Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 11-03-2023 and time 17:39:00 (UTC) in region 4 km E Umbertide (PG)

A magnitude ML 0.8 earthquake occured in region: 4 km E Umbertide (PG), on

  • 11-03-2023 17:39:00 (UTC)
  • 11-03-2023 18:39:00 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.2970, 12.3810 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
Pietralunga PG 17 2111 20472
Gubbio PG 17 32216 52688
Corciano PG 20 21332 74020

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km N of Perugia (166134 inhabitants)
45 Km E of Arezzo (99543 inhabitants)
46 Km NW of Foligno (57155 inhabitants)
80 Km SW of Fano (60888 inhabitants)
81 Km SW of Pesaro (94582 inhabitants)
85 Km N of Terni (111501 inhabitants)
85 Km E of Siena (53903 inhabitants)
86 Km S of Rimini (147750 inhabitants)
94 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 0.8 2023-03-11
17:39:00		 43.2967 12.3812 8 2024-03-01
17:18:09		 Bollettino Sismico Italiano INGV 117682391
Reviewed
Rev100 		ML 0.8 2023-03-11
17:39:00		 43.2918 12.3867 6 2023-03-11
17:51:34		 Sala Sismica INGV-Roma 115260271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-11 17:39:00 ± 0.1
Latitude 43.2967 ± 0.0036
Longitude 12.3812 ± 0.0049
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 117682391

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 399
Semi-minor axis of confidence ellipse (meter) 250
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 149
Circular confidence region, given by single value of horizontal uncertainty (meter) 400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 115
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
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) 0.02698
Epicentral distance of station farthest from the epicenter (degree) 0.34534
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.4
Num. used stations 4
Type of magnitude ML
Reference to an origin 115260271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-11 17:51:34

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 117682391
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-05-24 14:32:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2023-03-11T17:39:11.10 0.6 undecidable manual S 25 29.2485 106 0.02 49
IV.ATBU.EHZ. 2023-03-11T17:39:09.67 0.6 undecidable manual S 34 24.0537 109 0.33 46
IV.NARO.HHZ. 2023-03-11T17:39:07.76 0.3 undecidable manual P 25 38.3283 50 -0.47 65
IV.ASSB.HHZ. 2023-03-11T17:39:07.44 0.6 negative manual P 141 36.0417 50 -0.43 44
IV.ATFO.HHZ. 2023-03-11T17:39:07.18 0.3 undecidable manual S 63 17.1717 116 0.03 74
IV.ATPI.EHZ. 2023-03-11T17:39:07.28 0.6 undecidable manual S 6 17.1717 116 0.14 48
IV.PIEI.HHZ. 2023-03-11T17:39:06.55 0.1 undecidable manual P 25 29.2485 106 -0.07 96
IV.TSM2.DHN. 2023-03-11T17:39:06.09 0.6 undecidable manual S 38 14.0748 120 -0.12 49
IV.ATMI.HHZ. 2023-03-11T17:39:05.19 0.6 undecidable manual S 295 9.9789 129 0.16 49
IV.TB03.DH1. 2023-03-11T17:39:05.47 0.6 undecidable manual S 11 11.877 125 -0.07 49
IV.ATBU.EHZ. 2023-03-11T17:39:05.74 0.3 undecidable manual P 34 24.0537 109 0.12 72
IV.MURB.HHZ. 2023-03-11T17:39:05.84 0.6 undecidable manual S 108 12.1767 124 0.21 48
IV.ATPI.EHZ. 2023-03-11T17:39:04.43 0.1 undecidable manual P 6 17.1717 116 0.08 98
IV.ATVA.EHE. 2023-03-11T17:39:04.16 0.6 undecidable manual S 256 7.9809 136 -0.35 47
IV.TB01.DHZ. 2023-03-11T17:39:04.95 0.6 undecidable manual S 25 10.3785 128 -0.19 48
IV.ATVO.HHZ. 2023-03-11T17:39:04.77 0.6 undecidable manual S 12 9.6792 130 -0.18 49
IV.ATFO.HHZ. 2023-03-11T17:39:04.74 0.6 undecidable manual P 63 17.1717 116 0.38 46
IV.TB02.DHZ. 2023-03-11T17:39:04.43 0.6 undecidable manual S 16 8.4804 134 -0.21 48
IV.TSM2.DHN. 2023-03-11T17:39:03.92 0.1 undecidable manual P 38 14.0748 120 0.12 98
IV.ATVO.HHZ. 2023-03-11T17:39:03.14 0.1 undecidable manual P 12 9.6792 130 0.06 100
IV.ATMI.HHZ. 2023-03-11T17:39:03.44 0.6 undecidable manual P 295 9.9789 129 0.31 47
IV.TB03.DH1. 2023-03-11T17:39:03.48 0.1 undecidable manual P 11 11.877 125 0.06 99
IV.MURB.HHZ. 2023-03-11T17:39:03.63 0.1 positive manual P 108 12.1767 124 0.15 97
IV.ATVA.EHE. 2023-03-11T17:39:03.09 0.3 undecidable manual P 256 7.9809 136 0.26 72
IV.TB01.DHZ. 2023-03-11T17:39:03.25 0.1 undecidable manual P 25 10.3785 128 0.06 99
IV.ATLO.EHE. 2023-03-11T17:39:02.08 0.1 undecidable manual P 46 2.997 160 -0.21 98
IV.TB02.DHZ. 2023-03-11T17:39:02.95 0.1 undecidable manual P 16 8.4804 134 0.05 100
IT.UMBT.HGZ. 2023-03-11T17:39:02.40 0.3 undecidable manual P 285 3.0969 159 0.1 75
IV.ATLO.EHE. 2023-03-11T17:39:02.77 0.6 undecidable manual S 46 2.997 160 -0.8 41
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATVO.HHN. ML:0.4 0.000037352 0.1792 AML other m 2023-03-11T17:39:04.98
IV.ATVO.HHE. ML:0.6 0.000056987109999999996 0.2176 AML other m 2023-03-11T17:39:06.09
IV.MURB.HHN. ML:1.2 0.0002065 1.8 AML other m 2023-03-11T17:39:06.99
IV.MURB.HHE. ML:1.2 0.0001853757 0.2048 AML other m 2023-03-11T17:39:07.92
IV.ATFO.HHE. ML:0.8 0.000048014895 0.256 AML other m 2023-03-11T17:39:08.63
IV.ATFO.HHN. ML:0.8 0.00005629463 0.1792 AML other m 2023-03-11T17:39:07.93
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