Earthquake with magnitude of ML 0.4 on date 18-03-2020 and time 23:33:37 (UTC) in region 3 km SW Bolognola (MC)

A magnitude ML 0.4 earthquake occured in region: 3 km SW Bolognola (MC), on

  • 18-03-2020 23:33:37 (UTC)
  • 19-03-2020 00:33:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.98, 13.2 at 7 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
Bolognola MC 3 142 142
Ussita MC 6 444 586
Acquacanina MC 6 121 707
Fiastra MC 7 559 1266
Castelsantangelo sul Nera MC 10 281 1547
Visso MC 10 1107 2654
Sarnano MC 11 3264 5918
Fiordimonte MC 11 202 6120
Montefortino FM 13 1178 7298
Amandola FM 13 3629 10927
Pievebovigliana MC 13 866 11793
Montemonaco AP 14 604 12397
Pieve Torina MC 14 1458 13855
Gualdo MC 15 815 14670
Cessapalombo MC 16 512 15182
Monte Cavallo MC 16 145 15327
Preci PG 17 724 16051
Muccia MC 17 915 16966
San Ginesio MC 18 3498 20464
Comunanza AP 18 3166 23630
Camporotondo di Fiastrone MC 18 563 24193
Caldarola MC 18 1823 26016
Montegallo AP 19 523 26539

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km E of Foligno (57155 inhabitants)
55 Km NW of Teramo (54892 inhabitants)
64 Km NE of Terni (111501 inhabitants)
67 Km E of Perugia (166134 inhabitants)
72 Km N of L'Aquila (69753 inhabitants)
76 Km SW of Ancona (100861 inhabitants)
93 Km NW of Montesilvano (53738 inhabitants)
97 Km S of Fano (60888 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 0.4 2020-03-18
23:33:37
42.98 13.2 7 2020-03-18
23:43:37
Sala Sismica INGV-Roma 77366681
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-18 23:33:37 ± 0.12
Latitude 42.98 ± 0.01
Longitude 13.20 ± 0.01
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77366681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 554
Semi-minor axis of confidence ellipse (meter) 312
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 47
Circular confidence region, given by single value of horizontal uncertainty (meter) 550
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 74
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.35793
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.1
Num. used stations 3
Type of magnitude ML
Reference to an origin 77366681
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-18 23:43:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
CR.STON.BHZ. 2020-03-18T23:35:24.02 3.0 undecidable manual Sg 4.59 0
IV.ACATE.EHZ. 2020-03-18T23:35:20.40 3.0 negative manual Pg 17.99 0
SI.BOSI.HHZ. 2020-03-18T23:35:15.47 3.0 undecidable manual Sn -2.32 0
IV.IOCA.HHZ. 2020-03-18T23:34:40.40 3.0 undecidable manual Sg -2.55 0
IV.FIR.HHZ. 2020-03-18T23:33:58.89 3.0 positive manual Pn 0.88 0
IV.EL6.EHZ. 2020-03-18T23:33:51.24 0.3 undecidable manual S 349 0.3579 50 0.1 71
IV.CESI.HHE. 2020-03-18T23:33:46.18 0.3 undecidable manual S 277 0.2149 107 0.23 71
IV.MML1.HNE. 2020-03-18T23:33:45.97 0.3 undecidable manual S 310 0.2122 107 0.11 73
IV.EL6.EHZ. 2020-03-18T23:33:44.95 0.3 undecidable manual P 349 0.3579 50 -0.33 67
IV.NRCA.HNZ. 2020-03-18T23:33:43.85 0.6 undecidable manual S 203 0.1565 113 0.01 50
IV.MMO1.EHZ. 2020-03-18T23:33:42.74 0.3 undecidable manual S 129 0.1241 118 0.04 75
IV.MF5.EHZ. 2020-03-18T23:33:42.45 0.3 undecidable manual P 87 0.1934 109 0.63 64
IV.MML1.HNE. 2020-03-18T23:33:42.11 0.3 undecidable manual P 310 0.2122 107 -0.13 72
IV.CESI.HHE. 2020-03-18T23:33:42.70 0.3 undecidable manual P 277 0.2149 107 0.42 68
IV.CSP1.EHZ. 2020-03-18T23:33:42.43 0.3 undecidable manual S 3 0.1133 120 0.06 75
IV.FDMO.HHZ. 2020-03-18T23:33:41.63 0.1 undecidable manual S 306 0.0989 124 -0.24 96
IV.CSP1.EHZ. 2020-03-18T23:33:40.37 0.1 undecidable manual P 3 0.1133 120 0.15 98
IV.MMO1.EHZ. 2020-03-18T23:33:40.44 0.1 undecidable manual P 129 0.1241 118 0.02 100
IV.NRCA.HNZ. 2020-03-18T23:33:40.64 0.3 undecidable manual P 203 0.1565 113 -0.43 69
IV.FDMO.HHZ. 2020-03-18T23:33:39.88 0.1 undecidable manual P 306 0.0989 124 -0.05 100
IV.GUMA.HHE. 2020-03-18T23:33:39.98 0.3 undecidable manual P 50 0.1322 117 -0.6 65
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.3 2.9321685E-5 0.1536 AML other m 2020-03-18T23:33:41.00
IV.FDMO.HHN. ML:0.3 2.7202215E-5 0.1536 AML other m 2020-03-18T23:33:41.95
IV.CSP1.EHE. ML:0.5 3.2835885E-5 0.1408 AML other m 2020-03-18T23:33:43.55
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download