Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 18-04-2023 and time 12:56:33 (Italy) in region 5 km SE Umbertide (PG)

A magnitude ML 1.4 earthquake occured in region: 5 km SE Umbertide (PG), on

  • 18-04-2023 10:56:33 (UTC)
  • 18-04-2023 12:56:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.2800, 12.3750 at 8 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
Umbertide PG 5 16681 16681
Montone PG 10 1680 18361
Corciano PG 18 21332 39693
Gubbio PG 19 32216 71909
Pietralunga PG 19 2111 74020
Lisciano Niccone PG 19 613 74633
Perugia PG 19 166134 240767

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km N of Perugia (166134 inhabitants)
45 Km NW of Foligno (57155 inhabitants)
45 Km E of Arezzo (99543 inhabitants)
82 Km SW of Fano (60888 inhabitants)
83 Km SW of Pesaro (94582 inhabitants)
83 Km N of Terni (111501 inhabitants)
84 Km E of Siena (53903 inhabitants)
88 Km S of Rimini (147750 inhabitants)
96 Km S of Cesena (96758 inhabitants)
98 Km N of Viterbo (67173 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 2023-04-18
10:56:33		 43.2795 12.3748 8 2024-03-01
17:18:20		 Bollettino Sismico Italiano INGV 125054521
Reviewed
Rev100 		ML 1.3 2023-04-18
10:56:33		 43.2757 12.3722 8 2023-04-18
11:13:44		 Sala Sismica INGV-Roma 116487221
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-18 10:56:33 ± 0.03
Latitude 43.2795 ± 0.0018
Longitude 12.3748 ± 0.0025
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 125054521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 216
Semi-minor axis of confidence ellipse (meter) 196
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 352
Circular confidence region, given by single value of horizontal uncertainty (meter) 220.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 51
Number of associated phases, regardless of their use for origin computation 64
Number of defining phases 64
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.03327
Epicentral distance of station farthest from the epicenter (degree) 0.69967
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:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 125054521
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2024-02-07 10:53:59

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 28
Type of magnitude ML
Reference to an origin 116487221
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-18 11:13:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MGAB.HHZ. 2023-04-18T10:56:48.61 0.6 undecidable manual S 208 45.9207 50 0.19 45
IV.SNTG.HHZ. 2023-04-18T10:56:48.52 0.6 undecidable manual S 93 45.8208 50 0.14 46
IV.NARO.HHZ. 2023-04-18T10:56:46.75 0.6 undecidable manual S 24 40.3263 50 -0.17 46
IV.NRCA.HHZ. 2023-04-18T10:56:46.59 1.0 undecidable manual P 129 77.6667 50 -0.25 21
IV.ASSB.HHZ. 2023-04-18T10:56:45.22 0.6 undecidable manual S 139 34.9428 50 -0.25 45
IV.FDMO.HHZ. 2023-04-18T10:56:44.41 0.3 undecidable manual P 115 63.6918 50 -0.26 65
IV.PIEI.HHZ. 2023-04-18T10:56:44.35 0.6 undecidable manual S 24 31.2465 105 0.05 48
IV.EL6.EHZ. 2023-04-18T10:56:44.01 0.6 undecidable manual P 84 58.8966 50 0.07 45
IV.SACS.HHZ. 2023-04-18T10:56:44.48 0.1 undecidable manual P 218 60.7947 50 0.24 87
IV.CAFI.HHZ. 2023-04-18T10:56:44.80 0.6 undecidable manual S 280 33.4443 104 -0.25 46
IV.FOSV.EHZ. 2023-04-18T10:56:44.37 0.6 undecidable manual S 87 31.2465 105 0.06 48
IV.ATSC.EHZ. 2023-04-18T10:56:43.90 0.6 undecidable manual S 57 29.8479 106 0.06 48
