Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 21-03-2023 and time 19:21:59 (UTC) in region 5 km E Umbertide (PG)

A magnitude ML 1.2 earthquake occured in region: 5 km E Umbertide (PG), on

  • 21-03-2023 19:21:59 (UTC)
  • 21-03-2023 20:21:59 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.3040, 12.3900 at 10 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 8 1680 18361
Pietralunga PG 16 2111 20472
Gubbio PG 16 32216 52688

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km N of Perugia (166134 inhabitants)
45 Km E of Arezzo (99543 inhabitants)
46 Km NW of Foligno (57155 inhabitants)
79 Km SW of Fano (60888 inhabitants)
80 Km SW of Pesaro (94582 inhabitants)
85 Km N of Terni (111501 inhabitants)
86 Km S of Rimini (147750 inhabitants)
86 Km E of Siena (53903 inhabitants)
93 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 1.2 2023-03-21
19:21:59		 43.3038 12.3898 10 2023-03-21
19:28:17		 Sala Sismica INGV-Roma 115603501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-21 19:21:59 ± 0.05
Latitude 43.3038 ± 0.0027
Longitude 12.3898 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 115603501

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 308
Semi-minor axis of confidence ellipse (meter) 195
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 37
Circular confidence region, given by single value of horizontal uncertainty (meter) 310.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 64
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) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.07914
Epicentral distance of station farthest from the epicenter (degree) 0.70777
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:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 36
Type of magnitude ML
Reference to an origin 115603501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-21 19:28:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2023-03-21T19:22:13.63 1.0 negative manual P 131 78.5658 50 -0.02 22
IV.CSP1.EHZ. 2023-03-21T19:22:12.30 1.0 undecidable manual P 109 69.9744 50 -0.03 22
IV.EL6.EHZ. 2023-03-21T19:22:11.02 1.0 negative manual P 87 57.498 50 0.61 20
IV.SACS.HHZ. 2023-03-21T19:22:11.56 1.0 negative manual P 218 63.6918 50 0.2 22
IV.SSFR.HHZ. 2023-03-21T19:22:11.95 0.6 undecidable manual S 65 34.9428 50 -0.09 47
IV.FDMO.HHZ. 2023-03-21T19:22:11.25 0.6 negative manual P 117 63.7917 50 -0.12 45
IV.PIEI.HHZ. 2023-03-21T19:22:10.23 0.6 undecidable manual S 24 28.2495 109 -0.04 48
IV.ARVD.HHZ. 2023-03-21T19:22:09.18 0.3 negative manual P 64 49.4172 50 0.02 70
IV.ATCC.EHZ. 2023-03-21T19:22:09.00 0.6 undecidable manual S 123 24.1536 111 0.08 48
IV.MGAB.HHZ. 2023-03-21T19:22:09.13 0.3 positive manual P 207 48.9177 50 0.05 70
IV.BADI.EHZ. 2023-03-21T19:22:09.17 0.6 undecidable manual S 333 25.6521 110 -0.24 47
IV.MML1.EHZ. 2023-03-21T19:22:09.66 1.0 negative manual P 114 51.6039 50 0.16 23
IV.PARC.HHZ. 2023-03-21T19:22:08.54 0.6 positive manual P 342 40.1265 50 0.81 38
IV.NARO.HHZ. 2023-03-21T19:22:07.20 0.1 negative manual P 24 37.3293 50 -0.1 94
IV.ATFO.HHZ. 2023-03-21T19:22:06.59 0.6 undecidable manual S 65 16.2726 120 0.15 48
IV.SSFR.HHZ. 2023-03-21T19:22:06.59 1.0 undecidable manual P 65 34.9428 50 -0.33 22
IV.ASSB.HHZ. 2023-03-21T19:22:06.84 0.6 negative manual P 143 36.2415 50 -0.29 45
IV.FRON.EHZ. 2023-03-21T19:22:06.96 0.6 negative manual P 49 36.0417 50 -0.13 47
IV.ATPI.EHZ. 2023-03-21T19:22:06.54 0.6 undecidable manual S 4 16.2726 120 0.07 49
IV.CAFI.HHZ. 2023-03-21T19:22:06.86 0.6 positive manual P 275 34.3434 50 0.03 48
IV.FOSV.EHZ. 2023-03-21T19:22:05.83 0.6 undecidable manual P 92 30.0477 50 -0.34 45
