Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 27-11-2020 and time 00:47:09 (Italy) in region 2 km S Montereale (AQ)

A magnitude ML 1.3 earthquake occured in region: 2 km S Montereale (AQ), on

  • 26-11-2020 23:47:09 (UTC)
  • 27-11-2020 00:47:09 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.51, 13.24 at 16 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
Montereale AQ 2 2581 2581
Capitignano AQ 5 665 3246
Cagnano Amiterno AQ 5 1369 4615
Barete AQ 7 737 5352
Pizzoli AQ 9 4326 9678
Borbona RI 9 617 10295
Campotosto AQ 12 542 10837
Posta RI 12 694 11531
Cittareale RI 14 482 12013
Amatrice RI 14 2657 14670
Scoppito AQ 15 3727 18397
Micigliano RI 17 127 18524
Antrodoco RI 17 2588 21112
Borgo Velino RI 19 972 22084

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km NW of L'Aquila (69753 inhabitants)
42 Km W of Teramo (54892 inhabitants)
49 Km E of Terni (111501 inhabitants)
67 Km SE of Foligno (57155 inhabitants)
70 Km NE of Guidonia Montecelio (88673 inhabitants)
70 Km NE of Tivoli (56533 inhabitants)
74 Km W of Montesilvano (53738 inhabitants)
78 Km W of Chieti (51815 inhabitants)
80 Km W of Pescara (121014 inhabitants)
92 Km NE of Roma (2864731 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
97 Km SE of Perugia (166134 inhabitants)
99 Km NE of Velletri (53303 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 1.3 2020-11-26
23:47:09		 42.51 13.24 16 2020-11-26
23:51:49		 Sala Sismica INGV-Roma 85040691
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-26 23:47:09 ± 0.12
Latitude 42.51 ± 0.01
Longitude 13.24 ± 0.01
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 85040691

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 590
Semi-minor axis of confidence ellipse (meter) 103
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 360
Circular confidence region, given by single value of horizontal uncertainty (meter) 590
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 140
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.40739
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 85040691
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-26 23:51:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2020-11-26T23:47:31.56 3.0 undecidable manual S -0.03 0
IV.FDMO.HHZ. 2020-11-26T23:47:29.96 3.0 undecidable manual S -0.12 0
IV.MC2.EHZ. 2020-11-26T23:47:25.58 3.0 undecidable manual S 354 0.4074 99 0.99 0
IV.ARRO.EHZ. 2020-11-26T23:47:23.11 0.6 undecidable manual S 282 0.3588 101 -0.07 48
IV.MNTT.EHZ. 2020-11-26T23:47:23.08 3.0 negative manual P 0.44 0
IV.NRCA.HHZ. 2020-11-26T23:47:22.79 0.6 undecidable manual S 344 0.3408 101 0.14 47
IV.GUMA.HHZ. 2020-11-26T23:47:21.67 3.0 negative manual P 0.06 0
IV.MF5.EHZ. 2020-11-26T23:47:20.80 3.0 positive manual P 0.12 0
IV.MTRA.EHZ. 2020-11-26T23:47:20.61 0.6 undecidable manual S 24 0.2752 106 -0.14 47
IV.TERO.HHZ. 2020-11-26T23:47:20.96 0.6 undecidable manual S 66 0.2905 104 -0.22 46
IV.FDMO.HHZ. 2020-11-26T23:47:20.97 3.0 negative manual P -0.23 0
IV.GIGS.HHE. 2020-11-26T23:47:19.77 0.6 undecidable manual S 102 0.2482 108 -0.23 46
MN.AQU.HHN. 2020-11-26T23:47:18.20 0.6 undecidable manual S 142 0.1934 115 -0.26 47
IV.MC2.EHZ. 2020-11-26T23:47:18.64 1.0 undecidable manual P 354 0.4074 99 0.24 23
IV.LNSS.HHZ. 2020-11-26T23:47:17.52 0.6 undecidable manual S 303 0.1781 118 -0.55 45
IV.NRCA.HHZ. 2020-11-26T23:47:17.28 0.1 undecidable manual P 344 0.3408 101 0 97
IV.ARRO.EHZ. 2020-11-26T23:47:17.49 0.3 positive manual P 282 0.3588 101 -0.1 71
IV.SMA1.EHZ. 2020-11-26T23:47:17.29 0.6 undecidable manual S 29 0.1421 126 0.13 50
IV.TERO.HHZ. 2020-11-26T23:47:16.40 0.1 undecidable manual P 66 0.2905 104 -0.04 96
IV.CAMP.HHZ. 2020-11-26T23:47:16.63 0.6 undecidable manual S 76 0.1259 130 -0.16 48
IV.MTRA.EHZ. 2020-11-26T23:47:16.19 0.3 undecidable manual P 24 0.2752 106 0 73
IV.GIGS.HHE. 2020-11-26T23:47:15.60 0.1 undecidable manual P 102 0.2482 108 -0.15 95
MN.AQU.HHN. 2020-11-26T23:47:15.43 0.1 undecidable manual P 142 0.1934 115 0.56 89
IV.CAMP.HHZ. 2020-11-26T23:47:14.01 0.1 positive manual P 76 0.1259 130 0.11 100
IV.SMA1.EHZ. 2020-11-26T23:47:14.37 0.1 positive manual P 29 0.1421 126 0.25 97
IV.LNSS.HHZ. 2020-11-26T23:47:14.61 0.1 undecidable manual P 303 0.1781 118 -0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CAMP.HHN. ML:1.3 0.0001455 0.34 AML other m 2020-11-26T23:47:16.95
IV.SMA1.EHN. ML:1.4 0.0001725 0.16 AML other m 2020-11-26T23:47:17.65
IV.SMA1.EHE. ML:1.7 0.0003995 0.38 AML other m 2020-11-26T23:47:17.87
IV.CAMP.HHE. ML:1.2 0.000127 0.4 AML other m 2020-11-26T23:47:17.69
IV.LNSS.HHE. ML:1.5 0.000197 0.1 AML other m 2020-11-26T23:47:18.29
IV.LNSS.HHN. ML:1.4 0.000153 0.7 AML other m 2020-11-26T23:47:18.49
IV.MTRA.EHE. ML:1.4 0.000119 1.46 AML other m 2020-11-26T23:47:20.89
IV.MTRA.EHN. ML:1.3 8.115E-5 1.76 AML other m 2020-11-26T23:47:20.93
IV.TERO.HHE. ML:1.1 5.23E-5 0.12 AML other m 2020-11-26T23:47:21.52
IV.TERO.HHN. ML:1 4.42E-5 0.1 AML other m 2020-11-26T23:47:22.66
IV.NRCA.HHE. ML:1.6 0.000136 0.1 AML other m 2020-11-26T23:47:23.32
IV.ARRO.EHE. ML:1 3.33E-5 0.6 AML other m 2020-11-26T23:47:23.29
IV.ARRO.EHN. ML:1 3.68E-5 0.2 AML other m 2020-11-26T23:47:23.61
IV.NRCA.HHN. ML:1.5 0.0001215 0.12 AML other m 2020-11-26T23:47:24.48
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