Earthquake with magnitude of ML 1.8 on date 26-09-2023 and time 05:36:16 (UTC) in region 6 km W Giano dell'Umbria (PG)

A magnitude ML 1.8 earthquake occured in region: 6 km W Giano dell'Umbria (PG), on

  • 26-09-2023 05:36:16 (UTC)
  • 26-09-2023 07:36:16 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8320, 12.5100 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
Giano dell'Umbria PG 6 3846 3846
Massa Martana PG 6 3770 7616
Collazzone PG 9 3473 11089
Gualdo Cattaneo PG 10 6155 17244
Todi PG 10 16851 34095
Fratta Todina PG 12 1839 35934
Monte Castello di Vibio PG 13 1567 37501
Castel Ritaldi PG 13 3278 40779
Montefalco PG 14 5679 46458
Bevagna PG 14 5081 51539
Acquasparta TR 16 4778 56317
Marsciano PG 16 18902 75219
Deruta PG 18 9669 84888
Cannara PG 19 4305 89193

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km SW of Foligno (57155 inhabitants)
32 Km NW of Terni (111501 inhabitants)
32 Km SE of Perugia (166134 inhabitants)
57 Km NE of Viterbo (67173 inhabitants)
87 Km SE of Arezzo (99543 inhabitants)
90 Km NW of L'Aquila (69753 inhabitants)
94 Km N of Guidonia Montecelio (88673 inhabitants)
99 Km N of Tivoli (56533 inhabitants)
100 Km W of Teramo (54892 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 1.8 2023-09-26
05:36:16
42.8322 12.5102 8 2023-09-26
05:47:05
Sala Sismica INGV-Roma 121468451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-26 05:36:16 ± 0.16
Latitude 42.8322 ± 0.0153
Longitude 12.5102 ± 0.0110
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 121468451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1659
Semi-minor axis of confidence ellipse (meter) 812
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 191
Circular confidence region, given by single value of horizontal uncertainty (meter) 1660.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 163
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.42
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.63582
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 121468451
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-26 05:47:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SALB.HHZ. 2023-09-26T05:37:50.18 3.0 undecidable manual Sn 1.87 0
IV.ACATE.EHZ. 2023-09-26T05:37:48.02 3.0 undecidable manual Pg 15.27 0
MN.TRI.HHZ. 2023-09-26T05:37:35.90 3.0 undecidable manual Sn 4.07 0
IV.CDRU.HHZ. 2023-09-26T05:37:32.61 3.0 undecidable manual Sg 8.08 0
AC.VLO.HHZ. 2023-09-26T05:37:26.15 3.0 positive manual Pn -0.71 0
IV.ZEN8.EHZ. 2023-09-26T05:37:15.53 3.0 undecidable manual Pg 15.36 0
IV.MCRV.HHZ. 2023-09-26T05:37:11.01 3.0 undecidable manual Sn -6.29 0
IV.SGTA.HHZ. 2023-09-26T05:37:08.87 3.0 undecidable manual Sn -4.68 0
IV.SALB.HHZ. 2023-09-26T05:37:05.54 3.0 undecidable manual Pn 0.37 0
IV.VITU.HHZ. 2023-09-26T05:37:02.35 3.0 undecidable manual Sn -1.07 0
