Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 25-01-2020 and time 04:03:31 (UTC) in region 2 km S Accumoli (RI)

A magnitude ML 1.7 earthquake occured in region: 2 km S Accumoli (RI), on

  • 25-01-2020 04:03:31 (UTC)
  • 25-01-2020 05:03:31 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6810, 13.2530 at 10 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
Accumoli RI 2 667 667
Amatrice RI 6 2657 3324
Cittareale RI 10 482 3806
Arquata del Tronto AP 11 1178 4984
Acquasanta Terme AP 16 2916 7900
Campotosto AQ 17 542 8442
Montereale AQ 17 2581 11023
Norcia PG 18 4957 15980
Capitignano AQ 18 665 16645
Montegallo AP 19 523 17168

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km W of Teramo (54892 inhabitants)
39 Km NW of L'Aquila (69753 inhabitants)
51 Km E of Terni (111501 inhabitants)
54 Km SE of Foligno (57155 inhabitants)
76 Km W of Montesilvano (53738 inhabitants)
82 Km W of Pescara (121014 inhabitants)
84 Km W of Chieti (51815 inhabitants)
85 Km SE of Perugia (166134 inhabitants)
87 Km NE of Guidonia Montecelio (88673 inhabitants)
88 Km NE of Tivoli (56533 inhabitants)
98 Km E 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
Bulletin
Rev1000 		ML 1.7 2020-01-25
04:03:31		 42.681 13.2533 10 2020-07-18
21:08:21		 Bollettino Sismico Italiano INGV 76649751
Reviewed
Rev100 		ML 1.7 2020-01-25
04:03:31		 42.6778 13.2653 10 2020-01-25
04:08:58		 Sala Sismica INGV-Roma 75825291
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-25 04:03:31 ± 0.05
Latitude 42.6810 ± 0.0036
Longitude 13.2533 ± 0.0049
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 76649751

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 357
Semi-minor axis of confidence ellipse (meter) 348
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 135
Circular confidence region, given by single value of horizontal uncertainty (meter) 360.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 69
Number of associated phases, regardless of their use for origin computation 45
Number of defining phases 43
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.05126
Epicentral distance of station farthest from the epicenter (degree) 0.82378
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 30
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 27
Type of magnitude ML
Reference to an origin 76649751
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-02-19 14:09:17

