Earthquake with magnitude of ML 2.4 on date 12-09-2021 and time 04:06:57 (Italy) in region 2 km SW Vallelonga (VV)

A magnitude ML 2.4 earthquake occured in region: 2 km SW Vallelonga (VV), on

  • 12-09-2021 02:06:57 (UTC)
  • 12-09-2021 04:06:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.641, 16.279 at 6 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
Vallelonga VV 2 706 706
San Nicola da Crissa VV 3 1335 2041
Vazzano VV 3 1067 3108
Pizzoni VV 3 1143 4251
Capistrano VV 6 1042 5293
Simbario VV 6 966 6259
Filogaso VV 6 1417 7676
Spadola VV 6 825 8501
Soriano Calabro VV 6 2421 10922
Sorianello VV 7 1176 12098
Brognaturo VV 7 735 12833
Gerocarne VV 8 2248 15081
Torre di Ruggiero CZ 8 1033 16114
Serra San Bruno VV 9 6734 22848
Monterosso Calabro VV 9 1729 24577
Cardinale CZ 9 2188 26765
Arena VV 10 1456 28221
Maierato VV 11 2188 30409
Dasà VV 11 1208 31617
Acquaro VV 12 2484 34101
Polia VV 13 1023 35124
Chiaravalle Centrale CZ 13 5759 40883
Sant'Onofrio VV 13 3067 43950
San Vito sullo Ionio CZ 14 1811 45761
Stefanaconi VV 14 2494 48255
Cenadi CZ 14 563 48818
Argusto CZ 14 522 49340
Mongiana VV 15 740 50080
Pizzo VV 15 9278 59358
San Gregorio d'Ippona VV 15 2527 61885
Francavilla Angitola VV 15 1939 63824
Francica VV 16 1651 65475
Olivadi CZ 16 529 66004
Vibo Valentia VV 16 33941 99945
Filadelfia VV 16 5384 105329
Centrache CZ 17 401 105730
Gagliato CZ 17 505 106235
Dinami VV 17 2168 108403
Fabrizia VV 18 2195 110598
Satriano CZ 18 3448 114046
San Costantino Calabro VV 18 2239 116285
Davoli CZ 18 5607 121892
San Sostene CZ 18 1370 123262
San Pietro di Caridà RC 18 1195 124457
Petrizzi CZ 18 1131 125588
Nardodipace VV 19 1305 126893
Palermiti CZ 19 1213 128106
Mileto VV 19 6763 134869
Ionadi VV 20 4238 139107

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km S of Lamezia Terme (70714 inhabitants)
40 Km SW of Catanzaro (90612 inhabitants)
73 Km S of Cosenza (67546 inhabitants)
80 Km NE of Messina (238439 inhabitants)
81 Km NE of Reggio di Calabria (183035 inhabitants)
88 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 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map reports the earthquake epicenters located in the 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. 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 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located in the 90 days preceding the time of the current earthquake occurrence, 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 from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

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 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 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
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 2.4 2021-09-12
02:06:57
38.6407 16.2792 6 2021-09-12
02:14:41
Sala Sismica INGV-Roma 95323451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-12 02:06:57 ± 0.09
Latitude 38.6407 ± 0.0045
Longitude 16.2792 ± 0.0069
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95323451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 548
Semi-minor axis of confidence ellipse (meter) 309
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 297
Circular confidence region, given by single value of horizontal uncertainty (meter) 550
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.9227
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 13
Magnitude information

