Earthquake with magnitude of ML 1.2 on date 14-10-2021 and time 02:47:17 (Italy) in region 4 km S Norcia (PG)

A magnitude ML 1.2 earthquake occured in region: 4 km S Norcia (PG), on

  • 14-10-2021 00:47:17 (UTC)
  • 14-10-2021 02:47:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.761, 13.085 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
Norcia PG 4 4957 4957
Cascia PG 8 3217 8174
Poggiodomo PG 13 117 8291
Preci PG 14 724 9015
Accumoli RI 15 667 9682
Cerreto di Spoleto PG 15 1075 10757
Castelsantangelo sul Nera MC 16 281 11038
Monteleone di Spoleto PG 16 599 11637
Cittareale RI 17 482 12119
Arquata del Tronto AP 17 1178 13297
Vallo di Nera PG 18 364 13661
Visso MC 19 1107 14768
Sellano PG 19 1079 15847

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km SE of Foligno (57155 inhabitants)
42 Km NE of Terni (111501 inhabitants)
52 Km W of Teramo (54892 inhabitants)
52 Km NW of L'Aquila (69753 inhabitants)
69 Km SE of Perugia (166134 inhabitants)
89 Km E of Viterbo (67173 inhabitants)
90 Km NE of Guidonia Montecelio (88673 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
92 Km N of Tivoli (56533 inhabitants)
98 Km W of Pescara (121014 inhabitants)
100 Km W of Chieti (51815 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 1.2 2021-10-14
00:47:17
42.7612 13.0852 11 2021-10-14
00:59:57
Sala Sismica INGV-Roma 96522421
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-14 00:47:17 ± 0.06
Latitude 42.7612 ± 0.0036
Longitude 13.0852 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96522421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 418
Semi-minor axis of confidence ellipse (meter) 325
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 273
Circular confidence region, given by single value of horizontal uncertainty (meter) 420
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.41998
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 96522421
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-14 00:59:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
OT.TAR1.HHZ. 2021-10-14T00:49:13.26 3.0 undecidable manual Sg 7.88 0
IX.COL3.HHZ.02 2021-10-14T00:48:34.17 3.0 undecidable manual Sn -2.02 0
OT.TAR1.HHZ. 2021-10-14T00:48:29.09 3.0 negative manual Pg 10.9 0
IV.PAOL.HHZ. 2021-10-14T00:48:23.25 3.0 undecidable manual Sg 2.16 0
IV.GRIS.EHZ. 2021-10-14T00:48:11.03 3.0 undecidable manual Pn -4.49 0
IV.ZEN8.EHZ. 2021-10-14T00:48:08.04 3.0 undecidable manual Pn -2.02 0
IX.SCL3.EHZ.02 2021-10-14T00:48:02.23 3.0 positive manual Pn -0.68 0
OT.OT17.EHZ. 2021-10-14T00:47:51.72 3.0 positive manual Pn -1.04 0
IV.RIBO.EHZ.01 2021-10-14T00:47:48.23 3.0 undecidable manual Pg 3.27 0
IV.TRIF.CHZ. 2021-10-14T00:47:45.84 3.0 undecidable manual Pn -0.89 0
IV.SACS.HHZ. 2021-10-14T00:47:32.25 3.0 undecidable manual P -2.69 0
IV.ASSB.HHZ. 2021-10-14T00:47:32.74 0.3 undecidable manual S 312 0.42 50 0.28 66
IV.CSP1.EHZ. 2021-10-14T00:47:30.21 0.3 undecidable manual S 15 0.3417 50 0.07 70
IV.ARRO.EHZ. 2021-10-14T00:47:28.95 0.6 undecidable manual S 232 0.2968 50 0.14 47
