Earthquake with magnitude of ML 0.7 on date 26-07-2021 and time 01:35:45 (UTC) in region 4 km NW Bisignano (CS)

A magnitude ML 0.7 earthquake occured in region: 4 km NW Bisignano (CS), on

  • 26-07-2021 01:35:45 (UTC)
  • 26-07-2021 03:35:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.548, 16.264 at 10 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
Bisignano CS 4 10203 10203
Santa Sofia d'Epiro CS 6 2628 12831
Tarsia CS 8 2054 14885
San Demetrio Corone CS 9 3559 18444
Torano Castello CS 11 4614 23058
Luzzi CS 11 9396 32454
Cervicati CS 12 829 33283
Roggiano Gravina CS 12 7208 40491
Acri CS 12 20858 61349
San Marco Argentano CS 13 7424 68773
Mongrassano CS 13 1607 70380
Spezzano Albanese CS 13 7028 77408
Cerzeto CS 14 1373 78781
San Lorenzo del Vallo CS 14 3394 82175
Terranova da Sibari CS 14 5100 87275
San Cosmo Albanese CS 14 591 87866
Lattarico CS 14 4013 91879
San Martino di Finita CS 15 1100 92979
Vaccarizzo Albanese CS 15 1125 94104
Rota Greca CS 16 1156 95260
Rose CS 17 4373 99633
San Giorgio Albanese CS 17 1432 101065
Santa Caterina Albanese CS 17 1222 102287
Fagnano Castello CS 18 3885 106172
San Benedetto Ullano CS 18 1555 107727
Montalto Uffugo CS 18 19669 127396
Malvito CS 19 1795 129191

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km N of Cosenza (67546 inhabitants)
64 Km N of Lamezia Terme (70714 inhabitants)
77 Km NW of Catanzaro (90612 inhabitants)
91 Km NW 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 2021-07-26
01:35:45
39.548 16.2638 10 2021-07-26
01:42:41
Sala Sismica INGV-Roma 93217781
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-26 01:35:45 ± 0.3
Latitude 39.5480 ± 0.0126
Longitude 16.2638 ± 0.0198
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 93217781

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2020
Semi-minor axis of confidence ellipse (meter) 870
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 232
Circular confidence region, given by single value of horizontal uncertainty (meter) 2020
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 206
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.60794
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 4
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 93217781
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-26 01:42:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.IST3.HHZ. 2021-07-26T01:36:03.78 3.0 undecidable manual P 0 0
IV.GRIS.EHZ. 2021-07-26T01:35:59.24 0.6 undecidable manual S 301 0.3705 50 -0.19 65
IV.SERS.HHE. 2021-07-26T01:35:58.29 1.0 undecidable manual P 147 0.6079 50 0.57 28
IV.CAR1.HHZ. 2021-07-26T01:35:56.88 0.6 undecidable manual S 188 0.2968 50 -0.38 63
IV.CET2.HHZ. 2021-07-26T01:35:55.73 0.3 undecidable manual S 265 0.2392 50 0.18 99
IV.GRIS.EHZ. 2021-07-26T01:35:53.37 0.6 undecidable manual P 301 0.3705 50 -0.28 63
IV.CAR1.HHZ. 2021-07-26T01:35:52.47 0.6 positive manual P 188 0.2968 50 0.07 67
IV.CET2.HHZ. 2021-07-26T01:35:51.56 0.3 undecidable manual P 265 0.2392 50 0.15 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CET2.HHE. ML:0.7 3.065E-5 0.06 AML other m 2021-07-26T01:35:55.96
IV.CET2.HHN. ML:1.3 0.00010157212 0.1 AML other m 2021-07-26T01:35:56.03
IV.CAR1.HHE. ML:0.4 9.654125E-6 0.38 AML other m 2021-07-26T01:35:58.39
IV.CAR1.HHN. ML:0.5 1.4318455E-5 0.26 AML other m 2021-07-26T01:35:57.33
IV.GRIS.EHE. ML:0.6 1.6562E-5 1.3 AML other m 2021-07-26T01:36:00.24
IV.GRIS.EHN. ML:0.6 1.4870305E-5 1.42 AML other m 2021-07-26T01:36:00.37
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