IV.MURB.HHZ. 2023-03-21T19:22:05.28 0.6 undecidable manual S 113 11.7771 129 0.11 49
IV.ATCC.EHZ. 2023-03-21T19:22:05.01 0.1 positive manual P 123 24.1536 111 -0.11 96
IV.PIEI.HHZ. 2023-03-21T19:22:05.92 0.3 negative manual P 24 28.2495 109 0.03 73
IV.BADI.EHZ. 2023-03-21T19:22:05.41 0.1 undecidable manual P 333 25.6521 110 0 98
IV.ATVO.HHZ. 2023-03-21T19:22:04.20 0.6 undecidable manual S 9 8.7801 137 -0.2 48
IV.ATMI.HHZ. 2023-03-21T19:22:04.62 0.6 undecidable manual S 289 10.3785 132 -0.18 48
IV.ATPI.EHZ. 2023-03-21T19:22:03.79 0.1 undecidable manual P 4 16.2726 120 0.09 98
IV.ATFO.HHZ. 2023-03-21T19:22:03.80 0.3 positive manual P 65 16.2726 120 0.11 73
IV.ATVO.HHZ. 2023-03-21T19:22:02.48 0.1 positive manual P 9 8.7801 137 -0.03 100
IV.ATMI.HHZ. 2023-03-21T19:22:02.79 0.3 positive manual P 289 10.3785 132 0.05 75
IV.MURB.HHZ. 2023-03-21T19:22:02.98 0.1 positive manual P 113 11.7771 129 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATVO.HHN. ML:1.0 0.0001625 1.42 AML other m 2023-03-21T19:22:04.28
IV.ATVO.HHE. ML:1.3 0.00027949999999999996 0.58 AML other m 2023-03-21T19:22:05.40
IV.MURB.HNN. ML:2.2 0.00166 0.96 AML other m 2023-03-21T19:22:05.42
IV.MURB.HHN. ML:2.1 0.00163 0.22 AML other m 2023-03-21T19:22:05.42
IV.ATMI.HHE. ML:1.3 0.000272 0.46 AML other m 2023-03-21T19:22:05.66
IV.MURB.HHE. ML:2.1 0.001435 1.26 AML other m 2023-03-21T19:22:05.36
IV.MURB.HNE. ML:2.0 0.001295 0.72 AML other m 2023-03-21T19:22:06.36
IV.ATMI.HHN. ML:1.3 0.000237 0.18 AML other m 2023-03-21T19:22:06.25
IV.ATPI.EHN. ML:1.2 0.0001395 0.24 AML other m 2023-03-21T19:22:06.79
IV.ATPI.EHE. ML:1.3 0.00017649999999999998 1.54 AML other m 2023-03-21T19:22:06.14
IV.ATFO.HHN. ML:1.4 0.0002485 0.38 AML other m 2023-03-21T19:22:07.23
IV.ATFO.HHE. ML:1.4 0.000256 0.54 AML other m 2023-03-21T19:22:07.29
IV.ATCC.EHE. ML:1.4 0.0001655 1.18 AML other m 2023-03-21T19:22:09.95
IV.BADI.EHE. ML:0.9 0.0000521 0.48 AML other m 2023-03-21T19:22:10.19
IV.FOSV.EHE. ML:0.9 0.00004065 1.34 AML other m 2023-03-21T19:22:10.09
IV.PIEI.HHE. ML:1.3 0.0000968 1.7 AML other m 2023-03-21T19:22:11.02
IV.PIEI.HHN. ML:1.1 0.0000713 0.42 AML other m 2023-03-21T19:22:11.86
IV.SSFR.HHN. ML:1.5 0.00012064999999999999 0.22 AML other m 2023-03-21T19:22:12.49
IV.SSFR.HHE. ML:1.7 0.000193 0.22 AML other m 2023-03-21T19:22:12.76
IV.ATCC.EHN. ML:1.2 0.000107 0.3 AML other m 2023-03-21T19:22:12.72
IV.NARO.HHE. ML:1.0 0.00003695 0.54 AML other m 2023-03-21T19:22:13.18
IV.BADI.EHN. ML:0.9 0.000044899999999999994 0.78 AML other m 2023-03-21T19:22:13.20
IV.CAFI.HHE. ML:1.1 0.00005115 0.18 AML other m 2023-03-21T19:22:13.32
IV.CAFI.HHN. ML:1.0 0.00004285 0.54 AML other m 2023-03-21T19:22:13.31
IV.NARO.HHN. ML:0.9 0.00002815 1.08 AML other m 2023-03-21T19:22:13.33
IV.ASSB.HHE. ML:1.0 0.000038350000000000004 0.52 AML other m 2023-03-21T19:22:13.41
IV.ASSB.HHN. ML:1.1 0.000048299999999999995 0.2 AML other m 2023-03-21T19:22:13.45
IV.FOSV.EHN. ML:0.9 0.00003850000000000001 0.7 AML other m 2023-03-21T19:22:13.65
IV.FRON.EHE. ML:1.0 0.00003715 1.22 AML other m 2023-03-21T19:22:14.79
IV.FRON.EHN. ML:1.2 0.00006500000000000001 0.66 AML other m 2023-03-21T19:22:14.56
IV.PARC.HHN. ML:0.9 0.00002595 0.44 AML other m 2023-03-21T19:22:14.86
IV.PARC.HHE. ML:1.0 0.000037 0.46 AML other m 2023-03-21T19:22:16.15
IV.MGAB.HHN. ML:1.4 0.00006735 1.3 AML other m 2023-03-21T19:22:18.00
IV.MGAB.HHE. ML:1.3 0.00004775 1.22 AML other m 2023-03-21T19:22:20.27
IV.SACS.HHE. ML:1.2 0.0000289 1.4 AML other m 2023-03-21T19:22:23.79
IV.SACS.HHN. ML:1.3 0.0000329 0.42 AML other m 2023-03-21T19:22:23.91
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