Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 04-03-2021 and time 16:40:25 (UTC) in region 1 km W Capitignano (AQ)

A magnitude ML 1.3 earthquake occured in region: 1 km W Capitignano (AQ), on

  • 04-03-2021 16:40:25 (UTC)
  • 04-03-2021 17:40:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.5230, 13.2960 at 13 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
Capitignano AQ 1 665 665
Montereale AQ 4 2581 3246
Campotosto AQ 7 542 3788
Barete AQ 8 737 4525
Cagnano Amiterno AQ 9 1369 5894
Pizzoli AQ 10 4326 10220
Amatrice RI 12 2657 12877
Borbona RI 13 617 13494
Cittareale RI 15 482 13976
Crognaleto TE 15 1297 15273
Posta RI 16 694 15967
Scoppito AQ 17 3727 19694
Accumoli RI 20 667 20361

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km NW of L'Aquila (69753 inhabitants)
37 Km W of Teramo (54892 inhabitants)
53 Km E of Terni (111501 inhabitants)
68 Km SE of Foligno (57155 inhabitants)
70 Km W of Montesilvano (53738 inhabitants)
74 Km W of Chieti (51815 inhabitants)
74 Km NE of Tivoli (56533 inhabitants)
75 Km NE of Guidonia Montecelio (88673 inhabitants)
76 Km W of Pescara (121014 inhabitants)
97 Km NE of Roma (2864731 inhabitants)
98 Km E of Viterbo (67173 inhabitants)
99 Km SE 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 1.3 2021-03-04
16:40:25		 42.5227 13.2957 13 2021-07-12
16:55:06		 Bollettino Sismico Italiano INGV 89089061
Reviewed
Rev100 		ML 1.5 2021-03-04
16:40:25		 42.5212 13.2958 12 2021-03-04
16:48:08		 Sala Sismica INGV-Roma 87724211
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-04 16:40:25 ± 0.06
Latitude 42.5227 ± 0.0027
Longitude 13.2957 ± 0.0037
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89089061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 320
Semi-minor axis of confidence ellipse (meter) 40
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 356
Circular confidence region, given by single value of horizontal uncertainty (meter) 320.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 98
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.06115
Epicentral distance of station farthest from the epicenter (degree) 0.48024
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:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 87724211
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-04 16:48:08

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 13
Type of magnitude ML
Reference to an origin 89089061
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-14 10:16:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MC2.EHZ. 2021-03-04T16:40:40.19 0.3 undecidable manual S 349 44.0226 94 0.37 67
IV.MMO1.HNE. 2021-03-04T16:40:39.49 0.3 undecidable manual S 3 41.8248 94 0.23 70
IV.GAVE.EHZ. 2021-03-04T16:40:38.04 0.3 undecidable manual S 300 37.8288 95 -0.14 71
IV.FIAM.HNN. 2021-03-04T16:40:36.80 0.3 undecidable manual S 207 31.8459 96 0.21 69
IV.TERO.HHZ. 2021-03-04T16:40:35.19 0.3 undecidable manual S 66 27.5502 98 -0.26 69
IV.MF5.EHZ. 2021-03-04T16:40:35.68 0.3 undecidable manual P 14 53.3022 93 0.43 65
IV.GIGS.HHN. 2021-03-04T16:40:34.23 0.3 undecidable manual S 109 23.9538 101 -0.28 70
IV.MTRA.HNE. 2021-03-04T16:40:34.98 0.3 undecidable manual S 18 27.2505 98 -0.39 67
IV.MMO1.HNE. 2021-03-04T16:40:33.46 0.3 undecidable manual P 3 41.8248 94 -0.03 71
IV.ARRO.EHZ. 2021-03-04T16:40:33.60 0.3 undecidable manual P 278 43.7229 94 -0.18 70
IV.LNSS.HHZ. 2021-03-04T16:40:33.95 0.6 undecidable manual S 293 22.6551 102 -0.23 48
IV.MC2.EHZ. 2021-03-04T16:40:33.87 0.6 undecidable manual P 349 44.0226 94 0.05 48
IV.FIAM.HNN. 2021-03-04T16:40:32.07 0.6 undecidable manual P 207 31.8459 96 0.12 47
IV.GAVE.EHZ. 2021-03-04T16:40:32.75 0.1 undecidable manual P 300 37.8288 95 -0.12 95
IV.SMA1.EHZ. 2021-03-04T16:40:31.76 0.3 undecidable manual S 15 12.3765 123 0.14 75
IV.MTRA.HNE. 2021-03-04T16:40:31.09 0.1 undecidable manual P 18 27.2505 98 -0.16 95
IV.T1299.HNZ. 2021-03-04T16:40:31.54 0.3 undecidable manual S 355 12.3765 123 -0.09 74
IV.TERO.HHZ. 2021-03-04T16:40:31.16 0.1 undecidable manual P 66 27.5502 98 -0.13 95
IV.CAMP.HHZ. 2021-03-04T16:40:31.04 0.3 undecidable manual S 81 9.3795 134 0.05 76
IV.GIGS.HHN. 2021-03-04T16:40:30.61 0.3 undecidable manual P 109 23.9538 101 -0.14 72
IV.RM33.EHZ. 2021-03-04T16:40:30.32 0.6 undecidable manual S 257 6.7932 145 -0.23 49
IV.LNSS.HHZ. 2021-03-04T16:40:30.57 0.1 positive manual P 293 22.6551 102 0.01 99
IV.SMA1.EHZ. 2021-03-04T16:40:29.29 0.1 negative manual P 15 12.3765 123 0.21 98
IV.T1299.HNZ. 2021-03-04T16:40:29.08 0.3 undecidable manual P 355 12.3765 123 -0.01 75
IV.RM33.EHZ. 2021-03-04T16:40:28.56 0.1 positive manual P 257 6.7932 145 0.09 100
IV.CAMP.HHZ. 2021-03-04T16:40:28.94 0.1 undecidable manual P 81 9.3795 134 0.22 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHE. ML:1.6 0.00043757115000000004 0.1408 AML other m 2021-03-04T16:40:30.57
IV.RM33.EHN. ML:1.4 0.00028997055 0.1792 AML other m 2021-03-04T16:40:30.48
IV.TERO.HHN. ML:1.0 0.000046697105000000004 0.064 AML other m 2021-03-04T16:40:35.28
IV.TERO.HHE. ML:1.0 0.000047072745 0.1152 AML other m 2021-03-04T16:40:36.20
IV.RM33.HNE. ML:1.6 0.00046576885 0.1664 AML other m 2021-03-04T16:40:30.56
IV.RM33.HNN. ML:1.4 0.00029084135 0.192 AML other m 2021-03-04T16:40:30.48
IV.TERO.HNE. ML:1.5 0.00014932200000000002 0.8448 AML other m 2021-03-04T16:40:35.79
IV.TERO.HNN. ML:1.5 0.00016164115000000002 0.9984 AML other m 2021-03-04T16:40:38.12
IV.GAVE.HNN. ML:1.8 0.00020243840000000002 0.8192 AML other m 2021-03-04T16:40:42.46
IV.GAVE.EHE. ML:0.8 0.000027082655 0.1408 AML other m 2021-03-04T16:40:38.86
IV.GAVE.EHN. ML:0.9 0.000031711694999999996 0.1152 AML other m 2021-03-04T16:40:38.81
IV.MF5.EHN. ML:1.2 0.000037696175 0.4992 AML other m 2021-03-04T16:40:43.72
IV.MF5.EHE. ML:1.1 0.000029653015 0.64 AML other m 2021-03-04T16:40:43.64
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