Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 16-01-2021 and time 21:29:32 (UTC) in region 4 km E Nocera Umbra (PG)

A magnitude ML 0.9 earthquake occured in region: 4 km E Nocera Umbra (PG), on

  • 16-01-2021 21:29:32 (UTC)
  • 16-01-2021 22:29:32 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.0950, 12.8350 at 9 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
Nocera Umbra PG 4 5839 5839
Valtopina PG 8 1398 7237
Serravalle di Chienti MC 10 1070 8307
Sefro MC 11 422 8729
Fiuminata MC 13 1402 10131
Pioraco MC 16 1134 11265
Gualdo Tadino PG 16 15208 26473
Muccia MC 17 915 27388
Spello PG 17 8645 36033
Monte Cavallo MC 18 145 36178
Assisi PG 18 28299 64477
Pieve Torina MC 18 1458 65935
Foligno PG 19 57155 123090
Camerino MC 20 6974 130064
Esanatoglia MC 20 2034 132098

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km NE of Foligno (57155 inhabitants)
36 Km E of Perugia (166134 inhabitants)
61 Km N of Terni (111501 inhabitants)
80 Km SW of Ancona (100861 inhabitants)
85 Km S of Fano (60888 inhabitants)
86 Km NW of Teramo (54892 inhabitants)
88 Km E of Arezzo (99543 inhabitants)
91 Km S of Pesaro (94582 inhabitants)
95 Km NW of L'Aquila (69753 inhabitants)
96 Km NE of Viterbo (67173 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 0.9 2021-01-16
21:29:32		 43.0948 12.8347 9 2021-01-16
21:42:41		 Sala Sismica INGV-Roma 86311091
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-16 21:29:32 ± 0.05
Latitude 43.0948 ± 0.0027
Longitude 12.8347 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86311091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 381
Semi-minor axis of confidence ellipse (meter) 231
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 228
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 98
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.34354
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.4
Num. used stations 28
Type of magnitude ML
Reference to an origin 86311091
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-16 21:42:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSFR.HHZ. 2021-01-16T21:29:46.06 0.3 undecidable manual S 354 38.1285 50 0.33 67
IV.NRCA.HHZ. 2021-01-16T21:29:45.72 0.3 undecidable manual S 142 36.8298 50 0.34 67
IV.EL6.EHZ. 2021-01-16T21:29:44.48 0.3 undecidable manual S 40 33.8439 50 -0.1 71
IV.CSP1.EHZ. 2021-01-16T21:29:43.69 0.3 undecidable manual S 90 29.9478 50 0.13 71
IV.APEC.HHZ. 2021-01-16T21:29:42.81 3.0 undecidable manual P -1.17 0
IV.FOSV.EHZ. 2021-01-16T21:29:41.53 0.6 undecidable manual S 345 22.9548 112 0.27 47
IV.ATCC.EHZ. 2021-01-16T21:29:40.23 0.6 undecidable manual S 303 18.6702 116 0.32 46
IV.FDMO.HHZ. 2021-01-16T21:29:40.83 0.3 undecidable manual S 107 21.4674 113 0.05 73
IV.SSFR.HHZ. 2021-01-16T21:29:40.00 0.1 undecidable manual P 354 38.1285 50 -0.22 92
IV.EL6.EHZ. 2021-01-16T21:29:39.38 0.1 undecidable manual P 40 33.8439 50 -0.17 93
IV.NRCA.HHZ. 2021-01-16T21:29:39.95 0.1 undecidable manual P 142 36.8298 50 -0.06 95
