Earthquake with magnitude of ML 1.4 on date 28-08-2020 and time 11:57:45 (Italy) in region 4 km W Montereale (AQ)

A magnitude ML 1.4 earthquake occured in region: 4 km W Montereale (AQ), on

  • 28-08-2020 09:57:45 (UTC)
  • 28-08-2020 11:57:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.54, 13.2 at 13 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
Montereale AQ 4 2581 2581
Borbona RI 7 617 3198
Capitignano AQ 8 665 3863
Cagnano Amiterno AQ 9 1369 5232
Posta RI 9 694 5926
Cittareale RI 10 482 6408
Barete AQ 12 737 7145
Amatrice RI 12 2657 9802
Pizzoli AQ 14 4326 14128
Campotosto AQ 14 542 14670
Micigliano RI 16 127 14797
Antrodoco RI 17 2588 17385
Accumoli RI 18 667 18052
Borgo Velino RI 19 972 19024
Scoppito AQ 19 3727 22751
Leonessa RI 20 2435 25186

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NW of L'Aquila (69753 inhabitants)
43 Km W of Teramo (54892 inhabitants)
46 Km E of Terni (111501 inhabitants)
62 Km SE of Foligno (57155 inhabitants)
72 Km NE of Guidonia Montecelio (88673 inhabitants)
72 Km NE of Tivoli (56533 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
82 Km W of Chieti (51815 inhabitants)
83 Km W of Pescara (121014 inhabitants)
91 Km E of Viterbo (67173 inhabitants)
92 Km SE of Perugia (166134 inhabitants)
93 Km NE of Roma (2864731 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 1.4 2020-08-28
09:57:45
42.54 13.21 13 2020-08-28
10:02:41
Sala Sismica INGV-Roma 82404271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-28 09:57:45 ± 0.1
Latitude 42.54 ± 0.00
Longitude 13.21 ± 0.01
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 82404271

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 505
Semi-minor axis of confidence ellipse (meter) 223
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 338
Circular confidence region, given by single value of horizontal uncertainty (meter) 500
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.37232
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 82404271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-28 10:02:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2020-08-28T09:58:06.23 3.0 undecidable manual S -0.22 0
IV.MF5.EHZ. 2020-08-28T09:58:01.13 3.0 undecidable manual S -1.12 0
IV.MC2.EHZ. 2020-08-28T09:58:00.34 0.6 undecidable manual S 358 0.3723 94 1.18 33
IV.FIAM.HHZ. 2020-08-28T09:57:56.55 0.3 undecidable manual S 194 0.2788 96 0.14 70
IV.NRCA.HHZ. 2020-08-28T09:57:56.91 0.3 undecidable manual S 347 0.3013 96 -0.17 69
IV.TERO.HHZ. 2020-08-28T09:57:56.98 0.3 undecidable manual S 74 0.3049 95 -0.2 69
IV.GAVE.EHZ. 2020-08-28T09:57:56.14 0.3 undecidable manual S 304 0.2752 96 -0.16 70
IV.MTRA.EHZ. 2020-08-28T09:57:55.48 0.3 undecidable manual S 33 0.259 97 -0.34 67
IV.MC2.EHZ. 2020-08-28T09:57:53.33 0.3 undecidable manual P 358 0.3723 94 -0.13 69
IV.ARRO.EHZ. 2020-08-28T09:57:52.63 3.0 positive manual P 0.27 0
IV.LNSS.HHZ. 2020-08-28T09:57:52.24 0.3 undecidable manual S 298 0.1367 114 -0.09 74
IV.SMA1.EHZ. 2020-08-28T09:57:52.32 0.3 undecidable manual S 46 0.1322 116 0.13 74
IV.NRCA.HHZ. 2020-08-28T09:57:52.33 0.1 undecidable manual P 347 0.3013 96 0.07 97
IV.TERO.HHZ. 2020-08-28T09:57:52.23 0.1 undecidable manual P 74 0.3049 95 -0.08 95
IV.MTRA.EHZ. 2020-08-28T09:57:51.45 0.1 undecidable manual P 33 0.259 97 -0.08 95
IV.GAVE.EHZ. 2020-08-28T09:57:51.67 0.1 undecidable manual P 304 0.2752 96 -0.13 94
IV.FIAM.HHZ. 2020-08-28T09:57:51.95 0.1 undecidable manual P 194 0.2788 96 0.08 96
IV.LNSS.HHZ. 2020-08-28T09:57:49.62 0.1 positive manual P 298 0.1367 114 0.11 98
IV.SMA1.EHZ. 2020-08-28T09:57:49.74 0.1 undecidable manual P 46 0.1322 116 0.31 95
IV.RM33.EHZ. 2020-08-28T09:57:49.86 0.3 undecidable manual S 167 0.0315 161 -0.33 73
IV.RM33.EHZ. 2020-08-28T09:57:48.36 0.1 undecidable manual P 167 0.0315 161 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHE. ML:1.9 0.0010655 0.3 AML other m 2020-08-28T09:57:50.08
IV.RM33.EHN. ML:1.6 0.0004715 0.74 AML other m 2020-08-28T09:57:50.71
IV.LNSS.HHE. ML:1.8 0.0005325 0.14 AML other m 2020-08-28T09:57:52.44
IV.LNSS.HHN. ML:1.7 0.0003835 0.2 AML other m 2020-08-28T09:57:52.56
IV.SMA1.EHN. ML:1.7 0.00041 0.38 AML other m 2020-08-28T09:57:52.91
IV.SMA1.EHE. ML:2 0.0008135 0.18 AML other m 2020-08-28T09:57:52.76
IV.MTRA.EHN. ML:1.5 0.0001485 0.44 AML other m 2020-08-28T09:57:55.88
IV.MTRA.EHE. ML:1.4 0.000129 0.38 AML other m 2020-08-28T09:57:56.07
IV.GAVE.EHN. ML:1.2 7.365E-5 1.02 AML other m 2020-08-28T09:57:56.42
IV.FIAM.HHE. ML:0.9 3.42E-5 0.32 AML other m 2020-08-28T09:57:56.79
IV.TERO.HHN. ML:1.5 0.000123 0.2 AML other m 2020-08-28T09:57:57.00
IV.TERO.HHE. ML:1.4 0.0001155 0.14 AML other m 2020-08-28T09:57:57.20
IV.NRCA.HHN. ML:1.2 6.785E-5 0.88 AML other m 2020-08-28T09:57:57.30
IV.FIAM.HHN. ML:0.8 2.315E-5 0.52 AML other m 2020-08-28T09:57:57.45
IV.NRCA.HHE. ML:1.3 7.625E-5 0.76 AML other m 2020-08-28T09:57:57.59
IV.GAVE.EHE. ML:1.1 6.125E-5 0.16 AML other m 2020-08-28T09:57:57.89
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