Earthquake with magnitude of ML 1.0 on date 27-09-2021 and time 14:33:47 (Italy) in region 2 km SW Serra San Quirico (AN)

A magnitude ML 1.0 earthquake occured in region: 2 km SW Serra San Quirico (AN), on

  • 27-09-2021 12:33:47 (UTC)
  • 27-09-2021 14:33:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.44, 12.998 at 2 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
Serra San Quirico AN 2 2850 2850
Mergo AN 5 1037 3887
Genga AN 5 1797 5684
Rosora AN 8 1985 7669
Arcevia AN 8 4612 12281
Castelplanio AN 9 3540 15821
Cupramontana AN 10 4756 20577
Poggio San Vicino MC 10 246 20823
Poggio San Marcello AN 10 693 21516
Maiolati Spontini AN 11 6248 27764
Montecarotto AN 11 1987 29751
Sassoferrato AN 11 7285 37036
Serra de' Conti AN 12 3746 40782
Apiro MC 12 2280 43062
Monte Roberto AN 12 3061 46123
Castelbellino AN 13 4947 51070
Cerreto d'Esi AN 13 3817 54887
Fabriano AN 14 31480 86367
San Paolo di Jesi AN 14 933 87300
Staffolo AN 15 2253 89553
Barbara AN 16 1368 90921
San Lorenzo in Campo PU 19 3414 94335
Castelleone di Suasa AN 19 1676 96011
Pergola PU 19 6333 102344
Ostra Vetere AN 19 3311 105655
Cingoli MC 19 10352 116007
Serra Sant'Abbondio PU 19 1027 117034

