Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 21-10-2021 and time 09:25:29 (UTC) in region 1 km S Rosora (AN)

A magnitude ML 1.1 earthquake occured in region: 1 km S Rosora (AN), on

  • 21-10-2021 09:25:29 (UTC)
  • 21-10-2021 11:25:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4740, 13.0680 at 15 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Rosora AN 1 1985 1985
Mergo AN 2 1037 3022
Castelplanio AN 3 3540 6562
Maiolati Spontini AN 4 6248 12810
Poggio San Marcello AN 4 693 13503
Cupramontana AN 5 4756 18259
Serra San Quirico AN 5 2850 21109
Monte Roberto AN 6 3061 24170
Montecarotto AN 6 1987 26157
Castelbellino AN 7 4947 31104
Serra de' Conti AN 8 3746 34850
San Paolo di Jesi AN 9 933 35783
Apiro MC 10 2280 38063
Staffolo AN 11 2253 40316
Arcevia AN 11 4612 44928
Poggio San Vicino MC 11 246 45174
Genga AN 12 1797 46971
Barbara AN 12 1368 48339
Belvedere Ostrense AN 14 2234 50573
Ostra Vetere AN 15 3311 53884
Jesi AN 15 40399 94283
San Marcello AN 16 2057 96340
Cingoli MC 16 10352 106692
Castelleone di Suasa AN 17 1676 108368
Ostra AN 17 6875 115243
Sassoferrato AN 17 7285 122528
San Lorenzo in Campo PU 18 3414 125942
Monsano AN 18 3405 129347
Cerreto d'Esi AN 18 3817 133164
Morro d'Alba AN 19 1903 135067
Corinaldo AN 20 4998 140065
Santa Maria Nuova AN 20 4179 144244

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km W of Ancona (100861 inhabitants)
41 Km S of Fano (60888 inhabitants)
50 Km S of Pesaro (94582 inhabitants)
65 Km NE of Foligno (57155 inhabitants)
68 Km NE of Perugia (166134 inhabitants)
77 Km SE of Rimini (147750 inhabitants)
96 Km E of Arezzo (99543 inhabitants)
99 Km SE of Cesena (96758 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
Bulletin
Rev1000 		ML 1.1 2021-10-21
09:25:29		 43.4743 13.0682 15 2022-03-30
13:04:38		 Bollettino Sismico Italiano INGV 101216791
Reviewed
Rev100 		ML 1.2 2021-10-21
09:25:28		 43.4812 13.0767 19 2021-10-21
09:35:24		 Sala Sismica INGV-Roma 96837281
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-21 09:25:29 ± 0.1
Latitude 43.4743 ± 0.0036
Longitude 13.0682 ± 0.0037
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 101216791

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 470
Semi-minor axis of confidence ellipse (meter) 27
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 218
Circular confidence region, given by single value of horizontal uncertainty (meter) 470.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 212
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.09
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.25181
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 96837281
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-21 09:35:24

