Earthquake with magnitude of ML 1.0 on date 18-07-2021 and time 03:52:52 (Italy) in region 4 km E Sapri (SA)

A magnitude ML 1.0 earthquake occured in region: 4 km E Sapri (SA), on

  • 18-07-2021 01:52:52 (UTC)
  • 18-07-2021 03:52:52 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.079, 15.677 at 14 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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Sapri SA 4 6770 6770
Torraca SA 5 1263 8033
Rivello PZ 7 2767 10800
Vibonati SA 9 3293 14093
Lagonegro PZ 9 5584 19677
Tortorella SA 9 523 20200
Casaletto Spartano SA 10 1420 21620
Ispani SA 10 1026 22646
Maratea PZ 10 5139 27785
Trecchina PZ 11 2316 30101
Nemoli PZ 11 1495 31596
Santa Marina SA 12 3243 34839
Morigerati SA 12 665 35504
Lauria PZ 14 12919 48423
Casalbuono SA 15 1194 49617
Caselle in Pittari SA 15 1956 51573
Torre Orsaia SA 18 2118 53691
Tortora CS 19 6187 59878
San Giovanni a Piro SA 20 3780 63658

Municipalities with at least 50000 inhabitants

An earthquake occurred to
63 Km S of Potenza (67122 inhabitants)
83 Km SE of Battipaglia (50786 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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 1.0 2021-07-18
01:52:52
40.0788 15.6768 15 2021-07-18
02:05:03
Sala Sismica INGV-Roma 92894321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-18 01:52:52 ± 0.33
Latitude 40.0788 ± 0.0090
Longitude 15.6768 ± 0.0141
Depth (km) 15 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 92894321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 971
Semi-minor axis of confidence ellipse (meter) 903
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 96
Circular confidence region, given by single value of horizontal uncertainty (meter) 970
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 173
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 10
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
Epicentral distance of station farthest from the epicenter (degree) 0.2635
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.3
Num. used stations 9
Type of magnitude ML
Reference to an origin 92894321
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-18 02:05:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SGAL.EHZ. 2021-07-18T01:54:13.57 3.0 undecidable manual Pg 15.77 0
GU.GSCL.HHZ. 2021-07-18T01:54:06.51 3.0 undecidable manual Pg 22.709999 0
IV.MURB.HHZ. 2021-07-18T01:54:04.01 3.0 undecidable manual Sn 1.65 0
IV.SRES.HHZ. 2021-07-18T01:54:02.36 3.0 undecidable manual Sg 15.77 0
IV.PTRJ.HNZ. 2021-07-18T01:53:37.47 3.0 undecidable manual Sg 18.52 0
IV.MTGR.HHZ. 2021-07-18T01:53:24.64 3.0 negative manual Pg 1.97 0
IV.ICAI.EHZ. 2021-07-18T01:53:18.12 3.0 undecidable manual Sn -0.88 0
IV.PTRJ.HNZ. 2021-07-18T01:53:05.36 3.0 undecidable manual Pg 8.12 0
IV.MCEL.HNZ. 2021-07-18T01:53:02.30 0.6 undecidable manual S 21 0.2635 102 -0.17 48
IV.MTSN.HHN. 2021-07-18T01:53:00.40 0.6 undecidable manual S 17 0.1961 109 -0.12 49
IV.SIRI.HHZ. 2021-07-18T01:53:00.37 0.6 undecidable manual S 55 0.179 112 0.33 47
MN.CUC.HHZ. 2021-07-18T01:52:58.51 0.6 undecidable manual S 129 0.1358 122 -0.4 48
IV.MGR.HHZ. 2021-07-18T01:52:58.14 0.6 undecidable manual S 302 0.1106 129 -0.17 49
IV.GATE.HHZ. 2021-07-18T01:52:58.03 3.0 undecidable manual P 0.38 0
IV.MCEL.HNZ. 2021-07-18T01:52:57.88 0.1 undecidable manual P 21 0.2635 102 -0.2 95
IV.MGR.HHZ. 2021-07-18T01:52:56.08 0.3 negative manual P 302 0.1106 129 0.4 71
MN.CUC.HHZ. 2021-07-18T01:52:56.34 1.0 negative manual P 129 0.1358 122 0.31 24
IV.MTSN.HHN. 2021-07-18T01:52:56.98 0.1 undecidable manual P 17 0.1961 109 0.02 100
IV.SIRI.HHZ. 2021-07-18T01:52:56.83 0.6 negative manual P 55 0.179 112 0.15 49
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IX.COL3.HHE.02 ML:1.2 2.686386E-5 0.896 AML other m 2021-07-18T01:53:32.38
IX.COL3.HHN.02 ML:1.3 3.184397E-5 0.72 AML other m 2021-07-18T01:52:55.20
IV.MGR.HHE. ML:0.6 3.6533452E-5 0.2784 AML other m 2021-07-18T01:52:58.62
IV.MGR.HHN. ML:0.5 3.172383E-5 0.96 AML other m 2021-07-18T01:53:13.05
IV.MGR.HNE. ML:1.3 0.00016465295 0.5792 AML other m 2021-07-18T01:53:17.08
IV.MGR.HNN. ML:1.2 0.00014149525 0.8992 AML other m 2021-07-18T01:52:55.19
MN.CUC.HHE. ML:0.7 3.9593915E-5 1.6608 AML other m 2021-07-18T01:53:08.07
MN.CUC.HHN. ML:0.6 3.3429795E-5 1.28 AML other m 2021-07-18T01:53:14.25
MN.CUC.HNN. ML:1.1 9.917051E-5 1.12 AML other m 2021-07-18T01:53:10.24
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