Earthquake with magnitude of ML 0.8 on date 12-09-2021 and time 10:26:18 (Italy) in region 2 km E Casalattico (FR)

A magnitude ML 0.8 earthquake occured in region: 2 km E Casalattico (FR), on

  • 12-09-2021 08:26:18 (UTC)
  • 12-09-2021 10:26:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.623, 13.747 at 11 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
Casalattico FR 2 574 574
Casalvieri FR 3 2698 3272
Atina FR 5 4316 7588
Gallinaro FR 6 1269 8857
Vicalvi FR 7 783 9640
Belmonte Castello FR 7 739 10379
Alvito FR 7 2713 13092
Villa Latina FR 8 1241 14333
Fontechiari FR 8 1303 15636
Terelle FR 8 422 16058
Posta Fibreno FR 9 1139 17197
Colle San Magno FR 9 699 17896
Santopadre FR 10 1357 19253
Roccasecca FR 10 7365 26618
Settefrati FR 10 728 27346
Picinisco FR 11 1218 28564
Castrocielo FR 11 3965 32529
San Donato Val di Comino FR 11 2107 34636
Arpino FR 12 7262 41898
Villa Santa Lucia FR 13 2632 44530
Broccostella FR 13 2741 47271
Sant'Elia Fiumerapido FR 14 6166 53437
Piedimonte San Germano FR 14 6535 59972
Colfelice FR 14 1932 61904
Rocca d'Arce FR 14 959 62863
Campoli Appennino FR 14 1725 64588
Arce FR 15 5756 70344
Aquino FR 15 5370 75714
San Biagio Saracinisco FR 15 349 76063
Isola del Liri FR 16 11715 87778
Sora FR 16 26144 113922
Vallerotonda FR 16 1581 115503
Cassino FR 16 36142 151645
Pescosolido FR 16 1555 153200
Fontana Liri FR 16 2953 156153
Castelliri FR 17 3454 159607
Opi AQ 19 420 160027
Monte San Giovanni Campano FR 19 12929 172956
Acquafondata FR 19 263 173219
Pontecorvo FR 20 13242 186461

Municipalities with at least 50000 inhabitants

An earthquake occurred to
72 Km E of Latina (125985 inhabitants)
78 Km NW of Caserta (76326 inhabitants)
81 Km E of Velletri (53303 inhabitants)
82 Km NW of Aversa (53047 inhabitants)
86 Km SE of L'Aquila (69753 inhabitants)
86 Km NW of Giugliano in Campania (122974 inhabitants)
87 Km E of Tivoli (56533 inhabitants)
88 Km SW of Chieti (51815 inhabitants)
89 Km NW of Marano di Napoli (59874 inhabitants)
91 Km NW of Afragola (65057 inhabitants)
91 Km NW of Pozzuoli (81661 inhabitants)
91 Km E of Aprilia (73446 inhabitants)
92 Km NW of Acerra (59573 inhabitants)
92 Km NW of Casoria (77642 inhabitants)
94 Km E of Guidonia Montecelio (88673 inhabitants)
95 Km E of Anzio (54211 inhabitants)
97 Km NW of Napoli (974074 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 0.8 2021-09-12
08:26:18
41.6227 13.7467 11 2021-09-12
08:35:54
Sala Sismica INGV-Roma 95334161
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-12 08:26:18 ± 0.1
Latitude 41.6227 ± 0.0063
Longitude 13.7467 ± 0.0084
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95334161

