Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 18-12-2023 and time 20:48:37 (UTC) in region 4 km NE Umbertide (PG)

A magnitude ML 1.3 earthquake occured in region: 4 km NE Umbertide (PG), on

  • 18-12-2023 20:48:37 (UTC)
  • 18-12-2023 21:48:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.3300, 12.3680 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 4 16681 16681
Montone PG 5 1680 18361
Pietralunga PG 14 2111 20472
Gubbio PG 17 32216 52688
Città di Castello PG 18 39913 92601

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km N of Perugia (166134 inhabitants)
42 Km E of Arezzo (99543 inhabitants)
50 Km NW of Foligno (57155 inhabitants)
78 Km SW of Fano (60888 inhabitants)
78 Km SW of Pesaro (94582 inhabitants)
83 Km S of Rimini (147750 inhabitants)
84 Km E of Siena (53903 inhabitants)
88 Km N of Terni (111501 inhabitants)
90 Km S of Cesena (96758 inhabitants)
98 Km W of Ancona (100861 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 1.3 2023-12-18
20:48:37		 43.33 12.3683 9 2023-12-18
21:05:21		 Sala Sismica INGV-Roma 124132461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-18 20:48:37 ± 0.05
Latitude 43.3300 ± 0.0027
Longitude 12.3683 ± 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 124132461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 300
Semi-minor axis of confidence ellipse (meter) 267
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 335
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) 60
Number of associated phases, regardless of their use for origin computation 45
Number of defining phases 45
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.03148
Epicentral distance of station farthest from the epicenter (degree) 0.45686
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 23
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 33
Type of magnitude ML
Reference to an origin 124132461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-18 21:05:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2023-12-18T20:48:54.28 0.6 undecidable manual S 68 49.8168 50 0.06 46
IV.CRE.HHZ. 2023-12-18T20:48:53.33 0.6 undecidable manual S 314 46.4202 50 0.02 47
IV.MPAG.EHZ. 2023-12-18T20:48:53.38 0.6 undecidable manual S 43 45.7209 50 0.24 45
IV.ASSB.HHZ. 2023-12-18T20:48:51.50 0.6 undecidable manual S 144 39.627 50 0 48
IV.SSFR.HHZ. 2023-12-18T20:48:50.62 0.6 undecidable manual S 70 35.4423 50 0.24 46
IV.NARO.HHZ. 2023-12-18T20:48:49.83 0.6 undecidable manual S 29 35.5422 50 -0.58 42
IV.CAFI.HHZ. 2023-12-18T20:48:49.04 0.6 undecidable manual S 270 32.4453 50 -0.55 43
IV.PIEI.HHZ. 2023-12-18T20:48:47.85 0.6 undecidable manual S 30 26.4513 108 0.21 47
IV.ATCC.EHZ. 2023-12-18T20:48:47.94 0.6 undecidable manual S 126 27.1506 108 0.06 48