IV.CESI.HNE. 2021-10-14T00:47:28.25 0.3 undecidable manual S 332 0.277 50 0.03 72
IV.FDMO.HHE. 2021-10-14T00:47:27.85 0.3 undecidable manual S 0 0.2752 50 -0.31 68
IV.ASSB.HHZ. 2021-10-14T00:47:26.69 0.1 undecidable manual P 312 0.42 50 0.58 82
IV.MTRA.EHN. 2021-10-14T00:47:26.78 0.6 undecidable manual S 91 0.2284 50 0 49
IV.MMO1.EHZ. 2021-10-14T00:47:26.63 0.1 undecidable manual S 52 0.2248 50 -0.04 97
IV.T1299.HNE. 2021-10-14T00:47:25.83 0.3 undecidable manual S 131 0.1925 116 0.14 71
IV.TERO.HHZ. 2021-10-14T00:47:25.69 3.0 undecidable manual Pn -1.89 0
IV.GAVE.EHZ. 2021-10-14T00:47:24.31 0.3 undecidable manual S 244 0.1565 121 -0.15 72
IV.CSP1.EHZ. 2021-10-14T00:47:24.63 0.1 undecidable manual P 15 0.3417 50 -0.14 93
IV.LNSS.HHZ. 2021-10-14T00:47:24.39 0.1 undecidable manual S 192 0.1619 120 -0.25 94
IV.CESI.HNE. 2021-10-14T00:47:23.69 0.1 undecidable manual P 332 0.277 50 0.03 96
IV.FDMO.HHE. 2021-10-14T00:47:23.34 0.1 undecidable manual P 0 0.2752 50 -0.28 91
IV.SMA1.EHE. 2021-10-14T00:47:23.39 0.1 undecidable manual P 125 0.2257 50 0.62 84
IV.RM33.EHE. 2021-10-14T00:47:23.32 0.3 undecidable manual P 159 0.2698 50 -0.21 69
IV.ARRO.EHZ. 2021-10-14T00:47:23.76 0.1 undecidable manual P 232 0.2968 50 -0.24 92
IV.T1299.HNE. 2021-10-14T00:47:22.47 0.1 undecidable manual P 131 0.1925 116 0.28 93
IV.NRCA.HHZ. 2021-10-14T00:47:22.07 0.1 undecidable manual S 16 0.0755 141 -0.01 100
IV.MMO1.EHZ. 2021-10-14T00:47:22.53 0.1 undecidable manual P 52 0.2248 50 -0.23 93
IV.MTRA.EHN. 2021-10-14T00:47:22.46 0.3 undecidable manual P 91 0.2284 50 -0.37 68
IV.LNSS.HHZ. 2021-10-14T00:47:21.51 0.1 positive manual P 192 0.1619 120 -0.08 97
IV.GAVE.EHZ. 2021-10-14T00:47:21.53 0.1 undecidable manual P 244 0.1565 121 0.05 98
IV.NRCA.HHZ. 2021-10-14T00:47:20.25 0.1 positive manual P 16 0.0755 141 0.14 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHN. ML:1.4 0.0002125 0.14 AML other m 2021-10-14T00:47:24.71
IV.GAVE.EHE. ML:1.2 0.000136553815 0.2 AML other m 2021-10-14T00:47:24.53
IV.GAVE.EHN. ML:1.4 0.00019031725 0.14 AML other m 2021-10-14T00:47:24.92
IV.LNSS.HHE. ML:1.3 0.00017085984 0.1 AML other m 2021-10-14T00:47:24.66
IV.NRCA.HHE. ML:1.9 0.00104988875 0.14 AML other m 2021-10-14T00:47:22.30
IV.NRCA.HHN. ML:1.8 0.000975986 0.12 AML other m 2021-10-14T00:47:22.13
IV.NRCA.HNE. ML:2 0.001432892 0.35 AML other m 2021-10-14T00:47:22.35
IV.NRCA.HNN. ML:1.9 0.0010554875 0.34 AML other m 2021-10-14T00:47:22.13
IV.LNSS.HNE. ML:1.3 0.0001543353 0.1 AML other m 2021-10-14T00:47:24.66
IV.LNSS.HNN. ML:1.4 0.00022492145 0.15 AML other m 2021-10-14T00:47:24.79
IV.GAVE.HNE. ML:1.2 0.00012066875 0.14 AML other m 2021-10-14T00:47:25.23
IV.GAVE.HNN. ML:0.9 7.197570445E-5 0.15 AML other m 2021-10-14T00:47:24.91
IV.ARRO.EHE. ML:1 4.496539E-5 1.84 AML other m 2021-10-14T00:47:30.03
IV.ARRO.EHN. ML:0.8 2.36188155E-5 1.06 AML other m 2021-10-14T00:47:29.52
IV.CSP1.EHE. ML:1.2 5.411415E-5 0.26 AML other m 2021-10-14T00:47:31.09
IV.CSP1.EHN. ML:1.1 4.593786E-5 0.4 AML other m 2021-10-14T00:47:30.74
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