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 101216791
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-21 11:36:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.ENR.HHZ. 2021-10-21T09:27:21.43 3.0 undecidable manual Sg 15.64 0
IV.CDRU.HNZ. 2021-10-21T09:27:14.25 3.0 undecidable manual Sn 4.6 0
IV.MCRV.HHZ. 2021-10-21T09:27:12.39 3.0 undecidable manual Sg 10.23 0
IV.ISPIC.EHZ. 2021-10-21T09:27:06.09 3.0 undecidable manual Pn -2.87 0
IV.HVIT.HHZ. 2021-10-21T09:27:05.65 3.0 undecidable manual Pn 0.38 0
IX.SCL3.EHZ.02 2021-10-21T09:27:04.79 3.0 undecidable manual Sn -2.39 0
IX.SFL3.HNZ.01 2021-10-21T09:27:02.02 3.0 undecidable manual Sn -3.88 0
IV.CAFE.HHZ. 2021-10-21T09:26:52.56 3.0 undecidable manual Sn -5.04 0
IV.TST02.HHZ. 2021-10-21T09:26:36.12 3.0 undecidable manual Sg 6.39 0
IV.SENA.HHZ. 2021-10-21T09:26:32.46 3.0 positive manual Pg 6.01 0
IV.MSSA.HHZ. 2021-10-21T09:26:32.97 3.0 undecidable manual Sn 3.81 0
IV.ZEN8.EHZ. 2021-10-21T09:26:29.03 3.0 undecidable manual Sg 3.7 0
IX.SRN3.HHZ.02 2021-10-21T09:26:24.64 3.0 negative manual Pn 1.57 0
IV.MAGA.HHZ. 2021-10-21T09:26:24.09 3.0 undecidable manual Sn -4.93 0
IV.MTMR.HNZ. 2021-10-21T09:26:17.18 3.0 undecidable manual Pn 1.59 0
IV.RIBO.EHZ.01 2021-10-21T09:26:12.33 3.0 undecidable manual S 0.95 0
IV.MSSA.HHZ. 2021-10-21T09:26:03.71 3.0 undecidable manual Pg 4.2 0
IV.FIR.HHZ. 2021-10-21T09:25:55.28 3.0 undecidable manual Sn -3.39 0
GU.CARD.HHZ. 2021-10-21T09:25:49.86 3.0 undecidable manual Pn 0.15 0
IV.VISG.HHZ. 2021-10-21T09:25:41.19 3.0 positive manual Pg 1 0
IV.FRON.EHZ. 2021-10-21T09:25:39.45 0.6 undecidable manual S 280 27.9498 103 0.29 46
IV.SNTG.HHZ. 2021-10-21T09:25:38.73 0.6 undecidable manual S 203 26.4513 105 -0.02 49
IV.SSFR.HNN. 2021-10-21T09:25:37.96 0.6 undecidable manual S 260 23.3544 108 -0.02 49
IV.CING.HHZ. 2021-10-21T09:25:36.02 0.6 undecidable manual S 137 14.9739 123 0.08 49
IV.EL6.EHZ. 2021-10-21T09:25:36.28 0.6 undecidable manual S 170 16.2726 120 0.04 49
IV.IMOL.HNZ. 2021-10-21T09:25:36.26 3.0 undecidable manual Pn -1.09 0
IV.SSFR.HNN. 2021-10-21T09:25:34.16 0.3 undecidable manual P 260 23.3544 108 -0.07 73
IV.FRON.EHZ. 2021-10-21T09:25:34.86 0.3 undecidable manual P 280 27.9498 103 -0.05 72
IV.ARVD.HHZ. 2021-10-21T09:25:34.96 0.3 undecidable manual S 285 10.4784 136 -0.06 74
IV.SNTG.HHZ. 2021-10-21T09:25:34.53 0.3 undecidable manual P 203 26.4513 105 -0.15 71
IV.CING.HHZ. 2021-10-21T09:25:33.12 0.1 undecidable manual P 137 14.9739 123 0.06 99
IV.EL6.EHZ. 2021-10-21T09:25:33.22 0.3 undecidable manual P 170 16.2726 120 -0.01 74
IV.ARVD.HHZ. 2021-10-21T09:25:32.52 0.1 negative manual P 285 10.4784 136 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARVD.HHN. ML:1.0 0.00008474999999999999 0.16 AML other m 2021-10-21T09:25:35.00
IV.ARVD.HHE. ML:1.3 0.00017749999999999998 0.58 AML other m 2021-10-21T09:25:35.31
IV.EL6.EHE. ML:1.2 0.00013385 0.4 AML other m 2021-10-21T09:25:36.68
IV.EL6.EHN. ML:1.2 0.00010900000000000002 0.7 AML other m 2021-10-21T09:25:36.56
IV.CING.HHN. ML:0.9 0.00006565 0.14 AML other m 2021-10-21T09:25:36.79
IV.CING.HHE. ML:1.0 0.00008545 1.02 AML other m 2021-10-21T09:25:37.74
IV.SNTG.HHN. ML:1.3 0.00009305 1.64 AML other m 2021-10-21T09:25:38.07
IV.SNTG.HHE. ML:1.0 0.000050549999999999995 1.6 AML other m 2021-10-21T09:25:38.10
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