Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 22-01-2021 and time 18:37:35 (Italy) in region 3 km NE Monte Cavallo (MC)

A magnitude ML 1.5 earthquake occured in region: 3 km NE Monte Cavallo (MC), on

  • 22-01-2021 17:37:35 (UTC)
  • 22-01-2021 18:37:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.0230, 13.0150 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
Monte Cavallo MC 3 145 145
Pieve Torina MC 4 1458 1603
Fiordimonte MC 6 202 1805
Muccia MC 7 915 2720
Pievebovigliana MC 7 866 3586
Serravalle di Chienti MC 8 1070 4656
Fiastra MC 12 559 5215
Visso MC 12 1107 6322
Acquacanina MC 13 121 6443
Ussita MC 13 444 6887
Camerino MC 13 6974 13861
Sefro MC 15 422 14283
Preci PG 16 724 15007
Sellano PG 16 1079 16086
Pioraco MC 18 1134 17220
Bolognola MC 18 142 17362
Castelsantangelo sul Nera MC 18 281 17643
Fiuminata MC 20 1402 19045

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km E of Foligno (57155 inhabitants)
52 Km E of Perugia (166134 inhabitants)
59 Km NE of Terni (111501 inhabitants)
69 Km NW of Teramo (54892 inhabitants)
78 Km SW of Ancona (100861 inhabitants)
81 Km NW of L'Aquila (69753 inhabitants)
91 Km S of Fano (60888 inhabitants)
99 Km S of Pesaro (94582 inhabitants)
100 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
Bulletin
Rev1000 		ML 1.5 2021-01-22
17:37:35		 43.0227 13.0148 7 2021-07-12
16:54:57		 Bollettino Sismico Italiano INGV 86943031
Reviewed
Rev100 		ML 1.5 2021-01-22
17:37:35		 43.0195 13.0235 6 2021-01-22
17:44:08		 Sala Sismica INGV-Roma 86465351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-22 17:37:35 ± 0.07
Latitude 43.0227 ± 0.0045
Longitude 13.0148 ± 0.0037
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 86943031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 382
Semi-minor axis of confidence ellipse (meter) 315
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 177
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) 57
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 25
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) 0.47844
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 86943031
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-08 16:28:05

