Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 08-09-2020 and time 22:23:19 (UTC) in region 3 km NW Montereale (AQ)

A magnitude ML 1.1 earthquake occured in region: 3 km NW Montereale (AQ), on

  • 08-09-2020 22:23:19 (UTC)
  • 09-09-2020 00:23:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5410, 13.2200 at 12 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 3 2581 2581
Capitignano AQ 7 665 3246
Borbona RI 8 617 3863
Cagnano Amiterno AQ 9 1369 5232
Cittareale RI 10 482 5714
Posta RI 10 694 6408
Barete AQ 11 737 7145
Amatrice RI 11 2657 9802
Campotosto AQ 13 542 10344
Pizzoli AQ 13 4326 14670
Micigliano RI 17 127 14797
Accumoli RI 17 667 15464
Antrodoco RI 18 2588 18052
Scoppito AQ 19 3727 21779
Borgo Velino RI 20 972 22751

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NW of L'Aquila (69753 inhabitants)
42 Km W of Teramo (54892 inhabitants)
47 Km E of Terni (111501 inhabitants)
63 Km SE of Foligno (57155 inhabitants)
72 Km NE of Guidonia Montecelio (88673 inhabitants)
73 Km NE of Tivoli (56533 inhabitants)
76 Km W of Montesilvano (53738 inhabitants)
81 Km W of Chieti (51815 inhabitants)
82 Km W of Pescara (121014 inhabitants)
92 Km E of Viterbo (67173 inhabitants)
93 Km SE of Perugia (166134 inhabitants)
94 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 2020-09-08
22:23:19		 42.5412 13.2197 12 2020-09-08
22:32:38		 Sala Sismica INGV-Roma 82748391
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-08 22:23:19 ± 0.1
Latitude 42.5412 ± 0.0063
Longitude 13.2197 ± 0.0061
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 82748391

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 633
Semi-minor axis of confidence ellipse (meter) 345
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 17
Circular confidence region, given by single value of horizontal uncertainty (meter) 630.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 81
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.03238
Epicentral distance of station farthest from the epicenter (degree) 0.37052
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 9
Type of magnitude ML
Reference to an origin 82748391
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-08 22:32:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MC2.EHZ. 2020-09-08T22:23:33.17 0.6 undecidable manual S 357 41.1255 91 0.17 61
IV.MMO1.HNZ. 2020-09-08T22:23:32.63 0.6 undecidable manual S 12 40.7259 91 -0.24 61
IV.ARRO.EHZ. 2020-09-08T22:23:31.87 0.6 undecidable manual S 277 37.3293 91 -0.11 63
IV.NRCA.HNZ. 2020-09-08T22:23:30.47 0.6 undecidable manual S 345 33.5442 91 -0.5 58
IV.TERO.HHZ. 2020-09-08T22:23:30.07 0.6 undecidable manual S 74 32.6451 91 -0.66 54
IV.GIGS.HHE. 2020-09-08T22:23:29.65 0.6 undecidable manual S 109 30.4473 91 -0.5 57
IV.GAVE.HNZ. 2020-09-08T22:23:29.96 0.6 undecidable manual S 302 31.4463 91 -0.44 59
IV.MC2.EHZ. 2020-09-08T22:23:28.17 0.3 undecidable manual P 357 41.1255 91 0.86 74
IV.MMO1.HNZ. 2020-09-08T22:23:27.64 0.3 undecidable manual P 12 40.7259 91 0.4 88
IV.CAMP.HHZ. 2020-09-08T22:23:26.09 0.6 undecidable manual S 92 15.4734 100 -0.06 65
IV.ARRO.EHZ. 2020-09-08T22:23:26.49 0.3 undecidable manual P 277 37.3293 91 -0.23 91
IV.LNSS.HHZ. 2020-09-08T22:23:26.12 0.6 undecidable manual S 295 16.1727 98 -0.22 64
IV.NRCA.HNZ. 2020-09-08T22:23:26.67 0.3 undecidable manual P 345 33.5442 91 0.53 86
IV.GIGS.HHE. 2020-09-08T22:23:26.43 0.3 undecidable manual P 109 30.4473 91 0.76 80
IV.SMA1.EHZ. 2020-09-08T22:23:25.60 0.6 undecidable manual S 44 13.6752 106 -0.09 66
IV.GAVE.HNZ. 2020-09-08T22:23:25.59 0.3 undecidable manual P 302 31.4463 91 -0.22 93
IV.TERO.HHZ. 2020-09-08T22:23:25.67 0.3 undecidable manual P 74 32.6451 91 -0.34 90
IV.FIAM.HNE. 2020-09-08T22:23:25.91 0.3 undecidable manual P 196 31.4463 91 0.09 96
IV.T1299.HNZ. 2020-09-08T22:23:24.93 0.6 undecidable manual S 26 11.4774 116 -0.22 64
IV.SMA1.EHZ. 2020-09-08T22:23:23.17 0.3 undecidable manual P 44 13.6752 106 0.08 98
IV.CAMP.HHZ. 2020-09-08T22:23:23.41 0.3 undecidable manual P 92 15.4734 100 0.04 99
IV.LNSS.HHZ. 2020-09-08T22:23:23.38 0.3 undecidable manual P 295 16.1727 98 -0.09 98
IV.RM33.EHZ. 2020-09-08T22:23:23.67 0.6 undecidable manual S 187 3.5964 158 -0.03 68
IV.RM33.EHZ. 2020-09-08T22:23:22.11 0.3 undecidable manual P 187 3.5964 158 0.16 98
IV.T1299.HNZ. 2020-09-08T22:23:22.78 0.3 undecidable manual P 26 11.4774 116 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HNE. ML:1.2 0.000127590895 0.0896 AML other m 2020-09-08T22:23:26.37
IV.LNSS.HHE. ML:1.3 0.00015324535 0.1152 AML other m 2020-09-08T22:23:26.42
IV.LNSS.HHN. ML:1.0 0.000089792465 0.2176 AML other m 2020-09-08T22:23:26.36
IV.TERO.HHE. ML:1.1 0.000051860055000000005 0.1152 AML other m 2020-09-08T22:23:30.32
IV.TERO.HHN. ML:1.2 0.00007388966 0.128 AML other m 2020-09-08T22:23:30.27
IV.TERO.HNE. ML:1.2 0.00007597531 0.1408 AML other m 2020-09-08T22:23:30.33
IV.TERO.HNN. ML:1.1 0.000048123870000000007 0.0512 AML other m 2020-09-08T22:23:30.22
IV.ARRO.EHE. ML:0.6 0.0000171747875 0.1664 AML other m 2020-09-08T22:23:32.55
IV.ARRO.EHN. ML:0.8 0.00002444404 0.192 AML other m 2020-09-08T22:23:33.71
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