Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 27-12-2023 and time 14:38:45 (UTC) in region 2 km SW Cagnano Amiterno (AQ)

A magnitude ML 1.0 earthquake occured in region: 2 km SW Cagnano Amiterno (AQ), on

  • 27-12-2023 14:38:45 (UTC)
  • 27-12-2023 15:38:45 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.4440, 13.2130 at 11 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Cagnano Amiterno AQ 2 1369 1369
Barete AQ 6 737 2106
Pizzoli AQ 7 4326 6432
Scoppito AQ 9 3727 10159
Montereale AQ 9 2581 12740
Borbona RI 10 617 13357
Capitignano AQ 11 665 14022
Antrodoco RI 11 2588 16610
Micigliano RI 13 127 16737
Posta RI 13 694 17431
Borgo Velino RI 13 972 18403
Castel Sant'Angelo RI 16 1308 19711
Campotosto AQ 18 542 20253
Tornimparte AQ 18 3187 23440
L'Aquila AQ 18 69753 93193
Cittareale RI 20 482 93675
Lucoli AQ 20 1011 94686

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km NW of L'Aquila (69753 inhabitants)
47 Km SW of Teramo (54892 inhabitants)
48 Km E of Terni (111501 inhabitants)
63 Km NE of Tivoli (56533 inhabitants)
64 Km NE of Guidonia Montecelio (88673 inhabitants)
71 Km SE of Foligno (57155 inhabitants)
77 Km W of Montesilvano (53738 inhabitants)
79 Km W of Chieti (51815 inhabitants)
82 Km W of Pescara (121014 inhabitants)
86 Km NE of Roma (2864731 inhabitants)
91 Km E of Viterbo (67173 inhabitants)
92 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
Reviewed
Rev100 		ML 1.0 2023-12-27
14:38:45		 42.4443 13.2127 11 2023-12-27
14:52:20		 Sala Sismica INGV-Roma 124301861
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-27 14:38:45 ± 0.1
Latitude 42.4443 ± 0.0054
Longitude 13.2127 ± 0.0085
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 124301861

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 647
Semi-minor axis of confidence ellipse (meter) 550
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 79
Circular confidence region, given by single value of horizontal uncertainty (meter) 650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 119
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.06475
Epicentral distance of station farthest from the epicenter (degree) 0.33904
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 124301861
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-27 14:52:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2023-12-27T14:38:57.94 0.6 undecidable manual S 58 37.629 50 -0.17 46
IV.SMA1.EHE. 2023-12-27T14:38:54.47 0.6 undecidable manual S 26 22.9548 50 0.27 49
IV.CAMP.HHE. 2023-12-27T14:38:53.32 0.6 undecidable manual S 58 18.9699 50 0.18 50
IV.LNSS.HHZ. 2023-12-27T14:38:53.67 0.3 undecidable manual S 321 22.5552 50 -0.41 69
IV.FIAM.HHZ. 2023-12-27T14:38:53.99 0.6 undecidable manual S 202 21.0678 50 0.29 48
IV.TERO.HHZ. 2023-12-27T14:38:52.77 1.0 undecidable manual P 58 37.629 50 -0.04 24
MN.AQU.HNE. 2023-12-27T14:38:52.73 0.3 undecidable manual S 122 18.6702 50 -0.32 70
IV.RM33.EHZ. 2023-12-27T14:38:50.11 0.3 undecidable manual S 1 7.1928 147 0.01 77
IV.CAMP.HHE. 2023-12-27T14:38:50.08 0.1 undecidable manual P 58 18.9699 50 0.14 100
IV.LNSS.HHZ. 2023-12-27T14:38:50.27 0.1 undecidable manual P 321 22.5552 50 -0.22 96
IV.FIAM.HHZ. 2023-12-27T14:38:50.64 0.6 negative manual P 202 21.0678 50 0.38 47
IV.SMA1.EHE. 2023-12-27T14:38:50.73 0.1 undecidable manual P 26 22.9548 50 0.18 99
MN.AQU.HNE. 2023-12-27T14:38:49.64 0.3 undecidable manual P 122 18.6702 50 -0.25 72
IV.RM33.EHZ. 2023-12-27T14:38:48.45 0.3 undecidable manual P 1 7.1928 147 0.26 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHN. ML:1.1 0.0001965 0.96 AML other m 2023-12-27T14:38:50.18
IV.RM33.EHE. ML:1.0 0.0001325 1.02 AML other m 2023-12-27T14:38:50.39
IV.FIAM.HHN. ML:0.6 0.00002985 0.26 AML other m 2023-12-27T14:38:54.19
IV.LNSS.HHE. ML:1.4 0.0001655 1.1 AML other m 2023-12-27T14:38:54.84
IV.LNSS.HHN. ML:1.3 0.00011949999999999999 0.84 AML other m 2023-12-27T14:38:54.46
IV.FIAM.HHE. ML:0.8 0.0000381 1.04 AML other m 2023-12-27T14:38:54.59
IV.TERO.HHN. ML:0.8 0.000023800000000000003 1.16 AML other m 2023-12-27T14:38:59.62
IV.TERO.HHE. ML:0.8 0.000024550000000000004 0.68 AML other m 2023-12-27T14:38:59.12
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