Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.6 on date 31-01-2020 and time 22:24:40 (Italy) in region 5 km E Montegallo (AP)

A magnitude ML 0.6 earthquake occured in region: 5 km E Montegallo (AP), on

  • 31-01-2020 21:24:40 (UTC)
  • 31-01-2020 22:24:40 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8570, 13.3890 at 15 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Montegallo AP 5 523 523
Montemonaco AP 7 604 1127
Roccafluvione AP 7 2010 3137
Palmiano AP 8 196 3333
Venarotta AP 9 2066 5399
Acquasanta Terme AP 10 2916 8315
Montefortino FM 10 1178 9493
Comunanza AP 12 3166 12659
Arquata del Tronto AP 12 1178 13837
Amandola FM 14 3629 17466
Force AP 15 1354 18820
Ascoli Piceno AP 15 49407 68227
Montefalcone Appennino FM 16 424 68651
Valle Castellana TE 16 977 69628
Smerillo FM 17 365 69993
Rotella AP 18 906 70899
Castelsantangelo sul Nera MC 20 281 71180
Monte San Martino MC 20 765 71945

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km NW of Teramo (54892 inhabitants)
56 Km N of L'Aquila (69753 inhabitants)
57 Km E of Foligno (57155 inhabitants)
69 Km E of Terni (111501 inhabitants)
73 Km NW of Montesilvano (53738 inhabitants)
80 Km NW of Pescara (121014 inhabitants)
85 Km NW of Chieti (51815 inhabitants)
85 Km S of Ancona (100861 inhabitants)
86 Km E of Perugia (166134 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 0.6 2020-01-31
21:24:40		 42.8567 13.3887 15 2020-07-18
21:08:21		 Bollettino Sismico Italiano INGV 76648411
Reviewed
Rev100 		ML 1.8 2020-01-31
21:24:40		 42.8583 13.3933 15 2020-01-31
21:33:12		 Sala Sismica INGV-Roma 76082311
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-31 21:24:40 ± 0.1
Latitude 42.8567 ± 0.0045
Longitude 13.3887 ± 0.0074
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 76648411

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 588
Semi-minor axis of confidence ellipse (meter) 143
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 77
Circular confidence region, given by single value of horizontal uncertainty (meter) 590.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 110
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.06205
Epicentral distance of station farthest from the epicenter (degree) 0.37052
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 76648411
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-02-19 12:21:22

ML:1.8

Field Value
Value 1.8
Uncertainty 0.8
Num. used stations 4
Type of magnitude ML
Reference to an origin 76082311
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-31 21:33:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LNSS.HNZ. 2020-01-31T21:24:54.21 0.3 undecidable manual S 225 39.9267 99 0.35 68
IV.RM33.HNZ. 2020-01-31T21:24:54.73 0.3 undecidable manual S 200 41.1255 99 0.57 64
IV.CAMP.HHE. 2020-01-31T21:24:52.73 0.3 undecidable manual S 177 35.6421 101 0.01 73
IV.MNTT.EHE. 2020-01-31T21:24:51.59 0.6 undecidable manual S 36 28.3494 105 0.78 39
IV.CSP1.EHZ. 2020-01-31T21:24:51.34 0.3 undecidable manual S 330 30.0477 104 0.08 72
IV.FDMO.HHN. 2020-01-31T21:24:51.55 0.3 undecidable manual S 309 31.5462 103 -0.12 71
IV.TERO.HHZ. 2020-01-31T21:24:51.53 0.3 undecidable manual S 146 31.3464 103 -0.06 73
IV.SMA1.EHZ. 2020-01-31T21:24:50.07 0.3 undecidable manual S 190 25.4523 107 -0.01 74
IV.T1299.HNN. 2020-01-31T21:24:50.66 0.3 undecidable manual S 199 26.1516 107 0.4 68
IV.NRCA.HHZ. 2020-01-31T21:24:49.35 0.3 undecidable manual S 264 22.4553 111 0.02 74
IV.LNSS.HNZ. 2020-01-31T21:24:48.17 0.1 undecidable manual P 225 39.9267 99 -0.11 94
IV.RM33.HNZ. 2020-01-31T21:24:48.71 0.1 undecidable manual P 200 41.1255 99 0.26 92
IV.MC2.EHZ. 2020-01-31T21:24:48.32 0.3 undecidable manual S 291 17.3715 120 0.23 72
IV.TERO.HHZ. 2020-01-31T21:24:47.01 0.3 undecidable manual P 146 31.3464 103 0.04 73
IV.MF5.EHZ. 2020-01-31T21:24:47.99 0.3 undecidable manual S 22 15.6732 124 0.28 70
IV.MNTT.EHE. 2020-01-31T21:24:47.06 0.3 undecidable manual P 36 28.3494 105 0.54 65
IV.CAMP.HHE. 2020-01-31T21:24:47.14 0.1 undecidable manual P 177 35.6421 101 -0.48 88
IV.MTRA.EHE. 2020-01-31T21:24:46.57 0.3 undecidable manual S 177 11.0778 136 -0.2 73
IV.T1299.HNN. 2020-01-31T21:24:46.16 0.3 undecidable manual P 199 26.1516 107 -0.04 73
IV.CSP1.EHZ. 2020-01-31T21:24:46.78 0.1 undecidable manual P 330 30.0477 104 0 98
IV.FDMO.HHN. 2020-01-31T21:24:46.91 0.1 undecidable manual P 309 31.5462 103 -0.1 95
IV.MC2.EHZ. 2020-01-31T21:24:45.03 0.1 undecidable manual P 291 17.3715 120 0.09 99
IV.MMO1.EHZ. 2020-01-31T21:24:45.90 0.3 undecidable manual S 313 6.8931 151 -0.2 74
IV.NRCA.HHZ. 2020-01-31T21:24:45.52 0.1 undecidable manual P 264 22.4553 111 -0.14 96
IV.SMA1.EHZ. 2020-01-31T21:24:45.93 0.1 undecidable manual P 190 25.4523 107 -0.17 95
IV.MTRA.EHE. 2020-01-31T21:24:44.03 0.1 undecidable manual P 177 11.0778 136 -0.15 98
IV.MF5.EHZ. 2020-01-31T21:24:44.03 0.1 undecidable manual P 22 15.6732 124 -0.69 85
IV.MMO1.EHZ. 2020-01-31T21:24:43.68 0.1 undecidable manual P 313 6.8931 151 -0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.1 0.00008165 1.3 AML other m 2020-01-31T21:24:49.04
IV.NRCA.HHN. ML:1.1 0.00006809999999999999 0.16 AML other m 2020-01-31T21:24:49.68
IV.SMA1.EHE. ML:0.5 0.000014763730000000001 0.0768 AML other m 2020-01-31T21:24:50.81
IV.SMA1.EHN. ML:0.6 0.000017517488499999998 0.1408 AML other m 2020-01-31T21:24:50.18
IV.TERO.HHN. ML:0.1 0.000007411724 0.064 AML other m 2020-01-31T21:24:52.68
IV.TERO.HHE. ML:0.4 0.000008665020499999999 0.0768 AML other m 2020-01-31T21:24:52.90
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