IV.BADI.EHZ. 2023-04-18T10:56:43.10 0.6 undecidable manual S 338 27.6501 107 0 48
IV.MOMA.HNZ. 2023-04-18T10:56:43.76 0.6 undecidable manual P 163 55.1004 50 0.41 42
IV.CRE.HHE. 2023-04-18T10:56:43.20 0.6 undecidable manual P 318 50.8158 50 0.51 42
IV.CESI.HHZ. 2023-04-18T10:56:42.75 0.3 undecidable manual P 125 52.6029 50 -0.22 66
IV.ATCC.EHZ. 2023-04-18T10:56:42.11 0.6 undecidable manual S 116 23.8539 109 0.25 46
IV.MPAG.EHZ. 2023-04-18T10:56:42.34 1.0 undecidable manual P 38 49.617 50 -0.17 22
IV.ATBU.HNZ. 2023-04-18T10:56:42.82 0.6 undecidable manual S 33 25.8519 108 0.29 46
IV.ATMC.EHZ. 2023-04-18T10:56:41.72 0.6 undecidable manual S 322 23.6541 109 -0.08 48
IV.MGAB.HHZ. 2023-04-18T10:56:41.98 0.1 undecidable manual P 208 45.9207 50 0.04 93
IV.SNTG.HHZ. 2023-04-18T10:56:41.71 0.3 undecidable manual P 93 45.8208 50 -0.21 67
IV.PARC.HHZ. 2023-04-18T10:56:41.47 0.3 undecidable manual P 345 42.4242 50 0.07 70
IV.ATFO.HHZ. 2023-04-18T10:56:40.26 0.6 undecidable manual S 59 18.5703 114 0.1 48
IV.ATPI.EHZ. 2023-04-18T10:56:40.40 0.6 undecidable manual S 7 19.1697 114 0.06 49
IV.TSM1.DHZ.01 2023-04-18T10:56:40.39 0.6 undecidable manual S 68 19.3695 113 -0.03 49
IV.SSFR.HHN. 2023-04-18T10:56:40.41 0.3 undecidable manual P 62 37.1295 50 -0.18 69
IV.NARO.HHZ. 2023-04-18T10:56:40.74 0.3 undecidable manual P 24 40.3263 50 -0.34 66
IV.CAFI.HHZ. 2023-04-18T10:56:39.98 0.1 undecidable manual P 280 33.4443 104 -0.02 96
IV.ATSC.EHZ. 2023-04-18T10:56:39.13 0.1 undecidable manual P 57 29.8479 106 -0.17 93
IV.TSM5.DHZ. 2023-04-18T10:56:39.02 0.1 undecidable manual P 39 28.8489 106 -0.09 95
IV.FOSV.EHZ. 2023-04-18T10:56:39.55 0.3 undecidable manual P 87 31.2465 105 -0.02 72
IV.PIEI.HHZ. 2023-04-18T10:56:39.41 0.3 undecidable manual P 24 31.2465 105 -0.16 70
IV.ASSB.HHZ. 2023-04-18T10:56:39.84 0.1 undecidable manual P 139 34.9428 50 -0.4 88
IV.ATBU.HNZ. 2023-04-18T10:56:38.62 0.1 undecidable manual P 33 25.8519 108 0.08 96
IV.BADI.EHZ. 2023-04-18T10:56:38.92 0.3 undecidable manual P 338 27.6501 107 0.05 72
IV.ATPC.HHZ. 2023-04-18T10:56:38.12 0.1 undecidable manual P 17 23.2545 110 0.07 96
IV.TB03.DHZ.25 2023-04-18T10:56:38.71 0.6 undecidable manual S 12 13.7751 121 0.01 49
IV.ATVO.HHZ. 2023-04-18T10:56:38.14 0.6 undecidable manual S 13 11.6772 126 0.07 49
IV.ATMC.EHZ. 2023-04-18T10:56:38.31 0.3 undecidable manual P 322 23.6541 109 0.19 70
IV.ATCC.EHZ. 2023-04-18T10:56:38.20 0.1 undecidable manual P 116 23.8539 109 0.04 97
IV.TSM2.DHZ.01 2023-04-18T10:56:38.78 0.6 undecidable manual S 36 15.9729 118 -0.56 44
IV.MURB.HHZ. 2023-04-18T10:56:38.56 0.6 undecidable manual S 99 12.2766 124 0.33 46
IV.TB01.DHZ. 2023-04-18T10:56:37.73 0.6 undecidable manual S 23 12.3765 124 -0.53 44
IV.ATFO.HHZ. 2023-04-18T10:56:37.52 0.3 undecidable manual P 59 18.5703 114 0.34 69
IV.ATPI.EHZ. 2023-04-18T10:56:37.37 0.1 undecidable manual P 7 19.1697 114 0.1 96
IV.TSM1.DHZ.01 2023-04-18T10:56:37.40 0.1 undecidable manual P 68 19.3695 113 0.07 97
IV.ATMI.HHZ. 2023-04-18T10:56:37.85 0.6 undecidable manual S 305 10.5783 128 0.09 49
IV.TB02.DHZ.01 2023-04-18T10:56:37.80 0.6 undecidable manual S 15 10.4784 129 0.06 49
IV.TSM2.DHZ.01 2023-04-18T10:56:36.81 0.1 undecidable manual P 36 15.9729 118 0.11 97
IV.ATMI.HHZ. 2023-04-18T10:56:36.06 0.1 undecidable manual P 305 10.5783 128 0.27 94
IT.UMBT.HGZ. 2023-04-18T10:56:36.10 0.6 undecidable manual S 317 3.6963 156 -0.16 49
IV.MURB.HHZ. 2023-04-18T10:56:36.21 0.1 undecidable manual P 99 12.2766 124 0.15 96
