Earthquake with magnitude of ML 1.1 on date 24-08-2021 and time 03:55:12 (Italy) in region 5 km S Mormanno (CS)

A magnitude ML 1.1 earthquake occured in region: 5 km S Mormanno (CS), on

  • 24-08-2021 01:55:12 (UTC)
  • 24-08-2021 03:55:12 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.8500, 15.9940 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
Mormanno CS 5 3027 3027
Papasidero CS 8 734 3761
Orsomarso CS 9 1265 5026
Laino Castello CS 10 848 5874
Laino Borgo CS 12 1921 7795
Rotonda PZ 12 3494 11289
Santa Domenica Talao CS 12 1263 12552
Morano Calabro CS 12 4576 17128
Verbicaro CS 13 3056 20184
San Basile CS 15 1055 21239
Viggianello PZ 16 3025 24264
San Donato di Ninea CS 16 1360 25624
Lungro CS 16 2592 28216
Saracena CS 16 3828 32044
Acquaformosa CS 16 1106 33150
Aieta CS 17 823 33973
San Nicola Arcella CS 17 1957 35930
Castelluccio Inferiore PZ 17 2131 38061
Santa Maria del Cedro CS 17 4954 43015
Castelluccio Superiore PZ 18 824 43839
Scalea CS 18 10913 54752
Grisolia CS 18 2249 57001
Castrovillari CS 18 22240 79241
Praia a Mare CS 19 6725 85966
Maierà CS 19 1224 87190

Municipalities with at least 50000 inhabitants

An earthquake occurred to
66 Km NW of Cosenza (67546 inhabitants)
89 Km S of Potenza (67122 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.1 2021-08-24
01:55:12
39.8503 15.9938 9 2021-08-24
03:10:22
Sala Sismica INGV-Roma 94559151
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-24 01:55:12 ± 0.1
Latitude 39.8503 ± 0.0045
Longitude 15.9938 ± 0.0105
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 94559151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 904
Semi-minor axis of confidence ellipse (meter) 167
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 259
Circular confidence region, given by single value of horizontal uncertainty (meter) 900.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.04047
Epicentral distance of station farthest from the epicenter (degree) 0.61963
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 94559151
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-24 03:10:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CAR1.HHN. 2021-08-24T01:55:34.41 0.3 undecidable manual S 164 0.6196 50 0.56 60
IV.MTSN.HNN. 2021-08-24T01:55:29.53 0.6 undecidable manual S 336 0.4551 50 0.55 41
IV.MGR.HHZ. 2021-08-24T01:55:28.93 0.3 undecidable manual S 311 0.4425 50 0.32 66
IV.SCHR.EHE. 2021-08-24T01:55:26.20 0.3 undecidable manual S 10 0.3543 50 0.21 69
IV.SIRI.HHZ. 2021-08-24T01:55:25.92 0.6 undecidable manual S 344 0.3453 50 0.2 46
IV.TDS.HHE. 2021-08-24T01:55:25.76 0.3 undecidable manual S 126 0.3256 50 0.63 62
IV.CET2.HHZ. 2021-08-24T01:55:24.13 0.3 undecidable manual S 185 0.3229 50 -0.93 54
IV.CAR1.HHN. 2021-08-24T01:55:24.84 0.3 undecidable manual P 164 0.6196 50 -0.01 68
IV.CELI.HNZ. 2021-08-24T01:55:24.34 0.1 undecidable manual P 138 0.5980 50 -0.14 88
IV.MCEL.HHZ. 2021-08-24T01:55:22.70 0.1 undecidable manual P 343 0.4964 50 -0.05 92
IV.MTSN.HNN. 2021-08-24T01:55:22.10 0.3 undecidable manual P 336 0.4551 50 0.06 69
IV.MGR.HHZ. 2021-08-24T01:55:21.14 0.6 undecidable manual P 311 0.4425 50 -0.69 39
IV.GRIS.EHZ. 2021-08-24T01:55:19.71 0.1 undecidable manual S 225 0.1538 118 0.45 90
IV.CET2.HHZ. 2021-08-24T01:55:19.31 0.1 positive manual P 185 0.3229 50 -0.47 87
IV.SCHR.EHE. 2021-08-24T01:55:19.85 0.3 undecidable manual P 10 0.3543 50 -0.46 65
IV.SIRI.HHZ. 2021-08-24T01:55:19.99 0.1 undecidable manual P 344 0.3453 50 -0.17 92
IV.TDS.HHE. 2021-08-24T01:55:19.90 0.1 undecidable manual P 126 0.3256 50 0.08 94
IV.MMN.HHE. 2021-08-24T01:55:16.01 0.3 undecidable manual S 356 0.0405 153 -0.03 76
IV.GRIS.EHZ. 2021-08-24T01:55:16.49 0.1 positive manual P 225 0.1538 118 0.06 98
MN.CUC.HHZ. 2021-08-24T01:55:16.97 1.0 negative manual P 316 0.1979 112 -0.35 23
IV.MMN.HHE. 2021-08-24T01:55:14.50 0.1 undecidable manual P 356 0.0405 153 -0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GRIS.EHE. ML:0.7 0.000038118020000000005 0.28 AML other m 2021-08-24T01:55:22.34
IV.SIRI.HHE. ML:0.0 0.000029588799999999997 0.1408 AML other m 2021-08-24T01:55:20.61
IV.GRIS.EHN. ML:0.8 0.00005514132 0.16 AML other m 2021-08-24T01:55:19.90
MN.CUC.HHN. ML:0.9 0.000061893825 0.12 AML other m 2021-08-24T01:55:23.45
MN.CUC.HHE. ML:1.0 0.0000666588 0.2208 AML other m 2021-08-24T01:55:24.41
IV.CET2.HHE. ML:1.1 0.000047850000000000004 0.22 AML other m 2021-08-24T01:55:24.53
IV.CET2.HHN. ML:1.4 0.00009784999999999999 0.2 AML other m 2021-08-24T01:55:24.66
IV.MGR.HHE. ML:1.0 0.00002255 0.3 AML other m 2021-08-24T01:55:31.20
IV.MGR.HHN. ML:1.0 0.000026970305 0.3408 AML other m 2021-08-24T01:55:34.40
IV.SIRI.HHN. ML:0.0 0.00006607319 0.44 AML other m 2021-08-24T01:55:28.41
IV.SIRI.HNE. ML:1.3 0.00007230196499999999 0.3792 AML other m 2021-08-24T01:55:28.59
IV.SIRI.HNN. ML:1.3 0.00008133568 0.4704 AML other m 2021-08-24T01:55:33.01
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, http://terremoti.ingv.it/tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download