Earthquake with magnitude of ML 1.0 on date 22-01-2020 and time 11:55:34 (Italy) in region 5 km N Norcia (PG)

A magnitude ML 1.0 earthquake occured in region: 5 km N Norcia (PG), on

  • 22-01-2020 10:55:34 (UTC)
  • 22-01-2020 11:55:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.84, 13.09 at 13 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.

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 5 4957 4957
Preci PG 6 724 5681
Castelsantangelo sul Nera MC 8 281 5962
Visso MC 10 1107 7069
Ussita MC 12 444 7513
Sellano PG 14 1079 8592
Cerreto di Spoleto PG 15 1075 9667
Cascia PG 15 3217 12884
Monte Cavallo MC 18 145 13029
Arquata del Tronto AP 18 1178 14207
Poggiodomo PG 19 117 14324
Montegallo AP 20 523 14847

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
54 Km W of Teramo (54892 inhabitants)
60 Km NW of L'Aquila (69753 inhabitants)
64 Km E of Perugia (166134 inhabitants)
93 Km SW of Ancona (100861 inhabitants)
94 Km NE of Viterbo (67173 inhabitants)
94 Km W of Montesilvano (53738 inhabitants)
98 Km NE of Guidonia Montecelio (88673 inhabitants)
101 Km N of Tivoli (56533 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 1.0 2020-01-22
10:55:34
42.84 13.09 13 2020-07-18
21:08:24
Bollettino Sismico Italiano INGV 77076741
Reviewed
Rev100
ML 0.9 2020-01-22
10:55:34
42.85 13.09 12 2020-01-22
11:02:51
Sala Sismica INGV-Roma 75722111
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-22 10:55:34 ± 0.07
Latitude 42.84 ± 0.00
Longitude 13.09 ± 0.01
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 77076741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 442
Semi-minor axis of confidence ellipse (meter) 300
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 280
Circular confidence region, given by single value of horizontal uncertainty (meter) 440
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 96
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 16
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) 0.2626
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 75722111
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-22 11:02:51

ML:1

Field Value
Value 1
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 77076741
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-03-06 15:14:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FAGN.HHZ. 2020-01-22T10:55:48.51 3.0 undecidable manual P 0.66 0
IV.CSP1.EHZ. 2020-01-22T10:55:45.24 0.6 undecidable manual S 18 0.2626 96 0.33 45
IV.LNSS.HHZ. 2020-01-22T10:55:44.58 0.6 undecidable manual S 189 0.2419 96 0.27 46
IV.CESI.HHZ. 2020-01-22T10:55:43.40 0.3 undecidable manual S 320 0.2122 98 -0.04 72
IV.GAVE.EHZ. 2020-01-22T10:55:43.34 0.3 undecidable manual S 224 0.2086 99 0.02 72
IV.FDMO.HHZ. 2020-01-22T10:55:42.81 0.3 undecidable manual S 359 0.1943 100 -0.09 72
IV.MMO1.EHZ. 2020-01-22T10:55:42.29 0.1 undecidable manual S 72 0.1808 102 -0.23 94
IV.CSP1.EHZ. 2020-01-22T10:55:40.51 0.3 undecidable manual P 18 0.2626 96 -0.06 71
IV.MC2.EHZ. 2020-01-22T10:55:40.51 0.1 undecidable manual S 46 0.0989 126 0.23 93
IV.LNSS.HHZ. 2020-01-22T10:55:40.17 0.3 undecidable manual P 189 0.2419 96 -0.05 71
IV.MMO1.EHZ. 2020-01-22T10:55:39.12 0.3 undecidable manual P 72 0.1808 102 -0.07 72
IV.FDMO.HHZ. 2020-01-22T10:55:39.28 0.1 undecidable manual P 359 0.1943 100 -0.13 95
IV.CESI.HHZ. 2020-01-22T10:55:39.73 0.1 undecidable manual P 320 0.2122 98 0.01 97
IV.GAVE.EHZ. 2020-01-22T10:55:39.75 0.1 undecidable manual P 224 0.2086 99 0.09 96
IV.NRCA.HHZ. 2020-01-22T10:55:38.73 0.1 undecidable manual S 118 0.0189 168 -0.24 97
IV.MC2.EHZ. 2020-01-22T10:55:38.04 0.1 undecidable manual P 46 0.0989 126 0.14 96
IV.NRCA.HHZ. 2020-01-22T10:55:37.16 0.1 undecidable manual P 118 0.0189 168 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1 0.00013 0.18 AML other m 2020-01-22T10:55:38.84
IV.NRCA.HHN. ML:0.8 9.6338015E-5 0.1408 AML other m 2020-01-22T10:55:39.08
IV.GAVE.EHE. ML:1.3 0.00011055 0.18 AML other m 2020-01-22T10:55:43.67
IV.GAVE.EHN. ML:1.3 0.000121 0.2 AML other m 2020-01-22T10:55:43.59
IV.CESI.HHE. ML:0.5 1.9640036E-5 0.2624 AML other m 2020-01-22T10:55:43.85
IV.CESI.HHN. ML:0.8 3.586997E-5 0.2624 AML other m 2020-01-22T10:55:43.86
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download