IV.ARVD.HHZ. 2023-12-18T20:48:47.29 0.6 negative manual P 68 49.8168 50 -0.06 46
IV.MGAB.HHZ. 2023-12-18T20:48:47.65 0.3 positive manual P 204 50.7159 50 0.16 68
IV.BADI.EHZ. 2023-12-18T20:48:46.64 0.6 undecidable manual S 333 22.2555 112 0.36 46
IV.MPAG.EHZ. 2023-12-18T20:48:46.62 0.6 undecidable manual P 43 45.7209 50 -0.11 46
IV.CRE.HHZ. 2023-12-18T20:48:46.96 1.0 undecidable manual P 314 46.4202 50 0.14 23
IV.SSFR.HHZ. 2023-12-18T20:48:45.06 0.3 negative manual P 70 35.4423 50 -0.06 71
IV.ASSB.HHZ. 2023-12-18T20:48:45.48 1.0 undecidable manual P 144 39.627 50 -0.3 22
IV.CAFI.HHZ. 2023-12-18T20:48:44.47 0.1 undecidable manual P 270 32.4453 50 -0.2 92
IV.ATFO.HHZ. 2023-12-18T20:48:44.68 0.6 undecidable manual S 76 16.872 117 0.11 48
IV.NARO.HHZ. 2023-12-18T20:48:44.88 0.3 positive manual P 29 35.5422 50 -0.27 68
IV.MURB.HHZ. 2023-12-18T20:48:44.24 0.6 undecidable manual S 120 14.6742 121 0.36 46
IV.BADI.EHZ. 2023-12-18T20:48:43.07 1.0 undecidable manual P 333 22.2555 112 0.31 23
IV.ATPI.EHZ. 2023-12-18T20:48:43.71 0.6 undecidable manual S 12 13.6752 123 0.11 49
IV.PIEI.HHZ. 2023-12-18T20:48:43.60 0.3 negative manual P 30 26.4513 108 0.05 72
IV.ATCC.EHZ. 2023-12-18T20:48:43.73 1.0 undecidable manual P 126 27.1506 108 0.04 24
IV.ATMI.HHZ. 2023-12-18T20:48:42.26 0.6 undecidable manual S 273 8.0808 137 0.15 49
IV.ATVA.EHE. 2023-12-18T20:48:42.50 0.6 undecidable manual S 230 8.7801 135 0.22 48
IV.TB03.DH2. 2023-12-18T20:48:42.08 0.6 undecidable manual S 23 8.5803 136 -0.15 49
IV.MURB.HHZ. 2023-12-18T20:48:41.58 0.3 undecidable manual P 120 14.6742 121 0.2 72
IV.TB01.DHZ.01 2023-12-18T20:48:41.86 0.6 undecidable manual S 43 7.881 138 -0.2 48
IV.TB02.DH1. 2023-12-18T20:48:41.12 0.6 undecidable manual S 36 5.5944 148 -0.46 46
IV.TSM4.DHE.01 2023-12-18T20:48:41.32 0.6 undecidable manual S 245 5.6943 147 -0.27 48
IV.ATFO.HHZ. 2023-12-18T20:48:41.88 0.3 undecidable manual P 76 16.872 117 0.11 73
IV.TSM3.DHE.01 2023-12-18T20:48:41.51 0.6 undecidable manual S 350 5.994 146 -0.14 49
IV.ATVO.HHZ. 2023-12-18T20:48:41.54 0.6 undecidable manual S 28 6.5934 143 -0.23 48
IV.ATPI.EHZ. 2023-12-18T20:48:41.44 1.0 undecidable manual P 12 13.6752 123 0.22 24
IV.TSM3.DHE.01 2023-12-18T20:48:40.28 0.1 undecidable manual P 350 5.994 146 0.19 97
IV.ATVA.EHE. 2023-12-18T20:48:40.56 0.1 undecidable manual P 230 8.7801 135 0.11 98
IV.ATVO.HHZ. 2023-12-18T20:48:40.27 0.1 positive manual P 28 6.5934 143 0.12 98
IV.ATLO.EHE. 2023-12-18T20:48:40.55 0.1 undecidable manual S 118 3.4965 158 -0.7 84
IV.TB03.DH2. 2023-12-18T20:48:40.51 0.1 undecidable manual P 23 8.5803 136 0.08 99
IV.ATMI.HHZ. 2023-12-18T20:48:40.63 0.6 undecidable manual P 273 8.0808 137 0.28 47
IV.TB01.DHZ.01 2023-12-18T20:48:40.40 0.1 undecidable manual P 43 7.881 138 0.07 99
IV.TB02.DH1. 2023-12-18T20:48:40.09 0.1 undecidable manual P 36 5.5944 148 0.05 100
