Earthquake with magnitude of ML 1.0 on date 08-09-2021 and time 11:24:06 (UTC) in region 4 km S Acri (CS)

A magnitude ML 1.0 earthquake occured in region: 4 km S Acri (CS), on

  • 08-09-2021 11:24:06 (UTC)
  • 08-09-2021 13:24:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.458, 16.392 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
Acri CS 4 20858 20858
Luzzi CS 9 9396 30254
Rose CS 10 4373 34627
Bisignano CS 11 10203 44830
Santa Sofia d'Epiro CS 11 2628 47458
San Demetrio Corone CS 13 3559 51017
San Cosmo Albanese CS 14 591 51608
San Pietro in Guarano CS 14 3663 55271
Castiglione Cosentino CS 15 2896 58167
San Giorgio Albanese CS 15 1432 59599
Vaccarizzo Albanese CS 15 1125 60724
Lappano CS 17 941 61665
Celico CS 17 2802 64467
Rovito CS 17 3158 67625
Spezzano della Sila CS 18 4541 72166
Zumpano CS 18 2570 74736
Longobucco CS 19 3183 77919
Corigliano Calabro CS 19 40427 118346
Spezzano Piccolo CS 19 2079 120425
Casole Bruzio CS 20 2578 123003

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km NE of Cosenza (67546 inhabitants)
54 Km N of Lamezia Terme (70714 inhabitants)
64 Km N of Catanzaro (90612 inhabitants)
76 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 1.0 2021-09-08
11:24:06
39.4585 16.3923 9 2021-09-08
11:29:50
Sala Sismica INGV-Roma 95194321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-08 11:24:06 ± 0.11
Latitude 39.4585 ± 0.0063
Longitude 16.3923 ± 0.0093
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95194321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 751
Semi-minor axis of confidence ellipse (meter) 318
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 87
Circular confidence region, given by single value of horizontal uncertainty (meter) 750
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 97
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.10612
Epicentral distance of station farthest from the epicenter (degree) 0.48024
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 95194321
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-08 11:29:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CET2.HHZ. 2021-09-08T11:24:20.15 0.6 undecidable manual S 282 0.3444 50 0.03 49
IV.PIPA.HHZ. 2021-09-08T11:24:19.58 0.6 undecidable manual S 85 0.3274 50 -0.04 49
IV.SERS.HHE. 2021-09-08T11:24:16.66 0.1 undecidable manual P 151 0.4802 50 -0.21 93
IV.CAR1.HHZ. 2021-09-08T11:24:16.46 0.6 undecidable manual S 214 0.2482 108 -0.5 46
IV.TDS.HHZ. 2021-09-08T11:24:15.29 0.6 undecidable manual S 348 0.2059 111 -0.14 50
IV.SPS2.HHZ. 2021-09-08T11:24:14.42 0.6 undecidable manual S 194 0.1727 115 0.19 49
IV.PIPA.HHZ. 2021-09-08T11:24:14.23 0.6 negative manual P 85 0.3274 50 -0.03 50
IV.CET2.HHZ. 2021-09-08T11:24:14.83 0.6 negative manual P 282 0.3444 50 0.28 47
IV.CAR1.HHZ. 2021-09-08T11:24:12.65 0.6 undecidable manual P 214 0.2482 108 -0.07 50
IV.CELI.HHE. 2021-09-08T11:24:11.28 0.6 undecidable manual S 122 0.1061 127 -0.73 43
IV.SPS2.HHZ. 2021-09-08T11:24:11.36 0.3 positive manual P 194 0.1727 115 0.21 74
IV.TDS.HHZ. 2021-09-08T11:24:11.74 0.1 undecidable manual P 348 0.2059 111 -0.1 100
IV.CELI.HHE. 2021-09-08T11:24:10.51 0.1 undecidable manual P 122 0.1061 127 0.64 88
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SPS2.HHE. ML:1 6.8E-5 0.28 AML other m 2021-09-08T11:24:14.51
IV.SPS2.HHN. ML:0.9 5.82E-5 0.22 AML other m 2021-09-08T11:24:14.74
IV.TDS.HHN. ML:0.6 2.7E-5 0.76 AML other m 2021-09-08T11:24:15.46
IV.TDS.HHE. ML:0.6 2.385E-5 0.56 AML other m 2021-09-08T11:24:16.39
IV.CAR1.HHE. ML:0.9 4.48E-5 0.4 AML other m 2021-09-08T11:24:17.59
IV.CAR1.HHN. ML:1.1 7.365E-5 0.68 AML other m 2021-09-08T11:24:18.06
IV.CET2.HHN. ML:1.5 0.0001103 1.1 AML other m 2021-09-08T11:24:20.84
IV.PIPA.HHE. ML:1.2 7.04E-5 0.3 AML other m 2021-09-08T11:24:21.83
IV.CET2.HHE. ML:1.2 5.915E-5 0.92 AML other m 2021-09-08T11:24:22.09
IV.PIPA.HHN. ML:1.2 5.465E-5 0.16 AML other m 2021-09-08T11:24:24.59
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