Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 31-10-2021 and time 20:59:35 (UTC) in region 3 km SW Verbicaro (CS)

A magnitude ML 1.4 earthquake occured in region: 3 km SW Verbicaro (CS), on

  • 31-10-2021 20:59:35 (UTC)
  • 31-10-2021 21:59:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 39.7310, 15.9000 at 27 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Verbicaro CS 3 3056 3056
Grisolia CS 4 2249 5305
Maierà CS 4 1224 6529
Buonvicino CS 5 2247 8776
Santa Maria del Cedro CS 6 4954 13730
Orsomarso CS 8 1265 14995
Diamante CS 9 5329 20324
Santa Domenica Talao CS 11 1263 21587
Scalea CS 13 10913 32500
Belvedere Marittimo CS 13 9371 41871
San Donato di Ninea CS 13 1360 43231
San Sosti CS 14 2185 45416
Sant'Agata di Esaro CS 14 1890 47306
Sangineto CS 14 1338 48644
San Nicola Arcella CS 16 1957 50601
Papasidero CS 16 734 51335
Bonifati CS 16 2858 54193
Acquaformosa CS 16 1106 55299
Mottafollone CS 17 1236 56535
Lungro CS 19 2592 59127
Mormanno CS 19 3027 62154
Malvito CS 20 1795 63949

Municipalities with at least 50000 inhabitants

An earthquake occurred to
57 Km NW of Cosenza (67546 inhabitants)
91 Km NW of Lamezia Terme (70714 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.4 2021-10-31
20:59:35		 39.7307 15.8998 27 2022-03-30
13:04:34		 Bollettino Sismico Italiano INGV 100487181
Reviewed
Rev100 		ML 1.5 2021-10-31
20:59:35		 39.7342 15.8993 27 2021-10-31
21:06:44		 Sala Sismica INGV-Roma 97118411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-31 20:59:35 ± 0.16
Latitude 39.7307 ± 0.0063
Longitude 15.8998 ± 0.0117
Depth (km) 27 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 100487181

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1004
Semi-minor axis of confidence ellipse (meter) 377
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 58
Circular confidence region, given by single value of horizontal uncertainty (meter) 1000.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 117
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.03777
Epicentral distance of station farthest from the epicenter (degree) 0.57197
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 25
Type of magnitude ML
Reference to an origin 100487181
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-01 16:23:35

