Earthquake with magnitude of ML 1.5 on date 30-08-2018 and time 09:16:18 (Italy) in region 5 km SE Castel Ritaldi (PG)

A magnitude ML 1.5 earthquake occured in region: 5 km SE Castel Ritaldi (PG), on

  • 30-08-2018 07:16:18 (UTC)
  • 30-08-2018 09:16:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.79, 12.72 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Castel Ritaldi PG 5 3278 3278
Campello sul Clitunno PG 6 2442 5720
Spoleto PG 7 38218 43938
Trevi PG 10 8469 52407
Sant'Anatolia di Narco PG 12 564 52971
Giano dell'Umbria PG 12 3846 56817
Vallo di Nera PG 12 364 57181
Montefalco PG 13 5679 62860
Scheggino PG 13 461 63321
Massa Martana PG 16 3770 67091
Cerreto di Spoleto PG 17 1075 68166
Acquasparta TR 18 4778 72944
Bevagna PG 18 5081 78025
Foligno PG 18 57155 135180
Gualdo Cattaneo PG 19 6155 141335
Ferentillo TR 20 1913 143248

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km S of Foligno (57155 inhabitants)
26 Km N of Terni (111501 inhabitants)
44 Km SE of Perugia (166134 inhabitants)
65 Km NE of Viterbo (67173 inhabitants)
74 Km NW of L'Aquila (69753 inhabitants)
82 Km W of Teramo (54892 inhabitants)
88 Km N of Guidonia Montecelio (88673 inhabitants)
92 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
Rev 1000 ML 1.5 2018-08-30
07:16:18
42.79 12.71 10 2019-04-24
14:51:19
Bollettino Sismico Italiano INGV 67840461
Rev 100 ML 1.6 2018-08-30
07:16:18
42.79 12.72 10 2018-08-30
07:23:33
Sala Sismica INGV-Roma 60371351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-08-30 07:16:18 ± 0.11
Latitude 42.79 ± 0.01
Longitude 12.71 ± 0.01
Depth (km) 10 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 67840461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1379
Semi-minor axis of confidence ellipse (meter) 551
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 219
Circular confidence region, given by single value of horizontal uncertainty (meter) 1380
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 181
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
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) 0.21494
Epicentral distance of station farthest from the epicenter (degree) 0.60165
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 67840461
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-04-22 00:39:10

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 60371351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-08-30 07:23:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MC2.EHZ. 2018-08-30T07:16:32.28 0.3 undecidable manual S 71 0.3678 50 0.56 64
IV.FDMO.HHZ. 2018-08-30T07:16:31.75 0.3 undecidable manual S 48 0.3669 50 0.07 72
IV.NRCA.HHZ. 2018-08-30T07:16:29.36 0.1 undecidable manual S 82 0.2959 50 -0.23 94
IV.FIAM.HHZ. 2018-08-30T07:16:29.98 1.0 undecidable manual P 150 0.6016 50 0.01 23
IV.CESI.HHZ. 2018-08-30T07:16:28.31 0.1 undecidable manual S 33 0.2545 50 -0.06 98
IV.ASSB.HHZ. 2018-08-30T07:16:28.40 0.3 undecidable manual S 351 0.2545 50 0.04 74
IV.ARRO.EHZ. 2018-08-30T07:16:27.13 0.1 undecidable manual S 170 0.2149 113 0.02 100
IV.MMO1.EHZ. 2018-08-30T07:16:27.48 0.6 undecidable manual P 76 0.4614 50 -0.09 47
IV.MC2.EHZ. 2018-08-30T07:16:26.00 0.1 negative manual P 71 0.3678 50 0.03 97
IV.FDMO.HHZ. 2018-08-30T07:16:25.88 0.1 negative manual P 48 0.3669 50 -0.07 96
IV.ASSB.HHZ. 2018-08-30T07:16:24.07 0.3 undecidable manual P 351 0.2545 50 0.04 74
IV.NRCA.HHZ. 2018-08-30T07:16:24.59 0.1 negative manual P 82 0.2959 50 -0.15 96
IV.CESI.HHZ. 2018-08-30T07:16:23.99 0.1 positive manual P 33 0.2545 50 -0.05 99
IV.ARRO.EHZ. 2018-08-30T07:16:23.37 0.1 negative manual P 170 0.2149 113 0.05 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OB.GAVE.EHE. ML:0 0.000636 0.16 AML other m 2018-08-30T07:16:25.90
OB.GAVE.EHN. ML:0 0.0005025 1.88 AML other m 2018-08-30T07:16:25.96
IV.ARRO.EHN. ML:1.4 0.0001475 0.68 AML other m 2018-08-30T07:16:27.39
IV.CESI.HHN. ML:1.6 0.000223 0.34 AML other m 2018-08-30T07:16:28.70
IV.ASSB.HHE. ML:1.6 0.000191 0.22 AML other m 2018-08-30T07:16:28.81
IV.ARRO.EHE. ML:1.3 0.000137 0.54 AML other m 2018-08-30T07:16:29.32
IV.ASSB.HHN. ML:1.5 0.0001595 0.86 AML other m 2018-08-30T07:16:29.81
IV.NRCA.HHE. ML:2.1 0.0005345 0.16 AML other m 2018-08-30T07:16:29.62
IV.CESI.HHE. ML:1.4 0.0001385 0.6 AML other m 2018-08-30T07:16:30.15
IV.NRCA.HHN. ML:1.8 0.0002545 1.4 AML other m 2018-08-30T07:16:30.23
IV.FDMO.HHE. ML:1.7 0.000182 0.2 AML other m 2018-08-30T07:16:32.31
IV.FDMO.HHN. ML:1.6 0.0001175 0.6 AML other m 2018-08-30T07:16:32.65
IV.RM33.EHN. ML:0 8.835E-5 0.5 AML other m 2018-08-30T07:16:35.65
IV.RM33.EHE. ML:0 0.0001012 0.16 AML other m 2018-08-30T07:16:36.40
IV.FIAM.HHN. ML:1.3 3.395E-5 0.92 AML other m 2018-08-30T07:16:42.25
IV.FIAM.HHE. ML:1.2 3.24E-5 1.52 AML other m 2018-08-30T07:16:48.91
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download