Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 23-03-2023 and time 10:21:07 (Italy) in region 5 km E Umbertide (PG)

A magnitude ML 1.3 earthquake occured in region: 5 km E Umbertide (PG), on

  • 23-03-2023 09:21:07 (UTC)
  • 23-03-2023 10:21:07 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.2910, 12.3830 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 9 1680 18361
Gubbio PG 17 32216 50577
Pietralunga PG 18 2111 52688
Corciano PG 20 21332 74020
Lisciano Niccone PG 20 613 74633

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km N of Perugia (166134 inhabitants)
45 Km E of Arezzo (99543 inhabitants)
45 Km NW of Foligno (57155 inhabitants)
80 Km SW of Fano (60888 inhabitants)
81 Km SW of Pesaro (94582 inhabitants)
84 Km N of Terni (111501 inhabitants)
85 Km E of Siena (53903 inhabitants)
87 Km S of Rimini (147750 inhabitants)
95 Km S of Cesena (96758 inhabitants)
99 Km W of Ancona (100861 inhabitants)
100 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 1.3 2023-03-23
09:21:07		 43.2913 12.383 8 2024-03-01
17:18:19		 Bollettino Sismico Italiano INGV 124203541
Reviewed
Rev100 		ML 1.4 2023-03-23
09:21:07		 43.2912 12.3878 10 2023-03-23
09:45:30		 Sala Sismica INGV-Roma 115662311
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-23 09:21:07 ± 0.06
Latitude 43.2913 ± 0.0036
Longitude 12.3830 ± 0.0037
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 124203541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 361
Semi-minor axis of confidence ellipse (meter) 324
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 353
Circular confidence region, given by single value of horizontal uncertainty (meter) 360.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.57287
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 124203541
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-12-22 12:21:21

