Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 20-09-2020 and time 05:25:36 (Italy) in region 4 km SW Monte Cavallo (MC)

A magnitude ML 1.5 earthquake occured in region: 4 km SW Monte Cavallo (MC), on

  • 20-09-2020 03:25:36 (UTC)
  • 20-09-2020 05:25:36 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9620, 12.9730 at 11 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.

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
Monte Cavallo MC 4 145 145
Sellano PG 9 1079 1224
Visso MC 10 1107 2331
Preci PG 11 724 3055
Pieve Torina MC 11 1458 4513
Serravalle di Chienti MC 12 1070 5583
Fiordimonte MC 13 202 5785
Ussita MC 14 444 6229
Pievebovigliana MC 15 866 7095
Muccia MC 15 915 8010
Cerreto di Spoleto PG 16 1075 9085
Castelsantangelo sul Nera MC 17 281 9366
Fiastra MC 17 559 9925
Acquacanina MC 18 121 10046

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km E of Foligno (57155 inhabitants)
50 Km E of Perugia (166134 inhabitants)
52 Km NE of Terni (111501 inhabitants)
69 Km W of Teramo (54892 inhabitants)
76 Km NW of L'Aquila (69753 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
93 Km NE of Viterbo (67173 inhabitants)
98 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
Bulletin
Rev1000 		ML 1.5 2020-09-20
03:25:36		 42.962 12.9727 11 2021-02-26
14:55:56		 Bollettino Sismico Italiano INGV 83194131
Reviewed
Rev100 		ML 1.5 2020-09-20
03:25:36		 42.9613 12.9733 11 2020-09-20
03:57:42		 Sala Sismica INGV-Roma 83044141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-20 03:25:36 ± 0.04
Latitude 42.9620 ± 0.0027
Longitude 12.9727 ± 0.0025
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 83194131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 268
Semi-minor axis of confidence ellipse (meter) 241
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 17
Circular confidence region, given by single value of horizontal uncertainty (meter) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 51
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 43
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.03777
Epicentral distance of station farthest from the epicenter (degree) 0.41189
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 83194131
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-09-24 10:14:21

