Earthquake with magnitude of ML 1.2 on date 27-10-2021 and time 19:47:59 (Italy) in region 4 km NE Frontone (PU)

A magnitude ML 1.2 earthquake occured in region: 4 km NE Frontone (PU), on

  • 27-10-2021 17:47:59 (UTC)
  • 27-10-2021 19:47:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.538, 12.777 at 20 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
Frontone PU 4 1300 1300
Serra Sant'Abbondio PU 5 1027 2327
Pergola PU 6 6333 8660
Cagli PU 10 8731 17391
Acqualagna PU 12 4393 21784
Sassoferrato AN 13 7285 29069
Arcevia AN 14 4612 33681
Cantiano PU 14 2245 35926
Fratte Rosa PU 15 966 36892
San Lorenzo in Campo PU 16 3414 40306
Fossombrone PU 17 9575 49881
Scheggia e Pascelupo PG 17 1393 51274
Genga AN 18 1797 53071
Castelleone di Suasa AN 18 1676 54747
Sant'Ippolito PU 18 1563 56310
Fermignano PU 19 8596 64906
Barchi PU 20 967 65873

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km SW of Fano (60888 inhabitants)
43 Km S of Pesaro (94582 inhabitants)
57 Km NE of Perugia (166134 inhabitants)
61 Km W of Ancona (100861 inhabitants)
61 Km S of Rimini (147750 inhabitants)
65 Km N of Foligno (57155 inhabitants)
73 Km E of Arezzo (99543 inhabitants)
79 Km SE of Cesena (96758 inhabitants)
96 Km SE of Forlì (117913 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 1.2 2021-10-27
17:47:59
43.5378 12.7773 20 2021-10-27
17:55:57
Sala Sismica INGV-Roma 97027021
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-27 17:47:59 ± 0.1
Latitude 43.5378 ± 0.0045
Longitude 12.7773 ± 0.0062
Depth (km) 20 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97027021

