Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 07-12-2021 and time 12:25:54 (Italy) in region 4 km NW Piobbico (PU)

A magnitude ML 1.1 earthquake occured in region: 4 km NW Piobbico (PU), on

  • 07-12-2021 11:25:54 (UTC)
  • 07-12-2021 12:25:54 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.6230, 12.4820 at 11 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.

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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
Piobbico PU 4 2029 2029
Urbania PU 6 7099 9128
Sant'Angelo in Vado PU 7 4133 13261
Peglio PU 8 696 13957
Apecchio PU 9 1882 15839
Mercatello sul Metauro PU 12 1378 17217
Lunano PU 12 1527 18744
Piandimeleto PU 13 2167 20911
Belforte all'Isauro PU 14 769 21680
Fermignano PU 15 8596 30276
Acqualagna PU 15 4393 34669
Borgo Pace PU 16 606 35275
Cagli PU 16 8731 44006
Urbino PU 17 15019 59025
Sestino AR 18 1355 60380
Sassocorvaro PU 18 3504 63884
Frontino PU 18 293 64177

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km SW of Pesaro (94582 inhabitants)
49 Km S of Rimini (147750 inhabitants)
50 Km W of Fano (60888 inhabitants)
51 Km E of Arezzo (99543 inhabitants)
58 Km N of Perugia (166134 inhabitants)
60 Km SE of Cesena (96758 inhabitants)
76 Km SE of Forlì (117913 inhabitants)
76 Km N of Foligno (57155 inhabitants)
84 Km W of Ancona (100861 inhabitants)
88 Km SE of Faenza (58541 inhabitants)
91 Km S of Ravenna (159116 inhabitants)
99 Km E of Siena (53903 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
Reviewed
Rev100 		ML 1.1 2021-12-07
11:25:54		 43.6233 12.4818 11 2021-12-07
11:31:09		 Sala Sismica INGV-Roma 98237011
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-07 11:25:54 ± 0.05
Latitude 43.6233 ± 0.0045
Longitude 12.4818 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 98237011

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 461
Semi-minor axis of confidence ellipse (meter) 245
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 178
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 170
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.20594
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.5
Num. used stations 6
Type of magnitude ML
Reference to an origin 98237011
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-07 11:31:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.COR1.EHZ. 2021-12-07T11:26:08.45 3.0 undecidable manual S -0.14 0
IV.ATPI.EHZ. 2021-12-07T11:26:02.16 0.6 undecidable manual S 199 20.1687 50 -0.04 49
IV.MPAG.EHZ. 2021-12-07T11:26:02.87 0.6 undecidable manual S 88 22.2555 50 0.11 48
IV.FRON.EHZ. 2021-12-07T11:26:02.92 0.6 undecidable manual S 121 22.8549 50 0.02 49
IV.PARC.HHZ. 2021-12-07T11:26:01.94 0.3 undecidable manual S 278 19.7691 50 -0.14 72
IV.PIEI.HHZ. 2021-12-07T11:25:59.36 0.6 undecidable manual S 156 10.5783 136 -0.27 47
IV.APEC.HHZ. 2021-12-07T11:25:59.34 0.3 undecidable manual S 215 8.7801 141 0.14 73
IV.MPAG.EHZ. 2021-12-07T11:25:59.23 0.3 positive manual P 88 22.2555 50 0.03 73
IV.FRON.EHZ. 2021-12-07T11:25:59.30 1.0 undecidable manual P 121 22.8549 50 0.02 24
IV.NARO.HHZ. 2021-12-07T11:25:58.83 0.6 undecidable manual S 100 8.0808 144 -0.22 48
IV.PARC.HHZ. 2021-12-07T11:25:58.78 0.3 positive manual P 278 19.7691 50 -0.02 74
IV.ATPI.EHZ. 2021-12-07T11:25:58.92 1.0 positive manual P 199 20.1687 50 0.05 24
IV.NARO.HHZ. 2021-12-07T11:25:57.10 0.1 undecidable manual P 100 8.0808 144 0.05 100
IV.PIEI.HHZ. 2021-12-07T11:25:57.38 0.1 negative manual P 156 10.5783 136 -0.01 100
IV.APEC.HHZ. 2021-12-07T11:25:57.39 0.6 undecidable manual P 215 8.7801 141 0.25 48
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NARO.HHE. ML:1.1 0.00015879999999999998 0.06 AML other m 2021-12-07T11:25:59.01
IV.NARO.HHN. ML:1.1 0.0001715 1.82 AML other m 2021-12-07T11:25:59.04
IV.PIEI.HHE. ML:0.8 0.0000797 0.66 AML other m 2021-12-07T11:25:59.59
IV.PIEI.HHN. ML:0.7 0.000053400000000000004 1.04 AML other m 2021-12-07T11:26:00.76
IV.MPAG.HNN. ML:2.2 0.000965 0.62 AML other m 2021-12-07T11:26:02.32
IV.MPAG.HNE. ML:2.2 0.0009670000000000001 1.32 AML other m 2021-12-07T11:26:02.32
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