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 40
Type of magnitude ML
Reference to an origin 95323451
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-12 02:14:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.COLB.HHZ. 2021-09-12T02:08:16.95 3.0 undecidable manual Sn 1.49 0
IV.SAMA.EHZ. 2021-09-12T02:08:12.66 3.0 undecidable manual Pg 10.77 0
HL.VLS.HHZ. 2021-09-12T02:07:47.67 3.0 undecidable manual Pn -3.13 0
OT.OT12.EHZ. 2021-09-12T02:07:47.70 3.0 positive manual Pn 2.54 0
IV.SIRI.HHZ. 2021-09-12T02:07:26.80 3.0 positive manual P 1.25 0
IV.MSRU.HHZ. 2021-09-12T02:07:22.88 0.6 undecidable manual S 238 0.7114 50 0.51 41
IV.SPS2.HHZ. 2021-09-12T02:07:20.89 0.6 undecidable manual S 4 0.652 50 0.28 44
IV.CAR1.HHZ. 2021-09-12T02:07:19.54 1.0 undecidable manual S 355 0.6142 50 0.03 23
IV.SOI.EHZ. 2021-09-12T02:07:18.45 0.6 undecidable manual S 197 0.5936 50 -0.44 43
IV.GRIS.EHZ. 2021-09-12T02:07:18.36 3.0 undecidable manual P -1.35 0
IV.CET2.HHZ. 2021-09-12T02:07:16.10 1.0 negative manual P 344 0.9227 50 0.5 20
IV.IST3.HHZ. 2021-09-12T02:07:14.29 0.3 positive manual P 281 0.8328 50 0.23 64
IV.SELL.HHZ. 2021-09-12T02:07:14.44 0.6 undecidable manual S 38 0.4371 50 0.2 46
IV.MTTG.HHZ. 2021-09-12T02:07:13.12 0.6 positive manual P 216 0.7824 50 -0.08 44
IV.MSRU.HHZ. 2021-09-12T02:07:11.67 0.6 positive manual P 238 0.7114 50 -0.31 43
IV.SPS2.HHZ. 2021-09-12T02:07:11.79 0.6 positive manual P 4 0.652 50 0.83 36
IV.CAR1.HHZ. 2021-09-12T02:07:10.11 1.0 positive manual P 355 0.6142 50 -0.22 22
IV.GIZZ.HHZ. 2021-09-12T02:07:10.71 0.6 undecidable manual S 351 0.3435 99 -0.49 45
IV.JOPP.HNZ. 2021-09-12T02:07:09.93 0.6 undecidable manual S 264 0.3094 100 0.04 49
IV.SOI.EHZ. 2021-09-12T02:07:09.55 0.3 negative manual P 197 0.5936 50 -0.42 64
IV.SERS.HHZ. 2021-09-12T02:07:08.17 0.3 negative manual P 39 0.5072 50 -0.32 67
IV.SELL.HHZ. 2021-09-12T02:07:06.80 0.6 undecidable manual P 38 0.4371 50 -0.49 44
IV.GRI.EHZ. 2021-09-12T02:07:06.18 0.1 undecidable manual S 31 0.2122 105 -0.06 100
IV.PLAC.HHZ. 2021-09-12T02:07:06.84 0.6 undecidable manual S 147 0.2275 104 0.01 50
IV.GIZZ.HHZ. 2021-09-12T02:07:05.22 0.1 positive manual P 351 0.3435 99 -0.31 93
IV.JOPP.HNZ. 2021-09-12T02:07:04.90 0.3 negative manual P 264 0.3094 100 0.13 73
IV.GRI.EHZ. 2021-09-12T02:07:03.01 0.1 negative manual P 31 0.2122 105 0.34 94
IV.PLAC.HHZ. 2021-09-12T02:07:03.26 0.1 positive manual P 147 0.2275 104 0.25 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PLAC.HHE. ML:2.5 0.001905 1.3 AML other m 2021-09-12T02:07:06.86
IV.PLAC.HNN. ML:2.9 0.00455 1.64 AML other m 2021-09-12T02:07:06.97
IV.PLAC.HNE. ML:2.9 0.004805 1.4 AML other m 2021-09-12T02:07:07.96
