Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 26-03-2020 and time 11:01:20 (Italy) in region 1 km SW Amatrice (RI)

A magnitude ML 0.9 earthquake occured in region: 1 km SW Amatrice (RI), on

  • 26-03-2020 10:01:20 (UTC)
  • 26-03-2020 11:01:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6220, 13.2770 at 11 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Amatrice RI 1 2657 2657
Accumoli RI 9 667 3324
Cittareale RI 10 482 3806
Campotosto AQ 10 542 4348
Montereale AQ 11 2581 6929
Capitignano AQ 11 665 7594
Arquata del Tronto AP 17 1178 8772
Borbona RI 17 617 9389
Posta RI 18 694 10083
Cagnano Amiterno AQ 19 1369 11452
Crognaleto TE 19 1297 12749
Cortino TE 19 656 13405
Barete AQ 19 737 14142
Acquasanta Terme AP 20 2916 17058

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NW of L'Aquila (69753 inhabitants)
35 Km W of Teramo (54892 inhabitants)
52 Km E of Terni (111501 inhabitants)
60 Km SE of Foligno (57155 inhabitants)
73 Km W of Montesilvano (53738 inhabitants)
79 Km W of Pescara (121014 inhabitants)
79 Km W of Chieti (51815 inhabitants)
83 Km NE of Guidonia Montecelio (88673 inhabitants)
83 Km NE of Tivoli (56533 inhabitants)
90 Km SE of Perugia (166134 inhabitants)
99 Km E of Viterbo (67173 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
Bulletin
Rev1000 		ML 0.9 2020-03-26
10:01:20		 42.6222 13.2773 11 2020-07-18
21:08:38		 Bollettino Sismico Italiano INGV 79840241
Reviewed
Rev100 		ML 0.9 2020-03-26
10:01:20		 42.6123 13.2845 12 2020-03-26
11:22:03		 Sala Sismica INGV-Roma 77588471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-26 10:01:20 ± 0.1
Latitude 42.6222 ± 0.0054
Longitude 13.2773 ± 0.0098
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 79840241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 796
Semi-minor axis of confidence ellipse (meter) 539
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 249
Circular confidence region, given by single value of horizontal uncertainty (meter) 800.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 129
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.29588
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 5
Type of magnitude ML
Reference to an origin 77588471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-26 11:22:03

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 5
Type of magnitude ML
Reference to an origin 79840241
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-06-03 01:23:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MBAL.EHZ. 2020-03-26T10:03:10.35 3.0 undecidable manual Sg 23.110001 0
IV.FVI.HHZ. 2020-03-26T10:03:03.22 3.0 undecidable manual Sn 3.61 0
AC.VLO.HHZ. 2020-03-26T10:02:44.55 3.0 undecidable manual Pg 16.040001 0
IV.SALB.HHZ. 2020-03-26T10:02:14.23 3.0 positive manual Pg 7.83 0
GU.CARD.HHZ. 2020-03-26T10:01:51.54 3.0 undecidable manual Pn 0.83 0
IV.CERA.HHZ. 2020-03-26T10:01:33.92 3.0 undecidable manual Pg 0.49 0
IV.MCIV.CHZ. 2020-03-26T10:01:32.50 3.0 positive manual Pn -0.36 0
IV.MC2.EHE. 2020-03-26T10:01:32.60 0.3 undecidable manual S 347 32.8449 50 0.75 59
IV.MIDA.HHZ. 2020-03-26T10:01:32.72 3.0 undecidable manual P -1.7 0
IV.MMO1.EHN. 2020-03-26T10:01:31.40 0.3 undecidable manual S 7 31.0467 50 0.04 72
IV.GIGS.HHE. 2020-03-26T10:01:30.83 0.3 undecidable manual S 128 30.5472 50 -0.41 67
IV.TERO.HHZ. 2020-03-26T10:01:29.86 0.3 undecidable manual S 90 26.6511 50 -0.33 68
IV.NRCA.HHN. 2020-03-26T10:01:29.83 0.3 undecidable manual S 331 26.9508 50 -0.44 67
IV.MC2.EHE. 2020-03-26T10:01:27.36 0.3 undecidable manual P 347 32.8449 50 0.3 68
IV.GIGS.HHE. 2020-03-26T10:01:27.35 0.1 undecidable manual P 128 30.5472 50 0.65 82
IV.MTRA.EHZ. 2020-03-26T10:01:27.33 0.3 undecidable manual S 33 17.7711 121 -0.35 69
IV.RM33.EHZ. 2020-03-26T10:01:26.16 0.3 undecidable manual S 202 13.5753 128 -0.3 70
IV.MMO1.EHN. 2020-03-26T10:01:26.66 0.1 undecidable manual P 7 31.0467 50 -0.11 95
IV.CAMP.HHE. 2020-03-26T10:01:26.58 0.6 undecidable manual S 132 14.3745 126 -0.12 49
IV.NRCA.HHN. 2020-03-26T10:01:25.89 0.1 undecidable manual P 331 26.9508 50 -0.25 93
IV.TERO.HHZ. 2020-03-26T10:01:25.97 0.3 undecidable manual P 90 26.6511 50 -0.13 71
IV.CAMP.HHE. 2020-03-26T10:01:24.58 0.3 undecidable manual P 132 14.3745 126 0.5 67
IV.MTRA.EHZ. 2020-03-26T10:01:24.56 0.1 undecidable manual P 33 17.7711 121 -0.09 97
IV.SMA1.EHZ. 2020-03-26T10:01:24.66 0.3 undecidable manual S 79 4.7952 155 0.14 74
IV.SMA1.EHZ. 2020-03-26T10:01:23.10 0.1 undecidable manual P 79 4.7952 155 0.28 96
IV.RM33.EHZ. 2020-03-26T10:01:23.87 0.1 undecidable manual P 202 13.5753 128 -0.07 98
IV.T1299.EHZ. 2020-03-26T10:01:23.99 0.3 undecidable manual S 16 1.3986 172 -0.2 73
IV.T1299.EHZ. 2020-03-26T10:01:22.72 0.1 undecidable manual P 16 1.3986 172 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHN. ML:0.6 0.00004391001 0.0192 AML other m 2020-03-26T10:01:26.51
IV.RM33.EHE. ML:0.9 0.0000836944 0.1792 AML other m 2020-03-26T10:01:26.76
IV.MTRA.EHE. ML:1.0 0.00009016349 0.2816 AML other m 2020-03-26T10:01:28.17
IV.MTRA.EHN. ML:1.1 0.00009335432499999999 0.32 AML other m 2020-03-26T10:01:28.17
IV.TERO.HHE. ML:0.4 0.000014214105500000002 0.0384 AML other m 2020-03-26T10:01:30.42
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