Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 18-12-2021 and time 16:39:12 (UTC) in region 7 km SE Capitignano (AQ)

A magnitude ML 1.3 earthquake occured in region: 7 km SE Capitignano (AQ), on

  • 18-12-2021 16:39:12 (UTC)
  • 18-12-2021 17:39:12 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.4880, 13.3730 at 11 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 7 665 665
Campotosto AQ 8 542 1207
Barete AQ 9 737 1944
Pizzoli AQ 9 4326 6270
Crognaleto TE 11 1297 7567
Montereale AQ 11 2581 10148
Cagnano Amiterno AQ 13 1369 11517
L'Aquila AQ 15 69753 81270
Fano Adriano TE 15 296 81566
Pietracamela TE 15 271 81837
Scoppito AQ 16 3727 85564
Amatrice RI 17 2657 88221
Cortino TE 19 656 88877
Borbona RI 20 617 89494

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km N of L'Aquila (69753 inhabitants)
33 Km SW of Teramo (54892 inhabitants)
60 Km E of Terni (111501 inhabitants)
64 Km W of Montesilvano (53738 inhabitants)
67 Km W of Chieti (51815 inhabitants)
69 Km W of Pescara (121014 inhabitants)
75 Km NE of Tivoli (56533 inhabitants)
76 Km SE of Foligno (57155 inhabitants)
76 Km NE of Guidonia Montecelio (88673 inhabitants)
99 Km NE of Roma (2864731 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 2021-12-18
16:39:12		 42.4882 13.3732 11 2022-03-30
13:04:23		 Bollettino Sismico Italiano INGV 98845611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-18 16:39:12 ± 0.04
Latitude 42.4882 ± 0.0027
Longitude 13.3732 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 98845611

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 300
Semi-minor axis of confidence ellipse (meter) 230
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 233
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 59
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) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.05486
Epicentral distance of station farthest from the epicenter (degree) 0.61604
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 98845611
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-12-23 10:21:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2021-12-18T16:39:33.54 0.3 undecidable manual S 348 68.376 50 0.22 67
IV.NRCA.HHZ. 2021-12-18T16:39:26.80 0.3 undecidable manual S 331 43.7229 50 0.05 73
IV.VCEL.EHZ. 2021-12-18T16:39:25.93 0.3 undecidable manual S 105 39.627 50 0.27 70
IV.CSP1.EHZ. 2021-12-18T16:39:24.63 0.6 negative manual P 348 68.376 50 0.1 46
IV.FIAM.HNN. 2021-12-18T16:39:23.66 0.3 undecidable manual S 221 32.1456 50 0 75
IV.FAGN.HHE. 2021-12-18T16:39:23.41 0.3 undecidable manual S 145 30.1476 50 0.3 71
IV.LNSS.HHZ. 2021-12-18T16:39:22.94 0.3 undecidable manual S 295 30.0477 50 -0.15 73
IV.MTRA.EHE. 2021-12-18T16:39:22.57 0.3 undecidable manual S 4 29.8479 50 -0.47 68
IV.TERO.HHE. 2021-12-18T16:39:21.50 0.3 undecidable manual S 52 24.0537 50 0.01 76
IV.NRCA.HHZ. 2021-12-18T16:39:20.65 0.1 undecidable manual P 331 43.7229 50 -0.09 96
IV.VCEL.EHZ. 2021-12-18T16:39:20.35 0.3 undecidable manual P 105 39.627 50 0.24 70
IV.SMA1.EHZ. 2021-12-18T16:39:19.29 0.3 undecidable manual S 349 16.0728 124 0.05 76
IV.GIGS.HHN. 2021-12-18T16:39:19.07 0.3 undecidable manual S 103 16.7721 123 -0.37 71
IV.RM33.EHZ. 2021-12-18T16:39:18.52 0.3 undecidable manual S 280 13.1757 129 0.1 76
MN.AQU.HNN. 2021-12-18T16:39:18.78 0.3 undecidable manual S 170 15.0738 125 -0.17 75
IV.LNSS.HHZ. 2021-12-18T16:39:18.56 0.1 undecidable manual P 295 30.0477 50 -0.07 99
IV.MTRA.EHE. 2021-12-18T16:39:18.42 0.6 undecidable manual P 4 29.8479 50 -0.18 48
IV.FIAM.HNN. 2021-12-18T16:39:18.75 0.1 undecidable manual P 221 32.1456 50 -0.21 96
IV.FAGN.HHE. 2021-12-18T16:39:18.79 0.3 undecidable manual P 145 30.1476 50 0.15 73
IV.TERO.HHE. 2021-12-18T16:39:17.60 0.1 undecidable manual P 52 24.0537 50 -0.1 99
IV.RM33.EHZ. 2021-12-18T16:39:16.12 0.1 undecidable manual P 280 13.1757 129 0.19 99
MN.AQU.HNN. 2021-12-18T16:39:16.13 0.3 undecidable manual P 170 15.0738 125 -0.11 75
IV.SMA1.EHZ. 2021-12-18T16:39:16.54 0.1 undecidable manual P 349 16.0728 124 0.14 100
IV.CAMP.HHZ. 2021-12-18T16:39:16.89 0.3 undecidable manual S 29 6.0939 151 0.09 77
IV.GIGS.HHN. 2021-12-18T16:39:16.39 0.1 undecidable manual P 103 16.7721 123 -0.13 100
IV.CAMP.HHZ. 2021-12-18T16:39:15.17 0.3 undecidable manual P 29 6.0939 151 0.18 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CAMP.HHN. ML:1.1 0.00018099999999999998 0.4 AML other m 2021-12-18T16:39:17.03
IV.CAMP.HHE. ML:0.9 0.00013000000000000002 0.42 AML other m 2021-12-18T16:39:17.68
IV.RM33.EHN. ML:1.4 0.00028900000000000003 0.3 AML other m 2021-12-18T16:39:18.68
IV.RM33.EHE. ML:1.4 0.00023349999999999998 0.34 AML other m 2021-12-18T16:39:18.62
IV.SMA1.EHE. ML:1.2 0.00012405 0.46 AML other m 2021-12-18T16:39:20.75
IV.LNSS.HHN. ML:1.2 0.0000797 0.68 AML other m 2021-12-18T16:39:22.36
IV.SMA1.EHN. ML:1.1 0.00011185000000000001 1.46 AML other m 2021-12-18T16:39:22.92
IV.LNSS.HHE. ML:1.2 0.00008305 1.18 AML other m 2021-12-18T16:39:23.90
IV.FAGN.HHE. ML:1.5 0.000145 0.48 AML other m 2021-12-18T16:39:26.71
IV.FAGN.HHN. ML:1.4 0.000129 0.62 AML other m 2021-12-18T16:39:27.98
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