Earthquake with magnitude of ML 1.0 on date 02-10-2021 and time 23:29:47 (UTC) in region 6 km N Posta (RI)

A magnitude ML 1.0 earthquake occured in region: 6 km N Posta (RI), on

  • 02-10-2021 23:29:47 (UTC)
  • 03-10-2021 01:29:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.575, 13.076 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Posta RI 6 694 694
Borbona RI 8 617 1311
Cittareale RI 8 482 1793
Leonessa RI 9 2435 4228
Monteleone di Spoleto PG 13 599 4827
Micigliano RI 14 127 4954
Montereale AQ 15 2581 7535
Cascia PG 17 3217 10752
Antrodoco RI 17 2588 13340
Poggio Bustone RI 18 2055 15395
Cagnano Amiterno AQ 18 1369 16764
Cantalice RI 18 2755 19519
Amatrice RI 19 2657 22176
Borgo Velino RI 19 972 23148
Polino TR 19 233 23381
Poggiodomo PG 19 117 23498
Rivodutri RI 19 1253 24751
Capitignano AQ 19 665 25416
Accumoli RI 20 667 26083

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Terni (111501 inhabitants)
36 Km NW of L'Aquila (69753 inhabitants)
52 Km SE of Foligno (57155 inhabitants)
52 Km W of Teramo (54892 inhabitants)
70 Km NE of Guidonia Montecelio (88673 inhabitants)
72 Km NE of Tivoli (56533 inhabitants)
82 Km E of Viterbo (67173 inhabitants)
82 Km SE of Perugia (166134 inhabitants)
88 Km W of Montesilvano (53738 inhabitants)
90 Km NE of Roma (2864731 inhabitants)
93 Km W of Chieti (51815 inhabitants)
94 Km W of Pescara (121014 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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 2021-10-02
23:29:47
42.5752 13.0762 12 2021-10-02
23:35:53
Sala Sismica INGV-Roma 96151851
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-02 23:29:47 ± 0.07
Latitude 42.5752 ± 0.0036
Longitude 13.0762 ± 0.0037
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 96151851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 385
Semi-minor axis of confidence ellipse (meter) 193
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 26
Circular confidence region, given by single value of horizontal uncertainty (meter) 380
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 97
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.37232
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 96151851
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-02 23:35:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.HAGA.HHZ. 2021-10-02T23:31:26.70 3.0 undecidable manual Pg 16.23 0
IV.MRGE.HHZ. 2021-10-02T23:31:21.21 3.0 undecidable manual Pg 12.42 0
CH.MUGIO.HHZ. 2021-10-02T23:31:04.83 3.0 undecidable manual Pg 9.21 0
IV.ILOS.HHZ. 2021-10-02T23:31:00.83 3.0 positive manual Pg 6.24 0
IV.EFIU.HHZ. 2021-10-02T23:31:00.20 3.0 negative manual Pn -3.82 0
IV.CMIS.HHZ. 2021-10-02T23:30:45.66 3.0 undecidable manual Sn -1.57 0
IV.ZEN8.EHZ. 2021-10-02T23:30:44.98 3.0 undecidable manual Pn 2.22 0
IV.FIR.HHZ. 2021-10-02T23:30:40.95 3.0 undecidable manual Sn -2.9 0
TV.SF04.EHZ. 2021-10-02T23:30:26.17 3.0 undecidable manual S -0.45 0
IV.TREM.HHZ. 2021-10-02T23:30:25.98 3.0 negative manual Pg 6.13 0
IV.FIR.HHZ. 2021-10-02T23:30:22.29 3.0 negative manual Pg 2.78 0
IV.MURB.HHZ. 2021-10-02T23:30:16.87 3.0 undecidable manual S -0.38 0
TV.SF04.EHZ. 2021-10-02T23:30:08.33 3.0 undecidable manual P -1.5 0
