Earthquake with magnitude of ML 0.8 on date 18-10-2020 and time 12:57:51 (Italy) in region 5 km NW Cerreto di Spoleto (PG)

A magnitude ML 0.8 earthquake occured in region: 5 km NW Cerreto di Spoleto (PG), on

  • 18-10-2020 10:57:51 (UTC)
  • 18-10-2020 12:57:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8560, 12.8910 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 5 1075 1075
Sellano PG 5 1079 2154
Vallo di Nera PG 10 364 2518
Campello sul Clitunno PG 10 2442 4960
Trevi PG 12 8469 13429
Preci PG 12 724 14153
Sant'Anatolia di Narco PG 14 564 14717
Poggiodomo PG 16 117 14834
Scheggino PG 17 461 15295
Monte Cavallo MC 18 145 15440
Norcia PG 18 4957 20397
Castel Ritaldi PG 18 3278 23675
Visso MC 18 1107 24782
Cascia PG 18 3217 27999
Spoleto PG 18 38218 66217
Foligno PG 19 57155 123372
Montefalco PG 20 5679 129051

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km SE of Foligno (57155 inhabitants)
38 Km NE of Terni (111501 inhabitants)
50 Km SE of Perugia (166134 inhabitants)
70 Km NW of L'Aquila (69753 inhabitants)
70 Km W of Teramo (54892 inhabitants)
81 Km NE of Viterbo (67173 inhabitants)
96 Km N of Guidonia Montecelio (88673 inhabitants)
99 Km SW of Ancona (100861 inhabitants)
99 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 0.8 2020-10-18
10:57:51
42.8562 12.8912 11 2020-10-18
11:03:56
Sala Sismica INGV-Roma 83881671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-18 10:57:51 ± 0.05
Latitude 42.8562 ± 0.0027
Longitude 12.8912 ± 0.0049
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 83881671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 375
Semi-minor axis of confidence ellipse (meter) 310
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 115
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 81
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.37682
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 83881671
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-18 11:03:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2020-10-18T10:58:09.29 3.0 undecidable manual S -0.59 0
IV.ATCC.EHZ. 2020-10-18T10:58:05.22 0.3 undecidable manual S 331 41.8248 50 0.42 66
IV.CSP1.EHZ. 2020-10-18T10:58:03.63 0.6 undecidable manual S 44 36.5412 50 0.25 46
IV.TERO.HHZ. 2020-10-18T10:58:02.16 3.0 negative manual P -0.64 0
IV.MML1.HNZ. 2020-10-18T10:58:01.33 0.6 undecidable manual S 13 29.2485 50 -0.13 48
IV.FDMO.HHZ. 2020-10-18T10:58:00.45 0.6 undecidable manual S 38 25.5522 50 -0.02 49
IV.ASSB.HHZ. 2020-10-18T10:58:00.90 0.3 undecidable manual S 318 28.0497 50 -0.22 71
IV.MOMA.HHZ. 2020-10-18T10:58:00.92 0.3 undecidable manual S 258 26.751 50 0.14 72
IV.ATCC.EHZ. 2020-10-18T10:57:58.90 0.1 undecidable manual P 331 41.8248 50 -0.09 94
IV.CSP1.EHZ. 2020-10-18T10:57:58.32 0.6 negative manual P 44 36.5412 50 0.14 47
IV.GAVE.EHZ. 2020-10-18T10:57:58.10 0.6 undecidable manual S 179 18.1707 120 -0.25 48
IV.NRCA.HHZ. 2020-10-18T10:57:58.40 0.1 undecidable manual S 98 18.2706 120 0 100
IT.MTCL.HGZ. 2020-10-18T10:57:58.08 0.3 undecidable manual S 30 17.6712 121 -0.12 73
IV.CESI.HHZ. 2020-10-18T10:57:57.93 0.3 undecidable manual S 4 16.5723 123 0.06 74
IV.MML1.HNZ. 2020-10-18T10:57:56.77 0.1 undecidable manual P 13 29.2485 50 -0.29 92
IV.MOMA.HHZ. 2020-10-18T10:57:56.84 0.1 undecidable manual P 258 26.751 50 0.17 95
IV.FDMO.HHZ. 2020-10-18T10:57:56.51 1.0 undecidable manual P 38 25.5522 50 0.02 25
IV.ASSB.HHZ. 2020-10-18T10:57:56.56 0.1 undecidable manual P 318 28.0497 50 -0.31 92
IV.GAVE.EHZ. 2020-10-18T10:57:55.32 0.1 positive manual P 179 18.1707 120 0.05 99
IV.NRCA.HHZ. 2020-10-18T10:57:55.36 0.1 negative manual P 98 18.2706 120 0.06 99
IT.MTCL.HGZ. 2020-10-18T10:57:55.27 0.1 undecidable manual P 30 17.6712 121 0.09 98
IV.CESI.HHZ. 2020-10-18T10:57:55.12 0.1 undecidable manual P 4 16.5723 123 0.13 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:1.2 0.0001555 0.14 AML other m 2020-10-18T10:57:58.10
IV.CESI.HHE. ML:1.0 0.00009335 0.08 AML other m 2020-10-18T10:57:58.29
IV.NRCA.HHE. ML:0.8 0.000051949999999999996 0.8 AML other m 2020-10-18T10:57:58.54
IV.NRCA.HHN. ML:0.8 0.00004685 0.68 AML other m 2020-10-18T10:57:58.53
IV.MOMA.HHE. ML:0.7 0.00003025 0.18 AML other m 2020-10-18T10:58:01.35
IV.ASSB.HHE. ML:0.6 0.000019900000000000003 0.92 AML other m 2020-10-18T10:58:01.36
IV.ASSB.HHN. ML:0.7 0.00002705 1.58 AML other m 2020-10-18T10:58:01.19
IV.MOMA.HHN. ML:0.6 0.000019050000000000002 1.44 AML other m 2020-10-18T10:58:02.85
IV.CSP1.EHE. ML:1.2 0.0000663 0.48 AML other m 2020-10-18T10:58:04.36
IV.CSP1.EHN. ML:1.2 0.0000553 1.4 AML other m 2020-10-18T10:58:04.97
IV.GAVE.EHE. ML:1.0 0.00007419655 0.1408 AML other m 2020-10-18T10:57:58.80
IV.GAVE.EHN. ML:0.9 0.00006704312 0.1216 AML other m 2020-10-18T10:57:58.91
IV.ATCC.EHE. ML:0.7 0.00001452724 0.2752 AML other m 2020-10-18T10:58:06.75
IV.ATCC.EHN. ML:0.5 0.000011209495 0.1152 AML other m 2020-10-18T10:58:06.29
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