Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 02-08-2021 and time 01:44:04 (Italy) in region 1 km E Fiordimonte (MC)

A magnitude ML 1.3 earthquake occured in region: 1 km E Fiordimonte (MC), on

  • 01-08-2021 23:44:04 (UTC)
  • 02-08-2021 01:44:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0340, 13.1070 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.

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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
Fiordimonte MC 1 202 202
Pievebovigliana MC 4 866 1068
Fiastra MC 4 559 1627
Pieve Torina MC 5 1458 3085
Acquacanina MC 6 121 3206
Muccia MC 8 915 4121
Monte Cavallo MC 10 145 4266
Ussita MC 10 444 4710
Bolognola MC 11 142 4852
Visso MC 11 1107 5959
Camerino MC 12 6974 12933
Serravalle di Chienti MC 13 1070 14003
Cessapalombo MC 15 512 14515
Caldarola MC 15 1823 16338
Castelsantangelo sul Nera MC 16 281 16619
Sarnano MC 16 3264 19883
Camporotondo di Fiastrone MC 17 563 20446
Serrapetrona MC 17 966 21412
Sefro MC 18 422 21834
Preci PG 18 724 22558
Belforte del Chienti MC 18 1886 24444
San Ginesio MC 19 3498 27942
Pioraco MC 19 1134 29076
Gualdo MC 19 815 29891

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Foligno (57155 inhabitants)
59 Km E of Perugia (166134 inhabitants)
64 Km NW of Teramo (54892 inhabitants)
65 Km NE of Terni (111501 inhabitants)
73 Km SW of Ancona (100861 inhabitants)
80 Km NW of L'Aquila (69753 inhabitants)
90 Km S of Fano (60888 inhabitants)
99 Km S of Pesaro (94582 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 1.3 2021-08-01
23:44:04		 43.0338 13.1072 10 2021-08-01
23:49:01		 Sala Sismica INGV-Roma 93537091
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-01 23:44:04 ± 0.05
Latitude 43.0338 ± 0.0027
Longitude 13.1072 ± 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 93537091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 310
Semi-minor axis of confidence ellipse (meter) 307
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 252
Circular confidence region, given by single value of horizontal uncertainty (meter) 310.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 103
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.09173
Epicentral distance of station farthest from the epicenter (degree) 0.34714
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 93537091
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-01 23:49:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2021-08-01T23:44:17.04 0.6 undecidable manual S 272 36.3414 50 0.04 48
IV.CING.HHZ. 2021-08-01T23:44:17.83 0.6 undecidable manual S 11 38.5281 50 0.24 46
IV.EL6.EHZ. 2021-08-01T23:44:16.35 0.6 undecidable manual S 359 32.745 50 0.31 46
IV.NRCA.HHZ. 2021-08-01T23:44:12.85 0.6 undecidable manual S 179 22.2555 114 -0.09 49
IV.CING.HHZ. 2021-08-01T23:44:11.69 0.1 undecidable manual P 11 38.5281 50 -0.38 89
IV.CESI.HHZ. 2021-08-01T23:44:11.30 0.6 undecidable manual S 259 16.7721 120 0.06 49
IV.EL6.EHZ. 2021-08-01T23:44:11.09 1.0 negative manual P 359 32.745 50 -0.08 24
IV.ASSB.HHZ. 2021-08-01T23:44:11.64 0.6 negative manual P 272 36.3414 50 -0.09 48
IV.MC2.EHZ. 2021-08-01T23:44:10.82 0.6 undecidable manual S 154 15.0738 123 0.07 50
IV.MML1.EHZ. 2021-08-01T23:44:10.31 0.6 undecidable manual S 309 14.0748 125 -0.14 49
IV.NRCA.HHZ. 2021-08-01T23:44:09.40 1.0 negative manual P 179 22.2555 114 0.02 25
IV.CSP1.EHZ. 2021-08-01T23:44:09.38 0.6 undecidable manual S 51 10.1787 134 -0.02 50
IV.MC2.EHZ. 2021-08-01T23:44:08.26 1.0 undecidable manual P 154 15.0738 123 0.14 24
IV.CESI.HHZ. 2021-08-01T23:44:08.48 0.1 undecidable manual P 259 16.7721 120 0.08 98
IV.CSP1.EHZ. 2021-08-01T23:44:07.40 0.1 positive manual P 51 10.1787 134 0.06 100
IV.MML1.EHZ. 2021-08-01T23:44:07.96 0.6 negative manual P 309 14.0748 125 0.01 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSP1.EHE. ML:1.3 0.00023349999999999998 1.28 AML other m 2021-08-01T23:44:10.83
IV.CSP1.EHN. ML:1.3 0.000236 1.48 AML other m 2021-08-01T23:44:11.02
IV.NRCA.HHN. ML:1.0 0.00007189999999999999 0.94 AML other m 2021-08-01T23:44:13.29
IV.NRCA.HHE. ML:1.1 0.0000858 0.46 AML other m 2021-08-01T23:44:15.49
IV.EL6.EHN. ML:1.5 0.0001485 0.42 AML other m 2021-08-01T23:44:19.14
IV.EL6.EHE. ML:1.4 0.00010475 1.56 AML other m 2021-08-01T23:44:23.03
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