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 27
Type of magnitude ML
Reference to an origin 75825291
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-25 04:08:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2020-01-25T04:03:54.80 3.0 undecidable manual S 350 72.9714 50 1.46 0
IV.INTR.HHE. 2020-01-25T04:03:47.28 1.0 undecidable manual P 144 91.4418 50 0.5 20
IV.CSP1.EHE. 2020-01-25T04:03:46.00 1.0 undecidable manual S 355 45.7209 50 -0.07 24
IV.GUMA.HHZ. 2020-01-25T04:03:45.80 0.3 undecidable manual S 9 42.8238 50 0.5 65
IV.EL6.EHZ. 2020-01-25T04:03:44.82 1.0 undecidable manual P 350 72.9714 50 0.89 17
IV.MF5.EHZ. 2020-01-25T04:03:44.40 0.6 undecidable manual S 26 37.9287 50 0.41 45
IV.ATCC.EHE. 2020-01-25T04:03:44.14 1.0 undecidable manual P 319 74.8695 50 -0.09 22
IV.FDMO.HHZ. 2020-01-25T04:03:44.70 0.6 undecidable manual S 341 41.7249 50 -0.29 45
IV.SNTG.HHE. 2020-01-25T04:03:43.03 1.0 undecidable manual P 338 68.5758 50 -0.22 22
IV.ASSB.HHN. 2020-01-25T04:03:42.55 1.0 undecidable manual P 310 62.7927 50 0.19 22
IV.GIGS.HHZ. 2020-01-25T04:03:42.50 3.0 undecidable manual S 134 36.3414 50 -1.06 0
IV.T0110.HHZ. 2020-01-25T04:03:42.59 0.6 undecidable manual P 139 65.8896 50 -0.25 44
IV.VCEL.EHN. 2020-01-25T04:03:41.78 1.0 undecidable manual P 123 57.5979 50 0.23 22
IV.CESX.HHZ. 2020-01-25T04:03:41.05 0.6 undecidable manual P 262 55.0005 50 -0.11 46
IV.GAVE.EHZ. 2020-01-25T04:03:41.50 0.3 undecidable manual S 273 29.3484 50 -0.19 71
IV.MNTT.EHZ. 2020-01-25T04:03:41.02 0.3 undecidable manual P 33 50.616 50 0.54 63
IV.OFFI.HHZ. 2020-01-25T04:03:40.12 0.1 undecidable manual P 51 45.1215 50 0.49 86
IV.MML1.HNE. 2020-01-25T04:03:40.72 0.3 undecidable manual P 335 53.1024 50 -0.16 69
IV.FIAM.HNN. 2020-01-25T04:03:39.72 1.0 undecidable manual P 194 47.1195 50 -0.23 23
IV.MMO1.EHZ. 2020-01-25T04:03:39.90 1.0 undecidable manual S 14 24.9528 111 -0.44 23
IV.CSP1.EHE. 2020-01-25T04:03:39.44 0.3 undecidable manual P 355 45.7209 50 -0.29 68
IV.GUMA.HHZ. 2020-01-25T04:03:39.46 0.3 undecidable manual P 9 42.8238 50 0.17 70
IV.CESI.HHE. 2020-01-25T04:03:39.59 0.6 undecidable manual P 322 45.8208 50 -0.15 46
IV.NRCA.HHZ. 2020-01-25T04:03:38.70 1.0 undecidable manual S 326 20.3685 115 -0.18 24
IV.FDMO.HHZ. 2020-01-25T04:03:38.78 0.3 undecidable manual P 341 41.7249 50 -0.33 68
IV.RM33.EHZ. 2020-01-25T04:03:38.50 0.3 undecidable manual S 189 19.3695 116 -0.06 74
IV.MF5.EHZ. 2020-01-25T04:03:38.65 0.1 undecidable manual P 26 37.9287 50 0.12 95
IV.LNSS.HHZ. 2020-01-25T04:03:38.90 0.3 undecidable manual S 244 19.4694 116 0.31 70
IV.ARRO.EHZ. 2020-01-25T04:03:38.79 0.3 undecidable manual P 254 41.3253 50 -0.27 68
IV.CAMP.HHZ. 2020-01-25T04:03:38.40 0.3 undecidable manual S 142 20.5683 115 -0.53 67
IT.MTCL.HGZ. 2020-01-25T04:03:38.74 1.0 undecidable manual P 329 40.4262 50 -0.17 23
IV.GIGS.HHZ. 2020-01-25T04:03:37.91 0.3 undecidable manual P 134 36.3414 50 -0.37 68
IV.GAVE.EHZ. 2020-01-25T04:03:37.04 0.1 positive manual P 273 29.3484 50 -0.16 95
IV.MTRA.EHZ. 2020-01-25T04:03:36.60 0.3 undecidable manual S 54 14.3745 124 -0.47 69
