Earthquake with magnitude of ML 0.7 on date 21-08-2021 and time 09:30:02 (UTC) in region 7 km W San Giovanni in Fiore (CS)

A magnitude ML 0.7 earthquake occured in region: 7 km W San Giovanni in Fiore (CS), on

  • 21-08-2021 09:30:02 (UTC)
  • 21-08-2021 11:30:02 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.265, 16.62 at 9 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
San Giovanni in Fiore CS 7 17372 17372
Cotronei KR 11 5480 22852
Castelsilano KR 13 1015 23867
Cerenzia KR 14 1152 25019
Caccuri KR 14 1663 26682
Savelli KR 15 1271 27953

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km E of Cosenza (67546 inhabitants)
40 Km N of Catanzaro (90612 inhabitants)
41 Km NE of Lamezia Terme (70714 inhabitants)
48 Km W of Crotone (62178 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 0.7 2021-08-21
09:30:02
39.265 16.6203 9 2021-08-21
09:45:35
Sala Sismica INGV-Roma 94457651
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-21 09:30:02 ± 0.16
Latitude 39.2650 ± 0.0063
Longitude 16.6203 ± 0.0116
Depth (km) 9 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 94457651

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1030
Semi-minor axis of confidence ellipse (meter) 730
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 268
Circular confidence region, given by single value of horizontal uncertainty (meter) 1030
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 117
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.28149
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 94457651
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-21 09:45:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SELL.HHE. 2021-08-21T09:30:14.48 0.1 undecidable manual S 179 0.2815 50 0.53 88
IV.PIPA.HHZ. 2021-08-21T09:30:13.38 0.6 undecidable manual S 34 0.2671 107 -0.03 50
IV.SERS.HHZ. 2021-08-21T09:30:12.10 0.1 undecidable manual S 167 0.2347 109 -0.14 97
IV.CELI.HHZ. 2021-08-21T09:30:11.12 3.0 undecidable manual S 0.88 0
IV.PIPA.HHZ. 2021-08-21T09:30:09.05 0.3 undecidable manual P 34 0.2671 107 0.18 72
MN.TIP.HHZ. 2021-08-21T09:30:08.66 0.1 undecidable manual S 129 0.1367 121 -0.14 100
IV.SERS.HHZ. 2021-08-21T09:30:08.38 0.1 undecidable manual P 167 0.2347 109 0.18 97
IV.SELL.HHE. 2021-08-21T09:30:08.54 0.1 undecidable manual P 179 0.2815 50 -0.64 85
IV.SPS2.HHZ. 2021-08-21T09:30:07.83 0.1 undecidable manual P 277 0.2194 110 -0.04 100
MN.TIP.HHZ. 2021-08-21T09:30:06.32 0.1 undecidable manual P 129 0.1367 121 0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.TIP.HHN. ML:0.6 4.16E-5 1.62 AML other m 2021-08-21T09:30:08.89
MN.TIP.HHE. ML:0.4 2.73E-5 1.64 AML other m 2021-08-21T09:30:08.91
IV.SERS.HHE. ML:0.6 2.465E-5 0.14 AML other m 2021-08-21T09:30:12.38
IV.PIPA.HHN. ML:1 4.36E-5 0.6 AML other m 2021-08-21T09:30:15.68
IV.SERS.HHN. ML:0.8 3.51E-5 0.3 AML other m 2021-08-21T09:30:15.38
IV.PIPA.HHE. ML:1 4.92E-5 1.44 AML other m 2021-08-21T09:30:15.20
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