Earthquake with magnitude of ML 0.1 on date 31-01-2018 and time 21:59:28 (Italy) in region 3 km SW Bolognola (MC)

A magnitude ML 0.1 earthquake occured in region: 3 km SW Bolognola (MC), on

  • 31-01-2018 20:59:28 (UTC)
  • 31-01-2018 21:59:28 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.974, 13.2 at 4 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 7 121 707
Fiastra MC 8 559 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 12 1178 7298
Amandola FM 13 3629 10927
Montemonaco AP 13 604 11531
Pievebovigliana MC 14 866 12397
Pieve Torina MC 15 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 18 915 16966
Comunanza AP 18 3166 20132
San Ginesio MC 18 3498 23630
Montegallo AP 18 523 24153
Camporotondo di Fiastrone MC 19 563 24716
Caldarola MC 19 1823 26539

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km E of Foligno (57155 inhabitants)
54 Km NW of Teramo (54892 inhabitants)
64 Km NE of Terni (111501 inhabitants)
68 Km E of Perugia (166134 inhabitants)
71 Km N of L'Aquila (69753 inhabitants)
76 Km SW of Ancona (100861 inhabitants)
93 Km NW of Montesilvano (53738 inhabitants)
98 Km S of Fano (60888 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
Bulletin
Rev1000
ML 0.1 2018-01-31
20:59:28
42.9737 13.1998 5 2019-04-24
14:49:30
Bollettino Sismico Italiano INGV 56413241
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-01-31 20:59:28 ± 0.2
Latitude 42.9737 ± 0.0036
Longitude 13.1998 ± 0.0061
Depth (km) 5 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 56413241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 508
Semi-minor axis of confidence ellipse (meter) 181
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 78
Circular confidence region, given by single value of horizontal uncertainty (meter) 510
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 103
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.19066
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.1

Field Value
Value 0.1
Uncertainty 0
Num. used stations 3
Type of magnitude ML
Reference to an origin 56413241
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-05-03 06:14:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CAFI.HHZ. 2018-01-31T20:59:46.92 3.0 undecidable manual P -0.01 0
IV.NRCA.HHZ. 2018-01-31T20:59:34.75 0.3 undecidable manual S 204 0.1538 105 -0.06 76
IV.CSP1.EHZ. 2018-01-31T20:59:33.64 0.1 undecidable manual S 2 0.1178 109 0.13 100
IV.FDMO.HHZ. 2018-01-31T20:59:33.04 0.3 undecidable manual S 307 0.1034 111 0.06 76
IV.MMO1.EHZ. 2018-01-31T20:59:33.39 0.1 undecidable manual S 129 0.1187 109 -0.15 100
IV.MF5.EHN. 2018-01-31T20:59:33.44 0.3 undecidable manual P 86 0.1907 102 0.4 70
IV.NRCA.HHZ. 2018-01-31T20:59:32.58 0.3 undecidable manual P 204 0.1538 105 0.35 71
IV.MMO1.EHZ. 2018-01-31T20:59:31.23 0.3 positive manual P 129 0.1187 109 -0.27 73
IV.GUMA.HNN. 2018-01-31T20:59:31.91 0.3 undecidable manual P 48 0.1331 107 0.11 75
IV.MC2.EHZ. 2018-01-31T20:59:31.73 0.3 undecidable manual S 187 0.063 123 0.15 75
IV.CSP1.EHZ. 2018-01-31T20:59:31.23 0.1 undecidable manual P 2 0.1178 109 -0.25 97
IV.MC2.EHZ. 2018-01-31T20:59:30.27 3.0 positive manual P 187 0.063 123 -0.09 76
IV.FDMO.HHZ. 2018-01-31T20:59:30.98 0.1 undecidable manual P 307 0.1034 111 -0.2 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.1 2.11E-5 0.56 AML other m 2018-01-31T20:59:34.96
IV.CSP1.EHE. ML:0.1 1.58801E-5 0.7168 AML other m 2018-01-31T20:59:34.07
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download