Earthquake with magnitude of ML 0.9 on date 19-08-2021 and time 02:13:19 (Italy) in region 3 km SW Cerreto di Spoleto (PG)

A magnitude ML 0.9 earthquake occured in region: 3 km SW Cerreto di Spoleto (PG), on

  • 19-08-2021 00:13:19 (UTC)
  • 19-08-2021 02:13:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7980, 12.9020 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.

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 3 1075 1075
Vallo di Nera PG 5 364 1439
Sant'Anatolia di Narco PG 9 564 2003
Poggiodomo PG 10 117 2120
Sellano PG 10 1079 3199
Campello sul Clitunno PG 11 2442 5641
Scheggino PG 11 461 6102
Cascia PG 13 3217 9319
Preci PG 14 724 10043
Spoleto PG 15 38218 48261
Trevi PG 15 8469 56730
Norcia PG 16 4957 61687
Monteleone di Spoleto PG 17 599 62286
Castel Ritaldi PG 19 3278 65564

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km SE of Foligno (57155 inhabitants)
34 Km NE of Terni (111501 inhabitants)
54 Km SE of Perugia (166134 inhabitants)
64 Km NW of L'Aquila (69753 inhabitants)
67 Km W of Teramo (54892 inhabitants)
78 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
Reviewed
Rev100
ML 0.9 2021-08-19
00:13:19
42.7983 12.9025 11 2021-08-19
00:21:15
Sala Sismica INGV-Roma 94352051
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-19 00:13:19 ± 0.04
Latitude 42.7983 ± 0.0018
Longitude 12.9025 ± 0.0037
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 94352051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 266
Semi-minor axis of confidence ellipse (meter) 192
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 125
Circular confidence region, given by single value of horizontal uncertainty (meter) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 119
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.36782
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 11
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 94352051
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-19 00:21:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LPEL.HHZ. 2021-08-19T00:14:01.12 3.0 undecidable manual S -2.06 0
IV.CPGN.EHZ. 2021-08-19T00:13:42.00 3.0 undecidable manual P 0 0
IV.ARVD.HHZ. 2021-08-19T00:13:35.14 3.0 undecidable manual P 0.25 0
IV.CSP1.EHZ. 2021-08-19T00:13:33.03 0.1 undecidable manual S 37 40.8258 50 0.17 92
IV.TERO.HHZ. 2021-08-19T00:13:32.67 3.0 undecidable manual P 0.44 0
IV.MML1.EHZ. 2021-08-19T00:13:31.51 1.0 undecidable manual S 9 35.4423 50 0.08 24
IV.MMO1.EHZ. 2021-08-19T00:13:31.52 0.3 undecidable manual S 72 36.2415 50 -0.14 70
IV.ASSB.HHZ. 2021-08-19T00:13:30.84 0.3 undecidable manual S 324 33.5442 50 -0.1 71
IV.ARRO.EHZ. 2021-08-19T00:13:29.02 0.3 undecidable manual S 205 26.751 50 -0.09 72
IV.FDMO.HHZ. 2021-08-19T00:13:29.96 0.1 undecidable manual S 30 30.3474 50 -0.13 95
IV.MC2.EHZ. 2021-08-19T00:13:29.34 0.1 undecidable manual S 62 26.4513 50 0.3 92
IV.LNSS.HHZ. 2021-08-19T00:13:28.34 0.3 undecidable manual S 153 24.4533 50 -0.15 71
IV.CESI.HHZ. 2021-08-19T00:13:28.06 0.3 undecidable manual S 0 22.9548 50 -0.04 73
IV.CSP1.EHZ. 2021-08-19T00:13:27.22 0.3 undecidable manual P 37 40.8258 50 0.02 71
IV.MMO1.EHZ. 2021-08-19T00:13:26.49 0.3 undecidable manual P 72 36.2415 50 -0.02 72
IV.MML1.EHZ. 2021-08-19T00:13:26.37 0.1 undecidable manual P 9 35.4423 50 0 96
IV.NRCA.HHZ. 2021-08-19T00:13:26.42 0.1 undecidable manual S 77 17.6712 122 -0.23 95
IV.ASSB.HHZ. 2021-08-19T00:13:26.02 0.1 undecidable manual P 324 33.5442 50 -0.07 95
IV.FDMO.HHZ. 2021-08-19T00:13:25.53 0.1 undecidable manual P 30 30.3474 50 -0.07 96
IV.MC2.EHZ. 2021-08-19T00:13:25.17 0.3 undecidable manual P 62 26.4513 50 0.18 71
IV.GAVE.EHZ. 2021-08-19T00:13:25.04 0.1 undecidable manual S 183 11.7771 133 0.02 100
IV.ARRO.EHZ. 2021-08-19T00:13:25.13 0.3 undecidable manual P 205 26.751 50 0.09 72
IV.CESI.HHZ. 2021-08-19T00:13:24.47 0.3 undecidable manual P 0 22.9548 50 0.02 74
IV.LNSS.HHZ. 2021-08-19T00:13:24.63 0.1 undecidable manual P 153 24.4533 50 -0.05 97
IV.NRCA.HHZ. 2021-08-19T00:13:23.63 0.1 undecidable manual P 77 17.6712 122 0.01 99
IV.GAVE.EHZ. 2021-08-19T00:13:22.88 0.1 undecidable manual P 183 11.7771 133 0.21 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHE. ML:1.1 0.000147 0.48 AML other m 2021-08-19T00:13:25.62
IV.GAVE.EHN. ML:1.2 0.0001575 0.84 AML other m 2021-08-19T00:13:25.60
IV.NRCA.HHE. ML:1.0 0.0000844 0.16 AML other m 2021-08-19T00:13:26.63
IV.CESI.HHN. ML:1.0 0.00006065 0.22 AML other m 2021-08-19T00:13:28.35
IV.CESI.HHE. ML:0.7 0.00003705 0.08 AML other m 2021-08-19T00:13:28.54
IV.LNSS.HHE. ML:0.9 0.0000453 0.14 AML other m 2021-08-19T00:13:28.70
IV.LNSS.HHN. ML:0.9 0.0000461 0.16 AML other m 2021-08-19T00:13:28.75
IV.FDMO.HHE. ML:0.7 0.000025149999999999998 1.18 AML other m 2021-08-19T00:13:30.38
IV.FDMO.HHN. ML:0.5 0.00001585 0.78 AML other m 2021-08-19T00:13:30.52
IV.NRCA.HHN. ML:1.0 0.00008315 0.14 AML other m 2021-08-19T00:13:34.54
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