Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 26-12-2020 and time 21:32:26 (Italy) in region 4 km N Sellano (PG)

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

  • 26-12-2020 20:32:26 (UTC)
  • 26-12-2020 21:32:26 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9290, 12.9400 at 11 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Sellano PG 4 1079 1079
Monte Cavallo MC 9 145 1224
Preci PG 10 724 1948
Visso MC 12 1107 3055
Cerreto di Spoleto PG 12 1075 4130
Pieve Torina MC 16 1458 5588
Serravalle di Chienti MC 16 1070 6658
Ussita MC 16 444 7102
Trevi PG 17 8469 15571
Fiordimonte MC 17 202 15773
Castelsantangelo sul Nera MC 18 281 16054
Campello sul Clitunno PG 18 2442 18496
Vallo di Nera PG 19 364 18860
Pievebovigliana MC 19 866 19726
Muccia MC 19 915 20641
Foligno PG 19 57155 77796
Norcia PG 20 4957 82753

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
49 Km E of Perugia (166134 inhabitants)
69 Km W of Teramo (54892 inhabitants)
74 Km NW of L'Aquila (69753 inhabitants)
89 Km NE of Viterbo (67173 inhabitants)
90 Km SW of Ancona (100861 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
Bulletin
Rev1000 		ML 1.2 2020-12-26
20:32:26		 42.9287 12.9402 11 2021-02-26
14:56:18		 Bollettino Sismico Italiano INGV 87078451
Reviewed
Rev100 		ML 1.6 2020-12-26
20:32:26		 42.9327 12.9387 12 2020-12-26
20:36:07		 Sala Sismica INGV-Roma 85741561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-26 20:32:26 ± 0.05
Latitude 42.9287 ± 0.0027
Longitude 12.9402 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87078451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 303
Semi-minor axis of confidence ellipse (meter) 289
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 57
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 61
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
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) 0.07824
Epicentral distance of station farthest from the epicenter (degree) 0.41729
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 21
Type of magnitude ML
Reference to an origin 87078451
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-12 11:57:05

