Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 21-03-2020 and time 02:12:39 (Italy) in region 4 km NW Sellano (PG)

A magnitude ML 1.1 earthquake occured in region: 4 km NW Sellano (PG), on

  • 21-03-2020 01:12:39 (UTC)
  • 21-03-2020 02:12:39 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9100, 12.8890 at 11 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
Sellano PG 4 1079 1079
Cerreto di Spoleto PG 10 1075 2154
Trevi PG 12 8469 10623
Preci PG 13 724 11347
Monte Cavallo MC 13 145 11492
Campello sul Clitunno PG 13 2442 13934
Vallo di Nera PG 16 364 14298
Foligno PG 16 57155 71453
Visso MC 17 1107 72560
Serravalle di Chienti MC 19 1070 73630
Montefalco PG 19 5679 79309
Valtopina PG 20 1398 80707
Pieve Torina MC 20 1458 82165
Sant'Anatolia di Narco PG 20 564 82729
Spello PG 20 8645 91374

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km E of Foligno (57155 inhabitants)
43 Km NE of Terni (111501 inhabitants)
46 Km E of Perugia (166134 inhabitants)
72 Km W of Teramo (54892 inhabitants)
75 Km NW of L'Aquila (69753 inhabitants)
84 Km NE of Viterbo (67173 inhabitants)
94 Km SW 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 1.1 2020-03-21
01:12:39		 42.9098 12.8892 11 2020-03-21
01:26:22		 Sala Sismica INGV-Roma 77421371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-21 01:12:39 ± 0.04
Latitude 42.9098 ± 0.0027
Longitude 12.8892 ± 0.0025
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77421371

