Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 13-10-2021 and time 02:45:21 (UTC) in region 4 km S Capitignano (AQ)

A magnitude ML 1.5 earthquake occured in region: 4 km S Capitignano (AQ), on

  • 13-10-2021 02:45:21 (UTC)
  • 13-10-2021 04:45:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.4900, 13.2900 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 4 665 665
Barete AQ 4 737 1402
Montereale AQ 5 2581 3983
Pizzoli AQ 6 4326 8309
Cagnano Amiterno AQ 6 1369 9678
Campotosto AQ 10 542 10220
Borbona RI 13 617 10837
Scoppito AQ 13 3727 14564
Amatrice RI 16 2657 17221
Posta RI 16 694 17915
Crognaleto TE 17 1297 19212
L'Aquila AQ 18 69753 88965
Cittareale RI 18 482 89447
Antrodoco RI 19 2588 92035
Micigliano RI 20 127 92162

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km NW of L'Aquila (69753 inhabitants)
39 Km W of Teramo (54892 inhabitants)
53 Km E of Terni (111501 inhabitants)
71 Km SE of Foligno (57155 inhabitants)
71 Km W of Montesilvano (53738 inhabitants)
71 Km NE of Tivoli (56533 inhabitants)
72 Km NE of Guidonia Montecelio (88673 inhabitants)
74 Km W of Chieti (51815 inhabitants)
76 Km W of Pescara (121014 inhabitants)
94 Km NE of Roma (2864731 inhabitants)
98 Km E of Viterbo (67173 inhabitants)
99 Km NE of Velletri (53303 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 1.5 2021-10-13
02:45:21		 42.4905 13.2903 13 2022-03-30
13:04:28		 Bollettino Sismico Italiano INGV 99545831
Reviewed
Rev100 		ML 1.5 2021-10-13
02:45:20		 42.491 13.2873 14 2021-10-13
02:51:52		 Sala Sismica INGV-Roma 96483961
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-13 02:45:21 ± 0.05
Latitude 42.4905 ± 0.0027
Longitude 13.2903 ± 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 99545831

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 312
Semi-minor axis of confidence ellipse (meter) 142
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 225
Circular confidence region, given by single value of horizontal uncertainty (meter) 310.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 35
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.60434
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 99545831
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-01-10 16:44:41

