Earthquake with magnitude of ML 1.9 on date 28-04-2020 and time 20:27:41 (Italy) in region Tirreno Meridionale (MARE)

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

  • 28-04-2020 18:27:41 (UTC)
  • 28-04-2020 20:27:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.42, 13.64 at 2 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
39 Km N of Bagheria (55387 inhabitants)
41 Km NE of Palermo (674435 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.9 2020-04-28
18:27:41
38.42 13.64 2 2020-04-28
18:52:34
Sala Sismica INGV-Roma 78650511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-28 18:27:41 ± 0.28
Latitude 38.42 ± 0.01
Longitude 13.64 ± 0.02
Depth (km) 2 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 78650511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1307
Semi-minor axis of confidence ellipse (meter) 1081
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 32
Circular confidence region, given by single value of horizontal uncertainty (meter) 1310
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 129
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.69522
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 78650511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-28 18:52:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RM33.HNZ. 2020-04-28T18:29:36.17 3.0 undecidable manual Sn 2.97 0
IV.ZONE.HHZ. 2020-04-28T18:29:36.13 3.0 negative manual Pn 1.13 0
IV.ROSPO.HHZ. 2020-04-28T18:29:31.26 3.0 undecidable manual Sn 1.96 0
IV.NOCI.HHZ. 2020-04-28T18:29:29.82 3.0 undecidable manual Sg 9.97 0
IV.LRP.EHZ. 2020-04-28T18:29:15.41 3.0 undecidable manual Sn 3.55 0
IV.PE3.EHZ. 2020-04-28T18:29:01.46 3.0 undecidable manual Pn 0.1 0
IV.BADI.EHZ. 2020-04-28T18:29:01.32 3.0 undecidable manual Pn 1.99 0
IV.PAOL.HHZ. 2020-04-28T18:28:58.03 3.0 undecidable manual Sn -1.14 0
XK.GIZZ.HHZ. 2020-04-28T18:28:44.13 3.0 undecidable manual Sn -0.03 0
IV.SSY.HHZ. 2020-04-28T18:28:34.81 0.6 undecidable manual S 138 1.6952 38 -1.41 21
IV.RAFF.HHZ. 2020-04-28T18:28:26.75 0.6 undecidable manual S 154 1.3247 50 1.32 27
IV.SSY.HHZ. 2020-04-28T18:28:11.80 1.0 negative manual P 138 1.6952 38 -1.34 11
IV.RAFF.HHZ. 2020-04-28T18:28:07.45 0.6 negative manual P 154 1.3247 50 0.55 38
IV.PETRA.HHZ. 2020-04-28T18:28:07.25 0.6 undecidable manual S 147 0.6943 50 0.5 45
IV.MBFT.HHZ. 2020-04-28T18:28:06.86 0.6 undecidable manual S 229 0.715 50 -0.49 45
IV.CSLB.HHZ. 2020-04-28T18:28:03.01 0.6 undecidable manual S 145 0.5828 50 -0.44 47
IV.PLLN.EHZ. 2020-04-28T18:28:03.47 0.6 undecidable manual S 137 0.5819 50 0.05 50
IV.GIB.HHZ. 2020-04-28T18:28:02.19 0.6 undecidable manual S 144 0.5261 50 0.44 47
IV.USI.HHZ. 2020-04-28T18:28:00.08 0.6 undecidable manual S 309 0.4605 92 0.75 43
IV.PETRA.HHZ. 2020-04-28T18:27:56.07 0.6 positive manual P 147 0.6943 50 -0.04 49
IV.MBFT.HHZ. 2020-04-28T18:27:56.62 1.0 undecidable manual P 229 0.715 50 0.16 24
IV.SOLUN.HHZ. 2020-04-28T18:27:55.14 0.6 undecidable manual S 194 0.3363 92 0.59 47
IV.CSLB.HHZ. 2020-04-28T18:27:54.10 0.1 undecidable manual P 145 0.5828 50 -0.11 100
IV.PLLN.EHZ. 2020-04-28T18:27:54.01 1.0 positive manual P 137 0.5819 50 -0.18 25
IV.IACL.HHZ. 2020-04-28T18:27:53.88 0.6 positive manual P 78 0.5729 50 -0.16 50
IV.GIB.HHZ. 2020-04-28T18:27:53.38 0.1 undecidable manual P 144 0.5261 50 0.16 100
IV.USI.HHZ. 2020-04-28T18:27:51.59 0.6 negative manual P 309 0.4605 92 -0.23 50
IV.SOLUN.HHZ. 2020-04-28T18:27:48.45 0.1 undecidable manual P 194 0.3363 92 -0.62 92
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SOLUN.HHN. ML:1.9 0.0002865 0.7 AML other m 2020-04-28T18:27:56.29
IV.SOLUN.HHE. ML:1.8 0.0002715 0.26 AML other m 2020-04-28T18:27:56.35
IV.USI.HHN. ML:2.5 0.000857 0.64 AML other m 2020-04-28T18:28:01.35
IV.GIB.HHN. ML:2.2 0.000362 1.54 AML other m 2020-04-28T18:28:03.86
IV.CSLB.HHN. ML:1.9 0.0001375 0.9 AML other m 2020-04-28T18:28:03.92
IV.CSLB.HHE. ML:1.6 8.23E-5 0.54 AML other m 2020-04-28T18:28:03.86
IV.GIB.HHE. ML:2.1 0.0002615 0.36 AML other m 2020-04-28T18:28:04.31
IV.USI.HHE. ML:1.8 0.000168 0.8 AML other m 2020-04-28T18:28:04.50
IV.PLLN.EHN. ML:2.4 0.0004385 0.34 AML other m 2020-04-28T18:28:05.64
IV.PLLN.EHE. ML:2.1 0.000247 0.68 AML other m 2020-04-28T18:28:06.65
IV.IACL.HHE. ML:1.9 0.0001475 1.36 AML other m 2020-04-28T18:28:06.16
IV.MBFT.HHE. ML:1.4 3.275E-5 0.42 AML other m 2020-04-28T18:28:08.49
IV.IACL.HHN. ML:1.8 0.0001225 0.4 AML other m 2020-04-28T18:28:09.38
IV.PETRA.HHE. ML:2.2 0.0002215 1.64 AML other m 2020-04-28T18:28:09.17
IV.PETRA.HHN. ML:2 0.0001385 0.62 AML other m 2020-04-28T18:28:10.87
IV.MBFT.HHN. ML:1.3 2.915E-5 1.02 AML other m 2020-04-28T18:28:11.27
IV.RAFF.HHE. ML:2 4.82E-5 0.42 AML other m 2020-04-28T18:28:39.55
IV.RAFF.HHN. ML:1.9 4.355E-5 1.44 AML other m 2020-04-28T18:28:39.09
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download