Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 18-04-2023 and time 21:03:44 (UTC) in region 2 km SE Serra Sant'Abbondio (PU)

A magnitude ML 1.0 earthquake occured in region: 2 km SE Serra Sant'Abbondio (PU), on

  • 18-04-2023 21:03:44 (UTC)
  • 18-04-2023 23:03:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4770, 12.7780 at 13 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
Serra Sant'Abbondio PU 2 1027 1027
Frontone PU 5 1300 2327
Sassoferrato AN 8 7285 9612
Pergola PU 11 6333 15945
Scheggia e Pascelupo PG 12 1393 17338
Cantiano PU 12 2245 19583
Cagli PU 13 8731 28314
Arcevia AN 13 4612 32926
Genga AN 14 1797 34723
Costacciaro PG 14 1216 35939
Sigillo PG 16 2404 38343
Acqualagna PU 18 4393 42736
Fabriano AN 19 31480 74216
Serra San Quirico AN 20 2850 77066
San Lorenzo in Campo PU 20 3414 80480
Fratte Rosa PU 20 966 81446

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km SW of Fano (60888 inhabitants)
50 Km S of Pesaro (94582 inhabitants)
52 Km NE of Perugia (166134 inhabitants)
58 Km N of Foligno (57155 inhabitants)
62 Km W of Ancona (100861 inhabitants)
67 Km S of Rimini (147750 inhabitants)
72 Km E of Arezzo (99543 inhabitants)
85 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 1.0 2023-04-18
21:03:44		 43.4773 12.778 13 2024-03-01
17:18:20		 Bollettino Sismico Italiano INGV 125172491
Reviewed
Rev100 		ML 1.1 2023-04-18
21:03:44		 43.4833 12.7678 15 2023-04-18
21:39:46		 Sala Sismica INGV-Roma 116497661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-18 21:03:44 ± 0.04
Latitude 43.4773 ± 0.0018
Longitude 12.7780 ± 0.0025
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 125172491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 249
Semi-minor axis of confidence ellipse (meter) 55
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 199
Circular confidence region, given by single value of horizontal uncertainty (meter) 250.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 38
Number of associated phases, regardless of their use for origin computation 72
Number of defining phases 72
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.04137
Epicentral distance of station farthest from the epicenter (degree) 0.70237
Number of stations at which the event was observed 38
Number of stations from which data was used for origin computation 38
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 125172491
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2024-02-09 17:07:23

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 116497661
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-18 21:39:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHN. 2023-04-18T21:04:02.43 0.6 undecidable manual S 153 54.9006 93 0.42 42
IV.PF6.EHN. 2023-04-18T21:04:01.23 0.6 undecidable manual S 138 50.5161 93 0.4 43
IV.CESI.HHZ. 2023-04-18T21:04:01.97 0.6 undecidable manual S 169 53.4021 93 0.36 43
IV.CSP1.EHZ. 2023-04-18T21:04:01.91 0.6 undecidable manual S 141 54.9006 93 -0.11 45
IV.CPGN.EHZ. 2023-04-18T21:04:01.09 0.6 undecidable manual S 315 51.4152 93 0.03 46
IV.ASSB.HHZ. 2023-04-18T21:04:00.87 0.6 undecidable manual S 191 49.2174 93 0.38 43
IV.PARC.HHZ. 2023-04-18T21:04:00.17 0.6 undecidable manual S 294 47.3193 93 0.18 45
IV.BADI.EHE. 2023-04-18T21:03:59.34 0.6 undecidable manual S 275 43.1235 94 0.48 42
IV.MML1.EHZ. 2023-04-18T21:03:59.26 0.6 undecidable manual S 159 43.3233 94 0.35 44
