Earthquake with magnitude of ML 0.9 on date 22-09-2020 and time 10:44:20 (Italy) in region 2 km SW Amatrice (RI)

A magnitude ML 0.9 earthquake occured in region: 2 km SW Amatrice (RI), on

  • 22-09-2020 08:44:20 (UTC)
  • 22-09-2020 10:44:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.61, 13.28 at 13 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
Amatrice RI 2 2657 2657
Accumoli RI 9 667 3324
Cittareale RI 10 482 3806
Campotosto AQ 10 542 4348
Montereale AQ 10 2581 6929
Capitignano AQ 11 665 7594
Borbona RI 16 617 8211
Cagnano Amiterno AQ 18 1369 9580
Arquata del Tronto AP 18 1178 10758
Crognaleto TE 18 1297 12055
Posta RI 18 694 12749
Barete AQ 18 737 13486
Cortino TE 19 656 14142
Pizzoli AQ 20 4326 18468

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 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)
72 Km W of Montesilvano (53738 inhabitants)
78 Km W of Pescara (121014 inhabitants)
79 Km W of Chieti (51815 inhabitants)
82 Km NE of Guidonia Montecelio (88673 inhabitants)
82 Km NE of Tivoli (56533 inhabitants)
91 Km SE of Perugia (166134 inhabitants)
99 Km E of Viterbo (67173 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 0.9 2020-09-22
08:44:20
42.61 13.28 13 2020-09-22
08:54:15
Sala Sismica INGV-Roma 83125911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-22 08:44:20 ± 0.06
Latitude 42.61 ± 0.00
Longitude 13.28 ± 0.00
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83125911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 360
Semi-minor axis of confidence ellipse (meter) 54
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 206
Circular confidence region, given by single value of horizontal uncertainty (meter) 360
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 75
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.2698
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 83125911
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-22 08:54:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
CR.STON.BHZ. 2020-09-22T08:45:58.18 3.0 undecidable manual Sn 3.87 0
IV.SENA.HHZ. 2020-09-22T08:45:55.39 3.0 undecidable manual Sg 5.28 0
IV.NOCI.HHZ. 2020-09-22T08:45:55.31 3.0 undecidable manual Sn -5.55 0
GU.RORO.HHZ. 2020-09-22T08:45:53.00 3.0 undecidable manual Sn 2.78 0
IV.EUCT.HNZ. 2020-09-22T08:45:44.85 3.0 undecidable manual Sn -1.29 0
RF.GEPF.HHZ. 2020-09-22T08:45:42.29 3.0 undecidable manual Sn -1.8 0
MN.CLTB.HHZ. 2020-09-22T08:45:42.97 3.0 positive manual Pg 10.08 0
IT.ACQ.HGZ. 2020-09-22T08:45:41.61 3.0 undecidable manual Sn -7.34 0
IV.CROCE.HHZ. 2020-09-22T08:45:39.41 3.0 positive manual Pn -5.72 0
MN.TRI.HHZ. 2020-09-22T08:45:37.21 3.0 undecidable manual Sg 4.63 0
IV.MFNL.HHZ. 2020-09-22T08:45:24.15 3.0 undecidable manual Pn -5.65 0
IV.IFIL.HHZ. 2020-09-22T08:45:24.27 3.0 undecidable manual Pn 1.98 0
