Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 28-11-2021 and time 22:19:54 (UTC) in region 5 km SE Preci (PG)

A magnitude ML 1.2 earthquake occured in region: 5 km SE Preci (PG), on

  • 28-11-2021 22:19:54 (UTC)
  • 28-11-2021 23:19:54 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8560, 13.0930 at 11 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Preci PG 5 724 724
Castelsantangelo sul Nera MC 7 281 1005
Norcia PG 7 4957 5962
Visso MC 8 1107 7069
Ussita MC 11 444 7513
Sellano PG 14 1079 8592
Cerreto di Spoleto PG 15 1075 9667
Cascia PG 17 3217 12884
Monte Cavallo MC 17 145 13029
Bolognola MC 19 142 13171
Arquata del Tronto AP 19 1178 14349
Montegallo AP 20 523 14872
Montemonaco AP 20 604 15476

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Foligno (57155 inhabitants)
49 Km NE of Terni (111501 inhabitants)
55 Km W of Teramo (54892 inhabitants)
61 Km NW of L'Aquila (69753 inhabitants)
64 Km E of Perugia (166134 inhabitants)
92 Km SW of Ancona (100861 inhabitants)
94 Km W of Montesilvano (53738 inhabitants)
94 Km NE of Viterbo (67173 inhabitants)
100 Km NE of Guidonia Montecelio (88673 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 1.2 2021-11-28
22:19:54		 42.8558 13.0932 11 2021-11-28
22:34:30		 Sala Sismica INGV-Roma 97921271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-28 22:19:54 ± 0.07
Latitude 42.8558 ± 0.0036
Longitude 13.0932 ± 0.0049
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97921271

