Earthquake with magnitude of ML 1.6 on date 17-12-2021 and time 16:40:39 (Italy) in region 4 km SE Prignano sulla Secchia (MO)

A magnitude ML 1.6 earthquake occured in region: 4 km SE Prignano sulla Secchia (MO), on

  • 17-12-2021 15:40:39 (UTC)
  • 17-12-2021 16:40:39 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.4080, 10.7260 at 19 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
Prignano sulla Secchia MO 4 3747 3747
Serramazzoni MO 5 8282 12029
Polinago MO 7 1672 13701
Montefiorino MO 10 2203 15904
Lama Mocogno MO 11 2734 18638
Castellarano RE 11 15232 33870
Palagano MO 11 2194 36064
Pavullo nel Frignano MO 12 17383 53447
Toano RE 14 4463 57910
Baiso RE 14 3315 61225
Sassuolo MO 16 40853 102078
Fiorano Modenese MO 16 17160 119238
Carpineti RE 17 4064 123302
Maranello MO 17 17359 140661
Frassinoro MO 17 1926 142587
Montecreto MO 18 940 143527
Viano RE 18 3374 146901
Guiglia MO 19 3931 150832
Marano sul Panaro MO 20 5060 155892
Sestola MO 20 2508 158400

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km SW of Modena (184973 inhabitants)
33 Km S of Reggio nell'Emilia (171345 inhabitants)
44 Km SW of Carpi (70699 inhabitants)
50 Km W of Bologna (386663 inhabitants)
54 Km SE of Parma (192836 inhabitants)
55 Km N of Pistoia (90315 inhabitants)
62 Km NE of Massa (69479 inhabitants)
62 Km NE of Carrara (63133 inhabitants)
65 Km N of Lucca (89046 inhabitants)
66 Km NW of Prato (191150 inhabitants)
71 Km NE of Viareggio (62467 inhabitants)
79 Km W of Imola (69797 inhabitants)
79 Km E of La Spezia (93959 inhabitants)
81 Km NW of Scandicci (50609 inhabitants)
81 Km NE of Pisa (89158 inhabitants)
83 Km NW of Firenze (382808 inhabitants)
85 Km SW of Ferrara (133155 inhabitants)
93 Km W of Faenza (58541 inhabitants)
98 Km SE of Cremona (71901 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 1.6 2021-12-17
15:40:39
44.4082 10.7262 19 2022-03-30
13:04:31
Bollettino Sismico Italiano INGV 99937721
Reviewed
Rev100
ML 1.7 2021-12-17
15:40:39
44.3873 10.7088 21 2021-12-17
15:49:09
Sala Sismica INGV-Roma 98625841
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-17 15:40:39 ± 0.22
Latitude 44.4082 ± 0.0117
Longitude 10.7262 ± 0.0138
Depth (km) 19 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 99937721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1422
Semi-minor axis of confidence ellipse (meter) 478
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 37
Circular confidence region, given by single value of horizontal uncertainty (meter) 1420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 176
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.44
Epicentral distance of station closest to the epicenter (degree) 0.11421
Epicentral distance of station farthest from the epicenter (degree) 1.04052
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 15
Type of magnitude ML
Reference to an origin 99937721
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-14 17:40:50

