Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 28-03-2020 and time 11:28:17 (UTC) in region 6 km SE Cerreto di Spoleto (PG)

A magnitude ML 1.3 earthquake occured in region: 6 km SE Cerreto di Spoleto (PG), on

  • 28-03-2020 11:28:17 (UTC)
  • 28-03-2020 12:28:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7900, 12.9800 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Cerreto di Spoleto PG 6 1075 1075
Cascia PG 8 3217 4292
Poggiodomo PG 9 117 4409
Norcia PG 9 4957 9366
Vallo di Nera PG 10 364 9730
Preci PG 11 724 10454
Sellano PG 12 1079 11533
Sant'Anatolia di Narco PG 13 564 12097
Scheggino PG 15 461 12558
Monteleone di Spoleto PG 16 599 13157
Campello sul Clitunno PG 17 2442 15599
Visso MC 18 1107 16706
Castelsantangelo sul Nera MC 18 281 16987

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km SE of Foligno (57155 inhabitants)
37 Km NE of Terni (111501 inhabitants)
60 Km NW of L'Aquila (69753 inhabitants)
60 Km SE of Perugia (166134 inhabitants)
61 Km W of Teramo (54892 inhabitants)
83 Km NE of Viterbo (67173 inhabitants)
90 Km N of Guidonia Montecelio (88673 inhabitants)
93 Km N of Tivoli (56533 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
Bulletin
Rev1000 		ML 1.3 2020-03-28
11:28:17		 42.7898 12.9802 10 2020-07-18
21:08:29		 Bollettino Sismico Italiano INGV 77700971
Reviewed
Rev100 		ML 1.5 2020-03-28
11:28:16		 42.7863 12.9648 10 2020-03-28
11:32:41		 Sala Sismica INGV-Roma 77643551
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-28 11:28:17 ± 0.06
Latitude 42.7898 ± 0.0027
Longitude 12.9802 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 77700971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 294
Semi-minor axis of confidence ellipse (meter) 229
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 74
Circular confidence region, given by single value of horizontal uncertainty (meter) 290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.54679
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 11
Type of magnitude ML
Reference to an origin 77700971
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-03-30 13:26:29

