Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 31-01-2021 and time 00:16:33 (Italy) in region 3 km SE Fiordimonte (MC)

A magnitude ML 1.1 earthquake occured in region: 3 km SE Fiordimonte (MC), on

  • 30-01-2021 23:16:33 (UTC)
  • 31-01-2021 00:16:33 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.0120, 13.1140 at 10 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.

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
Fiordimonte MC 3 202 202
Fiastra MC 4 559 761
Acquacanina MC 5 121 882
Pievebovigliana MC 6 866 1748
Pieve Torina MC 6 1458 3206
Ussita MC 8 444 3650
Visso MC 9 1107 4757
Monte Cavallo MC 9 145 4902
Bolognola MC 9 142 5044
Muccia MC 10 915 5959
Castelsantangelo sul Nera MC 13 281 6240
Camerino MC 14 6974 13214
Serravalle di Chienti MC 15 1070 14284
Sarnano MC 16 3264 17548
Cessapalombo MC 16 512 18060
Preci PG 16 724 18784
Caldarola MC 17 1823 20607
Camporotondo di Fiastrone MC 18 563 21170
Gualdo MC 19 815 21985
Serrapetrona MC 19 966 22951
San Ginesio MC 20 3498 26449
Belforte del Chienti MC 20 1886 28335

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Foligno (57155 inhabitants)
60 Km E of Perugia (166134 inhabitants)
62 Km NW of Teramo (54892 inhabitants)
63 Km NE of Terni (111501 inhabitants)
75 Km SW of Ancona (100861 inhabitants)
77 Km NW of L'Aquila (69753 inhabitants)
93 Km S of Fano (60888 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 1.1 2021-01-30
23:16:33		 43.0123 13.1143 10 2021-01-30
23:26:03		 Sala Sismica INGV-Roma 86727951
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-30 23:16:33 ± 0.06
Latitude 43.0123 ± 0.0036
Longitude 13.1143 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86727951

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 342
Semi-minor axis of confidence ellipse (meter) 274
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 171
Circular confidence region, given by single value of horizontal uncertainty (meter) 340.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 55
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.03148
Epicentral distance of station farthest from the epicenter (degree) 0.50182
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 86727951
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-30 23:26:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2021-01-30T23:16:52.25 1.0 undecidable manual S 346 55.6998 50 0.71 19
IV.CING.HHE. 2021-01-30T23:16:47.54 0.3 undecidable manual S 9 40.8258 50 -0.04 71
IV.GAVE.EHZ. 2021-01-30T23:16:47.11 0.1 undecidable manual S 207 39.7269 50 -0.19 92
IV.ASSB.HHZ. 2021-01-30T23:16:46.46 0.1 undecidable manual S 275 37.1295 50 -0.13 93
IV.ARVD.HHZ. 2021-01-30T23:16:43.91 0.1 undecidable manual P 346 55.6998 50 -0.17 89
IV.MNTT.EHZ. 2021-01-30T23:16:42.06 0.3 positive manual P 82 39.4272 50 0.49 64
IV.ASSB.HHZ. 2021-01-30T23:16:41.02 0.3 negative manual P 275 37.1295 50 -0.19 69
IV.MMO1.EHZ. 2021-01-30T23:16:41.55 0.1 undecidable manual S 126 21.3675 114 -0.43 90
IV.CING.HHE. 2021-01-30T23:16:41.70 0.1 undecidable manual P 9 40.8258 50 -0.09 93
IV.GUMA.HNN. 2021-01-30T23:16:41.59 0.1 undecidable manual S 73 18.7701 117 0.42 90
IV.CESI.HHZ. 2021-01-30T23:16:40.74 0.1 undecidable manual S 267 17.0718 119 0.1 97
IV.MML1.HNN. 2021-01-30T23:16:40.34 0.1 undecidable manual S 314 16.0728 121 -0.02 99
IV.GAVE.EHZ. 2021-01-30T23:16:40.31 3.0 undecidable manual P 207 39.7269 50 -1.31 0
IV.MC2.EHZ. 2021-01-30T23:16:39.40 0.1 undecidable manual S 152 12.7761 127 0.01 100
IV.GUMA.HNN. 2021-01-30T23:16:38.18 0.1 undecidable manual P 73 18.7701 117 0.09 97
IV.CSP1.EHZ. 2021-01-30T23:16:38.79 0.1 undecidable manual S 40 11.4774 130 -0.25 95
IV.FEMA.HNE. 2021-01-30T23:16:38.29 0.1 undecidable manual S 223 7.6812 141 0.19 97
IV.MMO1.EHZ. 2021-01-30T23:16:38.38 0.6 positive manual P 126 21.3675 114 -0.17 48
IV.MC2.EHZ. 2021-01-30T23:16:37.11 0.1 negative manual P 152 12.7761 127 0.05 99
IV.CESI.HHZ. 2021-01-30T23:16:37.94 0.1 positive manual P 267 17.0718 119 0.16 96
IV.MML1.HNN. 2021-01-30T23:16:37.79 0.3 undecidable manual P 314 16.0728 121 0.17 72
IV.CSP1.EHZ. 2021-01-30T23:16:36.86 0.1 positive manual P 40 11.4774 130 0 100
IV.FEMA.HNE. 2021-01-30T23:16:36.65 0.1 undecidable manual P 223 7.6812 141 0.33 94
IV.FDMO.HHZ. 2021-01-30T23:16:36.91 0.1 undecidable manual S 321 3.4965 160 -0.47 92
IT.MTCL.HGE. 2021-01-30T23:16:36.67 0.1 undecidable manual P 258 9.5793 135 0.1 98
IV.FDMO.HHZ. 2021-01-30T23:16:35.79 0.1 undecidable manual P 321 3.4965 160 -0.11 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSP1.EHN. ML:1.4 0.0003305 0.16 AML other m 2021-01-30T23:16:38.98
IV.CSP1.EHE. ML:1.3 0.0002482673 0.256 AML other m 2021-01-30T23:16:39.42
IV.CESI.HHE. ML:0.9 0.00007011752 0.2048 AML other m 2021-01-30T23:16:40.98
IV.CESI.HHN. ML:1.0 0.00007917736 0.2816 AML other m 2021-01-30T23:16:41.03
IV.FDMO.HHE. ML:1.0 0.0001879112 0.1152 AML other m 2021-01-30T23:16:37.32
IV.FDMO.HHN. ML:1.3 0.00040724070000000003 0.2176 AML other m 2021-01-30T23:16:37.29
IV.CESI.HNE. ML:1.1 0.000111469055 0.2304 AML other m 2021-01-30T23:16:40.87
IV.GAVE.EHE. ML:1.3 0.000063185145 0.1536 AML other m 2021-01-30T23:16:47.37
IV.GAVE.EHN. ML:1.1 0.00004398141 0.1792 AML other m 2021-01-30T23:16:48.57
IV.ASSB.HHE. ML:0.8 0.000027207015 0.1408 AML other m 2021-01-30T23:16:47.24
IV.ASSB.HHN. ML:0.8 0.00002365335 0.0768 AML other m 2021-01-30T23:16:47.25
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