Earthquake with magnitude of ML 1.3 on date 30-09-2018 and time 02:35:28 (Italy) in region 4 km SE Castel Ritaldi (PG)

A magnitude ML 1.3 earthquake occured in region: 4 km SE Castel Ritaldi (PG), on

  • 30-09-2018 00:35:28 (UTC)
  • 30-09-2018 02:35:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8, 12.71 at 10 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 4 3278 3278
Campello sul Clitunno PG 6 2442 5720
Spoleto PG 7 38218 43938
Trevi PG 9 8469 52407
Giano dell'Umbria PG 12 3846 56253
Montefalco PG 12 5679 61932
Sant'Anatolia di Narco PG 13 564 62496
Vallo di Nera PG 13 364 62860
Scheggino PG 14 461 63321
Massa Martana PG 16 3770 67091
Cerreto di Spoleto PG 17 1075 68166
Bevagna PG 17 5081 73247
Foligno PG 18 57155 130402
Gualdo Cattaneo PG 18 6155 136557
Acquasparta TR 18 4778 141335

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km S of Foligno (57155 inhabitants)
27 Km N of Terni (111501 inhabitants)
43 Km SE of Perugia (166134 inhabitants)
65 Km NE of Viterbo (67173 inhabitants)
75 Km NW of L'Aquila (69753 inhabitants)
83 Km W of Teramo (54892 inhabitants)
89 Km N of Guidonia Montecelio (88673 inhabitants)
93 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 100 ML 1.3 2018-09-30
00:35:28
42.8 12.71 11 2018-09-30
08:14:03
Sala Sismica INGV-Roma 61469511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-09-30 00:35:28 ± 0.1
Latitude 42.80 ± 0.00
Longitude 12.71 ± 0.01
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 61469511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 624
Semi-minor axis of confidence ellipse (meter) 501
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 274
Circular confidence region, given by single value of horizontal uncertainty (meter) 620
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.10432
Epicentral distance of station farthest from the epicenter (degree) 0.60165
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 61469511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-09-30 08:14:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2018-09-30T00:35:49.69 0.6 undecidable manual S 28 0.6016 50 0.67 39
IV.RM33.EHZ. 2018-09-30T00:35:45.49 0.3 undecidable manual S 128 0.4694 50 0.39 66
IV.MC2.EHZ. 2018-09-30T00:35:42.90 0.3 undecidable manual S 72 0.3669 50 0.83 57
IV.EL6.EHZ. 2018-09-30T00:35:40.47 0.1 undecidable manual P 28 0.6016 50 0.08 91
IV.NRCA.HHZ. 2018-09-30T00:35:39.79 0.3 undecidable manual S 83 0.2968 50 -0.2 71
IV.ASSB.HHZ. 2018-09-30T00:35:38.48 0.3 undecidable manual S 351 0.2464 50 -0.02 74
IV.SMA1.EHZ. 2018-09-30T00:35:38.40 0.1 undecidable manual P 110 0.4874 50 -0.04 94
IV.CESI.HHZ. 2018-09-30T00:35:38.33 0.3 undecidable manual S 34 0.25 50 -0.26 71
IV.CESX.HHZ. 2018-09-30T00:35:37.51 0.3 undecidable manual S 206 0.2113 50 0.06 74
IV.RM33.EHZ. 2018-09-30T00:35:37.74 0.1 undecidable manual P 128 0.4694 50 -0.39 88
IV.CSP1.EHZ. 2018-09-30T00:35:37.79 0.6 positive manual P 51 0.4649 50 -0.25 45
IV.MC2.EHZ. 2018-09-30T00:35:36.39 0.1 undecidable manual P 72 0.3669 50 0.01 97
IV.NRCA.HHZ. 2018-09-30T00:35:35.00 0.1 undecidable manual P 83 0.2968 50 -0.18 95
IV.ASSB.HHZ. 2018-09-30T00:35:34.21 0.1 undecidable manual P 351 0.2464 50 -0.11 97
IV.CESI.HHZ. 2018-09-30T00:35:34.19 0.1 undecidable manual P 34 0.25 50 -0.18 96
IV.MOMA.HHZ. 2018-09-30T00:35:34.16 0.3 undecidable manual S 273 0.1043 132 0.14 75
IV.ARRO.EHZ. 2018-09-30T00:35:33.85 0.1 undecidable manual P 170 0.223 50 -0.06 99
IV.CESX.HHZ. 2018-09-30T00:35:33.74 0.3 undecidable manual P 206 0.2113 50 0.03 75
IV.MOMA.HHZ. 2018-09-30T00:35:31.84 0.1 undecidable manual P 273 0.1043 132 0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHN. ML:1.5 0.000328 0.2 AML other m 2018-09-30T00:35:34.86
IV.MOMA.HHE. ML:1.5 0.000335 1.48 AML other m 2018-09-30T00:35:35.25
IV.ARRO.EHE. ML:1 6.44E-5 0.8 AML other m 2018-09-30T00:35:38.40
IV.ASSB.HHE. ML:1.4 0.00012145 0.28 AML other m 2018-09-30T00:35:38.99
IV.CESI.HHE. ML:1.2 8.235E-5 0.08 AML other m 2018-09-30T00:35:38.87
IV.CESX.HHN. ML:1.2 9.81E-5 1.36 AML other m 2018-09-30T00:35:38.99
IV.ASSB.HHN. ML:1.2 8.935E-5 1.68 AML other m 2018-09-30T00:35:39.95
IV.NRCA.HHE. ML:1.4 0.00010155 0.7 AML other m 2018-09-30T00:35:40.49
IV.CESI.HHN. ML:1.3 0.000105 0.88 AML other m 2018-09-30T00:35:40.77
IV.ARRO.EHN. ML:1 5.54E-5 0.2 AML other m 2018-09-30T00:35:40.41
IV.CESX.HHE. ML:1.2 8.845E-5 1.42 AML other m 2018-09-30T00:35:40.80
IV.NRCA.HHN. ML:1.4 0.00010265 1.2 AML other m 2018-09-30T00:35:41.30
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