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 77643551
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-28 11:32:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RIBO.EHZ.01 2020-03-28T11:29:06.06 3.0 undecidable manual S 3.07 0
IV.MAON.HHZ. 2020-03-28T11:29:02.76 3.0 undecidable manual S 0.23 0
IV.PE3.EHZ. 2020-03-28T11:28:37.77 3.0 positive manual P 1.39 0
IV.EL6.EHZ. 2020-03-28T11:28:36.66 0.3 undecidable manual S 9 60.6948 50 0.44 65
IV.ATCC.EHE. 2020-03-28T11:28:34.13 0.3 undecidable manual S 328 51.8037 50 0.27 68
IV.CESX.HHE. 2020-03-28T11:28:30.55 0.3 undecidable manual S 238 37.8288 50 0.42 68
IV.CSP1.EHZ. 2020-03-28T11:28:30.03 0.1 undecidable manual S 28 38.1285 50 -0.18 95
IV.MTRA.EHE. 2020-03-28T11:28:29.29 0.3 undecidable manual S 96 34.1436 50 0.16 72
IT.GNU.HGE. 2020-03-28T11:28:29.00 0.3 undecidable manual S 273 33.4443 50 0.05 74
IV.SMA1.EHZ. 2020-03-28T11:28:29.31 0.1 undecidable manual S 121 33.9438 50 0.23 95
IV.EL6.EHZ. 2020-03-28T11:28:28.22 0.3 undecidable manual P 9 60.6948 50 0.04 70
IV.FDMO.HHZ. 2020-03-28T11:28:27.36 0.1 undecidable manual S 18 28.749 50 -0.33 94
IV.MMO1.EHZ. 2020-03-28T11:28:27.90 0.1 undecidable manual S 67 30.747 50 -0.32 93
IV.ATCC.EHE. 2020-03-28T11:28:27.00 0.3 undecidable manual P 328 51.8037 50 0.18 70
IV.CESI.HHZ. 2020-03-28T11:28:26.13 0.1 undecidable manual S 346 24.6531 111 -0.24 96
IT.MTCL.HGZ. 2020-03-28T11:28:25.48 0.3 undecidable manual S 4 22.6551 113 -0.26 72
IV.MC2.EHZ. 2020-03-28T11:28:25.84 0.1 undecidable manual S 51 21.6672 114 0.43 93
IV.SMA1.EHZ. 2020-03-28T11:28:24.14 0.1 undecidable manual P 121 33.9438 50 0.08 98
IV.CESX.HHE. 2020-03-28T11:28:24.62 0.3 undecidable manual P 238 37.8288 50 -0.05 73
IV.CSP1.EHZ. 2020-03-28T11:28:24.58 0.1 undecidable manual P 28 38.1285 50 -0.14 96
IV.FEMA.HNZ. 2020-03-28T11:28:24.95 0.3 undecidable manual S 16 19.9689 115 0.09 75
IV.MTRA.EHE. 2020-03-28T11:28:24.19 0.3 undecidable manual P 96 34.1436 50 0.1 73
IV.LNSS.HHZ. 2020-03-28T11:28:24.93 0.1 undecidable manual S 167 21.2676 114 -0.36 94
IT.GNU.HGE. 2020-03-28T11:28:24.01 0.3 undecidable manual P 273 33.4443 50 0.03 74
IV.MMO1.EHZ. 2020-03-28T11:28:23.31 0.1 positive manual P 67 30.747 50 -0.26 95
IV.FDMO.HHZ. 2020-03-28T11:28:23.03 0.1 positive manual P 18 28.749 50 -0.23 96
IV.T1299.HNN. 2020-03-28T11:28:23.34 0.1 undecidable manual P 125 30.0477 50 -0.13 97
IT.MTCL.HGZ. 2020-03-28T11:28:22.08 0.3 undecidable manual P 4 22.6551 113 -0.05 75
IV.MC2.EHZ. 2020-03-28T11:28:22.13 0.1 undecidable manual P 51 21.6672 114 0.18 98
IV.NRCA.HHZ. 2020-03-28T11:28:22.64 0.1 undecidable manual S 66 11.9769 128 0.15 100
IV.CESI.HHZ. 2020-03-28T11:28:22.44 0.1 undecidable manual P 346 24.6531 111 -0.05 100
IV.LNSS.HHZ. 2020-03-28T11:28:21.74 0.1 undecidable manual P 167 21.2676 114 -0.14 99
IV.FEMA.HNZ. 2020-03-28T11:28:21.74 0.3 undecidable manual P 16 19.9689 115 0.11 75
IV.NRCA.HHZ. 2020-03-28T11:28:20.44 0.1 undecidable manual P 66 11.9769 128 0.18 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNE. ML:1.6 0.0005114499500000001 0.1088 AML other m 2020-03-28T11:28:22.85
IV.NRCA.HNN. ML:1.4 0.000319948 0.0704 AML other m 2020-03-28T11:28:22.81
IV.NRCA.HHN. ML:1.5 0.00035802965 0.0576 AML other m 2020-03-28T11:28:22.78
IV.NRCA.HHE. ML:1.6 0.0005472863 0.1024 AML other m 2020-03-28T11:28:22.85
IV.LNSS.HHE. ML:1.3 0.00013751035000000001 0.1344 AML other m 2020-03-28T11:28:25.10
IV.LNSS.HNE. ML:1.2 0.00012059372 0.1408 AML other m 2020-03-28T11:28:25.17
IV.LNSS.HHN. ML:1.1 0.00008092859499999999 0.096 AML other m 2020-03-28T11:28:25.12
IV.CESI.HHE. ML:0.7 0.000030002125 0.2176 AML other m 2020-03-28T11:28:26.41
IV.CESI.HHN. ML:0.9 0.0000492127 0.2816 AML other m 2020-03-28T11:28:26.41
IV.FDMO.HHN. ML:1.4 0.00012915475 0.2176 AML other m 2020-03-28T11:28:27.55
IV.FDMO.HHE. ML:1.4 0.000118081565 0.16 AML other m 2020-03-28T11:28:27.54
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