IV.GRI.EHN. ML:2.6 0.002745 0.3 AML other m 2021-09-12T02:07:07.76
IV.PLAC.HHN. ML:2.8 0.004305 1.52 AML other m 2021-09-12T02:07:07.91
IV.GRI.EHE. ML:2.6 0.00244 0.3 AML other m 2021-09-12T02:07:09.10
IV.JOPP.HHE. ML:2.2 0.0006115 0.38 AML other m 2021-09-12T02:07:10.25
IV.JOPP.HNE. ML:2.4 0.001027 0.48 AML other m 2021-09-12T02:07:10.32
IV.JOPP.HHN. ML:2.5 0.001335 0.26 AML other m 2021-09-12T02:07:10.84
IV.JOPP.HNN. ML:2.4 0.001245 0.26 AML other m 2021-09-12T02:07:10.85
IV.SERS.HHE. ML:2.1 0.0002885 0.34 AML other m 2021-09-12T02:07:20.33
IV.SERS.HNN. ML:2.1 0.0002925 0.34 AML other m 2021-09-12T02:07:20.33
IV.CAR1.HHE. ML:2.5 0.000545 0.34 AML other m 2021-09-12T02:07:21.64
IV.SERS.HHN. ML:2 0.000243 0.44 AML other m 2021-09-12T02:07:21.97
IV.SERS.HNE. ML:2.1 0.000277 0.46 AML other m 2021-09-12T02:07:21.76
IV.CAR1.HNE. ML:2.6 0.0007955 1 AML other m 2021-09-12T02:07:22.09
IV.SOI.EHE. ML:2.2 0.0002705 0.38 AML other m 2021-09-12T02:07:22.45
IV.CAR1.HHN. ML:2.6 0.000656 0.84 AML other m 2021-09-12T02:07:23.70
IV.CAR1.HNN. ML:2.6 0.000651 0.82 AML other m 2021-09-12T02:07:23.69
IV.SOI.EHN. ML:2.2 0.000257 0.6 AML other m 2021-09-12T02:07:23.29
IV.SELL.HHN. ML:1.8 0.000184 0.88 AML other m 2021-09-12T02:07:23.91
IV.SPS2.HHE. ML:2 0.000172 0.7 AML other m 2021-09-12T02:07:23.49
IV.SPS2.HHN. ML:2.3 0.000337 0.34 AML other m 2021-09-12T02:07:23.69
IV.SELL.HNN. ML:2.3 0.0006025 1.48 AML other m 2021-09-12T02:07:24.91
IV.SELL.HNE. ML:2.3 0.000595 0.46 AML other m 2021-09-12T02:07:24.22
IV.SELL.HHE. ML:1.8 0.000196 0.46 AML other m 2021-09-12T02:07:24.22
IV.MSRU.HHE. ML:2.7 0.000689 1.48 AML other m 2021-09-12T02:07:25.89
IV.MSRU.HHN. ML:2.5 0.000423 0.24 AML other m 2021-09-12T02:07:25.56
IV.IST3.HHN. ML:3 0.001025 0.6 AML other m 2021-09-12T02:07:30.54
IV.IST3.HNN. ML:2.9 0.0009725 0.56 AML other m 2021-09-12T02:07:30.54
IV.CET2.HHN. ML:2.8 0.0005885 0.32 AML other m 2021-09-12T02:07:30.75
IV.MTTG.HHE. ML:2.3 0.0002655 0.5 AML other m 2021-09-12T02:07:31.62
IV.IST3.HHE. ML:2.9 0.000972 1.34 AML other m 2021-09-12T02:07:32.75
IV.IST3.HNE. ML:2.9 0.000863 1.34 AML other m 2021-09-12T02:07:32.75
IV.CET2.HHE. ML:2.5 0.000319 0.66 AML other m 2021-09-12T02:07:32.35
IV.SIRI.HHE. ML:2 3.45E-5 0.48 AML other m 2021-09-12T02:07:33.08
IV.GRIS.EHN. ML:2.2 0.000118 1.24 AML other m 2021-09-12T02:07:38.82
IV.MTTG.HHN. ML:2.4 0.0003 1.36 AML other m 2021-09-12T02:07:39.73
IV.GRIS.EHE. ML:2.4 0.000155 0.72 AML other m 2021-09-12T02:07:39.39
IV.SIRI.HHN. ML:2.3 7.665E-5 0.52 AML other m 2021-09-12T02:07:52.16
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

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 miniseed + resp format Download