Earthquake with magnitude of ML 1.2 on date 28-09-2020 and time 00:48:30 (Italy) in region 5 km NE Accumoli (RI)

A magnitude ML 1.2 earthquake occured in region: 5 km NE Accumoli (RI), on

  • 27-09-2020 22:48:30 (UTC)
  • 28-09-2020 00:48:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.73, 13.28 at 9 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
Accumoli RI 5 667 667
Arquata del Tronto AP 5 1178 1845
Amatrice RI 11 2657 4502
Acquasanta Terme AP 11 2916 7418
Montegallo AP 13 523 7941
Cittareale RI 16 482 8423
Norcia PG 17 4957 13380
Valle Castellana TE 18 977 14357
Montemonaco AP 19 604 14961

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km W of Teramo (54892 inhabitants)
43 Km N of L'Aquila (69753 inhabitants)
54 Km E of Foligno (57155 inhabitants)
55 Km E of Terni (111501 inhabitants)
75 Km W of Montesilvano (53738 inhabitants)
82 Km W of Pescara (121014 inhabitants)
84 Km NW of Chieti (51815 inhabitants)
84 Km SE of Perugia (166134 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km NE of Tivoli (56533 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 1.2 2020-09-27
22:48:30
42.73 13.28 9 2020-09-27
22:54:42
Sala Sismica INGV-Roma 83316311
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-27 22:48:30 ± 0.15
Latitude 42.73 ± 0.00
Longitude 13.28 ± 0.00
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83316311

