Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 09-11-2021 and time 23:58:06 (UTC) in region 4 km NE Apecchio (PU)

A magnitude ML 1.0 earthquake occured in region: 4 km NE Apecchio (PU), on

  • 09-11-2021 23:58:06 (UTC)
  • 10-11-2021 00:58:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.5830, 12.4520 at 16 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
Apecchio PU 4 1882 1882
Piobbico PU 5 2029 3911
Sant'Angelo in Vado PU 10 4133 8044
Urbania PU 11 7099 15143
Mercatello sul Metauro PU 12 1378 16521
Peglio PU 13 696 17217
Borgo Pace PU 15 606 17823
Pietralunga PG 16 2111 19934
Piandimeleto PU 16 2167 22101
Belforte all'Isauro PU 16 769 22870
Cagli PU 16 8731 31601
Lunano PU 17 1527 33128
Acqualagna PU 18 4393 37521
Cantiano PU 19 2245 39766
Sestino AR 19 1355 41121
Fermignano PU 19 8596 49717

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 Km E of Arezzo (99543 inhabitants)
52 Km SW of Pesaro (94582 inhabitants)
53 Km N of Perugia (166134 inhabitants)
54 Km S of Rimini (147750 inhabitants)
54 Km SW of Fano (60888 inhabitants)
64 Km S of Cesena (96758 inhabitants)
73 Km N of Foligno (57155 inhabitants)
79 Km SE of Forlì (117913 inhabitants)
86 Km W of Ancona (100861 inhabitants)
91 Km SE of Faenza (58541 inhabitants)
95 Km E of Siena (53903 inhabitants)
95 Km S of Ravenna (159116 inhabitants)
98 Km E of Firenze (382808 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 1.0 2021-11-09
23:58:06		 43.5827 12.4523 16 2021-11-10
00:10:35		 Sala Sismica INGV-Roma 97369811
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-09 23:58:06 ± 0.16
Latitude 43.5827 ± 0.0063
Longitude 12.4523 ± 0.0074
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97369811

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 769
Semi-minor axis of confidence ellipse (meter) 336
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 329
Circular confidence region, given by single value of horizontal uncertainty (meter) 770.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.16817
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 97369811
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-10 00:10:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GAVE.EHZ. 2021-11-09T23:58:39.51 3.0 undecidable manual S 0.08 0
IV.PARC.HHZ. 2021-11-09T23:58:14.29 0.3 undecidable manual S 293 18.6702 118 -0.27 71
IV.BADI.EHZ. 2021-11-09T23:58:14.63 0.3 undecidable manual S 244 18.5703 118 0.1 73
IV.PE3.EHZ. 2021-11-09T23:58:13.69 0.3 undecidable manual S 16 13.0758 131 0.36 70
IV.ATPI.EHZ. 2021-11-09T23:58:13.61 0.6 undecidable manual S 195 15.1737 126 -0.16 49
IV.NARO.HHZ. 2021-11-09T23:58:12.64 0.1 undecidable manual S 73 10.7781 138 -0.25 96
IV.APEC.HHZ. 2021-11-09T23:58:12.10 0.3 undecidable manual S 224 3.6963 164 0.14 75
IV.PARC.HHZ. 2021-11-09T23:58:11.13 0.1 undecidable manual P 293 18.6702 118 -0.13 98
IV.BADI.EHZ. 2021-11-09T23:58:11.33 0.3 undecidable manual P 244 18.5703 118 0.08 73
IV.PE3.EHZ. 2021-11-09T23:58:10.63 0.1 undecidable manual P 16 13.0758 131 0.08 99
IV.ATPI.EHZ. 2021-11-09T23:58:10.97 0.6 positive manual P 195 15.1737 126 0.16 49
IV.NARO.HHZ. 2021-11-09T23:58:10.19 0.1 undecidable manual P 73 10.7781 138 -0.11 99
IV.APEC.HHZ. 2021-11-09T23:58:09.88 0.1 undecidable manual P 224 3.6963 164 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.APEC.HHE. ML:1.0 0.00010413201999999999 0.3584 AML other m 2021-11-09T23:58:12.70
IV.APEC.HHN. ML:0.8 0.000069696415 2.8032 AML other m 2021-11-09T23:58:12.10
IV.NARO.HHN. ML:1.1 0.00010492441 0.1408 AML other m 2021-11-09T23:58:12.86
IV.BADI.EHE. ML:1.0 0.00007210324 0.8192 AML other m 2021-11-09T23:58:14.66
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