Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 19-12-2021 and time 20:45:04 (Italy) in region 9 km N Finale Emilia (MO)

A magnitude ML 1.8 earthquake occured in region: 9 km N Finale Emilia (MO), on

  • 19-12-2021 19:45:04 (UTC)
  • 19-12-2021 20:45:04 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.9160, 11.2850 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
Finale Emilia MO 9 15699 15699
Felonica MN 9 1359 17058
Sermide MN 10 6189 23247
Calto RO 10 743 23990
Bondeno FE 11 14655 38645
Castelmassa RO 12 4252 42897
Castelnovo Bariano RO 12 2762 45659
Ficarolo RO 12 2438 48097
Magnacavallo MN 13 1561 49658
Ceneselli RO 13 1719 51377
Salara RO 14 1160 52537
San Felice sul Panaro MO 14 10900 63437
Carbonara di Po MN 14 1297 64734
Poggio Rusco MN 15 6625 71359
Sant'Agostino FE 16 6853 78212
Gaiba RO 16 1063 79275
Borgofranco sul Po MN 16 784 80059
Villa Poma MN 16 2023 82082
Bergantino RO 16 2565 84647
San Giovanni del Dosso MN 17 1248 85895
Mirabello FE 17 3266 89161
Mirandola MO 17 23875 113036
Melara RO 18 1803 114839
Camposanto MO 18 3201 118040
Schivenoglia MN 18 1203 119243
Medolla MO 18 6308 125551
Trecenta RO 19 2805 128356
Vigarano Mainarda FE 19 7694 136050
Pieve di Coriano MN 19 1035 137085

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km W of Ferrara (133155 inhabitants)
35 Km E of Carpi (70699 inhabitants)
41 Km NE of Modena (184973 inhabitants)
43 Km W of Rovigo (51867 inhabitants)
47 Km N of Bologna (386663 inhabitants)
57 Km E of Reggio nell'Emilia (171345 inhabitants)
63 Km SE of Verona (258765 inhabitants)
71 Km NW of Imola (69797 inhabitants)
72 Km SW of Padova (210401 inhabitants)
73 Km S of Vicenza (112953 inhabitants)
76 Km E of Parma (192836 inhabitants)
85 Km NW of Faenza (58541 inhabitants)
91 Km NW of Ravenna (159116 inhabitants)
98 Km NW of Forlì (117913 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 2021-12-19
19:45:04		 44.9158 11.285 9 2022-03-30
13:04:35		 Bollettino Sismico Italiano INGV 100590581
Reviewed
Rev100 		ML 1.9 2021-12-19
19:45:04		 44.8578 11.4318 6 2021-12-19
19:58:02		 Sala Sismica INGV-Roma 98732191
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-19 19:45:04 ± 0.25
Latitude 44.9158 ± 0.0072
Longitude 11.2850 ± 0.0165
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 100590581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1367
Semi-minor axis of confidence ellipse (meter) 599
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 107
Circular confidence region, given by single value of horizontal uncertainty (meter) 1370.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 121
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.48
Epicentral distance of station closest to the epicenter (degree) 0.09443
Epicentral distance of station farthest from the epicenter (degree) 1.54773
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 20
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 98732191
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-19 19:58:02

