Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 26-07-2020 and time 03:41:09 (Italy) in region 2 km E Cerreto di Spoleto (PG)

A magnitude ML 0.8 earthquake occured in region: 2 km E Cerreto di Spoleto (PG), on

  • 26-07-2020 01:41:09 (UTC)
  • 26-07-2020 03:41:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8170, 12.9470 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.

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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 3 1075 1075
Sellano PG 8 1079 2154
Vallo di Nera PG 9 364 2518
Preci PG 10 724 3242
Poggiodomo PG 12 117 3359
Cascia PG 12 3217 6576
Norcia PG 12 4957 11533
Sant'Anatolia di Narco PG 13 564 12097
Campello sul Clitunno PG 14 2442 14539
Scheggino PG 15 461 15000
Visso MC 17 1107 16107
Trevi PG 18 8469 24576
Monteleone di Spoleto PG 18 599 25175
Castelsantangelo sul Nera MC 19 281 25456
Spoleto PG 19 38218 63674

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km SE of Foligno (57155 inhabitants)
38 Km NE of Terni (111501 inhabitants)
56 Km SE of Perugia (166134 inhabitants)
64 Km NW of L'Aquila (69753 inhabitants)
64 Km W of Teramo (54892 inhabitants)
82 Km NE of Viterbo (67173 inhabitants)
93 Km N of Guidonia Montecelio (88673 inhabitants)
96 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 2020-07-26
01:41:09		 42.8167 12.947 11 2020-07-26
01:49:43		 Sala Sismica INGV-Roma 81349301
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-26 01:41:09 ± 0.03
Latitude 42.8167 ± 0.0018
Longitude 12.9470 ± 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 81349301

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 233
Semi-minor axis of confidence ellipse (meter) 165
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 275
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) 115
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.08
Epicentral distance of station closest to the epicenter (degree) 0.12411
Epicentral distance of station farthest from the epicenter (degree) 0.43078
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 81349301
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-26 01:49:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2020-07-26T01:41:20.46 0.6 undecidable manual S 73 32.2455 50 -0.12 48
IV.FDMO.HHZ. 2020-07-26T01:41:19.21 0.6 undecidable manual S 25 26.9508 50 0.05 49
IV.ATCC.EHZ. 2020-07-26T01:41:18.39 1.0 positive manual P 329 47.8188 50 0.12 23
IV.CESI.HHZ. 2020-07-26T01:41:17.56 0.6 undecidable manual S 351 21.1677 117 -0.06 49
IV.ASSB.HHZ. 2020-07-26T01:41:16.07 0.6 undecidable manual P 317 34.3434 50 -0.11 48
IV.NRCA.HHZ. 2020-07-26T01:41:15.33 0.6 undecidable manual S 82 13.7751 128 -0.1 50
IV.MMO1.EHZ. 2020-07-26T01:41:15.98 0.6 undecidable manual P 73 32.2455 50 0.12 48
IV.FDMO.HHZ. 2020-07-26T01:41:15.01 0.6 positive manual P 25 26.9508 50 -0.03 49
IV.GAVE.EHZ. 2020-07-26T01:41:15.51 0.6 undecidable manual S 197 14.4744 126 -0.12 49
IV.ARRO.EHZ. 2020-07-26T01:41:15.44 1.0 negative manual P 209 30.2475 50 -0.11 24
IV.CESI.HHZ. 2020-07-26T01:41:14.17 0.1 undecidable manual P 351 21.1677 117 0.02 100
IV.GAVE.EHZ. 2020-07-26T01:41:13.09 0.1 positive manual P 197 14.4744 126 0.09 99
IV.NRCA.HHZ. 2020-07-26T01:41:12.95 0.1 negative manual P 82 13.7751 128 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:0.8 0.00006025 0.12 AML other m 2020-07-26T01:41:15.48
IV.GAVE.EHE. ML:0.9 0.0000691 1.52 AML other m 2020-07-26T01:41:15.84
IV.NRCA.HHN. ML:0.8 0.0000615 1.32 AML other m 2020-07-26T01:41:15.89
IV.GAVE.EHN. ML:1.0 0.00009295000000000001 1.68 AML other m 2020-07-26T01:41:15.12
IV.CESI.HHN. ML:0.8 0.00004305 0.64 AML other m 2020-07-26T01:41:18.29
IV.CESI.HHE. ML:0.6 0.000022599999999999997 0.44 AML other m 2020-07-26T01:41:18.84
IV.FDMO.HHE. ML:1.1 0.0000676 0.18 AML other m 2020-07-26T01:41:19.24
IV.FDMO.HHN. ML:0.9 0.000042 0.14 AML other m 2020-07-26T01:41:19.28
IV.ASSB.HHN. ML:0.6 0.00001715 0.6 AML other m 2020-07-26T01:41:23.08
IV.ASSB.HHE. ML:0.6 0.0000156 0.68 AML other m 2020-07-26T01:41:23.75
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