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 115662311
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-23 09:45:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SELL.HHZ. 2023-03-23T09:22:26.68 3.0 undecidable manual Pn -0.41 0
GU.CIRO.HHZ. 2023-03-23T09:22:23.43 3.0 undecidable manual Pg 12.72 0
IV.VAGA.HHZ. 2023-03-23T09:21:52.53 3.0 undecidable manual P 6.09 0
IV.TRI.HHZ. 2023-03-23T09:21:49.85 3.0 undecidable manual Pn 0
IV.LPEL.HHZ. 2023-03-23T09:21:39.27 3.0 negative manual Pn 0.93 0
IV.CARD.HHZ. 2023-03-23T09:21:37.22 3.0 undecidable manual Pn 0
IV.CIMA.HNZ. 2023-03-23T09:21:24.46 3.0 negative manual P -1.16 0
IV.ASSB.HHZ. 2023-03-23T09:21:19.82 0.6 undecidable manual S 141 35.4423 50 -0.19 47
IV.CAFI.HHZ. 2023-03-23T09:21:19.27 0.6 undecidable manual S 277 33.9438 104 -0.26 46
IV.EL6.EHZ. 2023-03-23T09:21:18.00 0.3 undecidable manual P 86 58.1973 50 -0.19 67
IV.PIEI.HHZ. 2023-03-23T09:21:18.08 0.6 undecidable manual S 24 29.748 105 -0.05 49
IV.FDMO.HHZ. 2023-03-23T09:21:18.65 0.3 undecidable manual P 116 63.5919 50 -0.38 64
IV.ATCC.EHZ. 2023-03-23T09:21:16.52 0.6 undecidable manual S 119 23.8539 109 0.33 46
IV.MGAB.HHZ. 2023-03-23T09:21:16.64 0.3 undecidable manual P 208 47.4192 50 0.12 70
IV.PARC.HHZ. 2023-03-23T09:21:15.97 0.3 undecidable manual P 344 41.3253 50 0.38 67
IV.ATPI.EHZ. 2023-03-23T09:21:14.19 0.6 undecidable manual S 5 17.7711 115 -0.01 50
IV.ATFO.HHZ. 2023-03-23T09:21:14.27 0.6 undecidable manual S 61 17.3715 115 0.19 48
IV.ASSB.HHZ. 2023-03-23T09:21:14.22 0.3 undecidable manual P 141 35.4423 50 -0.47 66
IV.CAFI.HHZ. 2023-03-23T09:21:14.39 0.1 undecidable manual P 277 33.9438 104 -0.02 97
IV.PIEI.HHZ. 2023-03-23T09:21:13.56 0.3 undecidable manual P 24 29.748 105 -0.05 73
IV.ATCC.EHZ. 2023-03-23T09:21:12.54 0.1 positive manual P 119 23.8539 109 0.05 98
IV.ATMI.HHZ. 2023-03-23T09:21:12.17 0.3 undecidable manual S 297 10.3785 128 0.15 74
IV.MURB.HHZ. 2023-03-23T09:21:12.81 0.6 undecidable manual S 105 11.877 125 0.38 47
IV.ATVA.EHZ. 2023-03-23T09:21:11.16 0.6 undecidable manual S 260 7.9809 136 -0.24 49
IV.ATVO.HHZ. 2023-03-23T09:21:11.63 0.6 undecidable manual S 11 10.2786 129 -0.35 47
IV.ATPI.EHZ. 2023-03-23T09:21:11.38 0.3 undecidable manual P 5 17.7711 115 0.04 75
IV.TB02.DHZ.01 2023-03-23T09:21:11.53 0.6 undecidable manual S 14 8.9799 132 -0.12 50
IV.ATFO.HHZ. 2023-03-23T09:21:11.43 0.3 undecidable manual P 61 17.3715 115 0.16 73
IV.ATMI.HHZ. 2023-03-23T09:21:10.38 0.3 undecidable manual P 297 10.3785 128 0.3 72
IT.UMBT.HGZ. 2023-03-23T09:21:10.43 0.6 undecidable manual S 294 3.4965 157 -0.08 51
IV.MURB.HHZ. 2023-03-23T09:21:10.53 0.1 positive manual P 105 11.877 125 0.22 97
IV.ATVO.HHZ. 2023-03-23T09:21:10.20 0.1 undecidable manual P 11 10.2786 129 0.14 99
IV.ATLO.EHZ. 2023-03-23T09:21:09.03 0.1 undecidable manual P 37 3.2967 158 -0.16 100
IT.UMBT.HGZ. 2023-03-23T09:21:09.38 0.3 undecidable manual P 294 3.4965 157 0.17 74
IV.ATVA.EHZ. 2023-03-23T09:21:09.87 0.1 undecidable manual P 260 7.9809 136 0.15 99
IV.ATLO.EHZ. 2023-03-23T09:21:09.70 0.3 undecidable manual S 37 3.2967 158 -0.79 62
IV.TB02.DHZ.01 2023-03-23T09:21:09.96 0.1 undecidable manual P 14 8.9799 132 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MURB.HNE. ML:1.9 0.001015 1.64 AML other m 2023-03-23T09:21:12.15
IV.MURB.HHE. ML:2.0 0.001159 0.68 AML other m 2023-03-23T09:21:12.97
IV.ATMI.HHE. ML:1.5 0.0004825 1.58 AML other m 2023-03-23T09:21:13.06
IV.ATMI.HHN. ML:1.4 0.000328 0.32 AML other m 2023-03-23T09:21:13.26
IV.ATVO.HHE. ML:1.2 0.0001965 0.18 AML other m 2023-03-23T09:21:13.11
IV.ATVO.HHN. ML:1.0 0.00013550000000000001 1 AML other m 2023-03-23T09:21:13.16
IV.MURB.HNN. ML:1.9 0.0009135 0.2 AML other m 2023-03-23T09:21:13.97
IV.MURB.HHN. ML:1.9 0.001089 1.48 AML other m 2023-03-23T09:21:14.96
IV.ATFO.HHE. ML:1.5 0.0002735 0.68 AML other m 2023-03-23T09:21:14.77
IV.ATFO.HHN. ML:1.4 0.000206 0.6 AML other m 2023-03-23T09:21:14.45
IV.ATPI.EHN. ML:1.1 0.00010889999999999999 1.54 AML other m 2023-03-23T09:21:15.88
IV.ATPI.EHE. ML:1.1 0.00010065 0.74 AML other m 2023-03-23T09:21:16.53
IV.ATCC.EHE. ML:1.6 0.0002265 1.74 AML other m 2023-03-23T09:21:16.01
IV.ATCC.EHN. ML:1.3 0.00014049999999999997 0.18 AML other m 2023-03-23T09:21:17.10
IV.PIEI.HHE. ML:1.2 0.00008455 0.32 AML other m 2023-03-23T09:21:18.72
IV.CAFI.HHE. ML:0.9 0.000034200000000000005 0.82 AML other m 2023-03-23T09:21:19.64
IV.PIEI.HHN. ML:1.2 0.0000688 1.5 AML other m 2023-03-23T09:21:19.09
IV.ASSB.HHE. ML:1.2 0.0000696 0.76 AML other m 2023-03-23T09:21:20.17
IV.ASSB.HHN. ML:1.4 0.0000922 0.98 AML other m 2023-03-23T09:21:21.44
IV.CAFI.HHN. ML:0.8 0.0000295 0.94 AML other m 2023-03-23T09:21:22.20
IV.MGAB.HHE. ML:1.4 0.00006775000000000001 0.26 AML other m 2023-03-23T09:21:25.62
IV.MGAB.HHN. ML:1.4 0.00006429999999999999 0.72 AML other m 2023-03-23T09:21:25.18
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