IV.ARVD.HHZ. 2021-10-02T23:30:06.18 3.0 negative manual P -0.54 0
IV.FDMO.HHZ. 2021-10-02T23:30:04.58 3.0 undecidable manual S -1.01 0
IV.MMO1.EHZ. 2021-10-02T23:30:01.66 0.3 undecidable manual S 30 0.3723 92 0.29 71
IV.FIAM.HHZ. 2021-10-02T23:29:59.15 0.6 undecidable manual S 174 0.3085 92 -0.32 48
IV.CSP1.EHZ. 2021-10-02T23:29:58.26 3.0 undecidable manual P -0.85 0
IV.NRCA.HHZ. 2021-10-02T23:29:57.69 0.3 undecidable manual S 6 0.2599 93 -0.34 69
IV.SMA1.EHZ. 2021-10-02T23:29:56.15 0.3 undecidable manual S 74 0.1988 95 -0.07 75
IV.ARRO.EHZ. 2021-10-02T23:29:56.99 0.3 undecidable manual S 271 0.2284 94 -0.11 75
IV.TERO.HHZ. 2021-10-02T23:29:55.43 3.0 undecidable manual P -0.91 0
IV.GAVE.EHZ. 2021-10-02T23:29:55.54 0.3 undecidable manual S 311 0.1781 97 -0.06 75
IV.T1299.EHZ. 2021-10-02T23:29:55.17 0.3 undecidable manual S 69 0.1628 99 0.01 76
IV.MMO1.EHZ. 2021-10-02T23:29:55.68 0.6 positive manual P 30 0.3723 92 0.02 49
IV.FIAM.HHZ. 2021-10-02T23:29:54.72 0.6 undecidable manual P 174 0.3085 92 0.15 48
IV.RM33.EHZ. 2021-10-02T23:29:53.76 0.3 undecidable manual S 123 0.1214 111 -0.22 74
IV.ARRO.EHZ. 2021-10-02T23:29:53.34 0.3 undecidable manual P 271 0.2284 94 0.14 73
IV.NRCA.HHZ. 2021-10-02T23:29:53.66 0.1 positive manual P 6 0.2599 93 -0.08 98
IV.SMA1.EHZ. 2021-10-02T23:29:52.85 0.3 positive manual P 74 0.1988 95 0.17 74
IV.GAVE.EHZ. 2021-10-02T23:29:52.45 0.3 negative manual P 311 0.1781 97 0.12 75
IV.T1299.EHZ. 2021-10-02T23:29:52.23 0.1 undecidable manual P 69 0.1628 99 0.15 100
IV.LNSS.HHZ. 2021-10-02T23:29:52.03 0.6 undecidable manual S 316 0.0378 155 -0.15 51
IV.RM33.EHZ. 2021-10-02T23:29:51.46 0.6 undecidable manual P 123 0.1214 111 0.06 51
IV.LNSS.HHZ. 2021-10-02T23:29:50.51 0.3 undecidable manual P 316 0.0378 155 0.15 77
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.3 0.000265 0.08 AML other m 2021-10-02T23:29:52.32
IV.LNSS.HHN. ML:1 0.0001475 1.12 AML other m 2021-10-02T23:29:52.40
IV.RM33.EHE. ML:0.8 6.75E-5 0.28 AML other m 2021-10-02T23:29:54.15
IV.RM33.EHN. ML:0.7 4.33E-5 0.82 AML other m 2021-10-02T23:29:54.58
IV.GAVE.EHE. ML:0.9 5.805E-5 0.18 AML other m 2021-10-02T23:29:55.59
IV.GAVE.EHN. ML:0.9 5.87E-5 0.36 AML other m 2021-10-02T23:29:55.65
IV.SMA1.EHE. ML:0.9 5.48E-5 0.6 AML other m 2021-10-02T23:29:56.44
IV.SMA1.EHN. ML:1 5.985E-5 0.26 AML other m 2021-10-02T23:29:56.68
IV.ARRO.EHE. ML:0.7 3.01E-5 1.24 AML other m 2021-10-02T23:29:57.26
IV.ARRO.EHN. ML:0.8 4.245E-5 0.24 AML other m 2021-10-02T23:29:58.14
IV.NRCA.HHE. ML:1.2 7.055E-5 0.56 AML other m 2021-10-02T23:29:58.37
IV.NRCA.HHN. ML:1.1 5.985E-5 0.1 AML other m 2021-10-02T23:29:58.52
IV.FDMO.HHN. ML:0.6 1.215E-5 1.58 AML other m 2021-10-02T23:30:06.95
IV.FDMO.HHE. ML:0.8 1.295E-5 0.88 AML other m 2021-10-02T23:30:06.47
IV.MURB.HHE. ML:1.9 9.63E-5 0.32 AML other m 2021-10-02T23:30:19.64
IV.MURB.HHN. ML:1.7 6.465E-5 0.3 AML other m 2021-10-02T23:30:19.82
IV.FIR.HHE. ML:3 0.0002825 0.06 AML other m 2021-10-02T23:30:24.54
IV.FIR.HHN. ML:3 0.0002785 0.64 AML other m 2021-10-02T23:30:31.37
IV.ZEN8.EHN. ML:2.9 4.975E-5 0.5 AML other m 2021-10-02T23:30:47.77
IV.ZEN8.EHE. ML:2.6 2.49E-5 1.1 AML other m 2021-10-02T23:30:47.58
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