IV.CSP1.EHZ. 2021-01-16T21:29:38.75 0.1 undecidable manual P 90 29.9478 50 -0.21 93
IV.ASSB.HHZ. 2021-01-16T21:29:38.78 0.3 undecidable manual S 248 15.3735 121 -0.12 73
IV.CESI.HHZ. 2021-01-16T21:29:37.88 0.6 undecidable manual S 150 11.4774 129 0.1 49
IV.FDMO.HHZ. 2021-01-16T21:29:37.32 0.1 undecidable manual P 107 21.4674 113 -0.04 98
IV.FOSV.EHZ. 2021-01-16T21:29:37.56 0.1 undecidable manual P 345 22.9548 112 -0.07 97
IV.ASSB.HHZ. 2021-01-16T21:29:36.21 0.1 undecidable manual P 248 15.3735 121 -0.06 99
IV.ATCC.EHZ. 2021-01-16T21:29:36.82 0.1 undecidable manual P 303 18.6702 116 -0.03 99
IV.CESI.HHZ. 2021-01-16T21:29:35.65 0.1 undecidable manual P 150 11.4774 129 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHN. ML:1.0 0.000088499955 0.192 AML other m 2021-01-16T21:29:38.89
IV.ASSB.HHE. ML:0.8 0.00006405442 0.1664 AML other m 2021-01-16T21:29:40.17
IV.SSFR.HHN. ML:1.1 0.00004295 1.84 AML other m 2021-01-16T21:29:46.95
IV.SSFR.HHE. ML:1.1 0.000044200000000000004 0.2 AML other m 2021-01-16T21:29:48.12
IV.NRCA.HHN. ML:0.6 0.00001740771 0.1408 AML other m 2021-01-16T21:29:45.86
IV.NRCA.HHE. ML:0.6 0.0000144495125 0.192 AML other m 2021-01-16T21:29:46.91
IV.CESI.HHE. ML:0.4 0.0000297956 0.2048 AML other m 2021-01-16T21:29:39.36
IV.CESI.HHN. ML:0.4 0.000030309065000000002 0.256 AML other m 2021-01-16T21:29:39.15
IV.CESI.HNE. ML:1.0 0.00012117013 0.4352 AML other m 2021-01-16T21:29:38.05
IV.CESI.HNN. ML:1.0 0.00010870346 0.6912 AML other m 2021-01-16T21:29:40.86
IV.ATCC.EHE. ML:0.8 0.000053093265 0.1024 AML other m 2021-01-16T21:29:40.76
IV.ATCC.EHN. ML:0.8 0.000043882745 0.1024 AML other m 2021-01-16T21:29:40.72
IV.FDMO.HHE. ML:0.3 0.000016081335000000004 0.1536 AML other m 2021-01-16T21:29:41.29
IV.FDMO.HHN. ML:0.6 0.000026072144999999997 0.128 AML other m 2021-01-16T21:29:41.29
IV.FOSV.EHE. ML:0.6 0.000026645784999999997 1.6768 AML other m 2021-01-16T21:29:36.61
IV.FOSV.EHN. ML:0.6 0.000023449194 0.32 AML other m 2021-01-16T21:29:42.07
IV.CSP1.EHE. ML:1.6 0.0001730981 2.2016 AML other m 2021-01-16T21:29:52.73
IV.CSP1.EHN. ML:1.1 0.00006044089499999999 0.2304 AML other m 2021-01-16T21:29:43.93
IV.EL6.EHE. ML:1.2 0.000057772191 1.7024 AML other m 2021-01-16T21:29:39.70
IV.EL6.EHN. ML:1.0 0.00004106362 44.3136 AML other m 2021-01-16T21:29:38.94
IV.NRCA.HNE. ML:1.4 0.00010608785000000001 0.8576 AML other m 2021-01-16T21:29:39.74
IV.NRCA.HNN. ML:1.8 0.0002350642 1.2928 AML other m 2021-01-16T21:29:43.18
IV.SSFR.HNE. ML:1.6 0.00016080715 0.6528 AML other m 2021-01-16T21:29:59.94
IV.SSFR.HNN. ML:1.9 0.0002662371 0.7936 AML other m 2021-01-16T21:29:50.48
IV.APEC.HHE. ML:0.7 0.0000096342005 0.32 AML other m 2021-01-16T21:30:07.08
IV.APEC.HHN. ML:0.9 0.000013188332500000001 0.1408 AML other m 2021-01-16T21:29:51.24
IV.APEC.HNE. ML:2.7 0.0010460261 1.6768 AML other m 2021-01-16T21:29:57.18
IV.APEC.HNN. ML:2.7 0.0010552501 0.384 AML other m 2021-01-16T21:29:56.21
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