.7672 9 2021-09-11
22:56:42
Sala Sismica INGV-Roma 95319811
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-11 22:49:30 ± 0.07
Latitude 43.9837 ± 0.0045
Longitude 11.7723 ± 0.0050
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96796681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 528
Semi-minor axis of confidence ellipse (meter) 100
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 224
Circular confidence region, given by single value of horizontal uncertainty (meter) 530.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 117
Number of associated phases, regardless of their use for origin computation 46
Number of defining phases 40
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.36247
Number of stations at which the event was observed 34
Number of stations from which data was used for origin computation 29
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 54
Type of magnitude ML
Reference to an origin 95319811
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-11 22:56:42

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 52
Type of magnitude ML
Reference to an origin 96796681
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-07 16:03:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VCRE.HHZ. 2021-09-11T22:51:21.91 3.0 undecidable manual Sg 9.75 0
IV.PTRJ.HNZ. 2021-09-11T22:51:16.77 3.0 undecidable manual Sg 14.64 0
GU.MGRO.HHZ. 2021-09-11T22:51:03.20 3.0 undecidable manual Sg 12.35 0
IV.LAV9.HHZ. 2021-09-11T22:50:39.27 3.0 undecidable manual Sn -0.52 0
GU.MGRO.HHZ. 2021-09-11T22:50:27.79 3.0 undecidable manual Pg 12.33 0
IV.ZEN8.EHZ. 2021-09-11T22:50:03.10 3.0 undecidable manual Pg 1.92 0
IV.MML1.EHZ. 2021-09-11T22:49:54.18 0.3 undecidable manual P 135 136.4634 50 1.13 41
IV.CASP.HHZ. 2021-09-11T22:49:54.93 0.3 undecidable manual P 209 151.2375 50 -0.39 53
IV.MGAB.HHZ. 2021-09-11T22:49:51.36 0.3 undecidable manual P 167 121.8891 50 0.55 54
IV.CRMI.HHZ. 2021-09-11T22:49:51.84 0.6 undecidable manual S 252 66.7776 50 0.69 38
IV.ATCC.EHZ. 2021-09-11T22:49:49.68 0.3 undecidable manual P 141 112.6983 50 0.29 59
IV.SSP9.EHZ. 2021-09-11T22:49:48.05 0.6 undecidable manual S 148 53.8017 50 0.35 43
IV.PII.HHZ. 2021-09-11T22:49:48.26 0.3 undecidable manual P 254 103.9182 50 0.22 61
IV.PARC.HHZ. 2021-09-11T22:49:47.50 0.6 undecidable manual S 135 52.7028 50 0.1 46
IV.MOCL.EHZ. 2021-09-11T22:49:46.25 0.6 undecidable manual S 273 47.3193 50 0.29 45
IV.MPAG.EHZ. 2021-09-11T22:49:45.67 0.3 undecidable manual P 116 88.245 50 0.05 65
IV.ATVO.HHZ. 2021-09-11T22:49:44.73 0.3 undecidable manual P 142 83.9493 50 -0.22 63
IV.ATMI.HHZ. 2021-09-11T22:49:44.64 0.3 undecidable manual P 151 82.251 50 -0.06 66
IV.CRE.HHZ. 2021-09-11T22:49:44.74 0.6 undecidable manual S 160 42.9237 50 -0.06 47
GU.POPM.HHZ. 2021-09-11T22:49:44.75 0.3 undecidable manual P 275 81.3519 50 0.2 64
IV.ATPI.EHZ. 2021-09-11T22:49:43.64 0.3 undecidable manual P 139 77.7666 50 -0.36 62
IV.CAFI.HHZ. 2021-09-11T22:49:43.51 0.3 undecidable manual P 168 74.2701 50 0.05 67
