ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of ML 1.1 on date 25-12-2018 and time 02:00:50 (UTC) in region 1 km N Campello sul Clitunno (PG)

A magnitude ML 1.1 earthquake occured in region: 1 km N Campello sul Clitunno (PG), on

  • 25-12-2018 02:00:50 (UTC)
  • 25-12-2018 03:00:50 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.83, 12.78 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Campello sul Clitunno PG 1 2442 2442
Trevi PG 6 8469 10911
Castel Ritaldi PG 9 3278 14189
Vallo di Nera PG 10 364 14553
Spoleto PG 11 38218 52771
Cerreto di Spoleto PG 11 1075 53846
Sant'Anatolia di Narco PG 12 564 54410
Montefalco PG 13 5679 60089
Scheggino PG 14 461 60550
Sellano PG 14 1079 61629
Foligno PG 15 57155 118784
Giano dell'Umbria PG 16 3846 122630
Bevagna PG 18 5081 127711
Poggiodomo PG 18 117 127828

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km SE of Foligno (57155 inhabitants)
32 Km NE of Terni (111501 inhabitants)
44 Km SE of Perugia (166134 inhabitants)
72 Km NE of Viterbo (67173 inhabitants)
74 Km NW of L'Aquila (69753 inhabitants)
78 Km W of Teramo (54892 inhabitants)
92 Km N of Guidonia Montecelio (88673 inhabitants)
96 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 2018-12-25
02:00:50
42.83 12.78 11 2018-12-25
02:18:49
Sala Sismica INGV-Roma 64200571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-12-25 02:00:50 ± 0.02
Latitude 42.83 ± 0.00
Longitude 12.78 ± 0.00
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 64200571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 168
Semi-minor axis of confidence ellipse (meter) 135
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 268
Circular confidence region, given by single value of horizontal uncertainty (meter) 170
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 35
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.31656
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 9
Type of magnitude ML
Reference to an origin 64200571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-12-25 02:18:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IT.VRB.HGZ. 2018-12-25T02:02:31.43 3.0 undecidable manual Sn 0.44 0
IV.MCRV.HHZ. 2018-12-25T02:02:09.37 3.0 undecidable manual Sg 16.030001 0
IV.MSSA.HHZ. 2018-12-25T02:01:53.27 3.0 undecidable manual Sn -0.12 0
IV.PTRJ.HNZ. 2018-12-25T02:01:50.38 3.0 undecidable manual Sg 13.49 0
RF.GEPF.HHZ. 2018-12-25T02:01:30.50 3.0 positive manual Pn -1.34 0
IV.MCRV.HHZ. 2018-12-25T02:01:23.42 3.0 undecidable manual Pg 4.4 0
IV.PAOL.HHZ. 2018-12-25T02:01:11.76 3.0 undecidable manual Pn -0.98 0
IV.PTRJ.HNZ. 2018-12-25T02:01:10.44 3.0 undecidable manual Pn 0.66 0
IV.MML1.EHE. 2018-12-25T02:01:02.63 0.6 undecidable manual S 26 0.3166 50 0.24 47
IV.FDMO.HHE. 2018-12-25T02:01:02.08 0.3 undecidable manual S 48 0.3058 50 0 74