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km S of Fano (60888 inhabitants)
47 Km W of Ancona (100861 inhabitants)
53 Km S of Pesaro (94582 inhabitants)
59 Km NE of Foligno (57155 inhabitants)
62 Km NE of Perugia (166134 inhabitants)
77 Km SE of Rimini (147750 inhabitants)
90 Km E of Arezzo (99543 inhabitants)
98 Km SE of Cesena (96758 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 1.0 2021-09-27
12:33:47
43.4398 12.9978 2 2021-09-27
12:43:26
Sala Sismica INGV-Roma 95947451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-27 12:33:47 ± 0.11
Latitude 43.4398 ± 0.0045
Longitude 12.9978 ± 0.0062
Depth (km) 2 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95947451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 577
Semi-minor axis of confidence ellipse (meter) 290
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 219
Circular confidence region, given by single value of horizontal uncertainty (meter) 580
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 113
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.25631
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 95947451
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-27 12:43:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IX.STN3.HNZ.01 2021-09-27T12:35:41.34 3.0 undecidable manual Sg 9.03 0
GU.STV.HHZ. 2021-09-27T12:35:27.85 3.0 undecidable manual Sg 10.12 0
OT.OT05.EHZ. 2021-09-27T12:35:21.68 3.0 undecidable manual Sg 10.2 0
IV.SERS.HHZ. 2021-09-27T12:35:16.16 3.0 undecidable manual Pg 11 0
IV.MARS.HNZ. 2021-09-27T12:35:15.47 3.0 undecidable manual Pg 7.62 0
MN.PDG.HHZ. 2021-09-27T12:35:14.36 3.0 positive manual Pg 15.48 0
OT.OT13.EHZ. 2021-09-27T12:35:11.47 3.0 undecidable manual Sn -5.12 0
MN.VAE.HHZ. 2021-09-27T12:35:08.96 3.0 positive manual Pn -5.62 0
IV.COLB.HHZ. 2021-09-27T12:35:07.20 3.0 undecidable manual Sn -4.32 0
IV.VITU.HHZ. 2021-09-27T12:35:01.05 3.0 undecidable manual Sn -7.21 0
IV.QLNO.HHZ. 2021-09-27T12:35:00.93 3.0 undecidable manual Sn 0.66 0
CR.STON.BHZ. 2021-09-27T12:34:57.52 3.0 undecidable manual Pg 15.56 0
IX.SCL3.EHZ.02 2021-09-27T12:34:42.31 3.0 negative manual Pg 2.9 0
IV.LAV9.HNZ. 2021-09-27T12:34:39.89 3.0 undecidable manual Sn -3.17 0
IV.MNTV.EHZ. 2021-09-27T12:34:35.44 3.0 undecidable manual Sg 2.46 0
OT.OT17.EHZ. 2021-09-27T12:34:33.53 3.0 positive manual Pg 5.17 0
GU.IMI.HHZ. 2021-09-27T12:34:28.46 3.0 undecidable manual Pn 0.45 0
IT.GLNS.HNZ. 2021-09-27T12:34:26.43 3.0 undecidable manual Pg 3.57 0
GU.ROTM.HHZ. 2021-09-27T12:34:24.38 3.0 undecidable manual Pn -1.55 0
IV.CTI.HHZ. 2021-09-27T12:34:18.77 3.0 undecidable manual Pg 1.66 0
IV.TST02.HHZ. 2021-09-27T12:34:17.69 3.0 negative manual Pg -0.73 0
IV.LAV9.HNZ. 2021-09-27T12:34:09.64 3.0 negative manual Pn -4.79 0
IV.MPAG.EHZ. 2021-09-27T12:33:58.25 0.3 undecidable manual S 318 0.2563 95 0.48 65
IV.FIR.HHZ. 2021-09-27T12:33:57.26 3.0 undecidable manual S -6.56 0
IV.FRON.EHE. 2021-09-27T12:33:56.52 0.3 undecidable manual S 292 0.2122 96 0.44 66
IV.ATSC.EHN. 2021-09-27T12:33:56.98 0.6 undecidable manual S 266 0.2266 95 0.35 45
IV.SNTG.HHZ. 2021-09-27T12:33:55.19 0.6 undecidable manual S 193 0.1889 96 -0.01 48
IV.CING.HHZ. 2021-09-27T12:33:54.30 0.6 undecidable manual S 114 0.1574 98 0.32 45
IV.SSFR.HHN. 2021-09-27T12:33:54.20 0.3 undecidable manual S 269 0.1565 98 0.25 69
IV.EL6.EHZ. 2021-09-27T12:33:53.36 0.3 undecidable manual S 146 0.134 99 0.28 69
IV.MPAG.EHZ. 2021-09-27T12:33:53.27 0.1 undecidable manual P 318 0.2563 95 -0.31 89
IV.SNTG.HHZ. 2021-09-27T12:33:52.07 0.3 negative manual P 193 0.1889 96 -0.03 72
IV.ATSC.EHN. 2021-09-27T12:33:52.68 0.1 undecidable manual P 266 0.2266 95 -0.25 91
IV.FRON.EHE. 2021-09-27T12:33:52.22 0.1 undecidable manual P 292 0.2122 96 -0.39 89
IV.ARVD.HHZ. 2021-09-27T12:33:51.05 0.6 undecidable manual S 325 0.071 106 0.33 46
IV.COR1.EHE. 2021-09-27T12:33:51.91 0.1 undecidable manual P 1 0.1916 96 -0.25 92
IV.CING.HHZ. 2021-09-27T12:33:51.55 0.3 negative manual P 114 0.1574 98 0.16 71
IV.SSFR.HHN. 2021-09-27T12:33:50.91 0.1 undecidable manual P 269 0.1565 98 -0.47 88
IV.EL6.EHZ. 2021-09-27T12:33:50.64 1.0 positive manual P 146 0.134 99 -0.24 23
IV.ARVD.HHZ. 2021-09-27T12:33:49.70 0.1 negative manual P 325 0.071 106 0.18 95
IV.IMOL.HNZ. 2021-09-27T12:33:49.40 3.0 negative manual P -3.03 0
IV.MMUR.HNZ. 2021-09-27T12:33:48.56 0.1 undecidable manual S 351 0.0018 174 -0.12 98
IV.MMUR.HNZ. 2021-09-27T12:33:48.33 0.1 negative manual P 351 0.0018 174 -0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARVD.HHE. ML:0 0.00019 0.86 AML other m 2021-09-27T12:33:51.02
IV.ARVD.HHN. ML:0 0.000228 1.24 AML other m 2021-09-27T12:33:52.99
IV.SNTG.HHE. ML:0.8 5.445E-5 0.32 AML other m 2021-09-27T12:33:55.67
IV.EL6.EHE. ML:1.1 0.000157 0.4 AML other m 2021-09-27T12:33:55.69
IV.EL6.EHN. ML:1.1 0.0001348 0.92 AML other m 2021-09-27T12:33:56.51
IV.SNTG.HHN. ML:0.8 4.735E-5 0.24 AML other m 2021-09-27T12:33:57.51
IV.FDMO.HHN. ML:1 2.87E-5 0.42 AML other m 2021-09-27T12:34:00.04
IV.MURB.HHN. ML:1.3 6.185E-5 0.28 AML other m 2021-09-27T12:34:05.26
IV.MURB.HHE. ML:1.4 8.73E-5 1.28 AML other m 2021-09-27T12:34:05.20
IV.IMOL.HNN. ML:3.4 0.00138 0.38 AML other m 2021-09-27T12:34:17.27
IV.IMOL.HNE. ML:3.4 0.001385 0.06 AML other m 2021-09-27T12:34:18.29
IV.FDMO.HHE. ML:0.9 2.735E-5 0.44 AML other m 2021-09-27T12:34:19.32
IV.TST02.HHE. ML:0 0.00135 0.36 AML other m 2021-09-27T12:34:19.54
IV.TST02.HHN. ML:0 0.000736 1.6 AML other m 2021-09-27T12:34:23.02
IV.MNTT.EHE. ML:0 0.00116 0.52 AML other m 2021-09-27T12:34:30.40
IV.MNTT.EHN. ML:0 0.000473 1.2 AML other m 2021-09-27T12:34:31.76
IV.CTI.HHN. ML:0 7.11E-5 0.2 AML other m 2021-09-27T12:34:34.69
IV.MNTV.EHN. ML:0 0.0008885 1.66 AML other m 2021-09-27T12:34:34.93
IV.CTI.HHE. ML:0 5.95E-5 1.36 AML other m 2021-09-27T12:34:37.02
IV.MNTV.EHE. ML:0 0.000878 0.26 AML other m 2021-09-27T12:34:39.68
IX.SCL3.EHN.02 ML:0 0.000609 0.96 AML other m 2021-09-27T12:34:42.61
IX.SCL3.EHE.02 ML:0 0.000578 1 AML other m 2021-09-27T12:34:43.35
GU.ROTM.HHE. ML:0 0.00083 0.12 AML other m 2021-09-27T12:35:25.21
GU.ROTM.HHN. ML:0 0.001715 0.92 AML other m 2021-09-27T12:35:27.46
IV.MMUR.HNE. ML:0 0.006608632 0.1728 AML other m 2021-09-27T12:33:49.15
IV.MMUR.HNN. ML:0 0.0043366955 0.0832 AML other m 2021-09-27T12:33:48.82
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