IV.CSNT.HHZ. 2021-09-11T22:49:42.75 0.3 undecidable manual P 214 68.5758 50 0.16 66
IV.PE3.EHZ. 2021-09-11T22:49:42.50 0.3 undecidable manual P 119 66.0894 50 0.29 65
IV.SEI.HHZ. 2021-09-11T22:49:42.39 0.6 undecidable manual S 284 33.9438 103 0.07 48
IV.OSSC.HHZ. 2021-09-11T22:49:42.22 0.3 undecidable manual P 220 66.1893 50 -0.01 68
IV.CRMI.HHZ. 2021-09-11T22:49:42.41 0.1 undecidable manual P 252 66.7776 50 0.1 89
IV.VISG.HHZ. 2021-09-11T22:49:42.71 0.6 undecidable manual S 310 35.2425 50 -0.05 48
IV.BRIS.HHZ. 2021-09-11T22:49:40.51 0.6 undecidable manual S 359 26.751 107 0.6 43
IV.MPPT.EHZ. 2021-09-11T22:49:40.33 0.1 undecidable manual P 267 54.501 50 -0.1 92
IV.FNVD.HHZ. 2021-09-11T22:49:40.53 0.3 undecidable manual P 292 55.6998 50 -0.07 69
IV.PARC.HHZ. 2021-09-11T22:49:39.66 0.1 undecidable manual P 135 52.7028 50 -0.48 85
IV.MOCL.EHZ. 2021-09-11T22:49:39.14 0.1 undecidable manual P 273 47.3193 50 -0.17 91
IV.SSP9.EHZ. 2021-09-11T22:49:39.98 0.3 undecidable manual P 148 53.8017 50 -0.33 65
IV.RUFI.EHE. 2021-09-11T22:49:39.88 0.6 undecidable manual S 233 26.5512 107 0.05 49
IV.MTRZ.HNZ. 2021-09-11T22:49:39.57 0.3 undecidable manual P 323 45.8208 50 0.49 64
IV.IMOL.EHZ. 2021-09-11T22:49:38.25 0.3 undecidable manual P 357 41.7249 50 -0.21 69
IV.ASQU.HHZ. 2021-09-11T22:49:38.11 0.6 undecidable manual S 176 20.7681 111 0.15 48
IV.CRE.HHZ. 2021-09-11T22:49:38.16 0.1 positive manual P 160 42.9237 50 -0.48 86
IV.VISG.HHZ. 2021-09-11T22:49:36.90 0.1 undecidable manual P 310 35.2425 50 -0.56 85
IV.SEI.HHZ. 2021-09-11T22:49:36.85 0.1 undecidable manual P 284 33.9438 103 -0.36 90
IV.RUFI.EHE. 2021-09-11T22:49:35.74 0.1 undecidable manual P 233 26.5512 107 -0.03 98
IV.BRIS.HHZ. 2021-09-11T22:49:35.84 0.1 undecidable manual P 359 26.751 107 0.03 98
IV.SFI.HNZ. 2021-09-11T22:49:34.87 0.6 undecidable manual S 146 10.5783 127 0.03 50
IV.ASQU.HHZ. 2021-09-11T22:49:34.72 0.1 positive manual P 176 20.7681 111 0.03 98
IV.SFI.HNZ. 2021-09-11T22:49:32.93 0.1 undecidable manual P 146 10.5783 127 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SFI.HNN. ML:2.6 0.005984999999999999 0.46 AML other m 2021-09-11T22:49:35.01
IV.SFI.EHN. ML:2.6 0.006199999999999999 0.44 AML other m 2021-09-11T22:49:35.02
IV.SFI.EHE. ML:2.6 0.006275 0.1 AML other m 2021-09-11T22:49:35.07
IV.SFI.HNE. ML:2.6 0.006425 0.08 AML other m 2021-09-11T22:49:35.07
IV.ASQU.HHE. ML:2.5 0.0021950000000000003 0.14 AML other m 2021-09-11T22:49:38.70
IV.BRIS.HHE. ML:2.8 0.003985 0.32 AML other m 2021-09-11T22:49:40.80
IV.ASQU.HHN. ML:2.2 0.001085 0.8 AML other m 2021-09-11T22:49:41.67
IV.BRIS.HHN. ML:2.8 0.00342 0.8 AML other m 2021-09-11T22:49:41.92
IV.SEI.HHE. ML:2.6 0.0019100000000000002 0.26 AML other m 2021-09-11T22:49:42.86
IV.SEI.HHN. ML:2.8 0.0029699999999999996 0.38 AML other m 2021-09-11T22:49:42.88
IV.VISG.HHN. ML:1.9 0.00030649999999999997 0.72 AML other m 2021-09-11T22:49:44.27
IV.CRE.HHN. ML:2.6 0.001355 0.38 AML other m 2021-09-11T22:49:45.21
IV.CRE.HHE. ML:2.1 0.00039200000000000004 0.26 AML other m 2021-09-11T22:49:45.77
