Earthquake with magnitude of ML 1.9 on date 04-12-2021 and time 15:23:49 (UTC) in region 3 km E Prignano sulla Secchia (MO)

A magnitude ML 1.9 earthquake occured in region: 3 km E Prignano sulla Secchia (MO), on

  • 04-12-2021 15:23:49 (UTC)
  • 04-12-2021 16:23:49 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.437, 10.726 at 32 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
Prignano sulla Secchia MO 3 3747 3747
Serramazzoni MO 5 8282 12029
Castellarano RE 8 15232 27261
Polinago MO 10 1672 28933
Montefiorino MO 12 2203 31136
Baiso RE 12 3315 34451
Sassuolo MO 13 40853 75304
Fiorano Modenese MO 13 17160 92464
Pavullo nel Frignano MO 14 17383 109847
Palagano MO 14 2194 112041
Lama Mocogno MO 14 2734 114775
Toano RE 15 4463 119238
Maranello MO 15 17359 136597
Viano RE 15 3374 139971
Carpineti RE 17 4064 144035
Casalgrande RE 17 19310 163345
Formigine MO 18 34323 197668
Scandiano RE 18 25483 223151
Guiglia MO 18 3931 227082
Castelvetro di Modena MO 19 11185 238267
Marano sul Panaro MO 19 5060 243327
Casina RE 20 4504 247831
Frassinoro MO 20 1926 249757

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km SW of Modena (184973 inhabitants)
30 Km S of Reggio nell'Emilia (171345 inhabitants)
41 Km SW of Carpi (70699 inhabitants)
49 Km W of Bologna (386663 inhabitants)
51 Km SE of Parma (192836 inhabitants)
58 Km N of Pistoia (90315 inhabitants)
64 Km NE of Carrara (63133 inhabitants)
64 Km NE of Massa (69479 inhabitants)
68 Km N of Lucca (89046 inhabitants)
69 Km NW of Prato (191150 inhabitants)
74 Km NE of Viareggio (62467 inhabitants)
79 Km W of Imola (69797 inhabitants)
80 Km E of La Spezia (93959 inhabitants)
84 Km SW of Ferrara (133155 inhabitants)
84 Km NW of Scandicci (50609 inhabitants)
84 Km NE of Pisa (89158 inhabitants)
85 Km NW of Firenze (382808 inhabitants)
94 Km W of Faenza (58541 inhabitants)
95 Km SE of Cremona (71901 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 1.9 2021-12-04
15:23:49
44.4368 10.7262 32 2021-12-04
15:30:01
Sala Sismica INGV-Roma 98134131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-04 15:23:49 ± 0.45
Latitude 44.4368 ± 0.0189
Longitude 10.7262 ± 0.0202
Depth (km) 32 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 98134131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1932
Semi-minor axis of confidence ellipse (meter) 805
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 199
Circular confidence region, given by single value of horizontal uncertainty (meter) 1930
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 210
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
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) 0.1313
Epicentral distance of station farthest from the epicenter (degree) 0.54949
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 98134131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-04 15:30:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MOCL.EHE. 2021-12-04T15:24:10.04 0.6 undecidable manual S 143 0.5405 113 0.71 39
GU.CARD.HHN. 2021-12-04T15:24:07.57 0.3 undecidable manual S 203 0.4461 118 0.77 59
GU.POPM.HHZ. 2021-12-04T15:24:05.21 0.3 undecidable manual S 177 0.3921 122 -0.21 71
IV.FNVD.HHE. 2021-12-04T15:24:05.34 0.3 undecidable manual S 133 0.3912 122 -0.05 74
IV.BDI.HHZ. 2021-12-04T15:24:04.50 0.6 undecidable manual S 194 0.3849 123 -0.75 41
IV.ZCCA.HHZ. 2021-12-04T15:24:02.09 0.3 undecidable manual S 116 0.1988 143 0.97 58
GU.MAIM.HHZ. 2021-12-04T15:24:01.52 0.1 undecidable manual P 198 0.5495 113 0.37 89
IV.MOCL.EHE. 2021-12-04T15:24:00.55 0.1 undecidable manual P 143 0.5405 113 -0.46 87
GU.GSCL.HHZ. 2021-12-04T15:23:59.26 0.6 undecidable manual S 229 0.1313 154 -0.8 41
GU.CARD.HHN. 2021-12-04T15:23:59.62 0.1 undecidable manual P 203 0.4461 118 0.07 97
IV.FNVD.HHE. 2021-12-04T15:23:58.28 0.1 undecidable manual P 133 0.3912 122 -0.46 89
IV.BDI.HHZ. 2021-12-04T15:23:58.47 0.6 negative manual P 194 0.3849 123 -0.19 47
GU.POPM.HHZ. 2021-12-04T15:23:58.57 1.0 undecidable manual P 177 0.3921 122 -0.18 24
IV.ZCCA.HHZ. 2021-12-04T15:23:56.46 0.1 positive manual P 116 0.1988 143 0.19 100
IV.ERBM.EHZ. 2021-12-04T15:23:56.87 0.1 undecidable manual P 266 0.2239 139 0.32 98
GU.GSCL.HHZ. 2021-12-04T15:23:55.17 0.1 positive manual P 229 0.1313 154 -0.49 92
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.GSCL.HHE. ML:2.3 0.000913 0.18 AML other m 2021-12-04T15:23:59.45
GU.GSCL.HHN. ML:2.4 0.001042 0.38 AML other m 2021-12-04T15:23:59.48
IV.ZCCA.HHN. ML:2 0.000356 1.58 AML other m 2021-12-04T15:24:03.10
IV.ZCCA.HHE. ML:1.8 0.0002135 1.08 AML other m 2021-12-04T15:24:03.56
IV.BDI.HHN. ML:1.8 0.00016 0.78 AML other m 2021-12-04T15:24:05.07
IV.BDI.HHE. ML:1.6 0.0001076 0.26 AML other m 2021-12-04T15:24:05.64
GU.POPM.HHN. ML:1.7 0.00012455 0.36 AML other m 2021-12-04T15:24:06.11
GU.POPM.HHE. ML:1.7 0.00011 1.52 AML other m 2021-12-04T15:24:06.01
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