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 83044141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-20 03:57:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FOSV.HNE. 2020-09-20T03:25:50.27 0.6 undecidable manual S 335 40.7259 50 0.28 45
IV.MOMA.HHZ. 2020-09-20T03:25:49.09 0.6 undecidable manual S 242 37.1295 50 0.05 47
IV.ATCC.EHZ. 2020-09-20T03:25:49.23 0.6 undecidable manual S 313 36.6411 50 0.34 45
IV.GUMA.HHZ. 2020-09-20T03:25:48.20 0.3 undecidable manual S 69 31.4463 50 0.68 61
IV.GAVE.EHZ. 2020-09-20T03:25:47.24 0.6 undecidable manual S 192 30.6471 50 -0.05 48
IV.SNTG.HHZ. 2020-09-20T03:25:47.75 0.6 undecidable manual S 355 32.6451 50 -0.08 48
IV.MMO1.EHZ. 2020-09-20T03:25:46.86 0.6 undecidable manual S 103 29.5482 50 -0.16 47
IV.MDAR.HNN. 2020-09-20T03:25:46.76 0.6 undecidable manual S 28 29.0487 50 -0.12 47
IV.ASSB.HHZ. 2020-09-20T03:25:46.17 0.3 undecidable manual S 289 26.9508 50 -0.16 71
IV.ARRO.EHZ. 2020-09-20T03:25:45.14 0.3 undecidable manual P 202 45.7209 50 0.01 71
IV.PF6.EHZ. 2020-09-20T03:25:45.97 0.6 undecidable manual S 43 26.5512 50 -0.23 47
IT.FOPC.HGZ. 2020-09-20T03:25:45.20 0.6 undecidable manual S 272 21.867 50 0.23 47
IV.CSP1.EHZ. 2020-09-20T03:25:45.41 0.3 undecidable manual S 53 23.6541 50 -0.04 73
IV.SEF1.HNN. 2020-09-20T03:25:44.57 0.6 undecidable manual S 354 20.5683 50 -0.05 49
IV.EL6.EHZ. 2020-09-20T03:25:44.60 0.1 undecidable manual P 14 42.0246 50 0.03 94
IV.MC2.EHZ. 2020-09-20T03:25:44.25 0.6 undecidable manual S 108 18.4704 50 0.2 47
IV.FOSV.HNE. 2020-09-20T03:25:44.46 0.6 undecidable manual P 335 40.7259 50 0.1 47
IV.MF5.EHZ. 2020-09-20T03:25:44.53 0.3 undecidable manual P 86 39.627 50 0.34 67
IV.SNTG.HHZ. 2020-09-20T03:25:43.02 0.3 undecidable manual P 355 32.6451 50 -0.09 71
IV.ATCC.EHZ. 2020-09-20T03:25:43.80 0.3 undecidable manual P 313 36.6411 50 0.08 71
IV.NRCA.HHZ. 2020-09-20T03:25:43.67 0.3 undecidable manual S 141 18.2706 50 -0.34 69
IV.MOMA.HHZ. 2020-09-20T03:25:43.76 0.6 undecidable manual P 242 37.1295 50 -0.05 47
IV.MML1.HNE. 2020-09-20T03:25:43.48 0.3 undecidable manual S 360 16.7721 50 -0.13 73
IV.GUMA.HHZ. 2020-09-20T03:25:43.17 0.1 positive manual P 69 31.4463 50 0.24 92
IV.MDAR.HNN. 2020-09-20T03:25:42.17 0.6 undecidable manual P 28 29.0487 50 -0.39 45
IV.ASSB.HHZ. 2020-09-20T03:25:42.09 0.1 positive manual P 289 26.9508 50 -0.16 95
IV.MMO1.EHZ. 2020-09-20T03:25:42.50 0.1 positive manual P 103 29.5482 50 -0.14 94
IV.PF6.EHZ. 2020-09-20T03:25:42.04 0.6 undecidable manual P 43 26.5512 50 -0.13 48
IV.GAVE.EHZ. 2020-09-20T03:25:42.77 0.1 undecidable manual P 192 30.6471 50 -0.03 96
IV.FDMO.HHZ. 2020-09-20T03:25:42.23 0.3 undecidable manual S 48 12.4764 132 -0.21 72
IV.MC2.EHZ. 2020-09-20T03:25:41.29 0.3 undecidable manual P 108 18.4704 50 0.36 69
IV.FEMA.HNZ. 2020-09-20T03:25:41.09 0.3 undecidable manual S 90 6.2937 151 0.01 76
IT.FOPC.HGZ. 2020-09-20T03:25:41.53 0.3 undecidable manual P 272 21.867 50 0.07 73
IV.CSP1.EHZ. 2020-09-20T03:25:41.71 0.1 undecidable manual P 53 23.6541 50 -0.03 98
IV.CESI.HHZ. 2020-09-20T03:25:41.38 0.6 undecidable manual S 311 7.2927 147 0.12 49
IT.MTCL.HGZ. 2020-09-20T03:25:40.51 0.6 undecidable manual S 32 4.1958 159 -0.26 48
IV.FDMO.HHZ. 2020-09-20T03:25:40.00 0.1 negative manual P 48 12.4764 132 0 100
IV.SEF1.HNN. 2020-09-20T03:25:40.70 0.6 undecidable manual P 354 20.5683 50 -0.56 43
IV.NRCA.HHZ. 2020-09-20T03:25:40.70 0.1 undecidable manual P 141 18.2706 50 -0.21 95
IV.MML1.HNE. 2020-09-20T03:25:40.65 0.1 negative manual P 360 16.7721 50 -0.02 99
IT.MTCL.HGZ. 2020-09-20T03:25:39.04 0.3 undecidable manual P 32 4.1958 159 0.01 76
IV.FEMA.HNZ. 2020-09-20T03:25:39.36 0.1 negative manual P 90 6.2937 151 0.15 98
IV.CESI.HHZ. 2020-09-20T03:25:39.48 0.1 positive manual P 311 7.2927 147 0.16 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HNE. ML:1.7 0.0007149999999999999 0.1 AML other m 2020-09-20T03:25:41.49
IV.CESI.HHE. ML:1.8 0.0008825 0.1 AML other m 2020-09-20T03:25:41.49
IV.CESI.HHN. ML:2.0 0.00149 0.1 AML other m 2020-09-20T03:25:41.55
IV.CESI.HNN. ML:2.1 0.00172 0.12 AML other m 2020-09-20T03:25:41.50
IV.FDMO.HHE. ML:1.4 0.00028849999999999997 0.22 AML other m 2020-09-20T03:25:42.47
IV.FDMO.HHN. ML:1.5 0.00030649999999999997 0.1 AML other m 2020-09-20T03:25:42.60
IV.NRCA.HHN. ML:1.3 0.000152 0.48 AML other m 2020-09-20T03:25:43.76
IV.NRCA.HHE. ML:1.2 0.0001245 0.08 AML other m 2020-09-20T03:25:44.83
IV.CSP1.EHN. ML:1.8 0.0004290000000000001 1.34 AML other m 2020-09-20T03:25:45.72
IV.CSP1.EHE. ML:1.7 0.000301 0.46 AML other m 2020-09-20T03:25:45.75
IV.ASSB.HHE. ML:1.3 0.00009995 0.28 AML other m 2020-09-20T03:25:46.35
IV.ASSB.HHN. ML:1.5 0.000154 0.16 AML other m 2020-09-20T03:25:46.42
IV.GAVE.EHE. ML:1.6 0.00016649999999999998 0.8 AML other m 2020-09-20T03:25:47.73
IV.SNTG.HHN. ML:1.1 0.0000562 0.4 AML other m 2020-09-20T03:25:48.46
IV.SNTG.HHE. ML:1.1 0.00004865 0.16 AML other m 2020-09-20T03:25:48.45
IV.GUMA.HHE. ML:1.6 0.00017449999999999999 0.22 AML other m 2020-09-20T03:25:48.32
IV.GUMA.HHN. ML:1.6 0.00019250000000000002 0.24 AML other m 2020-09-20T03:25:48.36
IV.GAVE.EHN. ML:1.5 0.0001505 0.18 AML other m 2020-09-20T03:25:48.69
IV.MOMA.HHE. ML:1.2 0.0000649 0.18 AML other m 2020-09-20T03:25:50.43
IV.MOMA.HHN. ML:1.1 0.0000431 1.28 AML other m 2020-09-20T03:25:50.73
IV.EL6.EHN. ML:1.5 0.00009285000000000001 0.46 AML other m 2020-09-20T03:25:51.15
IV.EL6.EHE. ML:1.5 0.0001105 0.48 AML other m 2020-09-20T03:25:51.15
IV.ARRO.EHE. ML:1.1 0.0000328 0.94 AML other m 2020-09-20T03:25:52.83
IV.ARRO.EHN. ML:1.1 0.00003515 0.16 AML other m 2020-09-20T03:25:53.05
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