IV.TSM4.DHE.01 2023-12-18T20:48:40.17 0.1 undecidable manual P 245 5.6943 147 0.12 99
IV.ATLO.EHE. 2023-12-18T20:48:39.75 0.1 undecidable manual P 118 3.4965 158 -0.11 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATVO.HHE. ML:1.6 0.00079 0.8 AML other m 2023-12-18T20:48:41.95
IV.ATVO.HNE. ML:1.6 0.0007035 0.82 AML other m 2023-12-18T20:48:41.96
IV.ATVO.HNN. ML:1.6 0.00073 1.82 AML other m 2023-12-18T20:48:41.05
IV.ATVO.HHN. ML:1.6 0.000796 0.1 AML other m 2023-12-18T20:48:42.05
IV.ATMI.HHE. ML:1.3 0.00032799999999999995 0.86 AML other m 2023-12-18T20:48:42.35
IV.ATPI.EHN. ML:1.3 0.00021799999999999999 0.12 AML other m 2023-12-18T20:48:43.97
IV.ATPI.EHE. ML:1.4 0.00023899999999999998 0.12 AML other m 2023-12-18T20:48:43.93
IV.MURB.HNE. ML:1.7 0.0005188825500000001 0.1792 AML other m 2023-12-18T20:48:45.13
IV.MURB.HHN. ML:1.7 0.0005335 0.16 AML other m 2023-12-18T20:48:44.95
IV.MURB.HNN. ML:1.5 0.0003555 1.74 AML other m 2023-12-18T20:48:44.96
IV.MURB.HHE. ML:1.7 0.0005669999999999999 0.16 AML other m 2023-12-18T20:48:45.03
IV.ATFO.HHN. ML:1.4 0.000241 0.24 AML other m 2023-12-18T20:48:45.22
IV.ATFO.HHE. ML:1.3 0.000171 1.26 AML other m 2023-12-18T20:48:45.20
IV.ATMI.HHN. ML:1.2 0.0002664508 0.3456 AML other m 2023-12-18T20:48:46.18
IV.BADI.EHE. ML:1.0 0.00007630000000000001 0.66 AML other m 2023-12-18T20:48:47.24
IV.PIEI.HHE. ML:1.2 0.00008175000000000001 0.6 AML other m 2023-12-18T20:48:48.07
IV.PIEI.HHN. ML:1.0 0.000056349999999999994 0.54 AML other m 2023-12-18T20:48:48.47
IV.BADI.EHN. ML:1.0 0.0000761 0.68 AML other m 2023-12-18T20:48:48.61
IV.ATCC.EHE. ML:1.1 0.0000659 0.96 AML other m 2023-12-18T20:48:49.67
IV.CAFI.HHN. ML:0.9 0.00003585 0.52 AML other m 2023-12-18T20:48:49.48
IV.CAFI.HHE. ML:1.1 0.00005435 0.14 AML other m 2023-12-18T20:48:49.80
IV.ATCC.EHN. ML:1.0 0.000052 1.2 AML other m 2023-12-18T20:48:49.35
IV.NARO.HHE. ML:0.9 0.0000329 0.46 AML other m 2023-12-18T20:48:50.33
IV.NARO.HHN. ML:0.8 0.000026799999999999998 0.36 AML other m 2023-12-18T20:48:50.86
IV.ASSB.HHN. ML:0.9 0.000030550000000000004 1.46 AML other m 2023-12-18T20:48:53.04
IV.ASSB.HHE. ML:1.0 0.0000359 1.5 AML other m 2023-12-18T20:48:53.87
IV.MGAB.HHE. ML:1.2 0.0000438 0.98 AML other m 2023-12-18T20:48:56.67
IV.MGAB.HHN. ML:1.4 0.00006459999999999998 1 AML other m 2023-12-18T20:48:57.31
IV.ATPI.HNE. ML:1.3 0.00023653455000000002 0.1152 AML other m 2023-12-18T20:48:43.93
IV.ATPI.HNN. ML:1.3 0.00022785355 0.128 AML other m 2023-12-18T20:48:43.97
IV.ATFO.HNE. ML:1.2 0.00016204734500000002 0.256 AML other m 2023-12-18T20:48:45.06
IV.ATFO.HNN. ML:1.4 0.0002498555 0.2176 AML other m 2023-12-18T20:48:45.11
IV.PIEI.HNE. ML:1.3 0.000103702525 0.2176 AML other m 2023-12-18T20:48:48.38
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