Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 30-07-2020 and time 15:26:43 (UTC) in region 3 km E Cascia (PG)

A magnitude ML 1.2 earthquake occured in region: 3 km E Cascia (PG), on

  • 30-07-2020 15:26:43 (UTC)
  • 30-07-2020 17:26:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7290, 13.0460 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
Cascia PG 3 3217 3217
Norcia PG 8 4957 8174
Poggiodomo PG 9 117 8291
Monteleone di Spoleto PG 11 599 8890
Cerreto di Spoleto PG 15 1075 9965
Cittareale RI 15 482 10447
Vallo di Nera PG 16 364 10811
Preci PG 17 724 11535
Accumoli RI 17 667 12202
Sant'Anatolia di Narco PG 17 564 12766
Scheggino PG 18 461 13227
Leonessa RI 20 2435 15662

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km NE of Terni (111501 inhabitants)
38 Km SE of Foligno (57155 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
54 Km W of Teramo (54892 inhabitants)
68 Km SE of Perugia (166134 inhabitants)
84 Km E of Viterbo (67173 inhabitants)
85 Km NE of Guidonia Montecelio (88673 inhabitants)
87 Km N of Tivoli (56533 inhabitants)
93 Km W of Montesilvano (53738 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 1.2 2020-07-30
15:26:43		 42.7288 13.0458 11 2020-07-30
15:35:19		 Sala Sismica INGV-Roma 81490031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-30 15:26:43 ± 0.05
Latitude 42.7288 ± 0.0027
Longitude 13.0458 ± 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 81490031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 428
Semi-minor axis of confidence ellipse (meter) 191
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 297
Circular confidence region, given by single value of horizontal uncertainty (meter) 430.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.38131
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.4
Num. used stations 20
Type of magnitude ML
Reference to an origin 81490031
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-30 15:35:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSNT.HHZ. 2020-07-30T15:27:33.29 3.0 undecidable manual S 2.93 0
IV.MCIV.CHZ. 2020-07-30T15:27:03.52 3.0 negative manual P 0.33 0
IV.CSP1.EHZ. 2020-07-30T15:26:57.47 0.6 undecidable manual S 18 42.3243 50 0.38 45
IV.MOMA.HHZ. 2020-07-30T15:26:56.64 0.6 undecidable manual S 282 39.627 50 0.27 46
IV.FDMO.HHZ. 2020-07-30T15:26:54.73 0.6 undecidable manual S 6 34.3434 50 -0.22 47
IV.RM33.EHZ. 2020-07-30T15:26:53.20 0.3 undecidable manual S 150 28.0497 50 -0.07 73
IV.MMO1.EHZ. 2020-07-30T15:26:53.76 0.3 undecidable manual S 50 29.6481 50 0.05 73
IV.MC2.EHZ. 2020-07-30T15:26:52.07 0.3 undecidable manual S 30 23.3544 50 0.04 74
IV.TERO.HHZ. 2020-07-30T15:26:52.57 3.0 undecidable manual Pn 0.19 0
IV.ARRO.EHZ. 2020-07-30T15:26:52.99 0.6 undecidable manual S 234 28.2495 50 -0.35 46
IV.MOMA.HHZ. 2020-07-30T15:26:51.20 0.3 undecidable manual P 282 39.627 50 0.38 67
IV.CSP1.EHZ. 2020-07-30T15:26:51.22 0.3 undecidable manual P 18 42.3243 50 -0.01 72
IV.RM33.EHZ. 2020-07-30T15:26:49.06 0.1 undecidable manual P 150 28.0497 50 0.03 98
IV.MMO1.EHZ. 2020-07-30T15:26:49.34 0.1 undecidable manual P 50 29.6481 50 0.06 98
IV.FDMO.HHZ. 2020-07-30T15:26:49.61 0.1 undecidable manual P 6 34.3434 50 -0.38 90
IV.LNSS.HHZ. 2020-07-30T15:26:49.29 0.3 undecidable manual S 182 13.9749 127 -0.01 76
IV.NRCA.HHZ. 2020-07-30T15:26:48.84 0.1 undecidable manual S 26 12.876 129 -0.16 98
IV.MC2.EHZ. 2020-07-30T15:26:48.37 0.6 undecidable manual P 30 23.3544 50 0.06 49
IV.GAVE.EHZ. 2020-07-30T15:26:48.94 0.3 undecidable manual S 252 12.9759 129 -0.09 75
IV.ARRO.EHZ. 2020-07-30T15:26:48.88 0.1 undecidable manual P 234 28.2495 50 -0.18 95
IV.GAVE.EHZ. 2020-07-30T15:26:46.66 0.1 positive manual P 252 12.9759 129 0.08 100
IV.LNSS.HHZ. 2020-07-30T15:26:46.91 0.1 positive manual P 182 13.9749 127 0.18 98
IV.NRCA.HHZ. 2020-07-30T15:26:46.65 0.1 positive manual P 26 12.876 129 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.5 0.0003095 0.12 AML other m 2020-07-30T15:26:48.92
IV.GAVE.EHN. ML:1.6 0.0004285 0.26 AML other m 2020-07-30T15:26:49.18
IV.NRCA.HHE. ML:1.8 0.000682 1.84 AML other m 2020-07-30T15:26:49.07
IV.GAVE.EHE. ML:1.7 0.000496 0.14 AML other m 2020-07-30T15:26:49.25
IV.LNSS.HHN. ML:1.8 0.0005565 0.14 AML other m 2020-07-30T15:26:49.65
IV.LNSS.HHE. ML:1.8 0.0006799999999999999 0.14 AML other m 2020-07-30T15:26:49.61
IV.RM33.EHN. ML:0.9 0.0000453 0.12 AML other m 2020-07-30T15:26:54.10
IV.ARRO.EHE. ML:0.9 0.0000426 0.12 AML other m 2020-07-30T15:26:54.16
IV.RM33.EHE. ML:1.0 0.0000493 0.98 AML other m 2020-07-30T15:26:54.38
IV.FDMO.HHE. ML:0.9 0.0000334 0.16 AML other m 2020-07-30T15:26:56.04
IV.FDMO.HHN. ML:0.8 0.00002675 0.6 AML other m 2020-07-30T15:26:56.47
IV.ARRO.EHN. ML:0.9 0.00003990000000000001 0.7 AML other m 2020-07-30T15:26:56.74
IV.MOMA.HHN. ML:0.0 0.0000352 0.58 AML other m 2020-07-30T15:26:57.17
IV.MOMA.HHE. ML:0.0 0.0000406 0.96 AML other m 2020-07-30T15:26:57.81
IV.TERO.HHE. ML:0.7 0.0000166 0.4 AML other m 2020-07-30T15:26:59.47
IV.TERO.HHN. ML:0.8 0.00001965 0.46 AML other m 2020-07-30T15:26:59.43
IV.NRCA.HNE. ML:1.8 0.0006252185 0.1408 AML other m 2020-07-30T15:26:49.07
IV.NRCA.HNN. ML:1.4 0.00027051345 1.28 AML other m 2020-07-30T15:26:49.62
IV.GAVE.HNE. ML:1.7 0.00051911935 0.7296 AML other m 2020-07-30T15:26:49.31
IV.GAVE.HNN. ML:1.3 0.00021639720000000002 0.9472 AML other m 2020-07-30T15:26:49.57
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