Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 30-08-2023 and time 21:44:07 (UTC) in region 8 km NW Gubbio (PG)

A magnitude ML 0.9 earthquake occured in region: 8 km NW Gubbio (PG), on

  • 30-08-2023 21:44:07 (UTC)
  • 30-08-2023 23:44:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.3960, 12.5070 at 9 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
Gubbio PG 8 32216 32216
Pietralunga PG 8 2111 34327
Scheggia e Pascelupo PG 13 1393 35720
Cantiano PU 13 2245 37965
Montone PG 15 1680 39645
Costacciaro PG 17 1216 40861
Umbertide PG 18 16681 57542
Apecchio PU 19 1882 59424

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km N of Perugia (166134 inhabitants)
51 Km E of Arezzo (99543 inhabitants)
51 Km NW of Foligno (57155 inhabitants)
65 Km SW of Fano (60888 inhabitants)
66 Km SW of Pesaro (94582 inhabitants)
74 Km S of Rimini (147750 inhabitants)
85 Km S of Cesena (96758 inhabitants)
85 Km W of Ancona (100861 inhabitants)
94 Km N of Terni (111501 inhabitants)
95 Km E of Siena (53903 inhabitants)
99 Km SE of Forlì (117913 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 2023-08-30
21:44:07		 43.3963 12.5068 9 2023-08-30
22:14:59		 Sala Sismica INGV-Roma 120622901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-08-30 21:44:07 ± 0.05
Latitude 43.3963 ± 0.0018
Longitude 12.5068 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 120622901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 300
Semi-minor axis of confidence ellipse (meter) 33
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 281
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 76
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.55488
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 13
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 19
Type of magnitude ML
Reference to an origin 120622901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-08-30 22:14:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2023-08-30T21:44:27.09 0.6 undecidable manual S 130 61.5939 50 0.58 40
IV.CAFI.HHZ. 2023-08-30T21:44:21.95 0.3 undecidable manual S 260 44.2224 50 0.08 70
IV.MPAG.EHZ. 2023-08-30T21:44:18.71 0.3 undecidable manual S 38 32.8449 50 -0.12 71
IV.FDMO.HHZ. 2023-08-30T21:44:18.16 0.1 undecidable manual P 130 61.5939 50 -0.18 89
IV.FOSV.EHZ. 2023-08-30T21:44:16.04 0.3 undecidable manual S 119 23.3544 111 0.17 71
IV.NARO.HHZ. 2023-08-30T21:44:16.09 0.3 undecidable manual S 14 24.5532 110 -0.14 72
IV.CAFI.HHZ. 2023-08-30T21:44:15.68 1.0 undecidable manual P 260 44.2224 50 0.02 24
IV.FRON.EHZ. 2023-08-30T21:44:15.44 0.3 undecidable manual S 53 22.1556 112 -0.04 73
IV.ASSB.HHZ. 2023-08-30T21:44:14.73 3.0 undecidable manual P -0.16 0
IV.ARVD.HHZ. 2023-08-30T21:44:14.23 3.0 positive manual P -0.03 0
IV.MURB.HHZ. 2023-08-30T21:44:13.16 0.3 undecidable manual S 174 14.874 121 -0.05 74
IV.PIEI.HHZ. 2023-08-30T21:44:13.81 0.3 undecidable manual S 8 15.5733 120 0.38 69
IV.MPAG.EHZ. 2023-08-30T21:44:13.73 1.0 negative manual P 38 32.8449 50 -0.18 23
IV.BADI.EHZ. 2023-08-30T21:44:12.58 3.0 undecidable manual P 0.12 0
IV.NARO.HHZ. 2023-08-30T21:44:12.24 0.1 undecidable manual P 14 24.5532 110 -0.16 95
IV.ATCC.EHZ. 2023-08-30T21:44:12.56 1.0 positive manual P 0.24 0.5
IV.FOSV.EHZ. 2023-08-30T21:44:12.18 0.1 undecidable manual P 119 23.3544 111 -0.01 98
IV.ATMI.HHZ. 2023-08-30T21:44:11.58 0.3 positive manual P -0.1 1.5
IV.FRON.EHZ. 2023-08-30T21:44:11.83 1.0 undecidable manual P 53 22.1556 112 -0.14 24
IV.MURB.HHZ. 2023-08-30T21:44:10.60 0.1 positive manual P 174 14.874 121 -0.05 99
IV.PIEI.HHZ. 2023-08-30T21:44:10.94 0.6 positive manual P 8 15.5733 120 0.16 48
IV.ATPI.EHZ. 2023-08-30T21:44:10.07 0.1 positive manual P 0.01 2
IV.ATVO.HHZ. 2023-08-30T21:44:09.57 0.1 positive manual P -0.12 2
IV.ATFO.HHZ. 2023-08-30T21:44:09.05 1.0 negative manual P -0.22 0.5
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MURB.HNN. ML:1.4 0.00025995755 0.256 AML other m 2023-08-30T21:44:13.57
IV.MURB.HHN. ML:1.5 0.00032763705 0.192 AML other m 2023-08-30T21:44:13.55
IV.MURB.HNE. ML:1.5 0.00030955065 0.2688 AML other m 2023-08-30T21:44:15.91
IV.PIEI.HHN. ML:1.2 0.00013800000000000002 0.2 AML other m 2023-08-30T21:44:14.38
IV.PIEI.HHE. ML:1.2 0.00016044681499999998 0.1536 AML other m 2023-08-30T21:44:14.41
IV.MURB.HHE. ML:1.6 0.000367 1.7 AML other m 2023-08-30T21:44:15.05
IV.FRON.EHE. ML:0.8 0.000042117475 0.064 AML other m 2023-08-30T21:44:16.58
IV.NARO.HHE. ML:1.0 0.000056965045 0.2048 AML other m 2023-08-30T21:44:16.20
IV.FRON.EHN. ML:1.1 0.00008342628499999998 0.0768 AML other m 2023-08-30T21:44:15.95
IV.NARO.HHN. ML:0.7 0.00003195643500000001 0.064 AML other m 2023-08-30T21:44:17.25
IV.PIEI.HNE. ML:1.3 0.0001818593 0.192 AML other m 2023-08-30T21:44:14.41
IV.FOSV.HNN. ML:1.0 0.000068678535 0.2944 AML other m 2023-08-30T21:44:17.63
IV.FOSV.EHE. ML:0.5 0.000018463050000000003 0.2304 AML other m 2023-08-30T21:44:18.73
IV.FOSV.EHN. ML:0.5 0.000022494695000000003 0.2432 AML other m 2023-08-30T21:44:18.71
IV.MPAG.EHE. ML:0.7 0.0000196810395 0.3712 AML other m 2023-08-30T21:44:22.80
IV.MPAG.EHN. ML:0.5 0.000016909905500000004 0.128 AML other m 2023-08-30T21:44:20.93
IV.CAFI.HHE. ML:0.5 0.000009515754 0.2048 AML other m 2023-08-30T21:44:24.50
IV.FDMO.HHE. ML:0.7 0.000008812763 0.1408 AML other m 2023-08-30T21:44:27.91
IV.FDMO.HHN. ML:0.7 0.0000110072035 0.1408 AML other m 2023-08-30T21:44:27.69
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