Earthquake with magnitude of ML 1.1 on date 28-08-2018 and time 06:13:43 (Italy) in region 6 km SE Castel Ritaldi (PG)

A magnitude ML 1.1 earthquake occured in region: 6 km SE Castel Ritaldi (PG), on

  • 28-08-2018 04:13:43 (UTC)
  • 28-08-2018 06:13:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.79, 12.72 at 9 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
Castel Ritaldi PG 6 3278 3278
Spoleto PG 6 38218 41496
Campello sul Clitunno PG 6 2442 43938
Trevi PG 11 8469 52407
Sant'Anatolia di Narco PG 11 564 52971
Vallo di Nera PG 12 364 53335
Scheggino PG 12 461 53796
Giano dell'Umbria PG 13 3846 57642
Montefalco PG 13 5679 63321
Massa Martana PG 16 3770 67091
Cerreto di Spoleto PG 17 1075 68166
Acquasparta TR 18 4778 72944
Bevagna PG 19 5081 78025
Ferentillo TR 19 1913 79938
Foligno PG 19 57155 137093
Gualdo Cattaneo PG 19 6155 143248
Poggiodomo PG 19 117 143365

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km S of Foligno (57155 inhabitants)
26 Km N of Terni (111501 inhabitants)
45 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)
87 Km N of Guidonia Montecelio (88673 inhabitants)
92 Km N of Tivoli (56533 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.1 2018-08-28
04:13:43
42.79 12.72 9 2018-08-28
04:19:10
Sala Sismica INGV-Roma 60277931
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-08-28 04:13:43 ± 0.11
Latitude 42.79 ± 0.01
Longitude 12.72 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 60277931

