Earthquake with magnitude of ML 1.9 on date 31-10-2020 and time 02:45:14 (Italy) in region Tirreno Meridionale (MARE)

A magnitude ML 1.9 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 31-10-2020 01:45:14 (UTC)
  • 31-10-2020 02:45:14 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.934, 15.448 at 185 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.

Municipalities within 20 km from the epicenter

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
76 Km W of Lamezia Terme (70714 inhabitants)
80 Km SW of Cosenza (67546 inhabitants)
83 Km N of Messina (238439 inhabitants)
93 Km N of Reggio di Calabria (183035 inhabitants)
99 Km W of Catanzaro (90612 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 1.9 2020-10-31
01:45:14
38.9343 15.4485 185 2021-02-26
14:56:10
Bollettino Sismico Italiano INGV 85357931
Reviewed
Rev100
ML 1.8 2020-10-31
01:45:15
38.9433 15.5557 187 2020-10-31
02:44:33
Sala Sismica INGV-Roma 84302151
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-31 01:45:14 ± 0.25
Latitude 38.9343 ± 0.0207
Longitude 15.4485 ± 0.0231
Depth (km) 185 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 85357931

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2430
Semi-minor axis of confidence ellipse (meter) 1543
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 148
Circular confidence region, given by single value of horizontal uncertainty (meter) 2430
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 147
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
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) 0.21674
Epicentral distance of station farthest from the epicenter (degree) 1.1934
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 11
Type of magnitude ML
Reference to an origin 85357931
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-19 13:36:34

ML:1.8

Field Value
Value 1.8
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 84302151
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-31 02:44:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SERS.HNN. 2020-10-31T01:46:04.32 0.6 undecidable manual S 84 0.9686 148 0.15 43
XK.SELL.HHZ. 2020-10-31T01:46:03.66 0.6 undecidable manual S 87 0.9182 150 0.12 44
IV.PLAC.HHZ. 2020-10-31T01:46:02.93 0.6 undecidable manual S 122 0.9119 150 -0.54 39
IV.CET2.HHZ. 2020-10-31T01:46:01.81 0.6 undecidable manual S 33 0.7114 156 0.54 41
IV.CAR1.HHZ. 2020-10-31T01:46:00.72 0.6 undecidable manual S 61 0.6718 157 -0.17 46
IV.JOPP.HHZ. 2020-10-31T01:45:59.56 0.6 undecidable manual S 134 0.4721 163 0.31 46
IV.ISTR.HHZ. 2020-10-31T01:45:58.42 0.3 undecidable manual S 234 0.2482 171 0.36 72
IV.IST3.HHZ. 2020-10-31T01:45:57.28 0.3 undecidable manual S 232 0.2167 172 -0.67 65
IV.PIPA.HHZ. 2020-10-31T01:45:44.89 0.3 undecidable manual P 62 1.1934 142 -0.26 60
MN.TIP.HHN. 2020-10-31T01:45:43.67 0.1 undecidable manual P 76 1.0459 146 -0.28 82
IV.SERS.HNN. 2020-10-31T01:45:43.34 0.1 undecidable manual P 84 0.9686 148 -0.04 88
IV.CELI.HHE. 2020-10-31T01:45:43.62 0.1 undecidable manual P 60 0.9452 149 0.41 81
IV.PLAC.HHZ. 2020-10-31T01:45:42.99 0.1 positive manual P 122 0.9119 150 0.02 89
MN.CEL.HHE. 2020-10-31T01:45:42.15 0.1 undecidable manual P 153 0.7581 154 0.17 89
IV.GRIS.HNZ. 2020-10-31T01:45:42.58 0.3 undecidable manual P 21 0.8642 151 -0.07 67
IV.MILZ.HHZ. 2020-10-31T01:45:42.12 0.6 negative manual P 194 0.6844 156 0.57 41
XK.SELL.HHZ. 2020-10-31T01:45:42.98 1.0 undecidable manual P 87 0.9182 150 -0.04 22
XK.ALB1.HHZ. 2020-10-31T01:45:42.89 0.1 undecidable manual P 84 0.8966 150 0.02 89
IV.CAR1.HHZ. 2020-10-31T01:45:41.16 0.6 positive manual P 61 0.6718 157 -0.32 44
IV.CET2.HHZ. 2020-10-31T01:45:41.63 1.0 undecidable manual P 33 0.7114 156 -0.07 23
IV.JOPP.HHZ. 2020-10-31T01:45:40.62 0.1 undecidable manual P 134 0.4721 163 0.08 97
IV.ISTR.HHZ. 2020-10-31T01:45:39.71 0.1 undecidable manual P 234 0.2482 171 -0.14 100
IV.IST3.HHZ. 2020-10-31T01:45:39.67 0.6 undecidable manual P 232 0.2167 172 -0.12 51
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CAR1.HHN. ML:1.7 1.4477675E-5 1.12 AML other m 2020-10-31T01:46:00.30
IV.CET2.HHN. ML:2 3.1170335E-5 0.98 AML other m 2020-10-31T01:46:01.14
IV.JOPP.HHN. ML:1.7 1.374665E-5 0.48 AML other m 2020-10-31T01:46:01.60
IV.CAR1.HHE. ML:1.5 1.1359295E-5 0.22 AML other m 2020-10-31T01:46:01.88
IV.CAR1.HNE. ML:2.5 9.3335595E-5 0.6096 AML other m 2020-10-31T01:46:01.69
IV.CET2.HHE. ML:1.8 1.8670715E-5 1.28 AML other m 2020-10-31T01:46:02.21
IV.CAR1.HNN. ML:2.8 0.0001727091 0.72 AML other m 2020-10-31T01:46:02.58
IV.PLAC.HNE. ML:0 5.573554E-5 1.14 AML other m 2020-10-31T01:46:06.11
IV.PLAC.HHN. ML:1.9 1.8488085E-5 1.46 AML other m 2020-10-31T01:46:04.20
IV.PLAC.HHE. ML:1.8 1.4164135E-5 0.82 AML other m 2020-10-31T01:46:03.59
IV.PLAC.HNN. ML:2 2.938802E-5 0.76 AML other m 2020-10-31T01:46:04.76
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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