ML:1.8

Field Value
Value 1.8
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 100590581
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-17 17:52:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
ST.ZIAN.EHZ. 2021-12-19T19:45:50.00 1.0 undecidable manual S 8 152.4363 38 -2.3 6
SI.LUSI.HHZ. 2021-12-19T19:45:41.40 0.6 undecidable manual S 347 118.7922 38 -1.75 22
IV.MAGA.HHZ. 2021-12-19T19:45:39.30 0.6 undecidable manual S 332 108.2139 38 -0.98 34
IV.ZEN8.EHZ. 2021-12-19T19:45:36.00 0.6 undecidable manual S 332 90.9423 38 0.41 44
IV.MBAL.EHZ. 2021-12-19T19:45:36.50 0.6 undecidable manual S 339 92.8404 38 0.4 44
SI.KOSI.HHZ. 2021-12-19T19:45:34.66 0.6 undecidable manual P 2 171.7947 38 0.05 38
ST.ZIAN.EHZ. 2021-12-19T19:45:31.77 0.3 undecidable manual P 8 152.4363 38 0.17 61
SI.LUSI.HHZ. 2021-12-19T19:45:26.63 0.3 undecidable manual P 347 118.7922 38 0.26 65
IV.ZOVE.EHZ. 2021-12-19T19:45:25.70 0.6 undecidable manual S 15 61.6938 38 -1.94 21
ST.VARA.EHZ. 2021-12-19T19:45:24.60 0.3 undecidable manual P 343 105.4167 38 0.31 66
IV.SGAL.EHZ. 2021-12-19T19:45:24.58 0.3 undecidable manual P 314 104.6175 38 0.4 65
IV.MAGA.HHZ. 2021-12-19T19:45:24.60 0.3 undecidable manual P 332 108.2139 38 -0.13 68
IV.SALO.HHZ. 2021-12-19T19:45:23.31 0.3 undecidable manual P 323 97.9242 38 0.17 69
OX.BALD.HHZ. 2021-12-19T19:45:23.14 0.3 undecidable manual P 337 92.5407 38 0.84 57
IV.MBAL.EHZ. 2021-12-19T19:45:23.18 0.3 undecidable manual P 339 92.8404 38 0.83 57
IV.ZEN8.EHZ. 2021-12-19T19:45:22.71 0.3 undecidable manual P 332 90.9423 38 0.65 61
IV.VISG.HHZ. 2021-12-19T19:45:21.57 0.3 undecidable manual P 172 81.4518 38 0.99 54
OX.MARN.HNN. 2021-12-19T19:45:21.11 0.6 undecidable manual P 356 80.2641 38 0.71 41
IV.ROVR.HHZ. 2021-12-19T19:45:20.78 0.3 undecidable manual P 348 82.7505 38 0 74
IV.ZCCA.HHZ. 2021-12-19T19:45:19.28 0.3 undecidable manual P 201 67.2771 38 0.91 58
IV.FIU.EHN. 2021-12-19T19:45:17.89 0.6 undecidable manual S 152 34.6431 50 -2.27 16
IV.ZOVE.EHZ. 2021-12-19T19:45:16.71 0.3 undecidable manual P 15 61.6938 38 -0.8 61
IV.TEOL.HHE. 2021-12-19T19:45:16.14 0.6 undecidable manual P 31 58.0974 38 -0.8 41
IV.RAVA.EHE. 2021-12-19T19:45:14.60 0.3 undecidable manual S 216 22.0668 50 -0.05 81
IV.CAVE.HHZ. 2021-12-19T19:45:14.30 0.6 undecidable manual S 256 22.8549 50 -0.7 46
IV.FIU.EHN. 2021-12-19T19:45:13.35 1.0 undecidable manual P 152 34.6431 50 0.11 26
IV.SERM.EHZ. 2021-12-19T19:45:11.90 0.3 undecidable manual S 5 10.4784 131 -0.26 79
IV.RAVA.EHE. 2021-12-19T19:45:09.65 0.1 negative manual P 216 22.0668 50 -0.44 100
IV.CAVE.HHZ. 2021-12-19T19:45:09.89 0.3 undecidable manual P 256 22.8549 50 -0.4 76
IV.SERM.EHZ. 2021-12-19T19:45:08.56 0.3 undecidable manual P 5 10.4784 131 -0.1 82
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ZEN8.EHE. ML:1.5 0.0000346 0.26 AML other m 2021-12-19T19:45:36.76
IV.ZEN8.EHN. ML:1.5 0.000034099999999999995 0.56 AML other m 2021-12-19T19:45:37.05
IV.SGAL.EHN. ML:1.7 0.0000461 0.42 AML other m 2021-12-19T19:45:40.65
IV.SGAL.EHE. ML:1.6 0.000035249999999999996 0.48 AML other m 2021-12-19T19:45:41.61
IV.MAGA.HHE. ML:2.3 0.0001855 1.66 AML other m 2021-12-19T19:45:41.07
IV.MAGA.HHN. ML:2.2 0.00014399999999999998 1.68 AML other m 2021-12-19T19:45:41.11
SI.LUSI.HHE. ML:1.9 0.00006369999999999999 1.4 AML other m 2021-12-19T19:45:43.79
SI.LUSI.HHN. ML:2.3 0.000151 0.24 AML other m 2021-12-19T19:45:44.13
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