ML:1.5

Field Value
Value 1.5
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 86465351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-22 17:44:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2021-01-22T17:37:53.27 0.3 undecidable manual S 354 53.1024 50 0.4 64
IV.CING.HNZ. 2021-01-22T17:37:49.47 0.3 undecidable manual S 20 41.8248 50 -0.39 65
IT.ARRO.EHZ. 2021-01-22T17:37:45.96 3.0 undecidable manual P 0
IV.MMO1.EHZ. 2021-01-22T17:37:45.35 0.6 undecidable manual S 118 28.749 103 -0.16 47
IV.GUMA.HHZ. 2021-01-22T17:37:45.33 0.3 undecidable manual S 80 26.3514 104 0.64 62
IV.ARVD.HHZ. 2021-01-22T17:37:45.33 1.0 undecidable manual P 354 53.1024 50 -0.1 23
IV.ASSB.HHZ. 2021-01-22T17:37:45.42 0.6 undecidable manual S 275 28.9488 103 -0.15 47
IV.NRCA.HHZ. 2021-01-22T17:37:43.60 0.3 undecidable manual S 159 22.4553 106 0.21 70
IT.FOSV.EHZ. 2021-01-22T17:37:43.24 3.0 undecidable manual Pg 0
IV.CING.HNZ. 2021-01-22T17:37:43.76 0.6 undecidable manual P 20 41.8248 50 0.07 46
IV.MF5.EHN. 2021-01-22T17:37:42.24 0.3 undecidable manual P 96 36.3414 100 -0.42 65
IV.EL6.EHE. 2021-01-22T17:37:42.37 0.6 undecidable manual P 12 34.743 101 0.02 47
IV.PF6.EHZ. 2021-01-22T17:37:42.16 0.3 undecidable manual S 49 19.3695 109 -0.2 70
IV.ATCC.EHE. 2021-01-22T17:37:42.20 0.3 undecidable manual P 301 35.3424 101 -0.26 68
IV.ASSB.HHZ. 2021-01-22T17:37:41.06 0.6 undecidable manual P 275 28.9488 103 -0.16 47
IV.CSP1.EHZ. 2021-01-22T17:37:41.90 0.6 undecidable manual S 63 17.1717 111 0.24 47
IV.MMO1.EHZ. 2021-01-22T17:37:40.90 0.1 negative manual P 118 28.749 103 -0.28 91
IV.GUMA.HHZ. 2021-01-22T17:37:40.90 0.1 undecidable manual P 80 26.3514 104 0.19 93
IV.PF6.EHZ. 2021-01-22T17:37:39.28 0.3 undecidable manual P 49 19.3695 109 -0.08 72
IV.CSP1.EHZ. 2021-01-22T17:37:39.06 0.1 negative manual P 63 17.1717 111 0.1 96
IV.NRCA.HHZ. 2021-01-22T17:37:39.95 0.1 undecidable manual P 159 22.4553 106 -0.01 97
IV.CESI.HHZ. 2021-01-22T17:37:39.54 0.6 undecidable manual S 258 9.1797 126 0.35 46
IV.FDMO.HHZ. 2021-01-22T17:37:38.20 0.6 undecidable manual S 75 6.0939 138 -0.19 48
IV.CESI.HHZ. 2021-01-22T17:37:37.86 0.1 positive manual P 258 9.1797 126 0.33 93
IT.MTCL.HGZ. 2021-01-22T17:37:37.56 0.3 undecidable manual S 201 3.3966 153 -0.29 71
IT.FEMA.HNZ. 2021-01-22T17:37:37.44 3.0 undecidable manual Pg 0
IV.FDMO.HHZ. 2021-01-22T17:37:37.06 0.1 positive manual P 75 6.0939 138 -0.01 100
IT.MTCL.HGZ. 2021-01-22T17:37:36.79 0.1 undecidable manual P 201 3.3966 153 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:1.4 0.00037580745 0.2048 AML other m 2021-01-22T17:37:40.68
IV.CESI.HHN. ML:1.6 0.0007264999999999999 0.14 AML other m 2021-01-22T17:37:39.73
IV.CESI.HNN. ML:1.6 0.0007005000000000001 0.22 AML other m 2021-01-22T17:37:39.73
IV.CESI.HNE. ML:1.4 0.0003740574 0.192 AML other m 2021-01-22T17:37:39.66
IV.CSP1.EHE. ML:1.5 0.00030734665 0.2048 AML other m 2021-01-22T17:37:43.55
IV.CSP1.EHN. ML:1.6 0.00038757995 0.256 AML other m 2021-01-22T17:37:43.25
IV.NRCA.HHE. ML:1.4 0.0001654091 0.2048 AML other m 2021-01-22T17:37:43.94
IV.NRCA.HHN. ML:1.5 0.00022499999999999997 0.14 AML other m 2021-01-22T17:37:43.90
IV.FDMO.HHN. ML:0.0 0.0009184572499999999 0.2048 AML other m 2021-01-22T17:37:38.37
IV.FDMO.HHE. ML:0.0 0.00078486 0.1664 AML other m 2021-01-22T17:37:38.66
IV.NRCA.HNN. ML:1.5 0.0002112589 0.128 AML other m 2021-01-22T17:37:43.90
IV.NRCA.HNE. ML:1.4 0.00018016025000000001 0.2176 AML other m 2021-01-22T17:37:43.94
IV.ARRO.EHE. ML:1.0 0.000025030639 0.2432 AML other m 2021-01-22T17:37:53.36
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