Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 03-01-2021 and time 23:29:58 (Italy) in region 1 km NW Castelsantangelo sul Nera (MC)

A magnitude ML 1.1 earthquake occured in region: 1 km NW Castelsantangelo sul Nera (MC), on

  • 03-01-2021 22:29:58 (UTC)
  • 03-01-2021 23:29:58 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9010, 13.1440 at 7 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.

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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
Castelsantangelo sul Nera MC 1 281 281
Ussita MC 5 444 725
Visso MC 6 1107 1832
Preci PG 9 724 2556
Bolognola MC 13 142 2698
Norcia PG 13 4957 7655
Acquacanina MC 15 121 7776
Montemonaco AP 15 604 8380
Fiastra MC 15 559 8939
Monte Cavallo MC 16 145 9084
Fiordimonte MC 16 202 9286
Montegallo AP 17 523 9809
Montefortino FM 17 1178 10987
Sellano PG 18 1079 12066
Pieve Torina MC 18 1458 13524
Pievebovigliana MC 19 866 14390
Arquata del Tronto AP 19 1178 15568
Amandola FM 20 3629 19197
Sarnano MC 20 3264 22461

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Foligno (57155 inhabitants)
53 Km NW of Teramo (54892 inhabitants)
55 Km NE of Terni (111501 inhabitants)
65 Km NW of L'Aquila (69753 inhabitants)
66 Km E of Perugia (166134 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
93 Km W of Montesilvano (53738 inhabitants)
100 Km W of Pescara (121014 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 1.1 2021-01-03
22:29:58		 42.9008 13.1442 7 2021-07-12
16:54:57		 Bollettino Sismico Italiano INGV 86851541
Reviewed
Rev100 		ML 1.4 2021-01-03
22:29:58		 42.9173 13.1478 5 2021-01-03
22:38:21		 Sala Sismica INGV-Roma 86000851
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-03 22:29:58 ± 0.11
Latitude 42.9008 ± 0.0045
Longitude 13.1442 ± 0.0049
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86851541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 468
Semi-minor axis of confidence ellipse (meter) 219
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 32
Circular confidence region, given by single value of horizontal uncertainty (meter) 470.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 107
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.38221
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.5
Num. used stations 5
Type of magnitude ML
Reference to an origin 86851541
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-05 11:11:18

ML:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 86000851
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-03 22:38:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CADC.HNZ. 2021-01-03T22:31:12.10 3.0 undecidable manual Sn 1.4 0
IV.IVPL.HHZ. 2021-01-03T22:31:01.10 3.0 undecidable manual Pg 9.17 0
IV.BOZZ.EHZ. 2021-01-03T22:30:59.26 3.0 undecidable manual Sn -1.17 0
IV.PIPA.HHZ. 2021-01-03T22:30:57.05 3.0 negative manual Pn 4.88 0
IV.MCEL.HHZ. 2021-01-03T22:30:37.00 3.0 positive manual Pn 0.45 0
IV.ASSB.HHZ. 2021-01-03T22:30:12.35 0.6 undecidable manual S 292 42.4242 50 -0.4 44
IV.MF5.EHN. 2021-01-03T22:30:08.95 0.6 undecidable manual S 69 27.3504 105 0.99 36
IV.PF6.EHN. 2021-01-03T22:30:07.37 0.6 undecidable manual S 9 26.5512 105 -0.34 46
IV.MML1.HNE. 2021-01-03T22:30:07.96 0.6 undecidable manual S 329 27.4503 105 -0.02 49
IV.CSP1.EHE. 2021-01-03T22:30:06.09 0.6 undecidable manual S 13 21.7671 109 0 50
IV.CESI.HNZ. 2021-01-03T22:30:06.57 0.6 undecidable manual S 301 22.6551 108 0.19 48
IV.ASSB.HHZ. 2021-01-03T22:30:06.36 0.6 undecidable manual P 292 42.4242 50 -0.21 46
IV.LRP.EHZ. 2021-01-03T22:30:06.37 3.0 positive manual P -0.86 0
IV.MAON.HHZ. 2021-01-03T22:30:05.00 3.0 undecidable manual S -1.12 0
IV.FDMO.HHZ. 2021-01-03T22:30:04.19 0.6 undecidable manual S 343 15.7731 115 0.03 50
IV.MF5.EHN. 2021-01-03T22:30:04.19 0.3 undecidable manual P 69 27.3504 105 0.38 68
IV.MML1.HNE. 2021-01-03T22:30:03.60 0.3 undecidable manual P 329 27.4503 105 -0.22 71
IV.PF6.EHN. 2021-01-03T22:30:03.81 0.3 undecidable manual P 9 26.5512 105 0.15 72
IV.MMO1.EHZ. 2021-01-03T22:30:03.65 0.3 undecidable manual S 91 14.874 116 -0.23 72
IV.CSP1.EHE. 2021-01-03T22:30:02.74 0.1 undecidable manual P 13 21.7671 109 0.01 99
IV.FEMA.HNE. 2021-01-03T22:30:02.73 0.6 undecidable manual S 312 10.2786 126 0.23 49
IV.CESI.HNZ. 2021-01-03T22:30:02.98 0.3 undecidable manual P 301 22.6551 108 0.08 73
IV.MMO1.EHZ. 2021-01-03T22:30:01.33 0.1 undecidable manual P 91 14.874 116 -0.12 99
IV.NRCA.HHZ. 2021-01-03T22:30:01.92 0.3 undecidable manual S 198 7.881 133 0.06 76
IV.FDMO.HHZ. 2021-01-03T22:30:01.61 0.3 undecidable manual P 343 15.7731 115 0 76
IV.FEMA.HNE. 2021-01-03T22:30:00.92 0.3 undecidable manual P 312 10.2786 126 0.27 72
IV.RDP.HHZ. 2021-01-03T22:30:00.29 3.0 positive manual P 0.5 0
IV.MC2.EHZ. 2021-01-03T22:30:00.50 0.3 undecidable manual S 72 3.7962 152 -0.5 69
IV.NRCA.HHZ. 2021-01-03T22:30:00.40 0.1 positive manual P 198 7.881 133 0.11 100
IV.MC2.EHZ. 2021-01-03T22:29:59.65 0.1 undecidable manual P 72 3.7962 152 -0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.2 0.00027800000000000004 0.12 AML other m 2021-01-03T22:30:02.50
IV.NRCA.HHE. ML:1.4 0.0004740272 0.128 AML other m 2021-01-03T22:30:02.50
IV.NRCA.HNE. ML:1.4 0.0004311915 0.1152 AML other m 2021-01-03T22:30:02.66
IV.FDMO.HHN. ML:0.2 0.000016637738000000002 0.1664 AML other m 2021-01-03T22:30:04.38
IV.FDMO.HHE. ML:0.5 0.000028895090000000003 0.192 AML other m 2021-01-03T22:30:07.97
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