Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 25-01-2020 and time 03:05:34 (Italy) in region 4 km W Castelsantangelo sul Nera (MC)

A magnitude ML 0.5 earthquake occured in region: 4 km W Castelsantangelo sul Nera (MC), on

  • 25-01-2020 02:05:34 (UTC)
  • 25-01-2020 03:05:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8820, 13.1080 at 9 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.

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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
Castelsantangelo sul Nera MC 4 281 281
Preci PG 6 724 1005
Visso MC 6 1107 2112
Ussita MC 8 444 2556
Norcia PG 10 4957 7513
Sellano PG 15 1079 8592
Monte Cavallo MC 15 145 8737
Bolognola MC 16 142 8879
Cerreto di Spoleto PG 17 1075 9954
Fiordimonte MC 17 202 10156
Acquacanina MC 18 121 10277
Fiastra MC 18 559 10836
Montemonaco AP 18 604 11440
Pieve Torina MC 19 1458 12898
Montegallo AP 19 523 13421
Arquata del Tronto AP 20 1178 14599
Cascia PG 20 3217 17816

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Foligno (57155 inhabitants)
52 Km NE of Terni (111501 inhabitants)
55 Km W of Teramo (54892 inhabitants)
64 Km NW of L'Aquila (69753 inhabitants)
64 Km E of Perugia (166134 inhabitants)
88 Km SW of Ancona (100861 inhabitants)
94 Km W of Montesilvano (53738 inhabitants)
97 Km NE of Viterbo (67173 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
Reviewed
Rev100 		ML 0.5 2020-01-25
02:05:34		 42.8818 13.1082 9 2020-01-25
23:07:45		 Sala Sismica INGV-Roma 75855261
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-25 02:05:34 ± 0.08
Latitude 42.8818 ± 0.0018
Longitude 13.1082 ± 0.0037
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 75855261

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 277
Semi-minor axis of confidence ellipse (meter) 94
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 259
Circular confidence region, given by single value of horizontal uncertainty (meter) 280.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 120
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.28329
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 75855261
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-25 23:07:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EUCT.HNZ. 2020-01-25T02:06:28.98 3.0 negative manual Pg 13.03 0
IV.LNSS.HNE. 2020-01-25T02:05:46.13 0.6 undecidable manual S 190 31.4463 105 -0.01 50
IV.MML1.EHZ. 2020-01-25T02:05:44.84 0.6 undecidable manual S 337 27.9498 107 -0.14 49
IV.CSP1.EHZ. 2020-01-25T02:05:43.58 0.6 undecidable manual S 19 24.5532 109 -0.28 48
IV.CESI.HNZ. 2020-01-25T02:05:43.11 0.6 undecidable manual S 310 21.4674 112 0.27 48
IV.FDMO.HHZ. 2020-01-25T02:05:41.64 0.6 undecidable manual S 354 17.2716 117 0.13 50
IV.LNSS.HNE. 2020-01-25T02:05:41.34 0.1 undecidable manual P 190 31.4463 105 -0.01 100
IV.MMO1.EHZ. 2020-01-25T02:05:41.79 0.6 undecidable manual S 84 17.871 116 0.08 50
IV.MF5.EHN. 2020-01-25T02:05:41.28 0.1 undecidable manual P 68 30.8469 106 0.04 99
IV.MML1.EHZ. 2020-01-25T02:05:40.48 0.1 undecidable manual P 337 27.9498 107 -0.21 96
IV.CSP1.EHZ. 2020-01-25T02:05:40.10 1.0 undecidable manual P 19 24.5532 109 0.06 25
IV.CESI.HNZ. 2020-01-25T02:05:39.53 0.1 undecidable manual P 310 21.4674 112 0.08 100
IV.FDMO.HHZ. 2020-01-25T02:05:38.74 0.6 undecidable manual P 354 17.2716 117 0.06 51
IV.NRCA.HHZ. 2020-01-25T02:05:38.11 0.6 undecidable manual S 175 5.3946 148 -0.24 50
IV.MMO1.EHZ. 2020-01-25T02:05:38.88 1.0 negative manual P 84 17.871 116 0.08 25
IV.MC2.EHZ. 2020-01-25T02:05:38.83 0.6 undecidable manual S 63 7.2927 140 0.08 51
IV.MC2.EHZ. 2020-01-25T02:05:37.24 1.0 undecidable manual P 63 7.2927 140 0.15 25
IV.NRCA.HHZ. 2020-01-25T02:05:36.94 0.6 undecidable manual P 175 5.3946 148 0.08 51
TV.SF04.EHZ. 2020-01-25T02:05:35.03 3.0 undecidable manual P 0 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.4 0.00001971272 0.2 AML other m 2020-01-25T02:05:41.75
IV.FDMO.HHN. ML:0.4 0.000020146155 0.32 AML other m 2020-01-25T02:05:41.74
IV.CSP1.EHE. ML:0.9 0.000044326686500000003 1.3584 AML other m 2020-01-25T02:05:44.28
IV.CSP1.EHN. ML:0.5 0.000017946355 1.3008 AML other m 2020-01-25T02:05:43.26
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