Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 20-03-2020 and time 11:08:37 (UTC) in region Costa Siciliana centro settentrionale (Palermo)

A magnitude ML 1.8 earthquake occured in region: Costa Siciliana centro settentrionale (Palermo), on

  • 20-03-2020 11:08:37 (UTC)
  • 20-03-2020 12:08:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.3150, 13.8130 at 6 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km NE of Bagheria (55387 inhabitants)
45 Km NE of Palermo (674435 inhabitants)
94 Km N of Caltanissetta (63360 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 1.8 2020-03-20
11:08:37		 38.3152 13.8133 6 2020-07-18
21:08:36		 Bollettino Sismico Italiano INGV 79099081
Reviewed
Rev100 		ML 1.8 2020-03-20
11:08:36		 38.3437 13.8333 1 2020-03-20
11:27:00		 Sala Sismica INGV-Roma 77406281
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-20 11:08:37 ± 0.25
Latitude 38.3152 ± 0.0081
Longitude 13.8133 ± 0.0092
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 79099081

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 899
Semi-minor axis of confidence ellipse (meter) 578
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 4
Circular confidence region, given by single value of horizontal uncertainty (meter) 900.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 114
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.31386
Epicentral distance of station farthest from the epicenter (degree) 0.67269
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 79099081
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-05-13 10:42:43

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 7
Type of magnitude ML
Reference to an origin 77406281
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-20 11:27:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.USI.HHZ. 2020-03-20T11:09:00.29 1.0 undecidable manual S 309 70.1742 50 0.31 29
IV.MSFR.HHE. 2020-03-20T11:09:00.98 0.3 undecidable manual S 114 74.6697 50 -0.2 91
IV.PETRA.HHZ. 2020-03-20T11:08:57.45 0.3 undecidable manual S 154 59.5959 50 0.3 90
IV.MPG.HHE. 2020-03-20T11:08:53.05 0.6 undecidable manual S 247 43.0236 50 0.32 61
IV.CSLB.HHZ. 2020-03-20T11:08:53.57 0.3 undecidable manual S 153 47.0196 50 -0.23 96
IV.SCIAR.HHE. 2020-03-20T11:08:52.40 0.3 undecidable manual S 188 41.9247 98 0.02 99
IV.MSFR.HHE. 2020-03-20T11:08:51.20 0.6 undecidable manual P 114 74.6697 50 -0.05 62
IV.USI.HHZ. 2020-03-20T11:08:50.17 0.3 undecidable manual P 309 70.1742 50 -0.38 88
IV.SOLUN.HHE. 2020-03-20T11:08:49.94 0.3 undecidable manual S 225 34.8429 100 0 100
IV.PETRA.HHZ. 2020-03-20T11:08:49.06 0.3 undecidable manual P 154 59.5959 50 0.14 94
IV.IACL.HHE. 2020-03-20T11:08:48.70 0.6 undecidable manual P 63 52.9026 50 0.81 53
IV.CSLB.HHZ. 2020-03-20T11:08:46.48 0.3 undecidable manual P 153 47.0196 50 -0.5 89
IV.SCIAR.HHE. 2020-03-20T11:08:46.67 0.3 undecidable manual P 188 41.9247 98 0.5 90
IV.MPG.HHE. 2020-03-20T11:08:45.98 0.3 undecidable manual P 247 43.0236 50 -0.39 93
IV.SOLUN.HHE. 2020-03-20T11:08:44.86 0.6 undecidable manual P 225 34.8429 100 0.1 67
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.USI.HHE. ML:0.0 0.000045548899999999993 0.384 AML other m 2020-03-20T11:09:03.81
IV.USI.HHN. ML:0.0 0.00016181365 0.256 AML other m 2020-03-20T11:09:06.42
IV.CSLB.HHN. ML:1.7 0.00014290205 0.3968 AML other m 2020-03-20T11:08:54.73
IV.CSLB.HHE. ML:1.7 0.00012816555000000002 0.3008 AML other m 2020-03-20T11:08:54.56
IV.PETRA.HHN. ML:2.0 0.00021119654999999997 0.6592 AML other m 2020-03-20T11:08:59.81
IV.PETRA.HHE. ML:1.9 0.00017924115 0.3968 AML other m 2020-03-20T11:09:00.53
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