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1037
Semi-minor axis of confidence ellipse (meter) 590
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 204
Circular confidence region, given by single value of horizontal uncertainty (meter) 1040
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 179
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.36782
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 60277931
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-08-28 04:19:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
MN.CUC.HHZ. 2018-08-28T04:15:18.15 3.0 undecidable manual Sn 3.07 0
CR.STON.BHZ. 2018-08-28T04:15:17.54 3.0 undecidable manual Sn -4.83 0
IV.ZONE.HHZ. 2018-08-28T04:15:17.54 3.0 undecidable manual Sg 6.58 0
IV.MILN.HNZ. 2018-08-28T04:15:13.91 3.0 undecidable manual Sn 0.69 0
MN.TRI.HHZ. 2018-08-28T04:15:11.66 3.0 undecidable manual Sg 6.25 0
IV.GRI.EHZ. 2018-08-28T04:14:52.01 3.0 undecidable manual Pn 3.89 0
IV.IMTC.HHZ. 2018-08-28T04:14:44.55 3.0 undecidable manual Sn 5.57 0
IV.CAR1.HHZ. 2018-08-28T04:14:43.55 3.0 undecidable manual Pn 1.37 0
YD.T1411.EHZ. 2018-08-28T04:14:40.43 3.0 undecidable manual Sg 4.71 0
GU.GSCL.HHZ. 2018-08-28T04:14:33.66 3.0 undecidable manual Sn -4.07 0
IV.PTRJ.HHZ. 2018-08-28T04:14:33.49 3.0 undecidable manual Sn -2.32 0
IV.CRE.HHZ. 2018-08-28T04:14:07.18 3.0 undecidable manual Sn -5.85 0
IV.VCEL.EHZ. 2018-08-28T04:14:07.93 3.0 undecidable manual Sn -7.39 0
GU.GSCL.HHZ. 2018-08-28T04:14:05.78 3.0 undecidable manual Pn -5.19 0
IV.NARO.HHZ. 2018-08-28T04:14:02.54 3.0 undecidable manual Sn -9.99 0
IV.CSP1.EHZ. 2018-08-28T04:14:00.91 3.0 undecidable manual Sn -7.88 0
IV.FDMO.HHZ. 2018-08-28T04:13:57.35 0.6 undecidable manual S 47 0.3678 50 0.4 45
IV.VCEL.EHZ. 2018-08-28T04:13:55.30 3.0 positive manual P -3.08 0
IV.NRCA.HHZ. 2018-08-28T04:13:54.59 0.3 undecidable manual S 80 0.2923 50 -0.14 73
IV.ASSB.HHZ. 2018-08-28T04:13:53.72 0.3 undecidable manual S 350 0.2608 108 -0.04 75
IV.CESI.HHZ. 2018-08-28T04:13:53.95 0.6 undecidable manual S 32 0.2572 108 0.32 47
IV.NARO.HHZ. 2018-08-28T04:13:52.36 3.0 undecidable manual Pn -4.63 0
IV.MMO1.EHZ. 2018-08-28T04:13:52.57 3.0 positive manual Pg -1.96 0
IV.ARRO.EHZ. 2018-08-28T04:13:52.12 0.6 undecidable manual S 171 0.2086 112 0.24 48
IV.FDMO.HHZ. 2018-08-28T04:13:51.20 1.0 positive manual P 47 0.3678 50 0.06 24
IV.CESI.HHZ. 2018-08-28T04:13:49.27 0.1 undecidable manual P 32 0.2572 108 0.04 100
OB.GAVE.EHZ. 2018-08-28T04:13:49.99 0.6 undecidable manual S 126 0.1583 118 -0.11 50
IV.ASSB.HHZ. 2018-08-28T04:13:49.23 0.1 undecidable manual P 350 0.2608 108 -0.07 100
IV.NRCA.HHZ. 2018-08-28T04:13:49.65 0.3 negative manual P 80 0.2923 50 -0.21 72
IV.ARRO.EHZ. 2018-08-28T04:13:48.31 1.0 undecidable manual P 171 0.2086 112 0.09 25
OB.GAVE.EHZ. 2018-08-28T04:13:47.09 1.0 positive manual P 126 0.1583 118 -0.1 25
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OB.GAVE.EHE. ML:1.2 0.0001455 0.26 AML other m 2018-08-28T04:13:50.29
OB.GAVE.EHN. ML:1.2 0.000142 0.46 AML other m 2018-08-28T04:13:51.48
IV.ARRO.EHN. ML:0.8 3.94E-5 0.26 AML other m 2018-08-28T04:13:53.82
IV.CESI.HHN. ML:1 5.1E-5 1.5 AML other m 2018-08-28T04:13:54.89
IV.ASSB.HHE. ML:0.8 3.73E-5 0.42 AML other m 2018-08-28T04:13:54.72
IV.ARRO.EHE. ML:0.8 3.925E-5 0.22 AML other m 2018-08-28T04:13:55.97
IV.ASSB.HHN. ML:0.9 3.88E-5 1.24 AML other m 2018-08-28T04:13:56.67
IV.CESI.HHE. ML:0.9 4.0E-5 0.52 AML other m 2018-08-28T04:13:57.83
IV.VCEL.EHE. ML:2.4 0.0002295 0.66 AML other m 2018-08-28T04:14:09.93
IV.VCEL.EHN. ML:2.5 0.00029 0.3 AML other m 2018-08-28T04:14:09.56
IV.NARO.HHN. ML:1.6 4.285E-5 1.42 AML other m 2018-08-28T04:14:20.16
IV.NRCA.HHE. ML:1.2 7.585E-5 0.18 AML other m 2018-08-28T04:14:26.87
IV.NRCA.HHN. ML:1.2 7.35E-5 0.16 AML other m 2018-08-28T04:14:26.78
IV.NARO.HHE. ML:1.6 3.94E-5 1.48 AML other m 2018-08-28T04:14:38.24
IV.ZONE.HHN. ML:3.2 9.595E-5 0.06 AML other m 2018-08-28T04:15:32.28
IV.ZONE.HHE. ML:3.2 8.935E-5 0.08 AML other m 2018-08-28T04:15:32.28
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