Earthquake with magnitude of ML 1.7 on date 02-12-2021 and time 23:41:53 (UTC) in region 4 km NW Sant'Anatolia di Narco (PG)

A magnitude ML 1.7 earthquake occured in region: 4 km NW Sant'Anatolia di Narco (PG), on

  • 02-12-2021 23:41:53 (UTC)
  • 03-12-2021 00:41:53 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.763, 12.799 at 8 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
Sant'Anatolia di Narco PG 5 564 564
Vallo di Nera PG 5 364 928
Spoleto PG 6 38218 39146
Scheggino PG 6 461 39607
Campello sul Clitunno PG 7 2442 42049
Cerreto di Spoleto PG 12 1075 43124
Castel Ritaldi PG 12 3278 46402
Poggiodomo PG 13 117 46519
Trevi PG 13 8469 54988
Ferentillo TR 16 1913 56901
Sellano PG 18 1079 57980
Monteleone di Spoleto PG 18 599 58579
Cascia PG 18 3217 61796
Montefranco TR 19 1276 63072
Montefalco PG 19 5679 68751
Giano dell'Umbria PG 20 3846 72597
Arrone TR 20 2763 75360
Polino TR 20 233 75593

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km SE of Foligno (57155 inhabitants)
26 Km NE of Terni (111501 inhabitants)
51 Km SE of Perugia (166134 inhabitants)
67 Km NW of L'Aquila (69753 inhabitants)
69 Km NE of Viterbo (67173 inhabitants)
75 Km W of Teramo (54892 inhabitants)
85 Km N of Guidonia Montecelio (88673 inhabitants)
89 Km N of Tivoli (56533 inhabitants)
100 Km N of Roma (2864731 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 earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.7 2021-12-02
23:41:53
42.7633 12.7993 8 2021-12-02
23:56:55
Sala Sismica INGV-Roma 98076981
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-02 23:41:53 ± 0.06
Latitude 42.7633 ± 0.0027
Longitude 12.7993 ± 0.0037
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 98076981