IV.TB03.DHZ.25 2023-04-18T10:56:36.43 0.1 undecidable manual P 12 13.7751 121 0.1 97
IV.TB01.DHZ. 2023-04-18T10:56:36.24 0.1 undecidable manual P 23 12.3765 124 0.16 96
IV.TSM4.DHZ.09 2023-04-18T10:56:36.40 0.6 undecidable manual S 300 6.4935 142 -0.37 46
IV.ATVO.HHZ. 2023-04-18T10:56:36.07 0.1 undecidable manual P 13 11.6772 126 0.1 98
IV.ATVA.EHZ. 2023-04-18T10:56:36.42 0.6 undecidable manual S 269 7.1928 139 -0.5 45
IV.ATVA.EHZ. 2023-04-18T10:56:35.20 0.6 undecidable manual P 269 7.1928 139 -0.11 49
IV.TB02.DHZ.01 2023-04-18T10:56:35.91 0.1 undecidable manual P 15 10.4784 129 0.14 97
IV.ATLO.EHZ. 2023-04-18T10:56:35.81 0.6 undecidable manual S 33 4.7952 150 -0.62 43
IV.TSM4.DHZ.09 2023-04-18T10:56:35.24 0.1 undecidable manual P 300 6.4935 142 0.02 100
IV.ATLO.EHZ. 2023-04-18T10:56:34.92 0.1 undecidable manual P 33 4.7952 150 -0.09 99
IT.UMBT.HGZ. 2023-04-18T10:56:34.97 0.1 undecidable manual P 317 3.6963 156 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATVO.HHE. ML:1.6 0.0005625 0.32 AML other m 2023-04-18T10:56:38.79
IV.MURB.HNN. ML:2.3 0.00252 1.64 AML other m 2023-04-18T10:56:38.00
IV.MURB.HHE. ML:2.3 0.00246 1.4 AML other m 2023-04-18T10:56:38.28
IV.MURB.HNE. ML:2.3 0.0024649999999999997 1.4 AML other m 2023-04-18T10:56:38.28
IV.ATVO.HHN. ML:1.4 0.0003395 1.52 AML other m 2023-04-18T10:56:39.77
IV.MURB.HHN. ML:2.4 0.0029950000000000003 1.78 AML other m 2023-04-18T10:56:39.99
IV.ATMI.HHE. ML:1.9 0.0010095 0.24 AML other m 2023-04-18T10:56:39.29
IV.ATMI.HHN. ML:1.7 0.0006995 0.28 AML other m 2023-04-18T10:56:39.43
IV.ATPI.EHN. ML:1.3 0.0001635 0.38 AML other m 2023-04-18T10:56:40.74
IV.ATFO.HHN. ML:1.6 0.0003525 0.58 AML other m 2023-04-18T10:56:40.90
IV.ATFO.HHE. ML:1.6 0.000309 0.5 AML other m 2023-04-18T10:56:41.37
IV.ATPI.EHE. ML:1.4 0.0001905 1.34 AML other m 2023-04-18T10:56:42.14
IV.ATCC.EHE. ML:1.5 0.000207 1.68 AML other m 2023-04-18T10:56:43.85
IV.ATCC.EHN. ML:1.4 0.00017050000000000002 1.56 AML other m 2023-04-18T10:56:43.78
IV.CAFI.HHN. ML:1.2 0.00006745 1.52 AML other m 2023-04-18T10:56:45.93
IV.PIEI.HHE. ML:1.2 0.0000686 1.26 AML other m 2023-04-18T10:56:45.08
IV.ASSB.HHE. ML:1.1 0.000054 0.16 AML other m 2023-04-18T10:56:46.22
IV.ASSB.HHN. ML:1.2 0.00007245 0.48 AML other m 2023-04-18T10:56:46.68
IV.CAFI.HHE. ML:1.2 0.00006620000000000001 0.36 AML other m 2023-04-18T10:56:46.54
IV.PIEI.HHN. ML:1.1 0.0000533 0.38 AML other m 2023-04-18T10:56:47.68
IV.SNTG.HHN. ML:1.4 0.00007230000000000001 0.96 AML other m 2023-04-18T10:56:48.69
IV.SNTG.HHE. ML:1.2 0.00004515 0.88 AML other m 2023-04-18T10:56:49.04
IV.BADI.EHE. ML:1.2 0.00008165 0.28 AML other m 2023-04-18T10:56:49.29
IV.BADI.EHN. ML:1.1 0.00007324999999999999 0.94 AML other m 2023-04-18T10:56:49.51
IV.MGAB.HHE. ML:1.6 0.00011949999999999999 1.36 AML other m 2023-04-18T10:56:50.30
IV.MGAB.HHN. ML:1.6 0.0001305 1.28 AML other m 2023-04-18T10:56:51.74
IV.PARC.HHN. ML:1.0 0.00003655 0.38 AML other m 2023-04-18T10:56:51.14
IV.PARC.HHE. ML:1.1 0.00004245 0.84 AML other m 2023-04-18T10:56:52.55
IV.FDMO.HHE. ML:1.0 0.00001915 0.48 AML other m 2023-04-18T10:56:55.40
IV.SACS.HHN. ML:1.2 0.0000366 0.34 AML other m 2023-04-18T10:56:55.57
IV.NRCA.HHE. ML:1.2 0.000025 1.4 AML other m 2023-04-18T10:56:59.24
IV.SACS.HHE. ML:1.1 0.000027500000000000004 0.68 AML other m 2023-04-18T10:57:00.20
IV.NRCA.HHN. ML:1.2 0.0000242 0.82 AML other m 2023-04-18T10:57:01.41
IV.FDMO.HHN. ML:1.0 0.000018849999999999997 1.54 AML other m 2023-04-18T10:57:02.79
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