Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 08-04-2020 and time 05:49:10 (UTC) in region 6 km NW Montereale (AQ)

A magnitude ML 1.1 earthquake occured in region: 6 km NW Montereale (AQ), on

  • 08-04-2020 05:49:10 (UTC)
  • 08-04-2020 07:49:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5640, 13.2020 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
Montereale AQ 6 2581 2581
Cittareale RI 7 482 3063
Borbona RI 8 617 3680
Capitignano AQ 10 665 4345
Posta RI 10 694 5039
Amatrice RI 10 2657 7696
Cagnano Amiterno AQ 12 1369 9065
Campotosto AQ 14 542 9607
Barete AQ 14 737 10344
Accumoli RI 15 667 11011
Pizzoli AQ 16 4326 15337
Micigliano RI 17 127 15464
Antrodoco RI 19 2588 18052
Leonessa RI 19 2435 20487

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NW of L'Aquila (69753 inhabitants)
43 Km W of Teramo (54892 inhabitants)
45 Km E of Terni (111501 inhabitants)
60 Km SE of Foligno (57155 inhabitants)
74 Km NE of Guidonia Montecelio (88673 inhabitants)
75 Km NE of Tivoli (56533 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
83 Km W of Chieti (51815 inhabitants)
84 Km W of Pescara (121014 inhabitants)
90 Km SE of Perugia (166134 inhabitants)
91 Km E of Viterbo (67173 inhabitants)
95 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
Reviewed
Rev100 		ML 1.1 2020-04-08
05:49:10		 42.5642 13.2017 11 2020-04-08
05:57:41		 Sala Sismica INGV-Roma 78007061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-08 05:49:10 ± 0.19
Latitude 42.5642 ± 0.0153
Longitude 13.2017 ± 0.0061
Depth (km) 11 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 78007061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1691
Semi-minor axis of confidence ellipse (meter) 479
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 178
Circular confidence region, given by single value of horizontal uncertainty (meter) 1690.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 128
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
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) 0.05576
Epicentral distance of station farthest from the epicenter (degree) 0.30217
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 78007061
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-08 05:57:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2020-04-08T05:49:21.68 0.3 undecidable manual S 79 33.5442 91 -0.23 69
IV.GIGS.HHZ. 2020-04-08T05:49:21.47 0.6 undecidable manual S 112 32.745 91 -0.25 47
IV.TERO.HHZ. 2020-04-08T05:49:17.01 0.6 positive manual P 79 33.5442 91 -0.09 48
IV.GIGS.HHZ. 2020-04-08T05:49:17.27 1.0 positive manual P 112 32.745 91 0.28 23
IV.LNSS.HHZ. 2020-04-08T05:49:16.44 0.6 undecidable manual S 288 13.875 102 -0.24 47
IV.SMA1.EHZ. 2020-04-08T05:49:16.57 0.3 undecidable manual S 56 13.1757 105 0.07 75
IV.LNSS.HHZ. 2020-04-08T05:49:14.13 0.1 positive manual P 288 13.875 102 0.05 100
IV.SMA1.EHZ. 2020-04-08T05:49:14.21 0.3 negative manual P 56 13.1757 105 0.24 72
IV.RM33.EHZ. 2020-04-08T05:49:14.91 0.3 undecidable manual S 170 6.1938 142 -0.06 76
IV.RM33.EHZ. 2020-04-08T05:49:13.27 0.6 undecidable manual P 170 6.1938 142 0.18 49
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHE. ML:1.3 0.0002915 0.32 AML other m 2020-04-08T05:49:15.23
IV.RM33.EHN. ML:1.1 0.0001915 0.98 AML other m 2020-04-08T05:49:15.18
IV.LNSS.HHN. ML:1.0 0.00010714999999999999 0.16 AML other m 2020-04-08T05:49:16.56
IV.LNSS.HHE. ML:1.1 0.0001235 0.34 AML other m 2020-04-08T05:49:16.96
IV.SMA1.EHN. ML:1.2 0.000164 0.56 AML other m 2020-04-08T05:49:16.85
IV.SMA1.EHE. ML:1.7 0.000518 0.52 AML other m 2020-04-08T05:49:16.94
IV.TERO.HHN. ML:0.8 0.00002625 1.52 AML other m 2020-04-08T05:49:21.93
IV.TERO.HHE. ML:0.8 0.000030050000000000002 0.62 AML other m 2020-04-08T05:49:22.00
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