IV.ATMC.EHE. 2023-04-18T21:03:59.80 0.6 undecidable manual S 266 47.2194 93 -0.17 45
IV.MMO1.EHN. 2023-04-18T21:03:58.29 0.1 undecidable manual P 145 77.9664 92 -0.04 87
7F.SIB2.EHE. 2023-04-18T21:03:58.03 0.6 undecidable manual P 147 77.6667 92 -0.25 42
IV.NRCA.HHZ. 2023-04-18T21:03:57.78 1.0 undecidable manual P 159 76.4679 92 -0.3 21
IV.CING.HHZ. 2023-04-18T21:03:57.15 0.6 undecidable manual S 108 35.4423 95 0.32 44
7F.SIB1.EHE. 2023-04-18T21:03:57.93 0.1 undecidable manual P 148 75.8685 92 -0.07 87
IV.ATLO.EHE. 2023-04-18T21:03:56.85 0.6 undecidable manual S 239 34.8429 95 0.18 46
IV.ATCC.EHZ. 2023-04-18T21:03:56.88 0.6 undecidable manual S 199 34.2435 95 0.37 44
IV.MURB.HHE. 2023-04-18T21:03:56.17 0.6 undecidable manual S 221 31.3464 96 0.44 44
IV.PE3.EHE. 2023-04-18T21:03:56.69 0.6 undecidable manual S 317 33.1446 96 0.47 43
IV.CRTC.HNE. 2023-04-18T21:03:56.77 0.6 undecidable manual S 15 33.3444 95 0.5 43
IV.EL6.EHZ. 2023-04-18T21:03:56.05 0.6 undecidable manual S 122 30.8469 96 0.45 44
IV.SNTG.HHZ. 2023-04-18T21:03:55.11 0.6 undecidable manual S 152 27.9498 97 0.28 46
IV.ATPI.EHE. 2023-04-18T21:03:55.79 0.6 undecidable manual S 265 30.4473 96 0.31 45
IV.APEC.HNN. 2023-04-18T21:03:55.65 0.6 undecidable manual S 287 30.1476 96 0.22 46
IV.ATVO.HHZ. 2023-04-18T21:03:55.96 0.6 undecidable manual S 251 31.746 96 0.12 47
IV.CSP1.EHZ. 2023-04-18T21:03:54.54 0.3 undecidable manual P 141 54.9006 93 -0.23 66
IV.ATPC.HNZ. 2023-04-18T21:03:54.57 0.6 undecidable manual S 271 25.8519 99 0.29 46
IV.CPGN.EHZ. 2023-04-18T21:03:54.72 0.6 undecidable manual P 315 51.4152 93 0.49 41
IV.COR1.HNZ. 2023-04-18T21:03:54.59 0.6 undecidable manual S 46 24.753 99 0.6 42
IV.FDMO.HHN. 2023-04-18T21:03:54.38 0.1 undecidable manual P 153 54.9006 93 -0.39 85
IV.CESI.HHZ. 2023-04-18T21:03:54.08 0.1 undecidable manual P 169 53.4021 93 -0.46 84
IV.ATFO.HHZ. 2023-04-18T21:03:53.05 0.6 undecidable manual S 234 20.6682 103 0.12 48
IV.PARC.HHZ. 2023-04-18T21:03:53.51 0.1 undecidable manual P 294 47.3193 93 -0.1 91
IV.ATMC.EHE. 2023-04-18T21:03:53.44 0.1 undecidable manual P 266 47.2194 93 -0.15 90
IV.ASSB.HHZ. 2023-04-18T21:03:53.60 0.6 undecidable manual P 191 49.2174 93 -0.29 44
IV.PF6.EHN. 2023-04-18T21:03:53.87 0.1 undecidable manual P 138 50.5161 93 -0.22 89
IV.MML1.EHZ. 2023-04-18T21:03:52.67 0.1 undecidable manual P 159 43.3233 94 -0.31 88
IV.PIEI.HHZ. 2023-04-18T21:03:52.58 0.6 undecidable manual S 288 20.5683 103 -0.32 45
IV.ATBU.EHZ. 2023-04-18T21:03:52.56 0.6 undecidable manual S 270 18.4704 107 0.2 47
IV.BADI.EHE. 2023-04-18T21:03:52.89 0.1 undecidable manual P 275 43.1235 94 -0.06 93
IV.FOSV.EHZ. 2023-04-18T21:03:52.73 0.6 undecidable manual S 184 20.2686 104 -0.1 48
IV.MMUR.HNZ. 2023-04-18T21:03:52.26 0.6 undecidable manual S 103 18.0708 107 0 49
IV.NARO.HHZ. 2023-04-18T21:03:52.87 0.6 undecidable manual S 313 21.6672 102 -0.32 45
IV.EL6.EHZ. 2023-04-18T21:03:51.02 0.6 undecidable manual P 122 30.8469 96 -0.04 48
IV.MPAG.EHZ. 2023-04-18T21:03:51.75 0.6 undecidable manual S 355 16.872 110 -0.21 47
IV.APEC.HNN. 2023-04-18T21:03:51.16 0.1 undecidable manual P 287 30.1476 96 0.19 92
IV.ATVO.HHZ. 2023-04-18T21:03:51.00 0.1 undecidable manual P 251 31.746 96 -0.21 92
IV.ATLO.EHE. 2023-04-18T21:03:51.59 0.1 undecidable manual P 239 34.8429 95 -0.1 93
IV.ATCC.EHZ. 2023-04-18T21:03:51.58 0.3 negative manual P 199 34.2435 95 -0.02 71
IV.MURB.HHE. 2023-04-18T21:03:51.54 0.1 undecidable manual P 221 31.3464 96 0.39 88