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 97118411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-31 21:06:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CELI.HHZ. 2021-10-31T20:59:55.28 0.3 undecidable manual S 125 63.492 107 0.22 67
IV.BULG.HHZ. 2021-10-31T20:59:54.58 0.3 undecidable manual S 311 58.8966 109 0.7 59
IV.SPS2.HHZ. 2021-10-31T20:59:54.23 0.6 undecidable manual S 142 61.5939 108 -0.34 43
IV.CAR1.HHZ. 2021-10-31T20:59:53.29 0.3 undecidable manual S 153 59.2962 109 -0.7 58
IV.SIRI.HHZ. 2021-10-31T20:59:51.54 0.3 undecidable manual S 357 50.1165 112 -0.17 69
IV.MGR.HHZ. 2021-10-31T20:59:51.92 0.3 undecidable manual S 327 53.9016 111 -0.72 59
IV.TDS.HHE. 2021-10-31T20:59:48.83 0.3 undecidable manual S 102 38.1285 120 0 73
IV.SPS2.HHZ. 2021-10-31T20:59:46.27 0.6 undecidable manual P 142 61.5939 108 -0.02 46
IV.CELI.HHZ. 2021-10-31T20:59:46.88 0.3 undecidable manual P 125 63.492 107 0.3 66
IV.BULG.HHZ. 2021-10-31T20:59:45.97 0.3 undecidable manual P 311 58.8966 109 0.07 70
IV.CET2.HHZ. 2021-10-31T20:59:45.53 0.3 undecidable manual S 168 22.8549 135 -0.03 75
IV.MGR.HHZ. 2021-10-31T20:59:45.01 0.1 undecidable manual P 327 53.9016 111 -0.18 91
IV.CAR1.HHZ. 2021-10-31T20:59:45.74 0.6 undecidable manual P 153 59.2962 109 -0.22 45
IV.MMN.HHZ. 2021-10-31T20:59:44.79 0.3 undecidable manual S 23 19.3695 141 -0.15 74
IV.SIRI.HHZ. 2021-10-31T20:59:44.66 0.1 undecidable manual P 357 50.1165 112 0.01 96
IV.TDS.HHE. 2021-10-31T20:59:43.25 0.3 undecidable manual P 102 38.1285 120 0.27 69
IV.GRIS.EHZ. 2021-10-31T20:59:42.92 0.3 undecidable manual S 285 4.1958 170 -0.28 74
IV.CET2.HHZ. 2021-10-31T20:59:41.51 0.1 negative manual P 168 22.8549 135 0.41 92
IV.MMN.HHZ. 2021-10-31T20:59:40.83 0.1 undecidable manual P 23 19.3695 141 0.09 99
IV.GRIS.EHZ. 2021-10-31T20:59:39.91 0.1 positive manual P 285 4.1958 170 0.17 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SIRI.HNE. ML:1.6 0.000080530135 23.8592 AML other m 2021-10-31T20:59:26.14
IV.GRIS.EHN. ML:1.8 0.0003695 1.92 AML other m 2021-10-31T20:59:42.02
IV.GRIS.EHE. ML:1.5 0.0001855 0.64 AML other m 2021-10-31T20:59:43.52
IV.MMN.HHN. ML:1.7 0.0002395 0.16 AML other m 2021-10-31T20:59:45.33
IV.CET2.HHE. ML:1.8 0.000235 0.1 AML other m 2021-10-31T20:59:45.64
IV.CET2.HHN. ML:2.1 0.00056653885 0.128 AML other m 2021-10-31T20:59:45.69
IV.MMN.HHE. ML:1.4 0.000112038855 0.1024 AML other m 2021-10-31T20:59:46.21
IV.SIRI.HHE. ML:1.2 0.000038100000000000005 1.74 AML other m 2021-10-31T20:59:52.05
IV.SIRI.HHN. ML:1.2 0.000036522025 0.2048 AML other m 2021-10-31T20:59:52.61
IV.SIRI.HNN. ML:1.4 0.00005618958 0.256 AML other m 2021-10-31T20:59:52.72
IV.MGR.HNN. ML:1.5 0.0000688322 0.2304 AML other m 2021-10-31T20:59:53.21
IV.MGR.HHN. ML:1.3 0.00004725 0.34 AML other m 2021-10-31T20:59:53.21
IV.MGR.HNE. ML:1.6 0.00007372516 0.2688 AML other m 2021-10-31T20:59:53.64
IV.MGR.HHE. ML:1.5 0.00006305 0.26 AML other m 2021-10-31T20:59:53.52
IV.CAR1.HHN. ML:1.1 0.000023093435 0.2048 AML other m 2021-10-31T20:59:54.34
IV.SPS2.HHE. ML:1.0 0.00001825 0.34 AML other m 2021-10-31T20:59:54.62
IV.CAR1.HHE. ML:1.2 0.000027620985 0.2176 AML other m 2021-10-31T20:59:54.94
IV.SPS2.HHN. ML:0.9 0.00001685 0.28 AML other m 2021-10-31T20:59:54.85
IV.CELI.HHN. ML:1.1 0.000021351015 0.3968 AML other m 2021-10-31T20:59:55.74
IV.BULG.HHE. ML:1.4 0.00004475 0.2 AML other m 2021-10-31T20:59:55.89
IV.BULG.HNE. ML:1.4 0.000044962324999999996 0.2304 AML other m 2021-10-31T20:59:55.91
IV.CELI.HHE. ML:0.9 0.000014704785000000001 0.2432 AML other m 2021-10-31T20:59:56.54
IV.BULG.HHN. ML:1.4 0.00004784374500000001 0.1536 AML other m 2021-10-31T20:59:56.61
IV.BULG.HNN. ML:1.5 0.000054745437 0.3968 AML other m 2021-10-31T20:59:57.39
IV.CELI.HNE. ML:1.2 0.00002885099 0.7552 AML other m 2021-10-31T20:59:59.37
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