Earthquake with magnitude of ML 1.0 on date 24-09-2020 and time 21:30:42 (UTC) in region 8 km W Cittareale (RI)

A magnitude ML 1.0 earthquake occured in region: 8 km W Cittareale (RI), on

  • 24-09-2020 21:30:42 (UTC)
  • 24-09-2020 23:30:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.63, 13.07 at 10 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
Cittareale RI 8 482 482
Monteleone di Spoleto PG 10 599 1081
Cascia PG 11 3217 4298
Leonessa RI 11 2435 6733
Posta RI 12 694 7427
Borbona RI 14 617 8044
Poggiodomo PG 14 117 8161
Accumoli RI 16 667 8828
Amatrice RI 18 2657 11485
Norcia PG 18 4957 16442
Montereale AQ 19 2581 19023
Polino TR 19 233 19256
Micigliano RI 20 127 19383

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Terni (111501 inhabitants)
41 Km NW of L'Aquila (69753 inhabitants)
47 Km SE of Foligno (57155 inhabitants)
52 Km W of Teramo (54892 inhabitants)
75 Km NE of Guidonia Montecelio (88673 inhabitants)
77 Km SE of Perugia (166134 inhabitants)
77 Km N of Tivoli (56533 inhabitants)
82 Km E of Viterbo (67173 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
95 Km NE of Roma (2864731 inhabitants)
95 Km W of Chieti (51815 inhabitants)
96 Km W of Pescara (121014 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 1.0 2020-09-24
21:30:42
42.63 13.07 10 2020-09-24
21:36:08
Sala Sismica INGV-Roma 83212361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-24 21:30:42 ± 0.09
Latitude 42.63 ± 0.01
Longitude 13.07 ± 0.00
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83212361

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 518
Semi-minor axis of confidence ellipse (meter) 290
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 187
Circular confidence region, given by single value of horizontal uncertainty (meter) 520
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 79
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.40559
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 83212361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-24 21:36:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2020-09-24T21:30:57.47 0.3 undecidable manual S 2 0.4056 50 0.57 63
IV.MURB.HNZ. 2020-09-24T21:30:55.34 3.0 undecidable manual P -1.64 0
IV.MMO1.EHZ. 2020-09-24T21:30:54.41 0.6 undecidable manual S 35 0.3283 50 -0.19 47
IV.ARRO.EHZ. 2020-09-24T21:30:51.25 0.6 undecidable manual S 257 0.2293 111 -0.32 46
IV.SMA1.EHZ. 2020-09-24T21:30:50.38 0.3 undecidable manual S 90 0.1961 114 0 75
IV.FDMO.HHZ. 2020-09-24T21:30:50.56 1.0 positive manual P 2 0.4056 50 -0.09 24
IV.NRCA.HHZ. 2020-09-24T21:30:50.38 0.6 undecidable manual S 9 0.2059 113 -0.35 46
IV.T1299.EHZ. 2020-09-24T21:30:49.00 0.3 undecidable manual S 89 0.1565 119 -0.04 75
IV.MMO1.EHZ. 2020-09-24T21:30:49.06 0.6 negative manual P 35 0.3283 50 -0.26 46
IV.GAVE.EHZ. 2020-09-24T21:30:48.64 0.6 undecidable manual S 296 0.143 122 0.07 50
IV.RM33.EHZ. 2020-09-24T21:30:48.95 0.6 undecidable manual S 139 0.1619 119 -0.26 48
IV.ARRO.EHZ. 2020-09-24T21:30:47.32 0.1 undecidable manual P 257 0.2293 111 -0.25 94
IV.LNSS.HHZ. 2020-09-24T21:30:46.09 0.6 undecidable manual S 218 0.0351 158 0.33 48
IV.T1299.EHZ. 2020-09-24T21:30:46.23 0.1 undecidable manual P 89 0.1565 119 0.11 98
IV.NRCA.HHZ. 2020-09-24T21:30:46.93 0.1 positive manual P 9 0.2059 113 -0.16 96
IV.SMA1.EHZ. 2020-09-24T21:30:46.98 1.0 positive manual P 90 0.1961 114 0.09 25
IV.GAVE.EHZ. 2020-09-24T21:30:46.03 0.6 undecidable manual P 296 0.143 122 0.19 49
IV.RM33.EHZ. 2020-09-24T21:30:46.24 0.1 undecidable manual P 139 0.1619 119 0.03 100
IV.LNSS.HHZ. 2020-09-24T21:30:44.54 0.1 undecidable manual P 218 0.0351 158 0.32 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.4 0.000399 0.5 AML other m 2020-09-24T21:30:46.23
IV.LNSS.HHN. ML:1.1 0.0002395 0.58 AML other m 2020-09-24T21:30:46.36
IV.GAVE.EHN. ML:1 8.68E-5 1.68 AML other m 2020-09-24T21:30:48.97
IV.RM33.EHN. ML:0.9 6.14E-5 0.22 AML other m 2020-09-24T21:30:49.17
IV.GAVE.EHE. ML:1 8.255E-5 1.4 AML other m 2020-09-24T21:30:49.10
IV.RM33.EHE. ML:0.9 6.67E-5 0.32 AML other m 2020-09-24T21:30:49.25
IV.NRCA.HHE. ML:1.2 0.000112 0.1 AML other m 2020-09-24T21:30:50.64
IV.NRCA.HHN. ML:0.9 5.4E-5 0.7 AML other m 2020-09-24T21:30:51.54
IV.SMA1.EHE. ML:1.1 8.8648815E-5 0.2816 AML other m 2020-09-24T21:30:50.76
IV.SMA1.EHN. ML:0.8 3.771671E-5 0.2816 AML other m 2020-09-24T21:30:50.76
IV.FDMO.HHE. ML:0.5 1.210119E-5 1.536 AML other m 2020-09-24T21:30:58.87
IV.FDMO.HHN. ML:0.5 9.8688705E-6 3.1616 AML other m 2020-09-24T21:30:58.18
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