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 96483961
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-13 02:51:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VCRE.HHZ. 2021-10-13T02:46:17.26 3.0 undecidable manual Sn 0.78 0
OT.OT17.EHZ. 2021-10-13T02:46:12.30 3.0 undecidable manual Sn -0.74 0
IV.TST02.HHZ. 2021-10-13T02:45:41.55 3.0 positive manual P 2.11 0
IV.MMO1.EHZ. 2021-10-13T02:45:35.83 0.3 undecidable manual S 4 45.4212 93 0.21 70
IV.NRCA.HHZ. 2021-10-13T02:45:34.31 0.6 undecidable manual S 339 40.626 93 -0.04 49
IV.GAVE.EHZ. 2021-10-13T02:45:33.82 0.3 undecidable manual S 305 39.3273 93 -0.17 71
IV.GUMA.HHZ. 2021-10-13T02:45:32.64 0.3 undecidable manual P 3 63.5919 92 0.4 65
IV.FAGN.HHZ. 2021-10-13T02:45:32.96 1.0 undecidable manual S 136 34.6431 94 0.22 24
IV.CSP1.EHZ. 2021-10-13T02:45:32.72 0.1 undecidable manual P 354 67.0773 92 -0.06 92
IV.MF5.EHZ. 2021-10-13T02:45:31.60 0.3 undecidable manual P 14 56.8986 92 0.39 66
IV.MTRA.EHZ. 2021-10-13T02:45:31.40 0.3 undecidable manual S 16 30.747 95 -0.31 70
IV.FDMO.HHZ. 2021-10-13T02:45:31.99 0.1 undecidable manual P 345 62.7927 92 -0.13 91
IV.FIAM.HHZ. 2021-10-13T02:45:30.79 0.3 undecidable manual S 210 28.4493 96 -0.31 71
IV.TERO.HHZ. 2021-10-13T02:45:30.94 0.3 undecidable manual S 60 29.5482 95 -0.44 68
IV.T0110.HHZ. 2021-10-13T02:45:30.11 0.3 undecidable manual P 126 49.2174 92 0.07 72
IV.MMO1.EHZ. 2021-10-13T02:45:29.34 0.1 undecidable manual P 4 45.4212 93 -0.11 95
IV.LNSS.HHZ. 2021-10-13T02:45:29.86 0.3 undecidable manual S 301 23.9538 98 -0.04 76
IV.VCEL.EHZ. 2021-10-13T02:45:29.82 0.3 undecidable manual P 103 46.3203 93 0.24 70
IV.GIGS.HHN. 2021-10-13T02:45:29.59 0.3 undecidable manual S 100 23.4543 98 -0.19 73
IV.ARRO.EHZ. 2021-10-13T02:45:29.09 0.3 undecidable manual P 283 44.0226 93 -0.14 71
IV.FAGN.HHZ. 2021-10-13T02:45:28.06 0.3 undecidable manual P 136 34.6431 94 0.27 71
MN.AQU.HNN. 2021-10-13T02:45:28.25 0.6 undecidable manual S 148 17.7711 105 -0.04 51
IV.GAVE.EHZ. 2021-10-13T02:45:28.38 0.1 undecidable manual P 305 39.3273 93 -0.13 96
IV.SMA1.EHZ. 2021-10-13T02:45:28.04 0.3 undecidable manual S 13 15.9729 109 0.22 74
IV.NRCA.HHZ. 2021-10-13T02:45:28.59 0.1 positive manual P 339 40.626 93 -0.13 95
IV.T1299.HNN. 2021-10-13T02:45:27.94 0.6 undecidable manual S 358 15.9729 109 0.12 50
IV.MTRA.EHZ. 2021-10-13T02:45:27.00 0.1 undecidable manual P 16 30.747 95 -0.2 95
IV.CAMP.HHE. 2021-10-13T02:45:26.63 0.6 undecidable manual S 63 10.9779 126 0 51
IV.LNSS.HHZ. 2021-10-13T02:45:26.19 0.1 undecidable manual P 301 23.9538 98 0.04 100
IV.FIAM.HHZ. 2021-10-13T02:45:26.83 0.3 undecidable manual P 210 28.4493 96 -0.01 75
IV.TERO.HHZ. 2021-10-13T02:45:26.92 0.3 undecidable manual P 60 29.5482 95 -0.09 73
IV.GIGS.HHN. 2021-10-13T02:45:25.87 0.3 undecidable manual P 100 23.4543 98 -0.21 72
IV.RM33.EHZ. 2021-10-13T02:45:25.67 0.3 undecidable manual S 288 6.4935 145 -0.13 78
MN.AQU.HNN. 2021-10-13T02:45:25.30 0.3 undecidable manual P 148 17.7711 105 0.08 75
IV.SMA1.EHZ. 2021-10-13T02:45:25.17 0.1 undecidable manual P 13 15.9729 109 0.22 98
IV.T1299.HNN. 2021-10-13T02:45:25.14 0.1 undecidable manual P 358 15.9729 109 0.19 99
IV.CAMP.HHE. 2021-10-13T02:45:24.47 0.1 undecidable manual P 63 10.9779 126 0.21 99
IV.RM33.EHZ. 2021-10-13T02:45:23.99 0.1 negative manual P 288 6.4935 145 0.21 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHE. ML:1.2 0.00022549999999999998 1.72 AML other m 2021-10-13T02:45:25.94
IV.RM33.EHN. ML:1.4 0.00030600000000000007 1.72 AML other m 2021-10-13T02:45:26.02
IV.SMA1.EHN. ML:1.9 0.0007199999999999999 0.34 AML other m 2021-10-13T02:45:28.70
IV.SMA1.EHE. ML:1.7 0.000373 1.34 AML other m 2021-10-13T02:45:28.19
IV.LNSS.HHE. ML:1.6 0.0002595 0.16 AML other m 2021-10-13T02:45:30.33
IV.LNSS.HHN. ML:1.5 0.0002045 0.82 AML other m 2021-10-13T02:45:30.28
IV.FIAM.HHE. ML:0.7 0.00002395 0.68 AML other m 2021-10-13T02:45:31.60
IV.MTRA.EHE. ML:2.0 0.00041749999999999996 0.16 AML other m 2021-10-13T02:45:31.86
IV.MTRA.HNE. ML:2.0 0.0004205 0.16 AML other m 2021-10-13T02:45:31.86
IV.MTRA.HNN. ML:1.7 0.0002465 0.2 AML other m 2021-10-13T02:45:31.80
IV.MTRA.EHN. ML:1.7 0.0002515 0.2 AML other m 2021-10-13T02:45:31.80
IV.FIAM.HHN. ML:0.7 0.00002385 1.2 AML other m 2021-10-13T02:45:33.99
IV.GAVE.EHE. ML:1.4 0.00007939999999999999 0.14 AML other m 2021-10-13T02:45:34.06
IV.GAVE.EHN. ML:1.3 0.0000672 1.42 AML other m 2021-10-13T02:45:34.16
IV.FAGN.HHN. ML:1.4 0.0000974 0.44 AML other m 2021-10-13T02:45:35.39
IV.ARRO.EHE. ML:1.0 0.00002785 0.22 AML other m 2021-10-13T02:45:35.39
IV.NRCA.HHE. ML:1.7 0.00016399999999999997 0.14 AML other m 2021-10-13T02:45:35.50
IV.NRCA.HHN. ML:1.6 0.0001265 0.1 AML other m 2021-10-13T02:45:35.96
IV.FAGN.HHE. ML:1.5 0.00013450000000000002 0.3 AML other m 2021-10-13T02:45:37.38
IV.ARRO.EHN. ML:0.9 0.0000258 0.54 AML other m 2021-10-13T02:45:39.29
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