Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 30-03-2020 and time 09:41:49 (UTC) in region 4 km E Valtopina (PG)

A magnitude ML 0.8 earthquake occured in region: 4 km E Valtopina (PG), on

  • 30-03-2020 09:41:49 (UTC)
  • 30-03-2020 11:41:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0620, 12.7990 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
Valtopina PG 4 1398 1398
Nocera Umbra PG 6 5839 7237
Serravalle di Chienti MC 13 1070 8307
Spello PG 13 8645 16952
Foligno PG 14 57155 74107
Assisi PG 15 28299 102406
Sefro MC 16 422 102828
Fiuminata MC 18 1402 104230
Monte Cavallo MC 18 145 104375
Gualdo Tadino PG 19 15208 119583
Cannara PG 19 4305 123888
Valfabbrica PG 19 3389 127277

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km NE of Foligno (57155 inhabitants)
34 Km E of Perugia (166134 inhabitants)
57 Km N of Terni (111501 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
86 Km NW of Teramo (54892 inhabitants)
87 Km SE of Arezzo (99543 inhabitants)
89 Km S of Fano (60888 inhabitants)
91 Km NE of Viterbo (67173 inhabitants)
93 Km NW of L'Aquila (69753 inhabitants)
95 Km S of Pesaro (94582 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 0.8 2020-03-30
09:41:49		 43.0618 12.799 10 2020-03-30
09:48:20		 Sala Sismica INGV-Roma 77698711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-30 09:41:49 ± 0.06
Latitude 43.0618 ± 0.0036
Longitude 12.7990 ± 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 77698711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 385
Semi-minor axis of confidence ellipse (meter) 199
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 207
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 189
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.34624
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 77698711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-30 09:48:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2020-03-30T09:42:05.44 3.0 undecidable manual S -0.16 0
IV.EL6.EHZ. 2020-03-30T09:42:02.36 0.3 undecidable manual S 39 38.4282 50 0.17 69
IV.MURB.HHZ. 2020-03-30T09:42:00.47 0.6 undecidable manual S 315 31.4463 50 0.14 47
IV.SNTG.HHZ. 2020-03-30T09:41:58.15 0.3 undecidable manual S 28 24.2535 112 -0.07 72
IV.FDMO.HHZ. 2020-03-30T09:41:57.87 0.3 undecidable manual S 97 23.5542 112 -0.1 72
IV.ATCC.EHZ. 2020-03-30T09:41:56.55 0.3 undecidable manual S 317 18.7701 117 0.08 73
IV.EL6.EHZ. 2020-03-30T09:41:56.63 0.1 undecidable manual P 39 38.4282 50 -0.05 95
IV.MURB.HHZ. 2020-03-30T09:41:55.38 0.1 undecidable manual P 315 31.4463 50 -0.22 92
IV.SNTG.HHZ. 2020-03-30T09:41:54.37 0.1 undecidable manual P 28 24.2535 112 -0.01 98
IV.FDMO.HHZ. 2020-03-30T09:41:54.29 0.1 undecidable manual P 97 23.5542 112 0.05 97
IV.CESI.HHZ. 2020-03-30T09:41:54.14 0.1 undecidable manual S 126 10.6782 132 0.01 100
IV.ATCC.EHZ. 2020-03-30T09:41:53.43 1.0 negative manual P 317 18.7701 117 0.05 24
IV.CESI.HHZ. 2020-03-30T09:41:52.17 0.6 undecidable manual P 126 10.6782 132 0.15 49
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:0.7 0.0000626 0.6 AML other m 2020-03-30T09:41:54.30
IV.CESI.HHN. ML:0.7 0.00006365 0.58 AML other m 2020-03-30T09:41:54.96
IV.ATCC.EHE. ML:1.2 0.0001389 0.14 AML other m 2020-03-30T09:41:56.83
IV.ATCC.EHN. ML:1.1 0.00008845 1.66 AML other m 2020-03-30T09:41:57.85
IV.FDMO.HHE. ML:0.5 0.00001881924 0.3392 AML other m 2020-03-30T09:41:57.92
IV.FDMO.HHN. ML:0.4 0.000014355409999999999 2.1952 AML other m 2020-03-30T09:41:58.42
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