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 536
Semi-minor axis of confidence ellipse (meter) 423
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 261
Circular confidence region, given by single value of horizontal uncertainty (meter) 540
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.08
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.31476
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 97027021
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-27 17:55:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
CR.STON.BHZ. 2021-10-27T17:49:42.64 3.0 undecidable manual Sn 5.06 0
IV.MILN.HNZ. 2021-10-27T17:49:42.24 3.0 undecidable manual Sg 15.89 0
AC.VLO.HHZ. 2021-10-27T17:49:23.50 3.0 undecidable manual Pn -1.08 0
IV.MGR.HHZ. 2021-10-27T17:49:10.18 3.0 positive manual Pg 12.04 0
IV.PAOL.HHZ. 2021-10-27T17:48:53.02 3.0 undecidable manual Pg 10.65 0
IV.MDI.HHZ. 2021-10-27T17:48:48.36 3.0 undecidable manual Pn 1.03 0
IV.TST01.HHZ. 2021-10-27T17:48:40.99 3.0 positive manual Pg 8 0
IV.VAGA.HNZ. 2021-10-27T17:48:34.01 3.0 undecidable manual Pn -2.09 0
IV.TERO.HHZ. 2021-10-27T17:48:34.28 3.0 undecidable manual S 0.64 0
IV.LAV9.HNZ. 2021-10-27T17:48:28.01 3.0 negative manual Pn -0.69 0
IV.IMOL.HNZ. 2021-10-27T17:48:19.71 3.0 positive manual P -0.04 0
IV.CSNT.HHZ. 2021-10-27T17:48:18.65 3.0 positive manual P 0.07 0
IV.FDMO.HHZ. 2021-10-27T17:48:10.61 3.0 negative manual P 0.63 0
IV.CSP1.EHZ. 2021-10-27T17:48:10.65 3.0 negative manual P 0.58 0
IV.ARVD.HHZ. 2021-10-27T17:48:07.04 0.6 undecidable manual S 108 0.1259 139 -0.2 48
IV.NARO.HHZ. 2021-10-27T17:48:07.80 0.6 undecidable manual S 297 0.1601 132 -0.16 48
IV.EL6.EHZ. 2021-10-27T17:48:06.91 1.0 negative manual P 131 0.3148 111 0.15 23
IV.FRON.EHZ. 2021-10-27T17:48:06.11 0.6 undecidable manual S 242 0.0423 165 0.04 50
IV.MPAG.EHZ. 2021-10-27T17:48:06.75 0.6 undecidable manual S 352 0.0917 149 0.09 49
IV.SNTG.HHZ. 2021-10-27T17:48:06.55 0.6 undecidable manual P 157 0.3067 111 -0.08 47
IV.FOSV.EHZ. 2021-10-27T17:48:05.62 0.6 negative manual P 183 0.2428 118 -0.02 48
IV.MURB.HNZ. 2021-10-27T17:48:05.04 3.0 undecidable manual P -0.82 0
IV.ARVD.HHZ. 2021-10-27T17:48:04.07 0.6 undecidable manual P 108 0.1259 139 0.02 50
IV.ATSC.EHN. 2021-10-27T17:48:04.12 0.3 undecidable manual P 210 0.1313 138 0 75
IV.NARO.HHZ. 2021-10-27T17:48:04.42 0.1 negative manual P 297 0.1601 132 -0.05 98
IV.PIEI.HHZ. 2021-10-27T17:48:04.63 0.6 negative manual P 269 0.1754 128 -0.04 49
IV.MPAG.EHZ. 2021-10-27T17:48:03.74 0.3 negative manual P 352 0.0917 149 0.02 75
IV.SSFR.HNN. 2021-10-27T17:48:03.94 0.3 undecidable manual P 178 0.1016 146 0.14 73
IV.FRON.EHZ. 2021-10-27T17:48:03.43 0.1 negative manual P 242 0.0423 165 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FRON.EHE. ML:1 8.874038E-5 0.0512 AML other m 2021-10-27T17:48:06.31
IV.FRON.EHN. ML:1.2 0.0001196725 0.1664 AML other m 2021-10-27T17:48:06.49
IV.MPAG.EHE. ML:0.9 5.70647015E-5 0.0512 AML other m 2021-10-27T17:48:07.07
IV.MPAG.EHN. ML:1 7.42E-5 1.92 AML other m 2021-10-27T17:48:07.97
IV.ARVD.HHE. ML:1.2 0.00012245955 0.0768 AML other m 2021-10-27T17:48:07.27
IV.ARVD.HHN. ML:1.2 0.0001109 0.08 AML other m 2021-10-27T17:48:07.46
IV.NARO.HHN. ML:1.2 9.1953765E-5 0.128 AML other m 2021-10-27T17:48:08.07
IV.NARO.HHE. ML:1.3 0.0001125 0.08 AML other m 2021-10-27T17:48:08.10
IV.PIEI.HHN. ML:0.8 4.138557E-5 0.0768 AML other m 2021-10-27T17:48:08.47
IV.PIEI.HHE. ML:1.1 7.074891E-5 0.0768 AML other m 2021-10-27T17:48:08.54
IV.FOSV.EHE. ML:0.9 3.4715145E-5 0.0896 AML other m 2021-10-27T17:48:10.71
IV.FOSV.EHN. ML:1 4.2315375E-5 0.1536 AML other m 2021-10-27T17:48:10.58
IV.IMOL.HNE. ML:3.1 0.0008283272 0.064 AML other m 2021-10-27T17:48:21.95
IV.IMOL.HNN. ML:3 0.00065254695 0.0512 AML other m 2021-10-27T17:48:57.64
IV.MPAG.HNE. ML:2.1 0.0010210456 0.8704 AML other m 2021-10-27T17:48:14.64
IV.MPAG.HNN. ML:2.2 0.0010601059 0.8832 AML other m 2021-10-27T17:48:14.64
IV.MURB.HHE. ML:1.3 6.983645E-5 0.32 AML other m 2021-10-27T17:48:15.51
IV.MURB.HHN. ML:1.3 6.5907675E-5 0.2176 AML other m 2021-10-27T17:48:13.84
IV.MURB.HNE. ML:1.6 0.00012739435 0.2176 AML other m 2021-10-27T17:48:15.49
IV.MURB.HNN. ML:1.4 8.0677335E-5 0.32 AML other m 2021-10-27T17:48:07.74
IV.SNTG.HHE. ML:0.8 2.4033718E-5 0.192 AML other m 2021-10-27T17:48:14.39
IV.SNTG.HHN. ML:0.7 1.9693665E-5 0.256 AML other m 2021-10-27T17:48:13.60
IV.SNTG.HNE. ML:1.6 0.0001290427 0.896 AML other m 2021-10-27T17:48:20.40
IV.SNTG.HNN. ML:1.6 0.000143837935 0.7424 AML other m 2021-10-27T17:48:10.89
IV.EL6.EHE. ML:1.5 0.00010265611 1.792 AML other m 2021-10-27T17:48:06.26
IV.EL6.EHN. ML:1 4.11865355E-5 0.512 AML other m 2021-10-27T17:48:17.56
IV.FDMO.HHE. ML:0.9 1.264633E-5 0.8064 AML other m 2021-10-27T17:48:28.52
IV.FDMO.HHN. ML:1.1 2.3254E-5 1.4208 AML other m 2021-10-27T17:48:35.88
IV.CSP1.EHE. ML:1.5 6.449082E-5 1.6 AML other m 2021-10-27T17:48:17.90
IV.CSP1.EHN. ML:1.4 5.4607225E-5 1.0368 AML other m 2021-10-27T17:48:13.79
IV.CSNT.HHE. ML:1.1 1.2235225E-5 0.0768 AML other m 2021-10-27T17:48:33.52
IV.CSNT.HHN. ML:1.3 1.3343035E-5 0.8832 AML other m 2021-10-27T17:48:53.04
IV.LAV9.HHE. ML:3 0.00031142375 0.0768 AML other m 2021-10-27T17:48:28.06
IV.LAV9.HHN. ML:3.4 0.00068345785 0.0512 AML other m 2021-10-27T17:48:28.58
IV.LAV9.HNE. ML:3 0.000316858595 0.0768 AML other m 2021-10-27T17:48:28.06
IV.LAV9.HNN. ML:3.3 0.00058391945 0.064 AML other m 2021-10-27T17:48:28.60
IV.VAGA.HHE. ML:2.1 1.934827E-5 1.8944 AML other m 2021-10-27T17:48:35.62
IV.VAGA.HHN. ML:2.3 3.0539615E-5 1.28 AML other m 2021-10-27T17:48:51.40
IV.VAGA.HNE. ML:3.2 0.0002470102 0.7808 AML other m 2021-10-27T17:49:04.20
IV.VAGA.HNN. ML:3.2 0.00026791998 0.8064 AML other m 2021-10-27T17:49:04.19
IV.MDI.HHE. ML:2.7 4.4159385E-5 0.064 AML other m 2021-10-27T17:49:02.73
IV.MDI.HHN. ML:2.8 4.9270935E-5 0.064 AML other m 2021-10-27T17:49:05.28
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