IV.VISG.HHE. ML:1.6 0.0001635 0.74 AML other m 2021-09-11T22:49:45.82
IV.MOCL.EHE. ML:2.1 0.0003275 0.64 AML other m 2021-09-11T22:49:46.54
IV.MOCL.EHN. ML:2.1 0.0003525 0.82 AML other m 2021-09-11T22:49:47.41
IV.IMOL.HNE. ML:2.5 0.0011275 0.28 AML other m 2021-09-11T22:49:47.91
IV.IMOL.HNN. ML:2.6 0.001435 0.86 AML other m 2021-09-11T22:49:48.81
IV.MPPT.EHN. ML:2.2 0.0004185 1.16 AML other m 2021-09-11T22:49:49.10
IV.SSP9.EHE. ML:1.8 0.00015900000000000002 0.42 AML other m 2021-09-11T22:49:49.16
IV.MPPT.EHE. ML:1.9 0.00019800000000000002 0.3 AML other m 2021-09-11T22:49:49.31
IV.SSP9.EHN. ML:2.0 0.0002185 0.76 AML other m 2021-09-11T22:49:50.45
IV.PARC.HHE. ML:1.7 0.000135 0.68 AML other m 2021-09-11T22:49:50.83
IV.PARC.HHN. ML:2.0 0.0002235 0.6 AML other m 2021-09-11T22:49:52.25
IV.CRMI.HHE. ML:1.9 0.000129 0.44 AML other m 2021-09-11T22:49:52.50
IV.CRMI.HHN. ML:2.3 0.00033150000000000003 0.72 AML other m 2021-09-11T22:49:52.27
IV.FNVD.HHN. ML:2.1 0.0003155 1.44 AML other m 2021-09-11T22:49:52.22
IV.OSSC.HHE. ML:2.1 0.00021100000000000003 1.4 AML other m 2021-09-11T22:49:53.83
IV.PE3.EHE. ML:2.2 0.0002735 0.46 AML other m 2021-09-11T22:49:53.14
IV.CSNT.HHE. ML:1.8 0.00010800000000000001 0.42 AML other m 2021-09-11T22:49:55.60
IV.PE3.EHN. ML:2.1 0.000251 1.5 AML other m 2021-09-11T22:49:55.87
IV.OSSC.HHN. ML:2.0 0.0001995 1.26 AML other m 2021-09-11T22:49:56.85
IV.CSNT.HHN. ML:2.0 0.000161 1.16 AML other m 2021-09-11T22:49:56.39
IV.ATPI.EHN. ML:1.7 0.00008165 1.28 AML other m 2021-09-11T22:49:56.28
IV.CAFI.HHN. ML:1.8 0.00010899999999999999 0.5 AML other m 2021-09-11T22:49:57.40
IV.FNVD.HHE. ML:2.1 0.00029549999999999997 0.56 AML other m 2021-09-11T22:49:57.44
GU.POPM.HHN. ML:2.1 0.00017999999999999998 0.3 AML other m 2021-09-11T22:49:57.40
IV.CAFI.HHE. ML:2.0 0.000158 0.54 AML other m 2021-09-11T22:49:58.31
GU.POPM.HHE. ML:1.9 0.0001095 0.74 AML other m 2021-09-11T22:49:59.76
IV.ATMI.HHN. ML:2.3 0.00027749999999999997 0.52 AML other m 2021-09-11T22:49:59.67
IV.ATMI.HHE. ML:2.2 0.000207 0.32 AML other m 2021-09-11T22:50:01.52
IV.ATVO.HHE. ML:2.0 0.0001395 0.7 AML other m 2021-09-11T22:50:02.63
IV.PII.HHN. ML:2.2 0.000135 0.9 AML other m 2021-09-11T22:50:04.50
IV.ATVO.HHN. ML:1.9 0.00010795000000000001 1.12 AML other m 2021-09-11T22:50:04.76
IV.PII.HHE. ML:2.2 0.00014050000000000003 1.54 AML other m 2021-09-11T22:50:05.17
IV.MGAB.HHN. ML:2.1 0.00008335 1.34 AML other m 2021-09-11T22:50:08.10
IV.MPAG.EHN. ML:1.7 0.00005365 0.48 AML other m 2021-09-11T22:50:09.45
IV.ATCC.EHN. ML:2.1 0.0000969 0.36 AML other m 2021-09-11T22:50:10.57
IV.ATCC.EHE. ML:2.2 0.00011949999999999999 0.66 AML other m 2021-09-11T22:50:11.53
IV.ATPI.EHE. ML:1.7 0.0000756 0.48 AML other m 2021-09-11T22:50:12.16
IV.MGAB.HHE. ML:2.3 0.000142 0.76 AML other m 2021-09-11T22:50:12.95
IV.MPAG.EHE. ML:1.6 0.0000504 1.5 AML other m 2021-09-11T22:50:14.77
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
Waveforms Seismic signals in miniseed + resp format Download