Earthquake with magnitude of ML 0.9 on date 31-03-2023 and time 07:20:35 (UTC) in region 5 km SE Umbertide (PG)

A magnitude ML 0.9 earthquake occured in region: 5 km SE Umbertide (PG), on

  • 31-03-2023 07:20:35 (UTC)
  • 31-03-2023 09:20:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.2830, 12.3860 at 8 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.

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
Gubbio PG 18 32216 50577
Pietralunga PG 18 2111 52688
Corciano PG 19 21332 74020
Perugia PG 20 166134 240154

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km N of Perugia (166134 inhabitants)
45 Km NW of Foligno (57155 inhabitants)
46 Km E of Arezzo (99543 inhabitants)
81 Km SW of Fano (60888 inhabitants)
82 Km SW of Pesaro (94582 inhabitants)
83 Km N of Terni (111501 inhabitants)
85 Km E of Siena (53903 inhabitants)
88 Km S of Rimini (147750 inhabitants)
96 Km S of Cesena (96758 inhabitants)
99 Km W of Ancona (100861 inhabitants)
99 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 0.9 2023-03-31
07:20:35
43.2832 12.3862 8 2023-03-31
07:52:33
Sala Sismica INGV-Roma 115906371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-31 07:20:35 ± 0.08
Latitude 43.2832 ± 0.0045
Longitude 12.3862 ± 0.0049
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 115906371

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 398
Semi-minor axis of confidence ellipse (meter) 388
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 273
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) 126
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.03507
Epicentral distance of station farthest from the epicenter (degree) 0.31206
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 115906371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-31 07:52:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2023-03-31T07:20:47.66 0.3 undecidable manual S 140 34.6431 50 -0.21 69
IV.CAFI.HHZ. 2023-03-31T07:20:47.45 0.3 undecidable manual S 279 34.2435 50 -0.33 68
IV.BADI.EHZ. 2023-03-31T07:20:45.35 0.3 undecidable manual S 336 27.5502 107 -0.2 70
IV.ATBU.EHN. 2023-03-31T07:20:44.99 0.3 undecidable manual S 31 25.0527 108 0.29 69
IV.ATPC.HNN. 2023-03-31T07:20:44.17 0.3 undecidable manual S 15 22.6551 110 0.25 70
IV.CAFI.HHZ. 2023-03-31T07:20:42.83 0.3 undecidable manual P 279 34.2435 50 0.22 69
IV.ASSB.HHZ. 2023-03-31T07:20:42.33 0.3 undecidable manual P 140 34.6431 50 -0.34 68
IV.ATPI.EHZ. 2023-03-31T07:20:42.60 0.3 undecidable manual S 4 18.6702 114 -0.03 74
IV.BADI.EHZ. 2023-03-31T07:20:41.02 0.3 undecidable manual P 336 27.5502 107 -0.31 69
IV.ATSC.EHE. 2023-03-31T07:20:41.55 0.3 undecidable manual P 57 28.8489 106 -0.01 73
IV.ATBU.EHN. 2023-03-31T07:20:40.99 0.3 undecidable manual P 31 25.0527 108 0.15 71
IV.ATPC.HNN. 2023-03-31T07:20:40.53 0.1 undecidable manual P 15 22.6551 110 0.15 96
IV.MURB.HHZ. 2023-03-31T07:20:40.60 0.3 undecidable manual S 101 11.3775 126 0.16 73
IV.ATMC.EHN. 2023-03-31T07:20:40.15 0.3 undecidable manual P 319 23.9538 109 -0.48 67
IV.ATMI.HHZ. 2023-03-31T07:20:40.58 0.1 undecidable manual S 301 11.0778 127 0.22 96
IV.TSM3.DHZ.07 2023-03-31T07:20:40.50 0.1 undecidable manual S 347 11.3775 126 0.07 99
IV.TB01.DHZ.01 2023-03-31T07:20:40.42 0.3 undecidable manual S 20 11.5773 125 -0.09 74
IV.ATVA.EHE. 2023-03-31T07:20:39.44 0.3 undecidable manual S 266 8.1807 135 -0.15 74
IV.ATVO.HHZ. 2023-03-31T07:20:39.92 0.1 undecidable manual S 9 11.0778 127 -0.44 92
IV.TB02.DHZ.01 2023-03-31T07:20:39.63 0.3 undecidable manual S 11 9.879 130 -0.39 70
IV.ATPI.EHZ. 2023-03-31T07:20:39.75 0.3 undecidable manual P 4 18.6702 114 0.11 73
IV.TSM2.DHE.01 2023-03-31T07:20:39.08 0.1 undecidable manual P 34 15.0738 119 0.08 98
IV.ATMI.HHZ. 2023-03-31T07:20:38.94 0.1 undecidable manual P 301 11.0778 127 0.61 87
IV.TSM3.DHZ.07 2023-03-31T07:20:38.60 0.1 undecidable manual P 347 11.3775 126 0.23 96
IV.TB01.DHZ.01 2023-03-31T07:20:38.49 0.3 undecidable manual P 20 11.5773 125 0.08 74
IV.ATLO.HNZ. 2023-03-31T07:20:38.11 0.1 undecidable manual S 26 3.8961 155 -0.63 87
IV.ATVA.EHE. 2023-03-31T07:20:38.05 0.1 undecidable manual P 266 8.1807 135 0.17 98
IV.ATVO.HHZ. 2023-03-31T07:20:38.44 0.3 undecidable manual P 9 11.0778 127 0.11 74
IV.TB02.DHZ.01 2023-03-31T07:20:38.16 0.3 undecidable manual P 11 9.879 130 0.03 75
IV.MURB.HHZ. 2023-03-31T07:20:38.55 0.1 undecidable manual P 101 11.3775 126 0.17 97
IV.TB03.DHZ.01 2023-03-31T07:20:38.92 0.1 undecidable manual P 8 13.2756 122 0.24 96
IV.ATLO.HNZ. 2023-03-31T07:20:37.30 0.1 undecidable manual P 26 3.8961 155 -0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATVO.HHE. ML:0.8 0.00009054999999999999 0.54 AML other m 2023-03-31T07:20:40.39
IV.ATVO.HHN. ML:0.9 0.00009875 0.9 AML other m 2023-03-31T07:20:40.27
IV.ATMI.HHE. ML:1.0 0.00014350000000000002 0.44 AML other m 2023-03-31T07:20:42.76
IV.ATMI.HHN. ML:0.8 0.0000919 1.26 AML other m 2023-03-31T07:20:42.29
IV.ATPI.EHN. ML:0.8 0.00005115 0.38 AML other m 2023-03-31T07:20:43.10
IV.ATPI.EHE. ML:1.1 0.00010449999999999999 0.32 AML other m 2023-03-31T07:20:43.30
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