Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 22-04-2023 and time 19:23:48 (UTC) in region 2 km W Fiastra (MC)

A magnitude ML 1.4 earthquake occured in region: 2 km W Fiastra (MC), on

  • 22-04-2023 19:23:48 (UTC)
  • 22-04-2023 21:23:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0430, 13.1280 at 9 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
Fiastra MC 3 559 559
Fiordimonte MC 3 202 761
Pievebovigliana MC 4 866 1627
Acquacanina MC 4 121 1748
Pieve Torina MC 6 1458 3206
Muccia MC 8 915 4121
Bolognola MC 10 142 4263
Ussita MC 11 444 4707
Camerino MC 11 6974 11681
Monte Cavallo MC 12 145 11826
Visso MC 13 1107 12933
Cessapalombo MC 13 512 13445
Caldarola MC 13 1823 15268
Sarnano MC 14 3264 18532
Serravalle di Chienti MC 15 1070 19602
Camporotondo di Fiastrone MC 15 563 20165
Serrapetrona MC 16 966 21131
Belforte del Chienti MC 16 1886 23017
Castelsantangelo sul Nera MC 17 281 23298
San Ginesio MC 17 3498 26796
Gualdo MC 17 815 27611
Sefro MC 19 422 28033
Pioraco MC 19 1134 29167
Castelraimondo MC 20 4587 33754
Preci PG 20 724 34478
Amandola FM 20 3629 38107

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Foligno (57155 inhabitants)
60 Km E of Perugia (166134 inhabitants)
64 Km NW of Teramo (54892 inhabitants)
66 Km NE of Terni (111501 inhabitants)
71 Km SW of Ancona (100861 inhabitants)
80 Km N of L'Aquila (69753 inhabitants)
90 Km S of Fano (60888 inhabitants)
98 Km S of Pesaro (94582 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 1.4 2023-04-22
19:23:48		 43.043 13.128 9 2024-03-01
17:18:09		 Bollettino Sismico Italiano INGV 117446671
Reviewed
Rev100 		ML 1.5 2023-04-22
19:23:48		 43.0413 13.1297 9 2023-04-22
19:33:03		 Sala Sismica INGV-Roma 116619231
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-22 19:23:48 ± 0.04
Latitude 43.0430 ± 0.0018
Longitude 13.1280 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 117446671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 276
Semi-minor axis of confidence ellipse (meter) 150
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 65
Circular confidence region, given by single value of horizontal uncertainty (meter) 280.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 32
Number of associated phases, regardless of their use for origin computation 67
Number of defining phases 67
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.03058
Epicentral distance of station farthest from the epicenter (degree) 0.69338
Number of stations at which the event was observed 37
Number of stations from which data was used for origin computation 37
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 46
Type of magnitude ML
Reference to an origin 116619231
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-22 19:33:03

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 42
Type of magnitude ML
Reference to an origin 117446671
