Earthquake with magnitude of ML 2.4 on date 23-03-2020 and time 21:20:41 (Italy) in region 1 km SE Brognaturo (VV)

A magnitude ML 2.4 earthquake occured in region: 1 km SE Brognaturo (VV), on

  • 23-03-2020 20:20:41 (UTC)
  • 23-03-2020 21:20:41 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.6, 16.35 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
Brognaturo VV 1 735 735
Spadola VV 2 825 1560
Simbario VV 2 966 2526
Serra San Bruno VV 3 6734 9260
Cardinale CZ 6 2188 11448
Torre di Ruggiero CZ 7 1033 12481
Vallelonga VV 7 706 13187
Pizzoni VV 9 1143 14330
Mongiana VV 10 740 15070
San Nicola da Crissa VV 10 1335 16405
Vazzano VV 10 1067 17472
Sorianello VV 10 1176 18648
Soriano Calabro VV 11 2421 21069
Gerocarne VV 11 2248 23317
Chiaravalle Centrale CZ 11 5759 29076
Capistrano VV 12 1042 30118
Argusto CZ 12 522 30640
Arena VV 13 1456 32096
San Sostene CZ 13 1370 33466
Fabrizia VV 13 2195 35661
Davoli CZ 13 5607 41268
Gagliato CZ 13 505 41773
Nardodipace VV 14 1305 43078
San Vito sullo Ionio CZ 14 1811 44889
Dasà VV 14 1208 46097
Satriano CZ 14 3448 49545
Filogaso VV 14 1417 50962
Cenadi CZ 15 563 51525
Acquaro VV 15 2484 54009
Monterosso Calabro VV 15 1729 55738
Isca sullo Ionio CZ 15 1633 57371
Badolato CZ 16 3085 60456
Bivongi RC 16 1398 61854
Pazzano RC 16 568 62422
Olivadi CZ 16 529 62951
Sant'Andrea Apostolo dello Ionio CZ 16 1937 64888
Petrizzi CZ 16 1131 66019
Santa Caterina dello Ionio CZ 16 2175 68194
Centrache CZ 17 401 68595
Stilo RC 17 2622 71217
Guardavalle CZ 17 4560 75777
Polia VV 18 1023 76800
Maierato VV 19 2188 78988
Dinami VV 19 2168 81156
Montepaone CZ 19 5282 86438
Palermiti CZ 19 1213 87651

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km SW of Catanzaro (90612 inhabitants)
42 Km S of Lamezia Terme (70714 inhabitants)
78 Km S of Cosenza (67546 inhabitants)
82 Km NE of Reggio di Calabria (183035 inhabitants)
82 Km NE of Messina (238439 inhabitants)
86 Km SW of Crotone (62178 inhabitants)
Recent and historical Seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the last three days (72 hours)

Earthquakes of the last three days (72 hours)

This map reports the earthquake epicenters located in the past 72 hours (3 days) from the time this page has been generated. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the last 90 days

Earthquakes of the last 90 days

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1985

Earthquakes since 1985

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2014

Earthquakes since 1000 AD until 2014

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows 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
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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
Rev 100 ML 2.4 2020-03-23
20:20:41
38.6 16.35 10 2020-03-23
20:35:24
Sala Sismica INGV-Roma 77515891
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-23 20:20:41 ± 0.04
Latitude 38.60 ± 0.00
Longitude 16.35 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77515891

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 410
Semi-minor axis of confidence ellipse (meter) 177
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 107
Circular confidence region, given by single value of horizontal uncertainty (meter) 410
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 124
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.51171
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 9
Magnitude information

ML:2.4

Field Value
Value 2.4
Uncertainty 0
Num. used stations 4
Type of magnitude ML
Reference to an origin 77515891
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-23 20:35:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SALB.HHZ. 2020-03-23T20:21:20.56 3.0 undecidable manual S -2.67 0
IV.GMB.BHZ. 2020-03-23T20:21:02.36 3.0 undecidable manual S 0
MN.CEL.HHZ. 2020-03-23T20:20:59.34 0.6 undecidable manual S 227 0.491 50 0.26 45
IV.MSRU.HHZ. 2020-03-23T20:20:56.21 3.0 positive manual P 0.04 0
XK.GIZZ.HHZ. 2020-03-23T20:20:56.23 0.1 undecidable manual S 344 0.3993 50 -0.15 94
IV.CAR1.HHZ. 2020-03-23T20:20:55.77 3.0 negative manual P 0.57 0
IV.GMB.BHZ. 2020-03-23T20:20:53.35 3.0 undecidable manual P 0
IV.SERS.HHZ. 2020-03-23T20:20:52.23 0.1 undecidable manual P 31 0.5117 50 0.09 93
XK.SELL.HHZ. 2020-03-23T20:20:51.03 0.1 undecidable manual P 29 0.4425 50 0.09 95
XK.ALB1.HHE. 2020-03-23T20:20:51.30 0.1 undecidable manual P 24 0.4685 50 -0.09 94
IV.GRI.EHZ. 2020-03-23T20:20:51.36 0.1 undecidable manual S 13 0.232 111 0.03 100
MN.CEL.HHZ. 2020-03-23T20:20:51.68 0.1 undecidable manual P 227 0.491 50 -0.09 94
XK.GIZZ.HHZ. 2020-03-23T20:20:50.11 0.3 undecidable manual P 344 0.3993 50 -0.1 71
IV.JOPP.HHZ. 2020-03-23T20:20:49.63 0.1 undecidable manual P 272 0.3633 50 0.03 97
IV.PLAC.HHZ. 2020-03-23T20:20:48.70 0.1 undecidable manual S 155 0.1619 118 -0.16 98
IV.GRI.EHZ. 2020-03-23T20:20:47.37 0.3 negative manual P 13 0.232 111 0.07 74
IV.FERC.HNE. 2020-03-23T20:20:47.14 0.1 undecidable manual P 231 0.2257 111 -0.03 100
IV.PLAC.HHZ. 2020-03-23T20:20:46.01 0.1 undecidable manual P 155 0.1619 118 0.14 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PLAC.HHN. ML:2.4 0.00212 1.44 AML other m 2020-03-23T20:20:48.96
IV.PLAC.HNE. ML:2.4 0.00208 1.76 AML other m 2020-03-23T20:20:48.97
IV.PLAC.HNN. ML:2.3 0.00172 1.2 AML other m 2020-03-23T20:20:49.73
IV.PLAC.HHE. ML:2.3 0.00184 1.22 AML other m 2020-03-23T20:20:49.73
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol 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
Waveforms Seismic signals in full SEED format Download