IV.CING.HHZ. 2023-04-18T21:03:51.73 0.1 undecidable manual P 108 35.4423 95 -0.05 94
IV.PE3.EHE. 2023-04-18T21:03:51.43 0.1 undecidable manual P 317 33.1446 96 0 95
IV.CRTC.HNE. 2023-04-18T21:03:51.68 1.0 undecidable manual P 15 33.3444 95 0.22 23
IV.ARVD.HHZ. 2023-04-18T21:03:51.02 0.6 undecidable manual S 80 13.3755 120 -0.07 48
IV.ATSC.EHZ. 2023-04-18T21:03:50.31 0.6 undecidable manual S 231 9.4794 134 0.05 49
IV.ATPI.EHE. 2023-04-18T21:03:50.89 0.1 undecidable manual P 265 30.4473 96 -0.11 94
IV.ATPC.HNZ. 2023-04-18T21:03:50.22 0.1 undecidable manual P 271 25.8519 99 -0.09 95
IV.SNTG.HHZ. 2023-04-18T21:03:50.31 0.1 undecidable manual P 152 27.9498 97 -0.31 90
IV.COR1.HNZ. 2023-04-18T21:03:50.51 0.1 undecidable manual P 46 24.753 99 0.37 90
IV.FOSV.EHZ. 2023-04-18T21:03:49.29 0.1 undecidable manual P 184 20.2686 104 -0.18 94
IV.MMUR.HNZ. 2023-04-18T21:03:49.11 0.1 undecidable manual P 103 18.0708 107 -0.03 97
IV.NARO.HHZ. 2023-04-18T21:03:49.37 0.1 undecidable manual P 313 21.6672 102 -0.31 91
IV.FRON.EHZ. 2023-04-18T21:03:49.70 0.6 undecidable manual S 317 6.1938 148 0 49
IV.ATFO.HHZ. 2023-04-18T21:03:49.43 0.1 undecidable manual P 234 20.6682 103 -0.1 96
IV.SSFR.HHZ. 2023-04-18T21:03:49.59 0.6 undecidable manual S 176 4.5954 156 0.09 50
IV.PIEI.HHZ. 2023-04-18T21:03:49.19 0.1 negative manual P 288 20.5683 103 -0.32 91
IV.ATBU.EHZ. 2023-04-18T21:03:49.24 0.1 undecidable manual P 270 18.4704 107 0.04 97
IV.ARVD.HHZ. 2023-04-18T21:03:48.36 0.1 undecidable manual P 80 13.3755 120 -0.11 96
IV.ATSC.EHZ. 2023-04-18T21:03:48.00 0.1 undecidable manual P 231 9.4794 134 0.01 99
IV.MPAG.EHZ. 2023-04-18T21:03:48.74 0.3 undecidable manual P 355 16.872 110 -0.22 70
IV.SSFR.HHZ. 2023-04-18T21:03:47.62 0.1 undecidable manual P 176 4.5954 156 0.07 100
IV.FRON.EHZ. 2023-04-18T21:03:47.58 0.1 undecidable manual P 317 6.1938 148 -0.09 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FRON.EHE. ML:1.1 0.0001555 1.92 AML other m 2023-04-18T21:03:49.98
IV.FRON.EHN. ML:1.3 0.000251 0.98 AML other m 2023-04-18T21:03:50.05
IV.ARVD.HHN. ML:1.1 0.0001046 0.34 AML other m 2023-04-18T21:03:51.25
IV.ARVD.HHE. ML:0.8 0.0000618 0.38 AML other m 2023-04-18T21:03:51.40
IV.PIEI.HHN. ML:1.1 0.0000885 0.48 AML other m 2023-04-18T21:03:52.75
IV.FOSV.EHN. ML:1.1 0.0000922 1.82 AML other m 2023-04-18T21:03:52.00
IV.PIEI.HHE. ML:1.4 0.000155 1.84 AML other m 2023-04-18T21:03:52.00
IV.FOSV.EHE. ML:1.1 0.00009029999999999999 0.1 AML other m 2023-04-18T21:03:52.90
IV.ATFO.HHN. ML:1.0 0.00006455 1.26 AML other m 2023-04-18T21:03:53.14
IV.ATFO.HHE. ML:1.0 0.00007295 1.54 AML other m 2023-04-18T21:03:53.93
IV.MML1.EHN. ML:0.8 0.000019900000000000003 0.82 AML other m 2023-04-18T21:03:55.58
IV.ATVO.HHN. ML:0.9 0.000034049999999999994 0.84 AML other m 2023-04-18T21:03:56.49
IV.ATVO.HHE. ML:0.8 0.000032 0.38 AML other m 2023-04-18T21:03:56.35
IV.SNTG.HHN. ML:0.9 0.0000392 0.74 AML other m 2023-04-18T21:03:56.57
IV.SNTG.HHE. ML:0.7 0.0000241 0.74 AML other m 2023-04-18T21:03:57.16
IV.ATCC.EHN. ML:1.1 0.000056550000000000006 0.3 AML other m 2023-04-18T21:03:57.49
IV.ATCC.EHE. ML:1.1 0.00004995 1.02 AML other m 2023-04-18T21:03:57.59
IV.ASSB.HHE. ML:0.8 0.00001565 1.2 AML other m 2023-04-18T21:04:02.14
IV.MML1.EHE. ML:0.7 0.0000174 0.66 AML other m 2023-04-18T21:04:05.53
IV.ASSB.HHN. ML:0.9 0.0000195 0.7 AML other m 2023-04-18T21:04:06.40
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