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-05-18 10:26:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2023-04-22T19:24:11.92 0.3 undecidable manual S 319 72.6717 50 0.81 53
IV.TERO.HHZ. 2023-04-22T19:24:08.24 0.3 undecidable manual S 140 60.5949 50 0.35 63
IV.RM33.EHZ. 2023-04-22T19:24:07.99 0.6 undecidable manual S 173 59.6958 50 0.35 42
IV.MURB.HHZ. 2023-04-22T19:24:07.05 0.3 undecidable manual S 297 54.6009 50 0.76 56
IV.ARVD.HHZ. 2023-04-22T19:24:06.21 0.3 undecidable manual S 343 52.7028 50 0.44 63
IV.SMA1.EHZ. 2023-04-22T19:24:04.95 0.3 undecidable manual S 160 48.8178 50 0.22 67
IV.LNSS.HHZ. 2023-04-22T19:24:04.81 0.6 undecidable manual S 188 49.3173 50 -0.07 46
IV.ATCC.EHZ. 2023-04-22T19:24:03.51 0.3 undecidable manual S 292 42.5241 50 0.44 64
IV.GAVE.EHZ. 2023-04-22T19:24:03.32 0.6 undecidable manual S 206 43.3233 50 0.05 47
IV.NARO.HHZ. 2023-04-22T19:24:02.18 0.3 undecidable manual P 325 76.9674 50 -0.16 64
IV.GIGS.HHZ. 2023-04-22T19:24:01.80 1.0 positive manual P 151 74.7696 50 -0.22 21
IV.CING.HHZ. 2023-04-22T19:24:01.33 0.6 undecidable manual S 8 37.3293 50 -0.34 44
IV.ASSB.HHZ. 2023-04-22T19:24:01.75 0.3 undecidable manual S 270 38.0286 50 -0.12 69
IV.MPAG.EHZ. 2023-04-22T19:24:01.99 1.0 negative manual P 336 71.4729 50 0.49 20
IV.PIEI.HHZ. 2023-04-22T19:24:01.47 0.3 undecidable manual P 319 72.6717 50 -0.21 64
IV.EL6.EHZ. 2023-04-22T19:23:59.69 0.6 undecidable manual S 356 31.8459 50 -0.52 43
IV.MF5.EHZ. 2023-04-22T19:23:59.51 0.3 undecidable manual S 103 27.5502 108 0.63 62
IV.RM33.EHZ. 2023-04-22T19:23:59.37 1.0 positive manual P 173 59.6958 50 -0.31 21
IV.TERO.HHZ. 2023-04-22T19:23:59.97 0.6 undecidable manual P 140 60.5949 50 0.14 44
IV.ARRO.EHZ. 2023-04-22T19:23:59.47 1.0 negative manual P 210 59.2962 50 -0.16 22
IV.ATFO.HHZ. 2023-04-22T19:23:59.31 0.6 positive manual P 309 57.5979 50 -0.04 45
IV.MOMA.HHZ. 2023-04-22T19:23:58.35 0.6 positive manual P 240 52.503 50 -0.23 44
IV.MURB.HHZ. 2023-04-22T19:23:58.94 0.1 negative manual P 297 54.6009 50 0.04 91
IV.SAP2.EHZ. 2023-04-22T19:23:58.06 0.6 undecidable manual S 75 22.755 112 0.76 40
IV.ARVD.HHZ. 2023-04-22T19:23:58.61 0.6 undecidable manual P 343 52.7028 50 0.01 46
IV.SNTG.HHZ. 2023-04-22T19:23:58.71 0.3 undecidable manual S 327 27.9498 108 -0.3 68
IV.LNSS.HHZ. 2023-04-22T19:23:57.63 0.3 undecidable manual P 188 49.3173 50 -0.46 63
IV.NRCA.HHZ. 2023-04-22T19:23:57.06 0.6 undecidable manual S 183 23.2545 111 -0.4 45
IV.GAG1.HNZ. 2023-04-22T19:23:57.10 0.6 undecidable manual S 347 22.1556 112 -0.01 49
IV.SMA1.EHZ. 2023-04-22T19:23:57.58 0.3 undecidable manual P 160 48.8178 50 -0.42 64
IV.GAVE.EHZ. 2023-04-22T19:23:56.93 0.1 positive manual P 206 43.3233 50 -0.23 90
IV.CESI.HHZ. 2023-04-22T19:23:56.32 0.6 undecidable manual S 257 18.5703 116 0.34 46
IV.MNTT.EHZ. 2023-04-22T19:23:56.80 0.3 undecidable manual P 87 37.9287 50 0.46 65
7F.SIB3.EHZ. 2023-04-22T19:23:56.68 0.3 undecidable manual S 148 21.9669 112 -0.35 68
IV.MMO1.EHZ. 2023-04-22T19:23:56.98 0.6 undecidable manual S 135 22.6551 112 -0.3 46
