Earthquake with magnitude of ML 0.5 on date 27-09-2021 and time 02:16:14 (UTC) in region 3 km E Sestino (AR)

A magnitude ML 0.5 earthquake occured in region: 3 km E Sestino (AR), on

  • 27-09-2021 02:16:14 (UTC)
  • 27-09-2021 04:16:14 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.707, 12.334 at 15 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
Sestino AR 3 1355 1355
Belforte all'Isauro PU 4 769 2124
Borgo Pace PU 6 606 2730
Mercatello sul Metauro PU 7 1378 4108
Piandimeleto PU 7 2167 6275
Frontino PU 7 293 6568
Sant'Angelo in Vado PU 8 4133 10701
Carpegna PU 8 1674 12375
Lunano PU 9 1527 13902
Pietrarubbia PU 12 660 14562
Badia Tedalda AR 12 1087 15649
Peglio PU 13 696 16345
Pennabilli RN 14 2869 19214
Macerata Feltria PU 14 1990 21204
Montecopiolo PU 15 1128 22332
Sassocorvaro PU 16 3504 25836
Urbania PU 16 7099 32935
Monte Cerignone PU 16 669 33604
Casteldelci RN 17 407 34011
Apecchio PU 18 1882 35893
Maiolo RN 19 848 36741
Piobbico PU 19 2029 38770

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km SW of Rimini (147750 inhabitants)
45 Km NE of Arezzo (99543 inhabitants)
48 Km S of Cesena (96758 inhabitants)
52 Km W of Pesaro (94582 inhabitants)
57 Km W of Fano (60888 inhabitants)
62 Km SE of Forlì (117913 inhabitants)
67 Km N of Perugia (166134 inhabitants)
74 Km SE of Faenza (58541 inhabitants)
80 Km S of Ravenna (159116 inhabitants)
87 Km E of Firenze (382808 inhabitants)
87 Km SE of Imola (69797 inhabitants)
89 Km NW of Foligno (57155 inhabitants)
92 Km E of Siena (53903 inhabitants)
93 Km E of Scandicci (50609 inhabitants)
96 Km W of Ancona (100861 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 the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.5 2021-09-27
02:16:14
43.7072 12.3337 15 2021-09-27
02:29:22
Sala Sismica INGV-Roma 95924971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-27 02:16:14 ± 0.35
Latitude 43.7072 ± 0.0171
Longitude 12.3337 ± 0.0137
Depth (km) 15 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95924971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1420
Semi-minor axis of confidence ellipse (meter) 1238
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 3
Circular confidence region, given by single value of horizontal uncertainty (meter) 1420
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 225
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.20325
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 4
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 95924971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-27 02:29:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.POFI.HHZ. 2021-09-27T02:17:27.59 3.0 undecidable manual Sn 0.92 0
IV.TST02.HHZ. 2021-09-27T02:17:17.63 3.0 undecidable manual Sn -6.71 0
IV.CELB.HHZ. 2021-09-27T02:17:14.21 3.0 undecidable manual Sn -1.39 0
IV.VENT.EHZ. 2021-09-27T02:17:14.38 3.0 negative manual Pg 15.49 0
CR.STON.BHZ. 2021-09-27T02:16:58.40 3.0 negative manual Pn -0.45 0
IV.FIR.HHZ. 2021-09-27T02:16:24.59 3.0 undecidable manual Pg 1.41 0
IV.NARO.HHZ. 2021-09-27T02:16:22.90 0.6 undecidable manual S 118 0.2032 110 -0.43 45
IV.APEC.HHZ. 2021-09-27T02:16:22.37 0.6 undecidable manual S 157 0.161 117 0.17 48
IV.PE3.EHZ. 2021-09-27T02:16:21.01 0.6 undecidable manual S 95 0.1178 129 -0.12 48
IV.PARC.HHZ. 2021-09-27T02:16:20.26 0.6 undecidable manual S 230 0.0899 138 -0.27 46
IV.APEC.HHZ. 2021-09-27T02:16:19.34 0.6 negative manual P 157 0.161 117 0.32 47
IV.NARO.HHZ. 2021-09-27T02:16:19.65 1.0 undecidable manual P 118 0.2032 110 -0.02 24
IV.PE3.EHZ. 2021-09-27T02:16:18.48 0.1 undecidable manual P 95 0.1178 129 0.08 100
IV.PARC.HHZ. 2021-09-27T02:16:18.16 0.6 undecidable manual P 230 0.0899 138 0.11 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PARC.HHE. ML:0.2 1.6783905E-5 1.76 AML other m 2021-09-27T02:16:21.33
IV.PARC.HHN. ML:0.2 1.545865E-5 4.52 AML other m 2021-09-27T02:16:20.71
IV.PE3.EHE. ML:0.8 6.1944375E-5 5.1008 AML other m 2021-09-27T02:16:21.02
IV.PE3.EHN. ML:0.9 6.258725E-5 1.6 AML other m 2021-09-27T02:16:22.02
IV.APEC.HHE. ML:0.5 1.944973E-5 0.1808 AML other m 2021-09-27T02:16:23.76
IV.APEC.HHN. ML:0.5 1.9085285E-5 2.4384 AML other m 2021-09-27T02:16:23.76
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