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 98625841
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-17 15:49:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PII.HHZ. 2021-12-17T15:41:03.63 0.6 undecidable manual S 192 0.7006 97 0.57 40
GU.GORR.HHN. 2021-12-17T15:40:59.18 0.3 undecidable manual P 282 1.0405 94 0.2 63
IV.CSNT.HHZ. 2021-12-17T15:40:59.68 0.3 undecidable manual P 156 1.0189 94 1.08 46
IV.BOB.HNE. 2021-12-17T15:40:59.70 0.3 undecidable manual P 292 0.9785 95 1.79 32
IV.MPPT.EHE. 2021-12-17T15:40:57.95 0.6 undecidable manual S 150 0.5207 100 0.18 46
GU.GRAM.HHZ. 2021-12-17T15:40:56.99 0.6 undecidable manual S 280 0.4784 101 0.44 45
GU.CARD.HHZ. 2021-12-17T15:40:55.03 0.6 undecidable manual S 205 0.4200 103 0.19 48
IV.MSSA.HHZ. 2021-12-17T15:40:55.90 0.3 undecidable manual P 264 0.8687 95 -0.14 66
IV.PLMA.HHZ. 2021-12-17T15:40:53.16 0.3 undecidable manual P 240 0.7204 97 -0.35 65
IV.FNVD.HHE. 2021-12-17T15:40:53.61 0.6 undecidable manual S 130 0.3723 105 0.15 48
IV.BDI.HHZ. 2021-12-17T15:40:53.51 0.6 undecidable manual S 195 0.3579 106 0.46 45
GU.POPM.HHZ. 2021-12-17T15:40:53.74 0.6 undecidable manual S 177 0.3633 105 0.52 44
IV.PII.HHZ. 2021-12-17T15:40:52.97 0.3 undecidable manual P 192 0.7006 97 -0.22 68
IV.ERBM.EHE. 2021-12-17T15:40:50.36 0.6 undecidable manual S 273 0.2239 118 1 38
IV.MPPT.EHE. 2021-12-17T15:40:50.32 0.3 undecidable manual P 150 0.5207 100 0.19 70
IV.MOCL.EHE. 2021-12-17T15:40:50.99 0.3 undecidable manual P 141 0.5180 100 0.89 56
GU.EQUI.HHE. 2021-12-17T15:40:49.01 0.3 undecidable manual P 240 0.4757 101 -0.37 68
GU.GRAM.HHZ. 2021-12-17T15:40:49.47 0.3 undecidable manual P 280 0.4784 101 0.04 74
GU.MAIM.HHE. 2021-12-17T15:40:49.52 0.3 undecidable manual P 199 0.5225 100 -0.65 63
GU.POPM.HHZ. 2021-12-17T15:40:47.24 0.3 undecidable manual P 177 0.3633 105 -0.27 72
GU.CARD.HHZ. 2021-12-17T15:40:47.71 0.3 undecidable manual P 205 0.4200 103 -0.73 62
IV.BDI.HHZ. 2021-12-17T15:40:46.88 0.1 negative manual P 195 0.3579 106 -0.53 90
GU.GSCL.HHZ. 2021-12-17T15:40:46.56 0.6 undecidable manual S 240 0.1142 140 -0.24 51
IV.FNVD.HHE. 2021-12-17T15:40:46.84 0.1 undecidable manual P 130 0.3723 105 -0.81 81
IV.ERBM.EHE. 2021-12-17T15:40:45.07 0.1 undecidable manual P 273 0.2239 118 -0.21 99
IV.ZCCA.HHZ. 2021-12-17T15:40:44.97 0.1 positive manual P 108 0.1880 124 0.22 100
GU.GSCL.HHZ. 2021-12-17T15:40:43.53 0.1 negative manual P 240 0.1142 140 -0.27 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.GSCL.HHN. ML:1.9 0.00056634615 0.1792 AML other m 2021-12-17T15:40:47.76
GU.GSCL.HHE. ML:1.9 0.00058307025 0.1664 AML other m 2021-12-17T15:40:47.72
IV.BDI.HNE. ML:1.9 0.000268 0.62 AML other m 2021-12-17T15:40:48.42
IV.ZCCA.HHE. ML:1.7 0.0002675716 0.3072 AML other m 2021-12-17T15:40:51.53
IV.ZCCA.HHN. ML:2.2 0.0008655721499999999 0.3712 AML other m 2021-12-17T15:40:51.60
IV.BDI.HHN. ML:1.5 0.00010725 0.92 AML other m 2021-12-17T15:40:53.89
GU.POPM.HHE. ML:1.4 0.0000708009 1.3568 AML other m 2021-12-17T15:40:54.60
IV.BDI.HHE. ML:1.2 0.000051896645000000004 0.4096 AML other m 2021-12-17T15:40:54.07
GU.POPM.HHN. ML:1.4 0.00007284292 0.4992 AML other m 2021-12-17T15:40:54.43
IV.BDI.HNN. ML:1.6 0.00012410732 1.0752 AML other m 2021-12-17T15:40:54.25
GU.GRAM.HHN. ML:1.5 0.00006838203499999999 0.384 AML other m 2021-12-17T15:40:57.64
GU.GRAM.HHE. ML:1.6 0.00008965000000000001 0.38 AML other m 2021-12-17T15:40:57.71
IV.PII.HHN. ML:1.5 0.000037965570000000006 0.3072 AML other m 2021-12-17T15:41:03.92
IV.PII.HHE. ML:1.9 0.000101515495 0.7168 AML other m 2021-12-17T15:41:04.61
IV.PLMA.HHE. ML:1.3 0.000023197885000000003 0.3584 AML other m 2021-12-17T15:41:04.83
IV.ASSB.HHE. ML:0.0 0.00007275 0.06 AML other m 2021-12-17T15:41:24.36
IV.BRSN.EHN. ML:0.0 0.00123 0.82 AML other m 2021-12-17T15:41:27.53
IV.BRSN.HNE. ML:0.0 0.00121 0.96 AML other m 2021-12-17T15:41:28.14
IV.BRSN.EHE. ML:0.0 0.001085 0.96 AML other m 2021-12-17T15:41:28.62
IV.BRSN.HNN. ML:0.0 0.0012269999999999998 0.16 AML other m 2021-12-17T15:41:28.65
IV.ASSB.HHN. ML:0.0 0.000039 0.42 AML other m 2021-12-17T15:41:39.67
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, http://terremoti.ingv.it/tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download