IV.ATCC.EHZ. 2023-04-22T19:23:56.88 0.6 positive manual P 292 42.5241 50 -0.16 46
IV.GUMA.HHZ. 2023-04-22T19:23:56.00 0.6 undecidable manual S 83 16.9719 118 0.53 44
IV.ASSB.HHZ. 2023-04-22T19:23:56.05 0.1 positive manual P 270 38.0286 50 -0.3 89
7F.SIB1.EHZ. 2023-04-22T19:23:56.56 0.6 undecidable manual S 145 20.0688 114 0.11 48
7F.SIB2.EHZ. 2023-04-22T19:23:56.62 0.6 undecidable manual S 140 22.0668 112 -0.47 44
IV.MDAR.HNZ. 2023-04-22T19:23:55.23 0.1 undecidable manual S 4 16.6722 119 -0.15 96
IV.MML1.EHZ. 2023-04-22T19:23:55.15 0.6 undecidable manual S 302 14.874 121 0.3 46
IV.CING.HHZ. 2023-04-22T19:23:55.80 0.3 positive manual P 8 37.3293 50 -0.43 65
IV.SAP2.EHZ. 2023-04-22T19:23:54.02 0.3 undecidable manual P 75 22.755 112 0.31 69
IV.FEMA.HNZ. 2023-04-22T19:23:54.18 0.3 undecidable manual S 215 10.9779 129 0.44 68
IV.SNTG.HHZ. 2023-04-22T19:23:54.30 0.3 undecidable manual P 327 27.9498 108 -0.4 67
IV.EL6.EHZ. 2023-04-22T19:23:54.86 0.3 undecidable manual P 356 31.8459 50 -0.53 64
IV.MF5.EHZ. 2023-04-22T19:23:54.81 0.1 positive manual P 103 27.5502 108 0.19 93
IT.MTCL.HGZ. 2023-04-22T19:23:54.21 0.3 undecidable manual S 242 11.7771 128 0.26 71
7F.SIB1.EHZ. 2023-04-22T19:23:53.15 0.3 undecidable manual P 145 20.0688 114 -0.07 72
7F.SIB2.EHZ. 2023-04-22T19:23:53.29 0.3 undecidable manual P 140 22.0668 112 -0.3 69
IV.CSP1.EHZ. 2023-04-22T19:23:53.03 0.6 undecidable manual S 49 8.2806 138 -0.02 50
IV.CESI.HHZ. 2023-04-22T19:23:53.10 0.1 positive manual P 257 18.5703 116 0.15 95
7F.SIB3.EHZ. 2023-04-22T19:23:53.33 0.3 undecidable manual P 148 21.9669 112 -0.23 70
IV.PF6.EHZ. 2023-04-22T19:23:53.84 0.3 undecidable manual S 27 11.7771 127 -0.12 73
IV.NRCA.HHZ. 2023-04-22T19:23:53.61 0.1 undecidable manual P 183 23.2545 111 -0.2 94
IV.GAG1.HNZ. 2023-04-22T19:23:53.06 0.3 undecidable manual P 347 22.1556 112 -0.54 65
IV.MMO1.EHZ. 2023-04-22T19:23:53.63 1.0 negative manual P 135 22.6551 112 -0.06 24
IV.FDMO.HHZ. 2023-04-22T19:23:52.07 0.1 undecidable manual S 258 3.3966 160 -0.08 99
IV.GUMA.HHZ. 2023-04-22T19:23:52.90 0.6 undecidable manual P 83 16.9719 118 0.25 47
IV.MDAR.HNZ. 2023-04-22T19:23:52.50 0.3 undecidable manual P 4 16.6722 119 -0.1 72
IV.MML1.EHZ. 2023-04-22T19:23:52.42 0.1 negative manual P 302 14.874 121 0.13 96
IT.MTCL.HGZ. 2023-04-22T19:23:51.91 0.3 undecidable manual P 242 11.7771 128 0.13 73
IV.PF6.EHZ. 2023-04-22T19:23:51.72 0.3 undecidable manual P 27 11.7771 127 -0.07 73
IV.FEMA.HNZ. 2023-04-22T19:23:51.92 0.3 undecidable manual P 215 10.9779 129 0.27 71
IV.CSP1.EHZ. 2023-04-22T19:23:51.36 0.1 undecidable manual P 49 8.2806 138 0.1 98
IV.FDMO.HHZ. 2023-04-22T19:23:50.77 0.1 undecidable manual P 258 3.3966 160 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MML1.HNN. ML:1.8 0.000694 0.32 AML other m 2023-04-22T19:23:55.16
IV.MML1.EHN. ML:1.8 0.0006835 0.32 AML other m 2023-04-22T19:23:55.16
IV.MML1.EHE. ML:1.6 0.00042100000000000004 0.18 AML other m 2023-04-22T19:23:55.85
