Earthquake with magnitude of ML 1.8 on date 03-12-2021 and time 00:00:30 (Italy) in region 4 km W Prignano sulla Secchia (MO)

A magnitude ML 1.8 earthquake occured in region: 4 km W Prignano sulla Secchia (MO), on

  • 02-12-2021 23:00:30 (UTC)
  • 03-12-2021 00:00:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.43, 10.641 at 28 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 4 3747 3747
Montefiorino MO 8 2203 5950
Baiso RE 8 3315 9265
Toano RE 9 4463 13728
Carpineti RE 10 4064 17792
Castellarano RE 11 15232 33024
Polinago MO 12 1672 34696
Serramazzoni MO 12 8282 42978
Palagano MO 12 2194 45172
Viano RE 13 3374 48546
Casina RE 14 4504 53050
Lama Mocogno MO 15 2734 55784
Villa Minozzo RE 16 3750 59534
Frassinoro MO 16 1926 61460
Sassuolo MO 17 40853 102313
Fiorano Modenese MO 18 17160 119473
Pavullo nel Frignano MO 18 17383 136856
Castelnovo ne' Monti RE 19 10465 147321
Scandiano RE 19 25483 172804
Casalgrande RE 20 19310 192114

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km S of Reggio nell'Emilia (171345 inhabitants)
33 Km SW of Modena (184973 inhabitants)
44 Km SW of Carpi (70699 inhabitants)
48 Km SE of Parma (192836 inhabitants)
56 Km W of Bologna (386663 inhabitants)
58 Km NE of Carrara (63133 inhabitants)
59 Km NE of Massa (69479 inhabitants)
59 Km NW of Pistoia (90315 inhabitants)
66 Km N of Lucca (89046 inhabitants)
70 Km NE of Viareggio (62467 inhabitants)
71 Km NW of Prato (191150 inhabitants)
74 Km E of La Spezia (93959 inhabitants)
82 Km N of Pisa (89158 inhabitants)
86 Km W of Imola (69797 inhabitants)
86 Km NW of Scandicci (50609 inhabitants)
88 Km NW of Firenze (382808 inhabitants)
90 Km SW of Ferrara (133155 inhabitants)
92 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 1.8 2021-12-02
23:00:30
44.4303 10.6412 28 2021-12-02
23:13:35
Sala Sismica INGV-Roma 98076561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-02 23:00:30 ± 0.23
Latitude 44.4303 ± 0.0189
Longitude 10.6412 ± 0.0264
Depth (km) 28 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 98076561

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2052
Semi-minor axis of confidence ellipse (meter) 1931
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 265
Circular confidence region, given by single value of horizontal uncertainty (meter) 2050
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 94
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.46
Epicentral distance of station closest to the epicenter (degree) 0.08813
Epicentral distance of station farthest from the epicenter (degree) 1.34449
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 98076561
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-02 23:13:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MAGA.HHZ. 2021-12-02T23:00:53.90 0.1 undecidable manual P 360 1.3445 54 -0.09 79
IV.TREG.EHZ. 2021-12-02T23:00:51.70 0.1 undecidable manual P 18 1.152 54 0.37 79
IV.BDI.HHZ. 2021-12-02T23:00:45.35 0.3 undecidable manual S 185 0.3687 119 0.43 69
IV.ZCCA.HHZ. 2021-12-02T23:00:42.69 0.3 undecidable manual S 108 0.2527 130 0.62 64
GU.GSCL.HHZ. 2021-12-02T23:00:39.14 0.3 undecidable manual S 205 0.0881 159 -0.03 79
IV.BDI.HHZ. 2021-12-02T23:00:38.46 0.1 negative manual P 185 0.3687 119 -0.3 94
IV.ERBM.EHZ. 2021-12-02T23:00:36.42 0.3 undecidable manual P 266 0.1637 144 0.36 72
IV.ZCCA.HHZ. 2021-12-02T23:00:36.44 0.1 negative manual P 108 0.2527 130 -0.67 88
GU.GSCL.HHZ. 2021-12-02T23:00:35.13 0.1 negative manual P 205 0.0881 159 -0.31 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.GSCL.HHE. ML:1.8 0.000305 0.2 AML other m 2021-12-02T23:00:39.44
GU.GSCL.HHN. ML:1.6 0.0002085 1.08 AML other m 2021-12-02T23:00:39.37
IV.ZCCA.HHN. ML:2.1 0.0004655 0.34 AML other m 2021-12-02T23:00:43.00
IV.ZCCA.HHE. ML:1.7 0.00018765 1.72 AML other m 2021-12-02T23:00:43.05
IV.VIVA.HHN. ML:4.2 0.001545 0.08 AML other m 2021-12-02T23:01:29.27
IV.VIVA.HHE. ML:4.4 0.00231 0.04 AML other m 2021-12-02T23:01:30.66
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