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 85741561
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-26 20:36:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2020-12-26T20:32:41.80 0.3 undecidable manual S 16 46.3203 50 0.33 67
IV.MTRA.EHZ. 2020-12-26T20:32:40.30 0.3 undecidable manual S 117 41.7249 50 0.06 71
IV.MOMA.HNZ. 2020-12-26T20:32:38.01 0.6 undecidable manual S 245 33.1446 50 0.08 48
IV.CSP1.EHZ. 2020-12-26T20:32:36.50 0.3 undecidable manual S 50 28.0497 50 -0.09 73
IV.GAVE.EHZ. 2020-12-26T20:32:36.20 0.3 undecidable manual S 188 26.4513 50 0.04 74
IV.ASSB.HHZ. 2020-12-26T20:32:35.80 0.3 undecidable manual S 299 26.0517 50 -0.26 70
IV.MTRA.EHZ. 2020-12-26T20:32:34.48 0.3 undecidable manual P 117 41.7249 50 0.01 72
IV.EL6.EHZ. 2020-12-26T20:32:34.99 0.3 undecidable manual P 16 46.3203 50 -0.19 69
IV.NRCA.HHZ. 2020-12-26T20:32:33.50 0.3 undecidable manual S 127 17.6712 122 -0.29 71
IV.FDMO.HHZ. 2020-12-26T20:32:33.30 0.3 undecidable manual S 45 16.872 123 -0.28 71
IV.MOMA.HNZ. 2020-12-26T20:32:33.21 1.0 undecidable manual P 245 33.1446 50 0.07 24
IV.CSP1.EHZ. 2020-12-26T20:32:32.37 0.1 undecidable manual P 50 28.0497 50 0 99
IV.GAVE.EHZ. 2020-12-26T20:32:32.18 0.1 undecidable manual P 188 26.4513 50 0.06 98
IV.ASSB.HHZ. 2020-12-26T20:32:31.90 0.1 positive manual P 299 26.0517 50 -0.16 96
IV.CESI.HHZ. 2020-12-26T20:32:31.50 0.3 undecidable manual S 341 8.9799 141 0.02 76
IT.MTCL.HGZ. 2020-12-26T20:32:31.20 0.3 undecidable manual S 34 8.6802 141 -0.23 73
IV.FEMA.HNZ. 2020-12-26T20:32:31.80 0.3 undecidable manual S 67 9.6792 138 0.15 74
IV.FDMO.HHZ. 2020-12-26T20:32:30.66 0.1 undecidable manual P 45 16.872 123 0.03 100
IV.NRCA.HHZ. 2020-12-26T20:32:30.70 0.1 negative manual P 127 17.6712 122 -0.05 100
IV.FEMA.HNZ. 2020-12-26T20:32:29.78 0.3 undecidable manual P 67 9.6792 138 0.27 72
IV.CESI.HHZ. 2020-12-26T20:32:29.61 0.1 undecidable manual P 341 8.9799 141 0.19 98
IT.MTCL.HGZ. 2020-12-26T20:32:29.52 0.1 undecidable manual P 34 8.6802 141 0.14 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:1.2 0.00018352665000000002 0.192 AML other m 2020-12-26T20:32:32.20
IV.CESI.HHE. ML:1.1 0.00017099999999999998 0.06 AML other m 2020-12-26T20:32:31.85
IV.NRCA.HHN. ML:1.8 0.0005635 0.14 AML other m 2020-12-26T20:32:33.83
IV.NRCA.HNN. ML:1.8 0.0005335 0.16 AML other m 2020-12-26T20:32:33.83
IV.NRCA.HHE. ML:1.7 0.00039336725 0.1152 AML other m 2020-12-26T20:32:33.92
IV.NRCA.HNE. ML:1.6 0.0003613608 0.1408 AML other m 2020-12-26T20:32:33.92
IV.CESI.HNN. ML:1.2 0.000193875625 0.1664 AML other m 2020-12-26T20:32:31.81
IV.CESI.HNE. ML:1.1 0.000153064855 0.0768 AML other m 2020-12-26T20:32:31.85
IV.FDMO.HHE. ML:1.0 0.000091704765 0.1792 AML other m 2020-12-26T20:32:33.41
IV.FDMO.HHN. ML:1.2 0.00012138109999999999 0.1792 AML other m 2020-12-26T20:32:33.49
IV.ASSB.HHN. ML:1.0 0.000047639710000000005 0.0896 AML other m 2020-12-26T20:32:36.35
IV.ASSB.HHE. ML:1.0 0.000051777975 0.0512 AML other m 2020-12-26T20:32:36.12
IV.GAVE.EHE. ML:1.2 0.00009616608 0.1408 AML other m 2020-12-26T20:32:36.75
IV.GAVE.EHN. ML:1.2 0.00007794980499999999 0.1152 AML other m 2020-12-26T20:32:36.75
IV.GAVE.HNE. ML:1.3 0.0001028886985 0.1408 AML other m 2020-12-26T20:32:36.75
IV.CSP1.EHN. ML:1.3 0.00010191051500000001 0.1664 AML other m 2020-12-26T20:32:37.22
IV.CSP1.EHE. ML:1.2 0.00007365737 0.1024 AML other m 2020-12-26T20:32:37.36
IV.MTRA.EHN. ML:1.0 0.00003460872 0.2432 AML other m 2020-12-26T20:32:41.48
IV.MTRA.EHE. ML:0.9 0.000024834285000000003 0.1792 AML other m 2020-12-26T20:32:40.86
IV.EL6.EHE. ML:1.1 0.00003429374 0.1792 AML other m 2020-12-26T20:32:42.23
IV.EL6.EHN. ML:1.2 0.000039502990000000004 0.2048 AML other m 2020-12-26T20:32:43.14
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