Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 18-01-2021 and time 22:25:38 (Italy) in region 1 km W Pavullo nel Frignano (MO)

A magnitude ML 1.4 earthquake occured in region: 1 km W Pavullo nel Frignano (MO), on

  • 18-01-2021 21:25:38 (UTC)
  • 18-01-2021 22:25:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.3380, 10.8180 at 25 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
Pavullo nel Frignano MO 1 17383 17383
Polinago MO 8 1672 19055
Lama Mocogno MO 8 2734 21789
Serramazzoni MO 10 8282 30071
Montecreto MO 13 940 31011
Sestola MO 13 2508 33519
Montese MO 13 3353 36872
Palagano MO 14 2194 39066
Zocca MO 14 4719 43785
Fanano MO 15 2989 46774
Prignano sulla Secchia MO 15 3747 50521
Guiglia MO 15 3931 54452
Montefiorino MO 15 2203 56655
Castel d'Aiano BO 16 1906 58561
Riolunato MO 18 712 59273
Marano sul Panaro MO 18 5060 64333
Gaggio Montano BO 18 4878 69211

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km S of Modena (184973 inhabitants)
43 Km SE of Reggio nell'Emilia (171345 inhabitants)
45 Km W of Bologna (386663 inhabitants)
46 Km N of Pistoia (90315 inhabitants)
50 Km S of Carpi (70699 inhabitants)
56 Km NW of Prato (191150 inhabitants)
60 Km NE of Lucca (89046 inhabitants)
63 Km NE of Massa (69479 inhabitants)
64 Km E of Carrara (63133 inhabitants)
65 Km SE of Parma (192836 inhabitants)
69 Km NE of Viareggio (62467 inhabitants)
71 Km NW of Scandicci (50609 inhabitants)
71 Km W of Imola (69797 inhabitants)
72 Km NW of Firenze (382808 inhabitants)
77 Km NE of Pisa (89158 inhabitants)
83 Km E of La Spezia (93959 inhabitants)
84 Km SW of Ferrara (133155 inhabitants)
85 Km W of Faenza (58541 inhabitants)
96 Km NE of Livorno (159219 inhabitants)
98 Km W 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 1.4 2021-01-18
21:25:38		 44.3385 10.8182 25 2021-07-12
16:55:00		 Bollettino Sismico Italiano INGV 87657881
Reviewed
Rev100 		ML 1.5 2021-01-18
21:25:38		 44.3623 10.84 26 2021-01-18
22:06:50		 Sala Sismica INGV-Roma 86361481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-18 21:25:38 ± 0.31
Latitude 44.3385 ± 0.0117
Longitude 10.8182 ± 0.0126
Depth (km) 25 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87657881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1184
Semi-minor axis of confidence ellipse (meter) 491
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 193
Circular confidence region, given by single value of horizontal uncertainty (meter) 1180.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 158
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.11421
Epicentral distance of station farthest from the epicenter (degree) 0.55848
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 87657881
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-03 11:13:42

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 86361481
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-18 22:06:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.GRAM.HHZ. 2021-01-18T21:25:59.07 1.0 undecidable manual S 286 61.9935 106 0.92 19
IV.MOCL.EHE. 2021-01-18T21:25:54.40 0.3 undecidable manual S 142 46.9197 112 0.06 73
IV.MPPT.EHZ. 2021-01-18T21:25:54.63 0.3 undecidable manual S 153 47.5191 112 0.16 71
GU.CARD.HHZ. 2021-01-18T21:25:53.76 0.6 undecidable manual S 218 43.7229 114 0.19 48
IV.BDI.HHZ. 2021-01-18T21:25:51.75 0.3 undecidable manual S 210 35.3424 119 0.2 73
GU.POPM.HHZ. 2021-01-18T21:25:51.00 0.3 undecidable manual S 189 32.9448 122 0.01 76
GU.GRAM.HHZ. 2021-01-18T21:25:50.78 1.0 undecidable manual P 286 61.9935 106 0.89 19
IV.FNVD.HHE. 2021-01-18T21:25:50.22 0.3 undecidable manual S 128 30.747 124 -0.28 73
IV.ZCCA.HHZ. 2021-01-18T21:25:48.11 0.3 undecidable manual S 84 12.6762 150 0.97 59
IV.MTRZ.HNN. 2021-01-18T21:25:48.80 0.3 undecidable manual P 93 48.2184 111 0.92 56
IV.MPPT.EHZ. 2021-01-18T21:25:47.37 0.3 undecidable manual P 153 47.5191 112 -0.4 68
GU.CARD.HHZ. 2021-01-18T21:25:47.79 0.1 undecidable manual P 218 43.7229 114 0.55 88
GU.GSCL.HHZ. 2021-01-18T21:25:47.76 0.3 undecidable manual S 274 18.2706 140 -0.25 73
IV.MOCL.EHE. 2021-01-18T21:25:47.48 0.3 undecidable manual P 142 46.9197 112 -0.21 71
GU.POPM.HHZ. 2021-01-18T21:25:45.69 0.1 undecidable manual P 189 32.9448 122 -0.07 100
IV.BDI.HHZ. 2021-01-18T21:25:45.90 0.3 undecidable manual P 210 35.3424 119 -0.18 73
IV.FNVD.HHE. 2021-01-18T21:25:44.73 0.1 undecidable manual P 128 30.747 124 -0.74 83
IV.ZCCA.HHZ. 2021-01-18T21:25:43.30 0.1 undecidable manual P 84 12.6762 150 -0.23 100
GU.GSCL.HHZ. 2021-01-18T21:25:43.60 0.1 undecidable manual P 274 18.2706 140 -0.43 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.GSCL.HHN. ML:1.3 0.00009552258499999999 0.1792 AML other m 2021-01-18T21:25:48.06
GU.GSCL.HHE. ML:1.4 0.0001365 0.2 AML other m 2021-01-18T21:25:48.33
GU.POPM.HHN. ML:1.5 0.00011449999999999999 1.86 AML other m 2021-01-18T21:25:51.06
GU.POPM.HHE. ML:1.6 0.00012385135 0.2816 AML other m 2021-01-18T21:25:52.07
IV.BDI.HHE. ML:1.2 0.000046689715 1.7696 AML other m 2021-01-18T21:25:52.90
IV.BDI.HHN. ML:1.2 0.0000455 0.46 AML other m 2021-01-18T21:25:54.71
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