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 232
Semi-minor axis of confidence ellipse (meter) 232
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 105
Circular confidence region, given by single value of horizontal uncertainty (meter) 230.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 56
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 33
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) 0.44696
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 17
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 13
Type of magnitude ML
Reference to an origin 77421371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-21 01:26:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LAV9.HHZ. 2020-03-21T01:13:18.36 3.0 undecidable manual S -0.16 0
IV.EL6.EHZ. 2020-03-21T01:12:55.42 0.3 undecidable manual S 20 49.617 50 0.2 69
IV.CESX.HHZ. 2020-03-21T01:12:53.09 0.3 undecidable manual S 216 41.5251 50 0.02 73
IV.SNTG.HHZ. 2020-03-21T01:12:52.23 0.6 undecidable manual S 6 38.5281 50 -0.03 49
IV.MMO1.EHZ. 2020-03-21T01:12:51.42 0.3 undecidable manual S 92 35.5422 50 -0.06 73
IV.ATCC.EHZ. 2020-03-21T01:12:51.68 0.3 undecidable manual S 327 36.6411 50 -0.08 72
IV.LNSS.HHZ. 2020-03-21T01:12:51.64 0.3 undecidable manual S 160 36.2415 50 -0.01 73
IV.CSP1.EHZ. 2020-03-21T01:12:50.73 0.6 undecidable manual S 52 32.6451 50 0.05 49
IV.MOMA.HHZ. 2020-03-21T01:12:49.52 0.6 undecidable manual S 246 28.4493 50 -0.07 49
IV.MML1.HNE. 2020-03-21T01:12:48.10 0.3 undecidable manual S 16 23.5542 50 -0.17 73
IV.MC2.EHE. 2020-03-21T01:12:48.64 0.3 undecidable manual S 90 24.3534 50 0.16 73
IV.EL6.EHZ. 2020-03-21T01:12:48.53 0.3 undecidable manual P 20 49.617 50 -0.01 72
IV.MF5.EHZ. 2020-03-21T01:12:48.73 0.3 undecidable manual P 79 47.1195 50 0.57 63
IV.CESX.HHZ. 2020-03-21T01:12:47.12 0.3 undecidable manual P 216 41.5251 50 -0.18 70
IV.NRCA.HHZ. 2020-03-21T01:12:47.05 0.3 undecidable manual S 115 20.1687 118 -0.26 72
IV.FDMO.HHZ. 2020-03-21T01:12:47.11 0.3 undecidable manual S 49 21.3675 116 -0.57 66
IV.SNTG.HHZ. 2020-03-21T01:12:46.82 0.3 undecidable manual P 6 38.5281 50 -0.01 73
IT.FOPC.HGE. 2020-03-21T01:12:46.32 0.3 undecidable manual S 294 16.4724 123 0.1 75
IV.MMO1.EHZ. 2020-03-21T01:12:46.37 0.1 undecidable manual P 92 35.5422 50 -0.01 98
IV.ATCC.EHZ. 2020-03-21T01:12:46.38 0.1 undecidable manual P 327 36.6411 50 -0.16 95
IV.LNSS.HHZ. 2020-03-21T01:12:46.51 0.1 undecidable manual P 160 36.2415 50 0.03 97
IV.MOMA.HHZ. 2020-03-21T01:12:45.12 0.1 undecidable manual P 246 28.4493 50 -0.17 96
IV.CSP1.EHZ. 2020-03-21T01:12:45.93 0.3 positive manual P 52 32.6451 50 0.01 74
IT.MTCL.HGZ. 2020-03-21T01:12:45.07 0.3 undecidable manual S 44 12.876 129 -0.14 75
IV.FEMA.HNZ. 2020-03-21T01:12:45.65 0.3 undecidable manual S 66 14.2746 127 0.08 75
IV.CESI.HHZ. 2020-03-21T01:12:44.53 0.3 undecidable manual S 7 10.5783 135 -0.08 76
IV.MML1.HNE. 2020-03-21T01:12:44.49 0.1 undecidable manual P 16 23.5542 50 -0.04 100
IV.MC2.EHE. 2020-03-21T01:12:44.63 0.3 undecidable manual P 90 24.3534 50 -0.02 75
IV.FDMO.HHZ. 2020-03-21T01:12:44.08 1.0 undecidable manual P 49 21.3675 116 -0.1 25
IV.FEMA.HNZ. 2020-03-21T01:12:43.23 0.1 undecidable manual P 66 14.2746 127 0.26 97
IV.NRCA.HHZ. 2020-03-21T01:12:43.93 0.1 undecidable manual P 115 20.1687 118 -0.04 100
IT.FOPC.HGE. 2020-03-21T01:12:43.47 0.1 undecidable manual P 294 16.4724 123 0.13 99
IV.CESI.HHZ. 2020-03-21T01:12:42.62 0.1 undecidable manual P 7 10.5783 135 0.21 98
IT.MTCL.HGZ. 2020-03-21T01:12:42.93 0.1 undecidable manual P 44 12.876 129 0.17 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHN. ML:0.8 0.000030030000000000002 1.22 AML other m 2020-03-21T01:12:52.36
IV.CESI.HHE. ML:1.3 0.000235 0.5 AML other m 2020-03-21T01:12:45.02
IV.NRCA.HHN. ML:1.1 0.0000917 0.14 AML other m 2020-03-21T01:12:47.73
IV.FDMO.HHE. ML:1.2 0.0001025 0.26 AML other m 2020-03-21T01:12:47.60
IV.NRCA.HHE. ML:1.1 0.00009085 0.14 AML other m 2020-03-21T01:12:48.24
IV.FDMO.HHN. ML:0.9 0.000055 0.12 AML other m 2020-03-21T01:12:48.17
IV.MOMA.HHE. ML:0.8 0.00003115 1.14 AML other m 2020-03-21T01:12:49.41
IV.EL6.EHN. ML:1.3 0.0000485 1.44 AML other m 2020-03-21T01:12:56.91
IV.EL6.EHE. ML:1.3 0.000052199999999999995 0.82 AML other m 2020-03-21T01:12:56.77
IV.CESI.HNE. ML:1.1 0.000150613175 0.06 AML other m 2020-03-21T01:12:44.96
IV.CESI.HNN. ML:1.3 0.00021389039999999997 0.14 AML other m 2020-03-21T01:12:44.87
IV.NRCA.HNE. ML:1.2 0.0001087503 0.14 AML other m 2020-03-21T01:12:48.17
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