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 300
Semi-minor axis of confidence ellipse (meter) 142
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 120
Circular confidence region, given by single value of horizontal uncertainty (meter) 300
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 70
Number of associated phases, regardless of their use for origin computation 40
Number of defining phases 38
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) 0.74194
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 19
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 21
Type of magnitude ML
Reference to an origin 98076981
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-02 23:56:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CRTC.HHZ. 2021-12-02T23:42:25.22 3.0 undecidable manual S -0.14 0
IV.VCEL.EHZ. 2021-12-02T23:42:23.94 3.0 undecidable manual S 2.19 0
IV.ARVD.HHZ. 2021-12-02T23:42:18.97 0.1 undecidable manual S 8 0.7419 50 0.61 78
IV.SSFR.HHZ. 2021-12-02T23:42:16.80 0.1 undecidable manual S 359 0.6727 50 0.48 83
IV.EL6.EHZ. 2021-12-02T23:42:14.64 0.1 undecidable manual S 21 0.607 50 0.26 88
IV.FIAM.HNZ. 2021-12-02T23:42:12.78 0.1 undecidable manual S 155 0.5477 50 0.16 91
IV.SNTG.HHZ. 2021-12-02T23:42:11.13 0.1 undecidable manual S 12 0.5018 50 -0.14 92
IV.MGAB.HHZ. 2021-12-02T23:42:11.99 0.1 undecidable manual S 287 0.5252 50 0.04 94
IV.CSP1.EHZ. 2021-12-02T23:42:09.18 0.1 undecidable manual S 42 0.4425 50 -0.32 90
IV.SMA1.EHZ. 2021-12-02T23:42:09.16 0.1 undecidable manual S 108 0.4155 50 0.45 88
IV.ATCC.EHZ. 2021-12-02T23:42:09.30 0.1 undecidable manual S 345 0.4371 50 -0.05 95
IV.ARVD.HHZ. 2021-12-02T23:42:07.39 0.1 undecidable manual P 8 0.7419 50 -0.37 84
IV.MC2.EHZ. 2021-12-02T23:42:06.34 0.1 undecidable manual S 62 0.322 50 0.42 90
IV.FDMO.HHZ. 2021-12-02T23:42:06.26 0.1 undecidable manual S 38 0.3453 50 -0.35 91
IV.SSFR.HHZ. 2021-12-02T23:42:06.44 0.1 undecidable manual P 359 0.6727 50 -0.15 89
IV.EL6.EHZ. 2021-12-02T23:42:05.43 0.1 undecidable manual P 21 0.607 50 -0.04 92
IV.FEMA.HNZ. 2021-12-02T23:42:04.05 0.1 undecidable manual S 43 0.2707 105 -0.03 99
IV.MGAB.HHZ. 2021-12-02T23:42:04.08 0.1 undecidable manual P 287 0.5252 50 0.02 94
IV.FIAM.HNZ. 2021-12-02T23:42:04.03 0.1 undecidable manual P 155 0.5477 50 -0.41 86
IV.CESI.HHZ. 2021-12-02T23:42:03.44 0.1 undecidable manual S 18 0.2536 106 0 100
IT.MTCL.HGZ. 2021-12-02T23:42:03.78 0.3 undecidable manual S 32 0.2734 105 -0.39 69
IV.NRCA.HHZ. 2021-12-02T23:42:03.21 0.1 undecidable manual S 73 0.241 107 0.21 96
IV.SNTG.HHZ. 2021-12-02T23:42:03.27 0.1 undecidable manual P 12 0.5018 50 -0.39 88
IV.ATCC.EHZ. 2021-12-02T23:42:02.29 0.1 undecidable manual P 345 0.4371 50 -0.27 91
IV.CSP1.EHZ. 2021-12-02T23:42:02.47 0.1 undecidable manual P 42 0.4425 50 -0.18 93
IV.LNSS.HHZ. 2021-12-02T23:42:02.89 0.1 undecidable manual S 132 0.2392 107 -0.02 100
IV.SMA1.EHZ. 2021-12-02T23:42:02.22 0.1 undecidable manual P 108 0.4155 50 0.03 96
IT.FOPC.HGZ. 2021-12-02T23:42:02.34 0.3 undecidable manual S 341 0.2176 109 0.21 72
IV.CESX.HHZ. 2021-12-02T23:42:01.95 0.1 undecidable manual S 225 0.2194 108 -0.25 95
IT.GNU.HGZ. 2021-12-02T23:42:00.64 0.1 undecidable manual S 284 0.1727 113 0.13 99
IV.MC2.EHZ. 2021-12-02T23:42:00.54 0.1 undecidable manual P 62 0.322 50 -0.04 98
IV.FDMO.HHZ. 2021-12-02T23:42:00.68 0.1 undecidable manual P 38 0.3453 50 -0.3 92
IV.CESI.HHZ. 2021-12-02T23:41:59.16 0.1 positive manual P 18 0.2536 106 0.01 100
IV.FEMA.HNZ. 2021-12-02T23:41:59.57 0.1 undecidable manual P 43 0.2707 105 0.06 98
IT.MTCL.HGZ. 2021-12-02T23:41:59.46 0.3 undecidable manual P 32 0.2734 105 -0.11 73
IV.NRCA.HHZ. 2021-12-02T23:41:58.98 0.1 negative manual P 73 0.241 107 0.09 98
IT.FOPC.HGZ. 2021-12-02T23:41:58.43 0.3 undecidable manual P 341 0.2176 109 0.04 75
IV.CESX.HHZ. 2021-12-02T23:41:58.41 0.1 undecidable manual P 225 0.2194 108 -0.03 100
IV.LNSS.HHZ. 2021-12-02T23:41:58.93 0.1 undecidable manual P 132 0.2392 107 0.09 98
IT.GNU.HGZ. 2021-12-02T23:41:57.99 0.1 undecidable manual P 284 0.1727 113 0.54 90
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESX.HHN. ML:1.5 0.00017851285 0.1408 AML other m 2021-12-02T23:42:02.25
IV.LNSS.HNE. ML:1.9 0.00046727725 0.2816 AML other m 2021-12-02T23:42:03.33
IV.LNSS.HHE. ML:1.9 0.0004112329 0.2304 AML other m 2021-12-02T23:42:03.33
IV.CESI.HHN. ML:2.2 0.0008074703 0.3584 AML other m 2021-12-02T23:42:03.62
IV.CESI.HHE. ML:1.9 0.0004364685 0.256 AML other m 2021-12-02T23:42:03.76
IV.LNSS.HHN. ML:1.8 0.0004043341 0.192 AML other m 2021-12-02T23:42:03.49
IV.LNSS.HNN. ML:1.9 0.0004339353 0.6272 AML other m 2021-12-02T23:42:03.49
IV.NRCA.HHE. ML:1.2 9.0103935E-5 0.2048 AML other m 2021-12-02T23:42:03.42
IV.CESX.HHE. ML:1.6 0.0002187615 0.1536 AML other m 2021-12-02T23:42:02.14
IV.NRCA.HHN. ML:1.1 7.547194E-5 0.1408 AML other m 2021-12-02T23:42:03.37
IV.FDMO.HHN. ML:1.5 0.000103277885 0.3584 AML other m 2021-12-02T23:42:06.59
IV.FDMO.HHE. ML:1.6 0.0001300914 0.1792 AML other m 2021-12-02T23:42:06.65
IV.CESI.HNE. ML:1.8 0.00035187695 0.2688 AML other m 2021-12-02T23:42:03.78
IV.CESI.HNN. ML:2.2 0.0007530915 0.3584 AML other m 2021-12-02T23:42:03.80
IV.SMA1.EHE. ML:1.5 8.959874E-5 0.6912 AML other m 2021-12-02T23:42:09.58
IV.SMA1.EHN. ML:1.7 0.0001445304 0.6784 AML other m 2021-12-02T23:42:09.79
IV.ATCC.EHE. ML:1.6 0.000105333635 0.128 AML other m 2021-12-02T23:42:09.86
IV.ATCC.HNE. ML:1.6 9.950206E-5 0.128 AML other m 2021-12-02T23:42:09.86
IV.ATCC.HNN. ML:1.6 0.00010982315 0.448 AML other m 2021-12-02T23:42:09.80
IV.CSP1.EHE. ML:1.9 0.00021890195 1.2544 AML other m 2021-12-02T23:42:10.21
IV.CSP1.EHN. ML:1.8 0.00017872947 0.2816 AML other m 2021-12-02T23:42:09.57
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