Earthquake with magnitude of ML 1.2 on date 24-08-2020 and time 00:57:22 (Italy) in region 3 km NW Cagnano Amiterno (AQ)

A magnitude ML 1.2 earthquake occured in region: 3 km NW Cagnano Amiterno (AQ), on

  • 23-08-2020 22:57:22 (UTC)
  • 24-08-2020 00:57:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.48, 13.2 at 14 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.

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 3 1369 1369
Montereale AQ 7 2581 3950
Borbona RI 7 617 4567
Barete AQ 7 737 5304
Pizzoli AQ 9 4326 9630
Capitignano AQ 10 665 10295
Posta RI 10 694 10989
Antrodoco RI 12 2588 13577
Micigliano RI 12 127 13704
Scoppito AQ 13 3727 17431
Borgo Velino RI 14 972 18403
Cittareale RI 16 482 18885
Campotosto AQ 17 542 19427
Castel Sant'Angelo RI 17 1308 20735
Amatrice RI 19 2657 23392

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km NW of L'Aquila (69753 inhabitants)
46 Km W of Teramo (54892 inhabitants)
46 Km E of Terni (111501 inhabitants)
66 Km NE of Guidonia Montecelio (88673 inhabitants)
66 Km NE of Tivoli (56533 inhabitants)
67 Km SE of Foligno (57155 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
81 Km W of Chieti (51815 inhabitants)
83 Km W of Pescara (121014 inhabitants)
88 Km NE of Roma (2864731 inhabitants)
90 Km E of Viterbo (67173 inhabitants)
95 Km NE of Velletri (53303 inhabitants)
97 Km SE of Perugia (166134 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.2 2020-08-23
22:57:22
42.48 13.2 14 2020-08-23
23:13:41
Sala Sismica INGV-Roma 82274981
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-23 22:57:22 ± 0.13
Latitude 42.48 ± 0.01
Longitude 13.20 ± 0.01
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 82274981

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 690
Semi-minor axis of confidence ellipse (meter) 472
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 311
Circular confidence region, given by single value of horizontal uncertainty (meter) 690
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 133
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 12
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
Epicentral distance of station farthest from the epicenter (degree) 0.36243
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.4
Num. used stations 11
Type of magnitude ML
Reference to an origin 82274981
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-23 23:13:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.LAV9.HHZ. 2020-08-23T22:57:39.45 3.0 negative manual P 0.35 0
IV.MNTT.EHZ. 2020-08-23T22:57:37.13 3.0 undecidable manual P 1.83 0
IV.NRCA.HHZ. 2020-08-23T22:57:35.39 0.6 undecidable manual S 350 0.3624 96 -0.25 45
IV.TERO.HHZ. 2020-08-23T22:57:34.36 0.6 undecidable manual S 64 0.3301 97 -0.31 45
IV.MOMA.HHZ. 2020-08-23T22:57:32.51 3.0 positive manual P -0.79 0
IV.FIAM.HHZ. 2020-08-23T22:57:31.43 0.6 undecidable manual S 197 0.2176 104 0.03 47
IV.LNSS.HHE. 2020-08-23T22:57:30.06 0.6 undecidable manual S 317 0.1736 111 -0.1 48
IV.SMA1.EHZ. 2020-08-23T22:57:30.80 0.6 undecidable manual S 32 0.1826 109 0.39 45
IV.TERO.HHZ. 2020-08-23T22:57:29.39 0.6 undecidable manual P 64 0.3301 97 -0.09 46
IV.NRCA.HHZ. 2020-08-23T22:57:29.90 0.6 negative manual P 350 0.3624 96 -0.14 46
IV.FIAM.HHZ. 2020-08-23T22:57:27.72 1.0 negative manual P 197 0.2176 104 0.13 24
IV.LNSS.HHE. 2020-08-23T22:57:27.00 0.3 undecidable manual P 317 0.1736 111 0.12 72
IV.SMA1.EHZ. 2020-08-23T22:57:27.20 0.1 positive manual P 32 0.1826 109 0.19 94
IV.RM33.EHZ. 2020-08-23T22:57:26.84 0.6 undecidable manual S 16 0.0333 162 -0.35 47
IV.RM33.EHZ. 2020-08-23T22:57:25.22 0.1 undecidable manual P 16 0.0333 162 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHN. ML:1 0.0001258286 0.0768 AML other m 2020-08-23T22:57:27.28
IV.RM33.HNN. ML:1 0.00012695849 0.0512 AML other m 2020-08-23T22:57:27.01
IV.RM33.EHE. ML:1.1 0.00016845805 0.0768 AML other m 2020-08-23T22:57:27.15
IV.RM33.HNE. ML:1.2 0.000183848085 0.0896 AML other m 2020-08-23T22:57:27.10
IV.FIAM.HNN. ML:1.3 0.00012096375 0.512 AML other m 2020-08-23T22:57:37.18
IV.FIAM.HHN. ML:0.4 1.348489E-5 0.6144 AML other m 2020-08-23T22:57:34.14
IV.FIAM.HHE. ML:0.4 1.63112675E-5 0.1792 AML other m 2020-08-23T22:57:31.57
IV.FIAM.HNE. ML:2.4 0.00143141615 1.1136 AML other m 2020-08-23T22:57:37.41
IV.TERO.HNE. ML:1.4 8.3880385E-5 0.4096 AML other m 2020-08-23T22:57:30.58
IV.TERO.HNN. ML:1.5 0.000127443365 0.832 AML other m 2020-08-23T22:57:44.04
IV.NRCA.HNN. ML:1.8 0.000195018 0.7296 AML other m 2020-08-23T22:57:36.49
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download