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 276
Semi-minor axis of confidence ellipse (meter) 204
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 261
Circular confidence region, given by single value of horizontal uncertainty (meter) 280
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.21854
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.1
Num. used stations 10
Type of magnitude ML
Reference to an origin 83316311
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-27 22:54:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MCEL.HHZ. 2020-09-27T22:50:00.81 3.0 undecidable manual Sg 15.91 0
IV.CMPR.HHZ. 2020-09-27T22:49:37.44 3.0 undecidable manual Sn -6.71 0
IV.RMP.HHZ. 2020-09-27T22:49:31.13 3.0 undecidable manual Sg 9.43 0
IV.PAOL.HHZ. 2020-09-27T22:49:28.03 3.0 undecidable manual Sn 0.93 0
XK.GIZZ.HHZ. 2020-09-27T22:49:27.49 3.0 negative manual Pg 7.04 0
IV.CET2.HHZ. 2020-09-27T22:49:18.12 3.0 undecidable manual Pn 5.53 0
IV.MCEL.HHZ. 2020-09-27T22:49:12.02 3.0 undecidable manual Pg 10.46 0
ST.OZOL.EHZ. 2020-09-27T22:49:00.32 3.0 negative manual Pn 0.2 0
IV.SGTA.HHZ. 2020-09-27T22:48:54.16 3.0 undecidable manual Pg 4.16 0
IV.MCRV.HHZ. 2020-09-27T22:48:52.52 3.0 undecidable manual Pn -2.2 0
IV.PTRJ.HNZ. 2020-09-27T22:48:50.22 3.0 undecidable manual Pg 3.14 0
IV.PAOL.HHZ. 2020-09-27T22:48:47.26 3.0 undecidable manual Pn -4.3 0
IV.SRES.HHZ. 2020-09-27T22:48:47.13 3.0 positive manual Pg 1.73 0
IV.FIR.HHZ. 2020-09-27T22:48:43.37 3.0 undecidable manual Pn -4.15 0
IV.LNSS.HHZ. 2020-09-27T22:48:39.61 0.3 undecidable manual S 235 0.2185 110 0.06 74
IV.MC2.EHE. 2020-09-27T22:48:38.86 0.3 undecidable manual S 339 0.1961 113 0.14 73
IV.NRCA.HHZ. 2020-09-27T22:48:37.63 0.3 undecidable manual S 310 0.1628 117 0.06 74
IV.MMO1.EHE. 2020-09-27T22:48:37.68 0.3 undecidable manual S 10 0.1736 115 -0.26 71
IV.LNSS.HHZ. 2020-09-27T22:48:35.62 0.3 undecidable manual P 235 0.2185 110 -0.13 73
IV.MC2.EHE. 2020-09-27T22:48:35.21 0.3 undecidable manual P 339 0.1961 113 -0.06 74
IV.MTRA.EHZ. 2020-09-27T22:48:35.20 0.3 undecidable manual S 71 0.0872 133 0.06 76
IV.SMA1.EHZ. 2020-09-27T22:48:35.51 0.3 undecidable manual S 159 0.1052 128 -0.16 74
IV.MMO1.EHE. 2020-09-27T22:48:34.88 0.3 undecidable manual P 10 0.1736 115 0.07 74
IV.NRCA.HHZ. 2020-09-27T22:48:34.56 0.1 positive manual P 310 0.1628 117 -0.04 100
IV.SMA1.EHZ. 2020-09-27T22:48:33.64 0.1 undecidable manual P 159 0.1052 128 0.13 99
IV.MTRA.EHZ. 2020-09-27T22:48:33.30 0.1 undecidable manual P 71 0.0872 133 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:1.2 0.0002088307 0.0768 AML other m 2020-09-27T22:48:35.31
IV.MTRA.EHN. ML:1.1 0.0001756718 0.0896 AML other m 2020-09-27T22:48:35.28
IV.MTRA.HNE. ML:1.2 0.0002304848 0.3456 AML other m 2020-09-27T22:48:35.31
IV.MTRA.HNN. ML:1.1 0.00016378579 0.1024 AML other m 2020-09-27T22:48:35.28
IV.SMA1.EHE. ML:1.2 0.0001804779 1.8944 AML other m 2020-09-27T22:48:36.39
IV.SMA1.EHN. ML:1.1 0.00014561929 0.1792 AML other m 2020-09-27T22:48:36.01
IV.NRCA.HNN. ML:1.4 0.00021363535 1.0752 AML other m 2020-09-27T22:48:42.56
IV.NRCA.HHN. ML:1.2 0.00013347079 0.1536 AML other m 2020-09-27T22:48:37.74
IV.LNSS.HHE. ML:1.4 0.00013872785 2.24 AML other m 2020-09-27T22:49:02.52
IV.LNSS.HHN. ML:1.1 7.184257E-5 1.5744 AML other m 2020-09-27T22:48:51.44
IV.FIR.HNE. ML:2.9 0.0002238049 0.0768 AML other m 2020-09-27T22:48:48.90
IV.FIR.HNN. ML:2.9 0.0002330204 0.064 AML other m 2020-09-27T22:48:52.77
IV.FIR.HHE. ML:3 0.0002660765 0.0512 AML other m 2020-09-27T22:48:46.55
IV.FIR.HHN. ML:3 0.0002748896 0.064 AML other m 2020-09-27T22:48:52.75
IV.SRES.HHE. ML:1.8 8.279132E-5 2.3552 AML other m 2020-09-27T22:48:50.88
IV.SRES.HHN. ML:1.9 0.00010789567 2.4832 AML other m 2020-09-27T22:49:09.66
IV.PAOL.HHE. ML:2.8 0.00016544305 2.0224 AML other m 2020-09-27T22:50:04.92
IV.PAOL.HHN. ML:3 0.0002692269 2.176 AML other m 2020-09-27T22:49:32.31
IV.PAOL.HNE. ML:3 0.0002337697 1.5488 AML other m 2020-09-27T22:49:33.18
IV.PAOL.HNN. ML:3.1 0.00029045575 1.3696 AML other m 2020-09-27T22:49:24.25
IV.PTRJ.HHE. ML:1.4 1.15291555E-5 0.384 AML other m 2020-09-27T22:48:49.24
IV.PTRJ.HHN. ML:3.8 0.0021737053 0.128 AML other m 2020-09-27T22:49:49.79
IV.PTRJ.HNE. ML:3.7 0.001740417 0.0896 AML other m 2020-09-27T22:48:51.10
IV.PTRJ.HNN. ML:3.8 0.002121974 0.1024 AML other m 2020-09-27T22:48:57.01
IV.MCRV.HHE. ML:2.7 8.9420875E-5 0.0512 AML other m 2020-09-27T22:49:07.77
IV.MCRV.HHN. ML:2.9 0.00013176775 0.064 AML other m 2020-09-27T22:49:07.80
IV.SGTA.HHE. ML:3 0.0001867538 0.6784 AML other m 2020-09-27T22:49:39.48
IV.SGTA.HHN. ML:2.9 0.00016730365 0.7168 AML other m 2020-09-27T22:49:36.84
IV.SGTA.HNE. ML:3.1 0.00022302165 0.96 AML other m 2020-09-27T22:49:09.91
IV.SGTA.HNN. ML:2.9 0.000164039525 0.4608 AML other m 2020-09-27T22:48:54.31
ST.OZOL.EHE. ML:2.7 1.8216115E-5 0.0384 AML other m 2020-09-27T22:49:06.28
ST.OZOL.EHN. ML:2.6 1.255963865E-5 0.064 AML other m 2020-09-27T22:49:40.03
ST.OZOL.HNE. ML:4.1 0.00053080735 1.2672 AML other m 2020-09-27T22:49:02.59
ST.OZOL.HNN. ML:3.6 0.00016220132 0.9088 AML other m 2020-09-27T22:50:05.37
IV.MCEL.HHE. ML:3.3 0.000195520475 1.92 AML other m 2020-09-27T22:49:27.14
IV.MCEL.HHN. ML:3.1 0.00012567241 0.0384 AML other m 2020-09-27T22:50:14.60
IV.CET2.HHE. ML:3.7 0.00026722645 0.9088 AML other m 2020-09-27T22:50:28.09
IV.CET2.HHN. ML:3.8 0.0003241021 0.896 AML other m 2020-09-27T22:50:28.32
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