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 861
Semi-minor axis of confidence ellipse (meter) 497
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 226
Circular confidence region, given by single value of horizontal uncertainty (meter) 860
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 185
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.40649
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 95334161
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-12 08:35:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CRJA.HHZ. 2021-09-12T08:28:14.07 3.0 undecidable manual Sg 7.6 0
IV.FREG.EHZ. 2021-09-12T08:28:03.54 3.0 undecidable manual Sn -9.51 0
CR.STON.BHZ. 2021-09-12T08:27:56.00 3.0 undecidable manual Sg 10.86 0
GU.GSCL.HHZ. 2021-09-12T08:27:56.24 3.0 undecidable manual Sg 5.47 0
IV.GIZZ.HHZ. 2021-09-12T08:27:55.72 3.0 undecidable manual Sg 4.17 0
IV.MUCR.HHZ. 2021-09-12T08:27:52.58 3.0 undecidable manual Sn -9.92 0
IV.SERS.HHZ. 2021-09-12T08:27:51.67 3.0 undecidable manual Sn -4.19 0
IV.SELL.HHZ. 2021-09-12T08:27:49.15 3.0 undecidable manual Sn -7.01 0
GU.ROTM.HHZ. 2021-09-12T08:27:46.62 3.0 negative manual Pg 15.97 0
IV.CAPR.HNZ. 2021-09-12T08:27:44.40 3.0 undecidable manual Pg 17.09 0
IV.BRSN.EHZ. 2021-09-12T08:27:37.08 3.0 undecidable manual Sg 2.58 0
IV.CAGR.HHZ. 2021-09-12T08:27:33.80 3.0 undecidable manual Pg 12.68 0
CH.MUGIO.HHZ. 2021-09-12T08:27:32.04 3.0 undecidable manual Pn -3.7 0
IV.CADC.EHZ. 2021-09-12T08:27:31.69 3.0 negative manual Pg 7.5 0
IV.CRJA.HHZ. 2021-09-12T08:27:27.91 3.0 negative manual Pg 9.46 0
IV.FREG.EHZ. 2021-09-12T08:27:23.87 3.0 negative manual Pn 1.72 0
IV.SBPO.HNZ. 2021-09-12T08:27:21.74 3.0 undecidable manual Pg 6.48 0
IV.TRIF.CHZ. 2021-09-12T08:27:21.47 3.0 undecidable manual Sn -5.62 0
IV.GIZZ.HHZ. 2021-09-12T08:27:15.26 3.0 positive manual Pg 5.19 0
IV.CDRU.HNZ. 2021-09-12T08:27:14.47 3.0 undecidable manual Sg 2.54 0
IV.EMSG.HHZ. 2021-09-12T08:27:14.00 3.0 undecidable manual Pn -5.38 0
IV.NDIM.HHZ. 2021-09-12T08:27:13.83 3.0 negative manual Pn 0.33 0
IV.SERS.HHZ. 2021-09-12T08:27:10.86 3.0 undecidable manual Pn -1.63 0
IV.PLMA.HHZ. 2021-09-12T08:27:06.76 3.0 undecidable manual Pn -5.48 0
IV.CAFE.HHZ. 2021-09-12T08:26:56.99 3.0 undecidable manual Sn -5.31 0
IV.APEC.HNZ. 2021-09-12T08:26:53.89 3.0 undecidable manual Pg 3.8 0
IV.VIVA.HHZ. 2021-09-12T08:26:40.90 3.0 undecidable manual S -0.43 0
IV.MIDA.HNZ. 2021-09-12T08:26:32.33 0.6 undecidable manual S 87 0.3795 50 0.47 44
IV.INTR.HHZ. 2021-09-12T08:26:32.61 0.6 undecidable manual S 17 0.4065 50 -0.04 48
IV.VVLD.HNE. 2021-09-12T08:26:28.41 0.6 undecidable manual S 340 0.2635 50 -0.01 49
IV.INTR.HHZ. 2021-09-12T08:26:26.27 0.3 undecidable manual P 17 0.4065 50 -0.25 68
IV.CERA.HHZ. 2021-09-12T08:26:26.64 0.6 undecidable manual S 97 0.2041 50 -0.03 50
IV.MIDA.HNZ. 2021-09-12T08:26:25.81 0.3 undecidable manual P 87 0.3795 50 -0.25 69
IV.LRP.EHZ. 2021-09-12T08:26:24.07 0.6 undecidable manual S 282 0.1223 129 -0.11 49
IV.VVLD.HNE. 2021-09-12T08:26:24.28 0.3 undecidable manual P 340 0.2635 50 0.2 71
IV.CERA.HHZ. 2021-09-12T08:26:23.00 0.1 undecidable manual P 97 0.2041 50 -0.06 98
IV.POFI.HHZ. 2021-09-12T08:26:23.46 0.6 undecidable manual S 345 0.098 135 -0.04 50
IV.POFI.HHZ. 2021-09-12T08:26:21.32 0.1 undecidable manual P 345 0.098 135 0.09 100
IV.LRP.EHZ. 2021-09-12T08:26:21.73 0.3 undecidable manual P 282 0.1223 129 0.1 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.POFI.HHN. ML:0.6 4.37E-5 0.58 AML other m 2021-09-12T08:26:23.83
IV.LRP.EHE. ML:1.1 0.0001173 0.62 AML other m 2021-09-12T08:26:24.38
IV.LRP.EHN. ML:0.6 3.98E-5 0.24 AML other m 2021-09-12T08:26:24.67
IV.POFI.HHE. ML:0.6 4.7E-5 0.16 AML other m 2021-09-12T08:26:25.16
IV.CERA.HHN. ML:1 6.61E-5 0.6 AML other m 2021-09-12T08:26:27.08
IV.CERA.HHE. ML:0.8 3.905E-5 0.86 AML other m 2021-09-12T08:26:30.16
IV.VIVA.HHN. ML:2.6 0.0005215 0.62 AML other m 2021-09-12T08:26:41.69
IV.VIVA.HHE. ML:2.8 0.000797 0.96 AML other m 2021-09-12T08:26:41.78
IV.SBPO.HNN. ML:4.2 0.0006685 1.28 AML other m 2021-09-12T08:27:22.83
IV.EMSG.HHE. ML:3.8 0.000284 1.18 AML other m 2021-09-12T08:27:39.90
IV.SBPO.HNE. ML:4.8 0.00281 0.06 AML other m 2021-09-12T08:27:43.84
IV.EMSG.HHN. ML:3.7 0.0002375 1.58 AML other m 2021-09-12T08:27:46.09
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