Earthquake with magnitude of ML 0.9 on date 31-12-2019 and time 16:11:48 (Italy) in region 7 km SW Monte Cavallo (MC)

A magnitude ML 0.9 earthquake occured in region: 7 km SW Monte Cavallo (MC), on

  • 31-12-2019 15:11:48 (UTC)
  • 31-12-2019 16:11:48 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.94, 12.98 at 12 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
Sellano PG 7 1079 1079
Monte Cavallo MC 7 145 1224
Preci PG 8 724 1948
Visso MC 9 1107 3055
Pieve Torina MC 13 1458 4513
Ussita MC 13 444 4957
Cerreto di Spoleto PG 14 1075 6032
Fiordimonte MC 15 202 6234
Serravalle di Chienti MC 15 1070 7304
Castelsantangelo sul Nera MC 15 281 7585
Pievebovigliana MC 17 866 8451
Muccia MC 17 915 9366
Fiastra MC 18 559 9925
Norcia PG 19 4957 14882
Acquacanina MC 19 121 15003
Trevi PG 20 8469 23472

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km E of Foligno (57155 inhabitants)
50 Km NE of Terni (111501 inhabitants)
51 Km E of Perugia (166134 inhabitants)
67 Km W of Teramo (54892 inhabitants)
74 Km NW of L'Aquila (69753 inhabitants)
87 Km SW of Ancona (100861 inhabitants)
92 Km NE of Viterbo (67173 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 0.9 2019-12-31
15:11:48
42.94 12.97 12 2019-12-31
15:19:42
Sala Sismica INGV-Roma 75142541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-31 15:11:48 ± 0.07
Latitude 42.94 ± 0.00
Longitude 12.97 ± 0.00
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 75142541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 400
Semi-minor axis of confidence ellipse (meter) 116
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 225
Circular confidence region, given by single value of horizontal uncertainty (meter) 400
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 30
Number of defining phases 22
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
Epicentral distance of station farthest from the epicenter (degree) 0.25541
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 11
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.4
Num. used stations 10
Type of magnitude ML
Reference to an origin 75142541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-31 15:19:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
SI.KOSI.HHZ. 2019-12-31T15:13:25.02 3.0 undecidable manual Sg 11.92 0
IV.MSSA.HHZ. 2019-12-31T15:13:13.12 3.0 undecidable manual Sg 19.459999 0
IV.SPS2.HHZ. 2019-12-31T15:13:04.47 3.0 negative manual Pg 16.639999 0
MN.TRI.HHZ. 2019-12-31T15:12:54.03 3.0 undecidable manual Sg 1.01 0
GU.TRAV.HHZ. 2019-12-31T15:12:52.01 3.0 undecidable manual Pn 7.84 0
IT.VNF1.HGZ. 2019-12-31T15:12:10.38 3.0 negative manual Pn 0.14 0
IV.LMD.HHZ. 2019-12-31T15:12:00.84 3.0 negative manual Pn -1.68 0
IV.PF6.EHZ. 2019-12-31T15:11:58.29 0.3 undecidable manual S 39 0.2554 94 -0.04 72
IV.GAVE.EHZ. 2019-12-31T15:11:58.25 0.3 undecidable manual S 194 0.2536 94 -0.02 73
IV.ASSB.HHZ. 2019-12-31T15:11:58.11 0.1 undecidable manual S 294 0.2536 94 -0.16 94
IV.CSP1.EHZ. 2019-12-31T15:11:57.44 0.3 undecidable manual S 48 0.2275 95 -0.05 72
IV.MML1.EHZ. 2019-12-31T15:11:55.99 0.3 undecidable manual S 359 0.1745 99 0.04 73
IV.MC2.EHE. 2019-12-31T15:11:55.50 0.3 undecidable manual S 100 0.1592 101 0.01 74
IV.NRCA.HHZ. 2019-12-31T15:11:54.88 0.3 undecidable manual S 136 0.1466 104 -0.25 71
IV.GAVE.EHZ. 2019-12-31T15:11:54.06 0.3 undecidable manual P 194 0.2536 94 0 73
IV.FDMO.HHZ. 2019-12-31T15:11:54.46 0.3 undecidable manual S 40 0.1277 110 -0.13 72
IV.ASSB.HHZ. 2019-12-31T15:11:54.02 0.6 undecidable manual P 294 0.2536 94 -0.03 48
IV.PE3.EHZ. 2019-12-31T15:11:53.86 3.0 undecidable manual P -1.33 0
IV.FEMA.HNE. 2019-12-31T15:11:53.06 0.3 undecidable manual S 67 0.0594 142 0.09 75
IV.MML1.EHZ. 2019-12-31T15:11:53.22 0.6 undecidable manual P 359 0.1745 99 0.51 44
IV.PF6.EHZ. 2019-12-31T15:11:53.91 0.1 undecidable manual P 39 0.2554 94 -0.18 94
IV.CESI.HHZ. 2019-12-31T15:11:53.47 0.1 undecidable manual S 322 0.0836 130 0 100
IV.CSP1.EHZ. 2019-12-31T15:11:53.60 0.1 undecidable manual P 48 0.2275 95 -0.01 98
IV.MC2.EHE. 2019-12-31T15:11:52.94 0.6 undecidable manual P 100 0.1592 101 0.49 45
IV.NRCA.HHZ. 2019-12-31T15:11:52.12 0.1 negative manual P 136 0.1466 104 -0.12 97
IT.MTCL.HGE. 2019-12-31T15:11:52.62 0.3 undecidable manual S 18 0.0576 143 -0.32 70
IT.MTCL.HGE. 2019-12-31T15:11:51.12 0.3 undecidable manual P 18 0.0576 143 0.14 74
IV.CESI.HHZ. 2019-12-31T15:11:51.38 0.1 negative manual P 322 0.0836 130 0.1 99
IV.FDMO.HHZ. 2019-12-31T15:11:51.90 0.6 undecidable manual P 40 0.1277 110 -0.04 49
IV.FEMA.HNE. 2019-12-31T15:11:51.44 0.3 undecidable manual P 67 0.0594 142 0.44 69
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:0.9 8.415E-5 0.12 AML other m 2019-12-31T15:11:53.48
IV.CESI.HHE. ML:0.8 7.925E-5 0.08 AML other m 2019-12-31T15:11:53.52
IV.FDMO.HHE. ML:0.6 3.805E-5 0.16 AML other m 2019-12-31T15:11:54.59
IV.FDMO.HHN. ML:0.4 2.73E-5 0.14 AML other m 2019-12-31T15:11:54.80
IV.NRCA.HHN. ML:1.1 0.0001003 0.08 AML other m 2019-12-31T15:11:55.09
IV.NRCA.HHE. ML:0.9 6.89E-5 1.42 AML other m 2019-12-31T15:11:55.72
IV.CSP1.EHN. ML:0.8 3.59E-5 0.72 AML other m 2019-12-31T15:11:58.51
IV.PE3.EHN. ML:2.2 0.00016835 0.68 AML other m 2019-12-31T15:11:58.50
IV.CSP1.EHE. ML:0.8 3.575E-5 0.42 AML other m 2019-12-31T15:12:03.45
IV.PE3.EHE. ML:2 0.0001102565 0.06 AML other m 2019-12-31T15:12:05.13
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