IV.SBPO.HNZ. 2020-09-22T08:45:23.63 3.0 undecidable manual Sg 1 0
CR.ZAG.BHZ. 2020-09-22T08:45:17.98 3.0 negative manual Pg 9.36 0
IV.VIVA.HHZ. 2020-09-22T08:44:49.75 3.0 undecidable manual S -5.25 0
IV.ROSPO.HHZ. 2020-09-22T08:44:47.03 3.0 undecidable manual Pg 3.66 0
IT.LRNO.HNZ. 2020-09-22T08:44:44.65 3.0 undecidable manual Pn -1.69 0
IV.COR1.EHZ. 2020-09-22T08:44:33.15 3.0 undecidable manual S -3.07 0
IV.GIGS.HHZ. 2020-09-22T08:44:30.46 0.1 undecidable manual S 127 0.2698 95 -0.02 97
IV.TERO.HHZ. 2020-09-22T08:44:29.41 0.1 undecidable manual S 88 0.2392 97 -0.17 95
IV.NRCA.HHZ. 2020-09-22T08:44:29.75 0.1 undecidable manual S 331 0.25 96 -0.15 94
IV.MTRA.EHZ. 2020-09-22T08:44:27.25 0.1 undecidable manual S 31 0.1664 104 -0.2 95
IV.LNSS.HHE. 2020-09-22T08:44:27.63 0.1 undecidable manual S 266 0.1763 102 -0.1 96
IV.CAMP.HHN. 2020-09-22T08:44:26.14 0.1 undecidable manual S 129 0.1241 116 -0.13 98
IV.NRCA.HHZ. 2020-09-22T08:44:25.81 0.1 undecidable manual P 331 0.25 96 0.09 96
IV.GIGS.HHZ. 2020-09-22T08:44:25.80 0.3 undecidable manual P 127 0.2698 95 -0.26 69
IV.RM33.EHZ. 2020-09-22T08:44:25.82 0.3 undecidable manual S 204 0.116 119 -0.23 71
IV.TERO.HHZ. 2020-09-22T08:44:25.77 0.3 undecidable manual P 88 0.2392 97 0.23 70
IV.T1299.EHE. 2020-09-22T08:44:24.15 0.1 undecidable manual S 7 0.0198 168 -0.18 98
IV.SMA1.EHZ. 2020-09-22T08:44:24.65 0.1 undecidable manual S 69 0.0441 153 0.07 100
IV.MTRA.EHZ. 2020-09-22T08:44:24.48 0.1 positive manual P 31 0.1664 104 0.17 96
IV.LNSS.HHE. 2020-09-22T08:44:24.56 0.1 undecidable manual P 266 0.1763 102 0.09 98
IV.PE3.EHZ. 2020-09-22T08:44:23.93 3.0 negative manual P -1.63 0
IV.RM33.EHZ. 2020-09-22T08:44:23.70 0.3 positive manual P 204 0.116 119 0.2 72
IV.CAMP.HHN. 2020-09-22T08:44:23.77 0.1 undecidable manual P 129 0.1241 116 0.14 97
IV.T1299.EHE. 2020-09-22T08:44:22.67 0.1 undecidable manual P 7 0.0198 168 0.16 99
IV.SMA1.EHZ. 2020-09-22T08:44:22.98 0.3 positive manual P 69 0.0441 153 0.33 71
IV.APEC.HHZ. 2020-09-22T08:44:21.72 3.0 positive manual P -1.56 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.6 0.0005870282 0.256 AML other m 2020-09-22T08:44:24.90
IV.SMA1.EHN. ML:1.3 0.0002939514 0.1024 AML other m 2020-09-22T08:44:25.03
IV.RM33.EHE. ML:1 8.46927E-5 0.1792 AML other m 2020-09-22T08:44:26.18
IV.RM33.EHN. ML:0.7 5.1032E-5 0.1408 AML other m 2020-09-22T08:44:26.36
IV.MTRA.EHE. ML:0.7 3.537057E-5 0.064 AML other m 2020-09-22T08:44:27.43
IV.MTRA.EHN. ML:0.9 6.5178245E-5 0.2624 AML other m 2020-09-22T08:44:27.65
IV.TERO.HHE. ML:0.4 1.60186215E-5 0.0576 AML other m 2020-09-22T08:44:31.66
IV.TERO.HHN. ML:0.6 1.820037E-5 0.0576 AML other m 2020-09-22T08:44:29.57
IV.NRCA.HHE. ML:1.1 5.8742045E-5 0.16 AML other m 2020-09-22T08:44:29.94
IV.NRCA.HHN. ML:1 4.9417775E-5 0.1408 AML other m 2020-09-22T08:44:29.93
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