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 394
Semi-minor axis of confidence ellipse (meter) 157
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) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 95
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.28688
Number of stations at which the event was observed 34
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 97921271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-28 22:34:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
RF.GEPF.HHZ. 2021-11-28T22:21:42.03 3.0 undecidable manual Sg 12.36 0
IV.VOBA.EHZ. 2021-11-28T22:21:38.63 3.0 undecidable manual Sg 11.97 0
IV.SARZ.HHZ. 2021-11-28T22:21:30.87 3.0 undecidable manual Sn -0.08 0
ST.CARE.HNZ. 2021-11-28T22:21:04.70 3.0 undecidable manual Pg 13.35 0
IV.MTGR.HHZ. 2021-11-28T22:21:04.73 3.0 negative manual Pg 11.52 0
IX.COL3.HHE.02 2021-11-28T22:21:01.48 3.0 undecidable manual Sg 8 0
IV.MCRV.HHN. 2021-11-28T22:21:00.47 3.0 undecidable manual Sg 10.74 0
IX.SCL3.EHN.02 2021-11-28T22:20:56.63 3.0 undecidable manual Sn 0.92 0
IV.FIU.EHE. 2021-11-28T22:20:55.12 3.0 undecidable manual Sn -1.8 0
IX.CMP3.EHE.02 2021-11-28T22:20:52.84 3.0 undecidable manual Sn 1.78 0
IV.ORZI.HHN. 2021-11-28T22:20:51.24 3.0 positive manual Pg 8.07 0
IV.MAGO.CHE. 2021-11-28T22:20:51.13 3.0 undecidable manual Sg 6.96 0
IX.RSF3.HHN.02 2021-11-28T22:20:45.33 3.0 undecidable manual Sn -1.34 0
IV.STAL.HHZ. 2021-11-28T22:20:43.14 3.0 negative manual Pn -1.17 0
FR.AJAC.HHZ.00 2021-11-28T22:20:42.93 3.0 undecidable manual Pg 6.75 0
IV.CRND.HNZ. 2021-11-28T22:20:40.94 3.0 undecidable manual Pn 1.35 0
IX.SRN3.HHN.02 2021-11-28T22:20:37.26 3.0 positive manual Pg 10.29 0
OT.OT17.EHZ. 2021-11-28T22:20:25.83 3.0 positive manual Pg 9.54 0
IV.MMUR.HNZ. 2021-11-28T22:20:22.85 3.0 undecidable manual Sg 2.28 0
IX.CMP3.EHZ.02 2021-11-28T22:20:20.30 3.0 negative manual Pn -2.37 0
IV.CAFE.HHN. 2021-11-28T22:20:19.62 3.0 positive manual Pn -0.45 0
IV.BLLA.EHZ. 2021-11-28T22:20:17.25 3.0 positive manual Pn 1.27 0
IV.LAV9.HHE. 2021-11-28T22:20:16.21 3.0 undecidable manual Sn 1.76 0
IV.LAV9.HHN. 2021-11-28T22:20:03.81 3.0 positive manual P 1.71 0
IV.MMO1.EHZ. 2021-11-28T22:20:01.76 0.3 undecidable manual S 76 19.5693 50 -0.13 71
IV.FDMO.HHZ. 2021-11-28T22:20:01.86 0.6 undecidable manual S 359 20.0688 50 -0.15 48
IV.SMA1.EHE. 2021-11-28T22:20:00.76 1.0 undecidable manual P 142 31.8459 50 0.24 23
IV.FEMA.HNE. 2021-11-28T22:20:00.01 0.6 undecidable manual S 343 12.2766 132 0.09 48
IV.MTRA.EHN. 2021-11-28T22:20:00.15 1.0 undecidable manual P 114 27.0507 50 0.37 22
IV.GAVE.HNE. 2021-11-28T22:19:59.45 0.6 undecidable manual P 222 24.3534 50 0.09 47
IV.LNSS.HNZ. 2021-11-28T22:19:59.99 0.6 undecidable manual P 189 28.3494 50 0 48
IV.MC2.EHZ. 2021-11-28T22:19:59.69 0.6 undecidable manual S 52 9.879 138 0.35 47
IV.CSP1.EHZ. 2021-11-28T22:19:59.82 0.6 undecidable manual P 19 27.75 50 -0.06 48
IV.RMP.HHN. 2021-11-28T22:19:58.25 3.0 negative manual P -1.6 0
IV.CESI.HHZ. 2021-11-28T22:19:58.97 0.1 positive manual P 317 22.5552 50 -0.12 96
IV.MMO1.EHZ. 2021-11-28T22:19:58.45 0.6 undecidable manual P 76 19.5693 50 -0.18 47
IV.FDMO.HHZ. 2021-11-28T22:19:58.56 0.1 positive manual P 359 20.0688 50 -0.14 95
IV.NRCA.HHZ. 2021-11-28T22:19:57.95 0.3 undecidable manual S 145 2.997 165 -0.2 71
IV.MC2.EHZ. 2021-11-28T22:19:57.39 0.6 positive manual P 52 9.879 138 0.23 47
IV.FEMA.HNE. 2021-11-28T22:19:57.56 1.0 undecidable manual P 343 12.2766 132 0.06 24
IV.NRCA.HHZ. 2021-11-28T22:19:56.50 0.1 undecidable manual P 145 2.997 165 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:0.9 0.00013783829999999998 0.0768 AML other m 2021-11-28T22:19:58.65
IV.NRCA.HHN. ML:1.5 0.000502 1.92 AML other m 2021-11-28T22:19:58.02
IV.NRCA.HNE. ML:1.0 0.00015181065 0.1152 AML other m 2021-11-28T22:19:57.98
IV.NRCA.HNN. ML:1.5 0.0004936815 0.0768 AML other m 2021-11-28T22:19:58.02
IV.MC2.EHE. ML:1.3 0.000244418405 0.3072 AML other m 2021-11-28T22:20:00.58
IV.MC2.EHN. ML:1.3 0.000256424025 0.1792 AML other m 2021-11-28T22:20:00.63
IV.FDMO.HHE. ML:0.9 0.00005372461 2.112 AML other m 2021-11-28T22:20:01.90
IV.FDMO.HHN. ML:0.6 0.000029186575 1.7024 AML other m 2021-11-28T22:20:01.73
IV.CESI.HNE. ML:1.3 0.00012444329000000002 0.6144 AML other m 2021-11-28T22:20:01.06
IV.CESI.HNN. ML:1.4 0.00016675014999999998 0.896 AML other m 2021-11-28T22:20:02.59
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