Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 25-05-2020 and time 11:51:56 (Italy) in region Costa Siciliana centro settentrionale (Palermo)

A magnitude ML 1.9 earthquake occured in region: Costa Siciliana centro settentrionale (Palermo), on

  • 25-05-2020 09:51:56 (UTC)
  • 25-05-2020 11:51:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.3210, 13.4850 at 39 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km NE of Palermo (674435 inhabitants)
27 Km N of Bagheria (55387 inhabitants)
91 Km E of Trapani (68759 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 2020-05-25
09:51:56		 38.3207 13.4847 39 2020-11-19
12:36:51		 Bollettino Sismico Italiano INGV 80828901
Reviewed
Rev100 		ML 1.8 2020-05-25
09:51:57		 38.4122 13.6338 2 2020-05-25
09:57:47		 Sala Sismica INGV-Roma 79544731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-25 09:51:56 ± 0.5
Latitude 38.3207 ± 0.0225
Longitude 13.4847 ± 0.0287
Depth (km) 39 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 80828901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2413
Semi-minor axis of confidence ellipse (meter) 2264
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 233
Circular confidence region, given by single value of horizontal uncertainty (meter) 2410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 154
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) 0.45
Epicentral distance of station closest to the epicenter (degree) 0.18706
Epicentral distance of station farthest from the epicenter (degree) 0.69518
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:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 13
Type of magnitude ML
Reference to an origin 80828901
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-09-14 01:13:44

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 79544731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-25 09:57:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PETRA.HHZ. 2020-05-25T09:52:22.60 0.6 undecidable manual S 134 77.1672 92 1.89 26
IV.PLLN.EHZ. 2020-05-25T09:52:19.10 0.3 undecidable manual S 122 67.9764 93 0.36 65
IV.CSLB.HHZ. 2020-05-25T09:52:18.40 0.3 undecidable manual S 130 65.6898 94 0.16 71
IV.GIB.HHE. 2020-05-25T09:52:17.37 0.6 undecidable manual S 128 59.7957 95 0.39 42
IV.USI.HHZ. 2020-05-25T09:52:15.10 0.6 undecidable manual S 328 50.5161 100 0.11 47
IV.PETRA.HHZ. 2020-05-25T09:52:11.67 0.3 undecidable manual P 134 77.1672 92 1.05 60
IV.MPG.HHE. 2020-05-25T09:52:09.58 0.6 undecidable manual S 212 20.7681 142 0 53
IV.CSLB.HHZ. 2020-05-25T09:52:09.29 0.3 undecidable manual P 130 65.6898 94 0.09 74
IV.PLLN.EHZ. 2020-05-25T09:52:09.67 0.6 undecidable manual P 122 67.9764 93 0.18 48
IV.SOLUN.HHZ. 2020-05-25T09:52:09.80 0.6 undecidable manual S 171 25.752 134 -0.49 50
IV.GIB.HHE. 2020-05-25T09:52:08.14 0.3 undecidable manual P 128 59.7957 95 -0.33 73
IV.SCIAR.HHZ. 2020-05-25T09:52:07.74 0.3 undecidable manual P 151 48.1185 103 0.71 66
IV.USI.HHZ. 2020-05-25T09:52:07.39 0.1 negative manual P 328 50.5161 100 0.07 100
IV.MPG.HHE. 2020-05-25T09:52:04.47 0.3 undecidable manual P 212 20.7681 142 0.28 79
IV.SOLUN.HHZ. 2020-05-25T09:52:04.26 0.3 undecidable manual P 171 25.752 134 -0.34 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SOLUN.HHE. ML:2.1 0.00036495265 0.4992 AML other m 2020-05-25T09:52:11.00
IV.SOLUN.HHN. ML:1.8 0.0001832602 0.1984 AML other m 2020-05-25T09:52:12.42
IV.SCIAR.HHN. ML:1.9 0.0001695 0.3 AML other m 2020-05-25T09:52:18.14
IV.SCIAR.HNN. ML:2.0 0.00020166589999999997 0.2944 AML other m 2020-05-25T09:52:18.15
IV.SCIAR.HHE. ML:1.8 0.00011585000000000001 0.24 AML other m 2020-05-25T09:52:18.27
IV.USI.HHE. ML:2.0 0.00019800000000000002 0.18 AML other m 2020-05-25T09:52:18.36
IV.CSLB.HHN. ML:1.7 0.0000785 0.9 AML other m 2020-05-25T09:52:19.52
IV.CSLB.HHE. ML:1.7 0.0000738 0.7 AML other m 2020-05-25T09:52:19.42
IV.USI.HHN. ML:2.6 0.0007725 0.22 AML other m 2020-05-25T09:52:19.08
IV.PLLN.EHE. ML:2.0 0.00015150000000000002 0.96 AML other m 2020-05-25T09:52:19.96
IV.PLLN.EHN. ML:2.2 0.00022071540000000002 0.32 AML other m 2020-05-25T09:52:21.08
IV.PETRA.HHN. ML:1.9 0.00008779999999999999 0.66 AML other m 2020-05-25T09:52:23.34
IV.PETRA.HHE. ML:1.9 0.00010564999999999999 1.48 AML other m 2020-05-25T09:52:28.03
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