Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 12-03-2023 and time 00:02:57 (UTC) in region 5 km E Umbertide (PG)

A magnitude ML 1.1 earthquake occured in region: 5 km E Umbertide (PG), on

  • 12-03-2023 00:02:57 (UTC)
  • 12-03-2023 01:02:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.2950, 12.3850 at 4 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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)
84 Km N of Terni (111501 inhabitants)
85 Km E of Siena (53903 inhabitants)
87 Km S of Rimini (147750 inhabitants)
94 Km S of Cesena (96758 inhabitants)
98 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
Reviewed
Rev100 		ML 1.1 2023-03-12
00:02:57		 43.295 12.3848 4 2023-03-12
00:22:17		 Sala Sismica INGV-Roma 115268441
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-12 00:02:57 ± 0.09
Latitude 43.2950 ± 0.0027
Longitude 12.3848 ± 0.0049
Depth (km) 4 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 115268441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 390
Semi-minor axis of confidence ellipse (meter) 198
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 238
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 175
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.02608
Epicentral distance of station farthest from the epicenter (degree) 0.21584
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.0
Num. used stations 2
Type of magnitude ML
Reference to an origin 115268441
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-12 00:22:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATCC.EHZ. 2023-03-12T00:03:05.81 0.6 undecidable manual S 120 23.9538 100 0.09 48
IV.ATFO.HHZ. 2023-03-12T00:03:03.43 0.6 undecidable manual S 62 17.0718 104 0.05 49
IV.ATPI.EHZ. 2023-03-12T00:03:03.41 0.6 undecidable manual S 5 17.3715 104 -0.07 48
IV.MURB.HHZ. 2023-03-12T00:03:02.02 0.6 undecidable manual S 107 11.877 110 0.36 46
IV.TB01.DHZ.01 2023-03-12T00:03:01.28 0.6 undecidable manual S 23 10.4784 113 0.07 49
IV.ATVO.HHZ. 2023-03-12T00:03:01.18 0.6 undecidable manual S 10 9.7791 114 0.17 48
IV.ATCC.EHZ. 2023-03-12T00:03:01.82 0.6 positive manual P 120 23.9538 100 -0.33 45
IV.TB03.DHZ.25 2023-03-12T00:03:01.81 0.6 undecidable manual S 10 11.9769 110 0.11 48
IV.ATPI.EHZ. 2023-03-12T00:03:00.75 0.6 undecidable manual P 5 17.3715 104 -0.11 48
IV.TB02.DHZ.01 2023-03-12T00:03:00.80 0.6 undecidable manual S 13 8.5803 117 0.17 48
IV.ATFO.HHZ. 2023-03-12T00:03:00.75 3.0 undecidable manual P 62 17.0718 104 -0.05 0
IV.TB03.DHZ.25 2023-03-12T00:02:59.68 0.1 undecidable manual P 10 11.9769 110 -0.15 96
IV.ATMI.HHZ. 2023-03-12T00:02:59.72 0.1 undecidable manual P 295 10.3785 113 0.19 96
IV.TB01.DHZ.01 2023-03-12T00:02:59.48 0.1 undecidable manual P 23 10.4784 113 -0.06 98
IV.ATVO.HHZ. 2023-03-12T00:02:59.41 0.3 negative manual P 10 9.7791 114 -0.02 74
IV.TB02.DHZ.01 2023-03-12T00:02:59.18 0.1 undecidable manual P 13 8.5803 117 -0.03 99
IV.MURB.HHZ. 2023-03-12T00:02:59.79 0.1 positive manual P 107 11.877 110 -0.01 99
IV.ATLO.HNZ. 2023-03-12T00:02:58.30 0.1 undecidable manual P 39 2.8971 147 -0.03 100
IV.ATLO.HNZ. 2023-03-12T00:02:58.96 0.1 undecidable manual S 39 2.8971 147 -0.14 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MURB.HHE. ML:1.1 0.000184 0.34 AML other m 2023-03-12T00:03:02.53
IV.MURB.HHN. ML:1.1 0.00017749999999999998 0.32 AML other m 2023-03-12T00:03:03.25
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