IV.MOCO.HHZ. 2023-09-26T05:37:01.98 3.0 undecidable manual Sn -4.91 0
ZO.PDN2.EHZ. 2023-09-26T05:36:58.70 3.0 negative manual Pn 0.8 0
IV.MGR.HNZ. 2023-09-26T05:36:55.85 3.0 negative manual Pn -1.44 0
IT.AVL.HNZ. 2023-09-26T05:36:47.06 3.0 undecidable manual Pg 3.27 0
OT.OT17.EHZ. 2023-09-26T05:36:40.68 3.0 positive manual Pn -0.47 0
IV.CAFI.HHZ. 2023-09-26T05:36:38.61 0.1 undecidable manual S 322 70.5738 50 0.07 88
IV.CSP1.EHZ. 2023-09-26T05:36:37.53 0.1 undecidable manual S 63 63.2922 50 0.92 68
IV.NRCA.HHZ. 2023-09-26T05:36:33.24 0.1 undecidable manual S 90 49.1175 50 0.42 84
IV.MURB.HHZ. 2023-09-26T05:36:32.38 0.1 undecidable manual S 1 47.8188 50 -0.08 91
IV.MML1.EHZ. 2023-09-26T05:36:32.72 0.1 undecidable manual S 50 48.7179 50 0 93
IV.MGAB.HHZ. 2023-09-26T05:36:29.42 0.1 undecidable manual S 286 33.5442 50 0.76 76
IV.CAFI.HHZ. 2023-09-26T05:36:28.80 0.6 positive manual P 322 70.5738 50 -0.49 40
IV.CSP1.EHZ. 2023-09-26T05:36:28.02 0.1 undecidable manual P 63 63.2922 50 -0.15 88
IV.POFI.HHZ. 2023-09-26T05:36:27.66 3.0 undecidable manual P -0.95 0
IV.ATCC.EHZ. 2023-09-26T05:36:27.47 3.0 undecidable manual Sn -3.45 0
IV.MML1.EHZ. 2023-09-26T05:36:25.38 0.1 undecidable manual P 50 48.7179 50 -0.55 82
IV.MURB.HHZ. 2023-09-26T05:36:25.71 0.1 undecidable manual P 1 47.8188 50 -0.07 91
IV.NRCA.HHZ. 2023-09-26T05:36:25.19 0.1 undecidable manual P 90 49.1175 50 -0.8 75
IV.MGAB.HHZ. 2023-09-26T05:36:23.04 0.6 negative manual P 286 33.5442 50 -0.55 43
IV.GAVE.EHN. 2023-09-26T05:36:23.54 0.1 undecidable manual P 116 34.9428 50 -0.26 91
IV.OFFI.HHZ. 2023-09-26T05:36:21.98 3.0 undecidable manual P 0.81 0
IV.MOMA.HHZ. 2023-09-26T05:36:20.53 0.1 undecidable manual S 123 5.7942 145 0.32 94
IT.GNU.HGE. 2023-09-26T05:36:20.22 0.1 undecidable manual S 123 5.7942 145 0.01 100
IV.ATCC.EHZ. 2023-09-26T05:36:18.69 3.0 negative manual Pn -3 0
IV.MOMA.HHZ. 2023-09-26T05:36:18.72 0.1 positive manual P 123 5.7942 145 0.02 100
IT.GNU.HGE. 2023-09-26T05:36:18.72 0.1 undecidable manual P 123 5.7942 145 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HNE. ML:2.1 0.0021799999999999996 0.4 AML other m 2023-09-26T05:36:21.78
IV.MOMA.HHN. ML:2.0 0.00177 0.26 AML other m 2023-09-26T05:36:21.78
IV.MOMA.HNN. ML:1.9 0.00141 0.22 AML other m 2023-09-26T05:36:21.79
IV.MOMA.HHE. ML:1.9 0.00155 0.74 AML other m 2023-09-26T05:36:22.60
IV.MGAB.HHE. ML:1.2 0.00006839999999999998 1.58 AML other m 2023-09-26T05:36:30.94
IV.ATCC.EHN. ML:1.5 0.0001175 1.1 AML other m 2023-09-26T05:36:31.75
IV.MGAB.HHN. ML:1.4 0.00011399999999999999 0.76 AML other m 2023-09-26T05:36:32.52
IV.MURB.HHE. ML:1.9 0.00023500000000000002 0.94 AML other m 2023-09-26T05:36:33.60
IV.MURB.HHN. ML:1.8 0.000163 0.38 AML other m 2023-09-26T05:36:35.63
IV.ATCC.EHE. ML:1.7 0.00015304999999999998 1.2 AML other m 2023-09-26T05:36:37.31
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