Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 04-01-2021 and time 07:13:17 (Italy) in region 4 km NW Crognaleto (TE)

A magnitude ML 1.0 earthquake occured in region: 4 km NW Crognaleto (TE), on

  • 04-01-2021 06:13:17 (UTC)
  • 04-01-2021 07:13:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.5720, 13.4430 at 17 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
Crognaleto TE 4 1297 1297
Campotosto AQ 6 542 1839
Cortino TE 8 656 2495
Fano Adriano TE 8 296 2791
Pietracamela TE 11 271 3062
Capitignano AQ 13 665 3727
Amatrice RI 14 2657 6384
Rocca Santa Maria TE 15 537 6921
Montorio al Vomano TE 16 8218 15139
Montereale AQ 17 2581 17720
Tossicia TE 17 1406 19126
Barete AQ 19 737 19863
Valle Castellana TE 19 977 20840
Pizzoli AQ 19 4326 25166
Isola del Gran Sasso d'Italia TE 20 4773 29939
Colledara TE 20 2179 32118
Torricella Sicura TE 20 2641 34759

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km W of Teramo (54892 inhabitants)
25 Km N of L'Aquila (69753 inhabitants)
58 Km W of Montesilvano (53738 inhabitants)
64 Km W of Pescara (121014 inhabitants)
64 Km W of Chieti (51815 inhabitants)
65 Km E of Terni (111501 inhabitants)
74 Km SE of Foligno (57155 inhabitants)
86 Km NE of Tivoli (56533 inhabitants)
87 Km NE of Guidonia Montecelio (88673 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 1.0 2021-01-04
06:13:17		 42.5718 13.443 17 2021-07-12
16:54:55		 Bollettino Sismico Italiano INGV 86263351
Reviewed
Rev100 		ML 1.2 2021-01-04
06:13:18		 42.5675 13.4455 17 2021-01-04
06:29:08		 Sala Sismica INGV-Roma 86005871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-04 06:13:17 ± 0.06
Latitude 42.5718 ± 0.0036
Longitude 13.4430 ± 0.0049
Depth (km) 17 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86263351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 360
Semi-minor axis of confidence ellipse (meter) 308
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 52
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) 74
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.04407
Epicentral distance of station farthest from the epicenter (degree) 0.54859
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 86263351
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-15 09:31:00

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 86005871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-04 06:29:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2021-01-04T06:13:36.91 0.3 undecidable manual S 342 60.8946 97 0.11 66
IV.VCEL.EHN. 2021-01-04T06:13:31.13 0.6 undecidable manual S 121 38.0286 104 0.33 44
IV.NRCA.HHZ. 2021-01-04T06:13:30.99 0.3 undecidable manual S 317 39.5271 103 -0.2 68
IV.MMO1.EHN. 2021-01-04T06:13:30.81 0.6 undecidable manual S 345 37.5291 104 0.13 46
IV.LNSS.HHZ. 2021-01-04T06:13:29.53 0.3 undecidable manual S 276 33.0447 107 0 71
IV.CSP1.EHZ. 2021-01-04T06:13:28.64 0.1 undecidable manual P 342 60.8946 97 -0.21 87
IV.MF5.EHZ. 2021-01-04T06:13:26.32 0.6 undecidable manual P 2 46.1205 101 -0.29 44
IV.MTRA.EHZ. 2021-01-04T06:13:26.39 0.3 undecidable manual S 350 20.868 120 -0.12 71
IV.TERO.HHZ. 2021-01-04T06:13:25.20 0.3 undecidable manual S 67 14.2746 133 0.1 73
IV.MMO1.EHN. 2021-01-04T06:13:25.33 1.0 undecidable manual P 345 37.5291 104 0.01 24
IV.T1299.EHE. 2021-01-04T06:13:25.48 0.3 undecidable manual S 298 14.874 132 0.27 70
IV.GIGS.HHE. 2021-01-04T06:13:25.44 0.3 undecidable manual S 141 16.872 127 -0.2 70
IV.VCEL.EHN. 2021-01-04T06:13:25.33 0.3 undecidable manual P 121 38.0286 104 -0.06 70
IV.NRCA.HHZ. 2021-01-04T06:13:25.53 0.1 undecidable manual P 317 39.5271 103 -0.08 93
IV.LNSS.HHZ. 2021-01-04T06:13:24.67 0.1 undecidable manual P 276 33.0447 107 0.02 95
IV.MTRA.EHZ. 2021-01-04T06:13:23.05 0.1 undecidable manual P 350 20.868 120 0.14 95
IV.CAMP.HHE. 2021-01-04T06:13:23.60 0.3 undecidable manual S 215 4.8951 162 -0.12 72
IV.TERO.HHZ. 2021-01-04T06:13:22.11 0.1 undecidable manual P 67 14.2746 133 0.01 99
IV.T1299.EHE. 2021-01-04T06:13:22.30 0.1 undecidable manual P 298 14.874 132 0.14 96
IV.GIGS.HHE. 2021-01-04T06:13:22.47 0.1 undecidable manual P 141 16.872 127 0.06 97
IV.CAMP.HHE. 2021-01-04T06:13:21.34 0.1 undecidable manual P 215 4.8951 162 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TERO.HNE. ML:1.0 0.000078882625 0.4 AML other m 2021-01-04T06:13:25.18
IV.MTRA.HNN. ML:1.3 0.000102962115 0.6112 AML other m 2021-01-04T06:13:25.25
IV.TERO.HHN. ML:0.7 0.000037291804999999995 0.0384 AML other m 2021-01-04T06:13:25.59
IV.TERO.HHE. ML:1.0 0.000076373255 0.0576 AML other m 2021-01-04T06:13:25.64
IV.TERO.HNN. ML:1.4 0.00017689998 0.608 AML other m 2021-01-04T06:13:27.13
IV.MTRA.EHN. ML:0.9 0.000045606305 0.2208 AML other m 2021-01-04T06:13:27.45
IV.MTRA.EHE. ML:0.8 0.00004216248 0.1184 AML other m 2021-01-04T06:13:27.60
IV.MTRA.HNE. ML:1.1 0.00007876661 0.4672 AML other m 2021-01-04T06:13:34.35
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