IV.LNSS.HHN. 2018-12-25T02:01:01.79 0.3 undecidable manual S 140 0.2977 50 -0.06 73
IV.POFI.HHZ. 2018-12-25T02:01:01.11 3.0 undecidable manual P -0.88 0
IV.NRCA.HNZ. 2018-12-25T02:01:00.32 0.3 undecidable manual S 89 0.2464 50 0 74
IV.ARRO.EHN. 2018-12-25T02:01:00.51 0.3 undecidable manual S 182 0.2509 50 0.04 74
IV.CESX.HHN. 2018-12-25T02:01:00.93 0.3 undecidable manual S 212 0.2626 50 0.12 72
IT.MTCL.HGN. 2018-12-25T02:00:59.74 0.3 undecidable manual S 45 0.2302 50 -0.09 73
IV.ASSB.HHZ. 2018-12-25T02:00:59.70 0.3 undecidable manual S 338 0.2293 50 -0.12 73
IV.CESI.HHZ. 2018-12-25T02:00:58.68 0.3 undecidable manual S 28 0.197 50 -0.19 72
IV.LNSS.HHN. 2018-12-25T02:00:57.08 0.1 undecidable manual P 140 0.2977 50 0.02 98
IT.FOPC.HGE. 2018-12-25T02:00:57.44 0.3 undecidable manual S 338 0.1493 123 0.04 75
IV.FDMO.HHE. 2018-12-25T02:00:57.23 0.1 undecidable manual P 48 0.3058 50 0.04 97
IV.MOMA.HHZ. 2018-12-25T02:00:57.58 0.3 undecidable manual S 260 0.1547 122 0 76
IT.GNU.HGN. 2018-12-25T02:00:57.64 0.3 undecidable manual S 260 0.1547 122 0.07 75
IV.MML1.EHE. 2018-12-25T02:00:57.38 0.1 undecidable manual P 26 0.3166 50 0.01 98
IV.GAVE.EHZ. 2018-12-25T02:00:57.69 0.3 undecidable manual S 148 0.1619 121 -0.12 74
IV.CESX.HHN. 2018-12-25T02:00:56.37 0.1 undecidable manual P 212 0.2626 50 -0.09 97
IV.NRCA.HNZ. 2018-12-25T02:00:56.20 0.1 undecidable manual P 89 0.2464 50 0.03 99
IV.ARRO.EHN. 2018-12-25T02:00:56.30 0.1 undecidable manual P 182 0.2509 50 0.04 98
IV.CESI.HHZ. 2018-12-25T02:00:55.41 0.1 undecidable manual P 28 0.197 50 0.07 99
IT.MTCL.HGN. 2018-12-25T02:00:55.92 0.1 undecidable manual P 45 0.2302 50 0.02 99
IV.ASSB.HHZ. 2018-12-25T02:00:55.89 0.1 undecidable manual P 338 0.2293 50 0 99
IT.GNU.HGN. 2018-12-25T02:00:54.22 0.3 undecidable manual P 260 0.1547 122 -0.37 70
IV.GAVE.EHZ. 2018-12-25T02:00:54.80 0.1 undecidable manual P 148 0.1619 121 0.07 99
IT.FOPC.HGE. 2018-12-25T02:00:54.61 0.1 undecidable manual P 338 0.1493 123 0.12 99
IV.MOMA.HHZ. 2018-12-25T02:00:54.64 0.1 undecidable manual P 260 0.1547 122 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHE. ML:1.4 0.0001905 1.6 AML other m 2018-12-25T02:00:58.17
IV.MOMA.HHN. ML:0.7 4.727222E-5 0.12 AML other m 2018-12-25T02:00:58.34
IV.MOMA.HHE. ML:1 8.3794005E-5 0.1408 AML other m 2018-12-25T02:00:58.25
IV.MOMA.HNE. ML:1 8.4302795E-5 0.2592 AML other m 2018-12-25T02:00:58.57
IV.GAVE.HNE. ML:1.4 0.0001823141 0.16 AML other m 2018-12-25T02:00:57.89
IV.GAVE.EHN. ML:1.4 0.0002085 0.36 AML other m 2018-12-25T02:00:58.11
IV.CESI.HHE. ML:0.7 3.463554E-5 0.08 AML other m 2018-12-25T02:00:59.04
IV.CESI.HHN. ML:1.1 8.641076E-5 0.16 AML other m 2018-12-25T02:00:59.23
IV.ASSB.HHE. ML:0.8 3.80725865E-5 0.1216 AML other m 2018-12-25T02:01:00.51
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