IV.MMO1.EHZ. 2020-01-25T04:03:36.20 0.1 undecidable manual P 14 24.9528 111 -0.22 95
IV.MC2.EHZ. 2020-01-25T04:03:36.51 0.6 undecidable manual P 348 26.0517 110 -0.13 48
IV.CAMP.HHZ. 2020-01-25T04:03:35.47 0.1 undecidable manual P 142 20.5683 115 -0.14 97
IV.NRCA.HHZ. 2020-01-25T04:03:35.58 0.1 negative manual P 326 20.3685 115 0 100
IV.RM33.EHZ. 2020-01-25T04:03:35.48 0.1 positive manual P 189 19.3695 116 0.09 98
IV.SMA1.EHZ. 2020-01-25T04:03:35.40 0.3 undecidable manual S 130 8.6802 138 -0.17 74
IV.T1299.HNN. 2020-01-25T04:03:35.30 0.3 undecidable manual S 156 5.6943 149 0.36 71
IV.LNSS.HHZ. 2020-01-25T04:03:35.63 0.1 positive manual P 244 19.4694 116 0.22 96
IV.MTRA.EHZ. 2020-01-25T04:03:34.47 0.1 undecidable manual P 54 14.3745 124 -0.06 100
IV.T1299.HNN. 2020-01-25T04:03:33.74 0.1 positive manual P 156 5.6943 149 0.44 94
IV.SMA1.EHZ. 2020-01-25T04:03:33.88 0.1 undecidable manual P 130 8.6802 138 0.21 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.6 0.0005200000000000001 0.16 AML other m 2020-01-25T04:03:35.73
IV.SMA1.EHE. ML:1.5 0.00047299999999999995 0.32 AML other m 2020-01-25T04:03:35.81
IV.MTRA.EHN. ML:1.9 0.0008545 0.16 AML other m 2020-01-25T04:03:37.00
IV.MTRA.HNN. ML:2.0 0.0009295 1.56 AML other m 2020-01-25T04:03:37.00
IV.MTRA.EHE. ML:2.0 0.0009465 0.24 AML other m 2020-01-25T04:03:37.13
IV.MTRA.HNE. ML:2.0 0.0009705 0.22 AML other m 2020-01-25T04:03:37.01
IV.CAMP.HHE. ML:1.2 0.00010355000000000001 0.14 AML other m 2020-01-25T04:03:38.65
IV.CAMP.HHN. ML:1.1 0.00009135 0.2 AML other m 2020-01-25T04:03:38.69
IV.NRCA.HHN. ML:1.8 0.0004215 0.1 AML other m 2020-01-25T04:03:38.83
IV.LNSS.HHN. ML:1.6 0.00030100000000000005 0.16 AML other m 2020-01-25T04:03:39.18
IV.LNSS.HNN. ML:1.6 0.0003431658 0.8576 AML other m 2020-01-25T04:03:39.18
IV.LNSS.HHE. ML:1.7 0.0003485 0.72 AML other m 2020-01-25T04:03:39.56
IV.RM33.EHE. ML:1.5 0.000247 0.12 AML other m 2020-01-25T04:03:39.26
IV.NRCA.HHE. ML:1.8 0.0005295000000000001 0.1 AML other m 2020-01-25T04:03:39.33
IV.NRCA.HNE. ML:1.8 0.000517 0.1 AML other m 2020-01-25T04:03:39.33
IV.RM33.EHN. ML:1.4 0.00020150000000000002 0.34 AML other m 2020-01-25T04:03:39.65
IV.LNSS.HNE. ML:1.7 0.00039632255 0.5408 AML other m 2020-01-25T04:03:39.55
IV.NRCA.HNN. ML:1.7 0.000384 0.98 AML other m 2020-01-25T04:03:39.44
IV.GAVE.EHN. ML:1.6 0.00020649999999999998 0.28 AML other m 2020-01-25T04:03:41.81
IV.GAVE.EHE. ML:1.6 0.000188 0.18 AML other m 2020-01-25T04:03:44.29
IV.GUMA.HHE. ML:2.0 0.000345 0.24 AML other m 2020-01-25T04:03:46.19
IV.GUMA.HHN. ML:2.0 0.00029299999999999997 0.22 AML other m 2020-01-25T04:03:46.24
IV.GUMA.HNE. ML:2.0 0.00034250000000000003 0.34 AML other m 2020-01-25T04:03:46.32
IV.ARRO.EHE. ML:1.2 0.0000543 0.86 AML other m 2020-01-25T04:03:46.36
IV.ARRO.EHN. ML:1.3 0.000059399999999999994 0.66 AML other m 2020-01-25T04:03:47.65
IV.OFFI.HHE. ML:1.9 0.00024445 0.24 AML other m 2020-01-25T04:03:48.45
IV.OFFI.HHN. ML:1.8 0.0002055 0.38 AML other m 2020-01-25T04:03:48.60
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