IV.MML1.HNE. ML:1.6 0.000439 0.84 AML other m 2023-04-22T19:23:56.34
IV.CESI.HHN. ML:1.5 0.000259 0.22 AML other m 2023-04-22T19:23:56.48
IV.CESI.HHE. ML:1.4 0.00021650000000000003 0.34 AML other m 2023-04-22T19:23:56.54
IV.MMO1.EHE. ML:1.3 0.000132 0.62 AML other m 2023-04-22T19:23:57.57
IV.MMO1.EHN. ML:1.4 0.0001655 0.84 AML other m 2023-04-22T19:23:58.44
IV.SNTG.HHE. ML:1.0 0.0000499 1.36 AML other m 2023-04-22T19:23:59.05
IV.NRCA.HHN. ML:1.8 0.000366 0.42 AML other m 2023-04-22T19:23:59.61
IV.NRCA.HHE. ML:1.9 0.0004935 0.08 AML other m 2023-04-22T19:23:59.61
IV.CING.HHN. ML:1.3 0.00006845 0.82 AML other m 2023-04-22T19:24:01.35
IV.ASSB.HHE. ML:1.6 0.000128 0.48 AML other m 2023-04-22T19:24:02.13
IV.CING.HHE. ML:1.3 0.0000742 0.68 AML other m 2023-04-22T19:24:02.85
IV.ASSB.HHN. ML:1.6 0.0001515 0.72 AML other m 2023-04-22T19:24:02.89
IV.SNTG.HHN. ML:1.0 0.00005415 0.82 AML other m 2023-04-22T19:24:03.29
IV.GAVE.EHE. ML:1.7 0.000155 0.38 AML other m 2023-04-22T19:24:03.28
IV.ATCC.EHE. ML:1.7 0.0001515 0.2 AML other m 2023-04-22T19:24:03.55
IV.ATCC.EHN. ML:1.5 0.0001046 1.12 AML other m 2023-04-22T19:24:04.15
IV.SMA1.EHE. ML:1.3 0.000047600000000000005 0.74 AML other m 2023-04-22T19:24:05.05
IV.MNTT.EHE. ML:1.6 0.0001585 0.86 AML other m 2023-04-22T19:24:05.84
IV.GAVE.EHN. ML:1.5 0.0000935 0.5 AML other m 2023-04-22T19:24:05.52
IV.LNSS.HHE. ML:1.5 0.00008074999999999998 0.12 AML other m 2023-04-22T19:24:05.60
IV.SMA1.EHN. ML:1.3 0.0000574 0.84 AML other m 2023-04-22T19:24:06.04
IV.MNTT.EHN. ML:1.9 0.0002735 0.26 AML other m 2023-04-22T19:24:06.60
IV.ARVD.HHE. ML:1.0 0.000024750000000000002 0.26 AML other m 2023-04-22T19:24:06.94
IV.LNSS.HHN. ML:1.4 0.0000756 0.16 AML other m 2023-04-22T19:24:07.38
IV.ARVD.HHN. ML:1.0 0.000025450000000000002 0.48 AML other m 2023-04-22T19:24:07.65
IV.MURB.HHE. ML:1.7 0.000124 0.9 AML other m 2023-04-22T19:24:07.96
IV.MURB.HHN. ML:1.6 0.00009779999999999999 0.22 AML other m 2023-04-22T19:24:08.48
IV.ARRO.EHE. ML:1.1 0.0000275 1.18 AML other m 2023-04-22T19:24:08.02
IV.RM33.EHN. ML:1.2 0.0000322 0.3 AML other m 2023-04-22T19:24:09.02
IV.RM33.EHE. ML:1.2 0.000036400000000000004 0.12 AML other m 2023-04-22T19:24:09.72
IV.FRON.EHE. ML:1.0 0.00001815 1.42 AML other m 2023-04-22T19:24:09.12
IV.ARRO.EHN. ML:1.2 0.000031599999999999996 0.18 AML other m 2023-04-22T19:24:10.07
IV.TERO.HHN. ML:1.4 0.000050299999999999996 0.1 AML other m 2023-04-22T19:24:10.39
IV.TERO.HHE. ML:1.2 0.000033799999999999995 0.68 AML other m 2023-04-22T19:24:10.73
IV.FRON.EHN. ML:1.1 0.00002425 0.68 AML other m 2023-04-22T19:24:11.73
IV.GIGS.HHE. ML:1.0 0.000016300000000000003 0.7 AML other m 2023-04-22T19:24:12.35
IV.GIGS.HHN. ML:1.0 0.00001615 0.68 AML other m 2023-04-22T19:24:12.36
IV.PIEI.HHN. ML:1.0 0.000014249999999999999 0.58 AML other m 2023-04-22T19:24:13.78
IV.PIEI.HHE. ML:1.1 0.000018950000000000003 0.86 AML other m 2023-04-22T19:24:14.30
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