Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 26-07-2020 and time 01:59:14 (UTC) in region 2 km E Cerreto di Spoleto (PG)

A magnitude ML 1.0 earthquake occured in region: 2 km E Cerreto di Spoleto (PG), on

  • 26-07-2020 01:59:14 (UTC)
  • 26-07-2020 03:59:14 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8150, 12.9460 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 2 1075 1075
Sellano PG 8 1079 2154
Vallo di Nera PG 8 364 2518
Preci PG 11 724 3242
Poggiodomo PG 11 117 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
Spoleto PG 19 38218 63393
Castelsantangelo sul Nera MC 19 281 63674

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km SE of Foligno (57155 inhabitants)
37 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)
92 Km N of Guidonia Montecelio (88673 inhabitants)
95 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 1.0 2020-07-26
01:59:14		 42.8152 12.9462 11 2020-07-26
02:05:09		 Sala Sismica INGV-Roma 81349771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-26 01:59:14 ± 0.03
Latitude 42.8152 ± 0.0018
Longitude 12.9462 ± 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 81349771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 243
Semi-minor axis of confidence ellipse (meter) 175
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 120
Circular confidence region, given by single value of horizontal uncertainty (meter) 240.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
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) 0.43257
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 81349771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-26 02:05:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MOMA.HHZ. 2020-07-26T01:59:25.55 0.6 undecidable manual S 268 30.6471 50 0.17 47
IV.FDMO.HHZ. 2020-07-26T01:59:24.52 0.6 undecidable manual S 25 27.0507 50 0.08 49
IV.LNSS.HHZ. 2020-07-26T01:59:23.89 0.6 undecidable manual S 162 24.753 50 0.07 49
IV.ATCC.EHZ. 2020-07-26T01:59:23.61 1.0 negative manual P 329 48.0186 50 0.08 23
IV.RM33.EHZ. 2020-07-26T01:59:22.41 1.0 undecidable manual P 147 40.4262 50 0.05 24
IV.CESI.HHZ. 2020-07-26T01:59:22.87 0.6 undecidable manual S 351 21.3675 50 -0.03 50
IV.ASSB.HHZ. 2020-07-26T01:59:21.28 1.0 undecidable manual P 317 34.3434 50 -0.16 24
IV.NRCA.HHZ. 2020-07-26T01:59:20.64 0.6 undecidable manual S 81 13.7751 128 -0.11 49
IV.GAVE.EHZ. 2020-07-26T01:59:20.79 0.6 undecidable manual S 197 14.2746 127 -0.09 50
IV.MOMA.HHZ. 2020-07-26T01:59:20.70 0.1 undecidable manual P 268 30.6471 50 -0.16 95
IV.FDMO.HHZ. 2020-07-26T01:59:20.30 0.3 positive manual P 25 27.0507 50 -0.01 74
IV.ARRO.EHZ. 2020-07-26T01:59:20.74 1.0 negative manual P 209 30.0477 50 -0.03 24
IV.LNSS.HHZ. 2020-07-26T01:59:19.87 0.1 negative manual P 162 24.753 50 -0.08 98
IV.CESI.HHZ. 2020-07-26T01:59:19.45 0.1 undecidable manual P 351 21.3675 50 0.03 99
IV.NRCA.HHZ. 2020-07-26T01:59:18.24 0.1 negative manual P 81 13.7751 128 0.06 100
IV.GAVE.EHZ. 2020-07-26T01:59:18.39 0.1 positive manual P 197 14.2746 127 0.13 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:0.9 0.00008060000000000001 0.12 AML other m 2020-07-26T01:59:20.72
IV.NRCA.HHN. ML:0.9 0.00007585 0.14 AML other m 2020-07-26T01:59:21.14
IV.GAVE.EHE. ML:1.1 0.00011899999999999999 0.12 AML other m 2020-07-26T01:59:21.14
IV.GAVE.EHN. ML:1.1 0.00011949999999999999 0.32 AML other m 2020-07-26T01:59:21.42
IV.FDMO.HHN. ML:0.9 0.0000421 0.16 AML other m 2020-07-26T01:59:24.57
IV.FDMO.HHE. ML:1.2 0.0000745 0.74 AML other m 2020-07-26T01:59:24.54
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