Earthquake with magnitude of ML 1.7 on date 20-10-2021 and time 23:37:55 (Italy) in region 2 km E Palagano (MO)

A magnitude ML 1.7 earthquake occured in region: 2 km E Palagano (MO), on

  • 20-10-2021 21:37:55 (UTC)
  • 20-10-2021 23:37:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.32, 10.678 at 9 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
Palagano MO 2 2194 2194
Lama Mocogno MO 4 2734 4928
Polinago MO 5 1672 6600
Montefiorino MO 6 2203 8803
Montecreto MO 9 940 9743
Frassinoro MO 9 1926 11669
Riolunato MO 10 712 12381
Toano RE 11 4463 16844
Sestola MO 12 2508 19352
Pavullo nel Frignano MO 13 17383 36735
Prignano sulla Secchia MO 13 3747 40482
Pievepelago MO 13 2222 42704
Serramazzoni MO 15 8282 50986
Fanano MO 16 2989 53975
Fiumalbo MO 16 1280 55255
Villa Minozzo RE 18 3750 59005
Abetone PT 20 621 59626
Carpineti RE 20 4064 63690

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km SW of Modena (184973 inhabitants)
42 Km S of Reggio nell'Emilia (171345 inhabitants)
47 Km NW of Pistoia (90315 inhabitants)
53 Km NE of Massa (69479 inhabitants)
54 Km NE of Carrara (63133 inhabitants)
54 Km SW of Carpi (70699 inhabitants)
55 Km N of Lucca (89046 inhabitants)
56 Km W of Bologna (386663 inhabitants)
59 Km NW of Prato (191150 inhabitants)
60 Km SE of Parma (192836 inhabitants)
61 Km NE of Viareggio (62467 inhabitants)
71 Km NE of Pisa (89158 inhabitants)
72 Km E of La Spezia (93959 inhabitants)
74 Km NW of Scandicci (50609 inhabitants)
77 Km NW of Firenze (382808 inhabitants)
83 Km W of Imola (69797 inhabitants)
90 Km NE of Livorno (159219 inhabitants)
94 Km SW of Ferrara (133155 inhabitants)
96 Km W of Faenza (58541 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 1.7 2021-10-20
21:37:55
44.3197 10.6783 9 2021-10-20
21:43:40
Sala Sismica INGV-Roma 96812381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-20 21:37:55 ± 0.09
Latitude 44.3197 ± 0.0054
Longitude 10.6783 ± 0.0063
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96812381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 650
Semi-minor axis of confidence ellipse (meter) 419
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 14
Circular confidence region, given by single value of horizontal uncertainty (meter) 650
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 146
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.47844
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 96812381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-20 21:43:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PE3.EHZ. 2021-10-20T21:38:20.53 3.0 positive manual P -0.18 0
GU.GRAM.HHZ. 2021-10-20T21:38:12.67 0.3 undecidable manual S 292 0.4703 50 0.65 61
GU.EQUI.HHZ. 2021-10-20T21:38:09.88 0.3 undecidable manual S 248 0.4065 50 -0.25 69
IV.PII.HHZ. 2021-10-20T21:38:07.23 3.0 negative manual P -0.4 0
GU.SARM.EHE. 2021-10-20T21:38:05.14 0.1 undecidable manual S 236 0.2401 109 0.14 97
IV.MPPT.EHZ. 2021-10-20T21:38:04.87 0.3 negative manual P 141 0.4676 50 0 72
GU.GRAM.HHZ. 2021-10-20T21:38:04.63 0.6 undecidable manual P 292 0.4703 50 -0.29 45
GU.MAIM.HHZ. 2021-10-20T21:38:04.24 0.6 undecidable manual P 198 0.4281 50 0.04 48
IV.MOCL.EHZ. 2021-10-20T21:38:04.98 0.3 positive manual P 131 0.4784 50 -0.08 70
GU.EQUI.HHZ. 2021-10-20T21:38:03.46 0.6 positive manual P 248 0.4065 50 -0.37 45
GU.FIVI.HNN. 2021-10-20T21:38:03.58 0.3 undecidable manual P 259 0.4029 50 -0.19 70
GU.CARD.HHZ. 2021-10-20T21:38:02.46 0.1 positive manual P 206 0.3256 50 0.02 98
GU.POPM.HHZ. 2021-10-20T21:38:01.71 0.1 positive manual P 168 0.2806 50 0.04 98
IV.BDI.HHZ. 2021-10-20T21:38:01.43 0.1 positive manual P 193 0.2635 107 0.08 98
GU.SARM.EHE. 2021-10-20T21:38:00.94 0.1 undecidable manual P 236 0.2401 109 0.07 99
IV.ZCCA.HHZ. 2021-10-20T21:38:00.59 0.6 undecidable manual P 82 0.2158 111 0.25 48
GU.GSCL.HHZ. 2021-10-20T21:37:59.34 0.3 undecidable manual S 296 0.0719 139 -0.07 76
GU.GSCL.HHZ. 2021-10-20T21:37:57.48 0.1 positive manual P 296 0.0719 139 -0.16 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.GSCL.HHN. ML:2 0.001645 0.94 AML other m 2021-10-20T21:37:59.96
GU.GSCL.HHE. ML:1.9 0.0012295 0.22 AML other m 2021-10-20T21:37:59.84
GU.MAIM.HHE. ML:1.2 4.65E-5 1.12 AML other m 2021-10-20T21:38:04.19
IV.BDI.HNN. ML:1.8 0.0003275 0.32 AML other m 2021-10-20T21:38:08.17
IV.BDI.HHE. ML:1.9 0.0004395 0.16 AML other m 2021-10-20T21:38:08.31
IV.BDI.HNE. ML:1.9 0.0004045 0.16 AML other m 2021-10-20T21:38:08.40
IV.BDI.HHN. ML:1.8 0.0003505 0.5 AML other m 2021-10-20T21:38:08.17
GU.POPM.HHN. ML:1.9 0.000357 0.44 AML other m 2021-10-20T21:38:08.39
IV.ZCCA.HHE. ML:1.5 0.0002095 0.6 AML other m 2021-10-20T21:38:09.49
GU.POPM.HHE. ML:2 0.0004715 0.28 AML other m 2021-10-20T21:38:09.06
GU.CARD.HHN. ML:1.7 0.000198 0.16 AML other m 2021-10-20T21:38:09.57
GU.CARD.HHE. ML:1.9 0.00033 0.14 AML other m 2021-10-20T21:38:09.77
IV.ZCCA.HHN. ML:1.3 0.0001352 0.54 AML other m 2021-10-20T21:38:10.59
GU.MAIM.HHN. ML:1.4 7.515E-5 0.82 AML other m 2021-10-20T21:38:13.51
IV.MOCL.EHE. ML:1.4 6.57E-5 0.3 AML other m 2021-10-20T21:38:13.20
IV.MPPT.EHE. ML:1.3 5.64E-5 0.9 AML other m 2021-10-20T21:38:13.57
IV.MOCL.EHN. ML:1.4 5.445E-5 1.22 AML other m 2021-10-20T21:38:14.25
IV.MPPT.EHN. ML:1.3 4.945E-5 0.26 AML other m 2021-10-20T21:38:14.27
IV.PII.HHE. ML:2.1 0.0002145 1.18 AML other m 2021-10-20T21:38:18.25
IV.PII.HHN. ML:2 0.0001895 0.24 AML other m 2021-10-20T21:38:19.14
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