Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 21-08-2018 and time 07:51:33 (Italy) in region 5 km SE Montecilfone (CB)

A magnitude ML 2.3 earthquake occured in region: 5 km SE Montecilfone (CB), on

  • 21-08-2018 05:51:33 (UTC)
  • 21-08-2018 07:51:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.8610, 14.8600 at 17 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
Montecilfone CB 5 1348 1348
Palata CB 7 1726 3074
Guglionesi CB 7 5321 8395
Larino CB 8 6793 15188
Guardialfiera CB 8 1065 16253
Acquaviva Collecroce CB 9 672 16925
Tavenna CB 10 718 17643
Montenero di Bisaccia CB 13 6675 24318
San Martino in Pensilis CB 13 4793 29111
Montorio nei Frentani CB 13 437 29548
Castelmauro CB 13 1505 31053
Casacalenda CB 13 2135 33188
San Felice del Molise CB 14 634 33822
Ururi CB 14 2693 36515
San Giacomo degli Schiavoni CB 14 1406 37921
Portocannone CB 14 2551 40472
Lupara CB 15 505 40977
Mafalda CB 15 1211 42188
Montelongo CB 16 365 42553
Provvidenti CB 16 119 42672
Civitacampomarano CB 17 417 43089
Petacciato CB 17 3819 46908
Castelbottaccio CB 17 312 47220
Rotello CB 17 1212 48432
Morrone del Sannio CB 18 587 49019
Montemitro CB 18 395 49414
Campomarino CB 18 7712 57126
Montefalcone nel Sannio CB 18 1556 58682
Bonefro CB 19 1384 60066
Termoli CB 20 33739 93805
Ripabottoni CB 20 514 94319
Santa Croce di Magliano CB 20 4435 98754

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km W of San Severo (53905 inhabitants)
72 Km NW of Foggia (151991 inhabitants)
79 Km SE of Chieti (51815 inhabitants)
81 Km N of Benevento (60091 inhabitants)
86 Km SE of Pescara (121014 inhabitants)
92 Km W of Manfredonia (57279 inhabitants)
93 Km SE of Montesilvano (53738 inhabitants)
98 Km NE of Caserta (76326 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 2.3 2018-08-21
05:51:33		 41.8607 14.8603 17 2019-04-24
14:51:18		 Bollettino Sismico Italiano INGV 67242421
Reviewed
Rev100 		ML 2.3 2018-08-21
05:51:33		 41.8608 14.879 10 2018-08-21
06:01:40		 Sala Sismica INGV-Roma 60030041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-08-21 05:51:33 ± 0.15
Latitude 41.8607 ± 0.0072
Longitude 14.8603 ± 0.0097
Depth (km) 17 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 67242421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 792
Semi-minor axis of confidence ellipse (meter) 473
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 210
Circular confidence region, given by single value of horizontal uncertainty (meter) 790.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 82
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 35
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.97037
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 72
Type of magnitude ML
Reference to an origin 67242421
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-04-04 09:43:47

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 72
Type of magnitude ML
Reference to an origin 60030041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-08-21 06:01:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2018-08-21T05:52:05.69 3.0 negative manual Pn 1.63 0
IV.MF5.EHZ. 2018-08-21T05:52:02.76 3.0 undecidable manual P 1.49 0
IV.MMO1.EHZ. 2018-08-21T05:52:02.94 3.0 negative manual P 1.62 0
IV.INTR.HHZ. 2018-08-21T05:51:58.06 0.6 undecidable manual S 282 80.6637 95 0.37 41
IV.MOCO.HHZ. 2018-08-21T05:51:53.19 0.6 undecidable manual S 156 59.7957 97 1.03 33
IV.SACR.HHZ. 2018-08-21T05:51:50.35 0.6 undecidable manual S 194 53.0025 99 -0.01 47
IV.VCEL.EHZ. 2018-08-21T05:51:50.66 0.6 undecidable manual P 306 102.7194 94 -0.26 40
IV.SNAL.HHZ. 2018-08-21T05:51:50.63 0.6 undecidable manual P 164 107.7144 94 -1.06 30
IV.T0110.HHZ. 2018-08-21T05:51:50.01 0.6 undecidable manual P 295 98.2239 94 -0.22 41
IV.MSAG.HHZ. 2018-08-21T05:51:49.00 0.6 undecidable manual P 100 88.3449 95 0.29 42
IV.MRB1.HHZ. 2018-08-21T05:51:49.14 0.6 undecidable manual P 174 82.3509 95 1.35 27
IV.BSSO.HHZ. 2018-08-21T05:51:48.42 0.6 undecidable manual S 212 41.3253 102 1.13 32
IV.INTR.HHZ. 2018-08-21T05:51:47.02 0.3 undecidable manual P 282 80.6637 95 -0.51 60
IV.GATE.HHZ. 2018-08-21T05:51:47.11 0.6 undecidable manual S 174 38.7279 103 0.48 43
IV.CERA.HHZ. 2018-08-21T05:51:45.97 0.6 undecidable manual P 248 75.5688 95 -0.78 37
IV.VAGA.HHZ. 2018-08-21T05:51:45.58 0.3 undecidable manual P 227 71.6727 96 -0.57 60
IV.LPEL.HHZ. 2018-08-21T05:51:44.28 0.1 undecidable manual P 291 59.5959 97 -0.02 92
IV.TRIV.HHZ. 2018-08-21T05:51:44.58 0.6 undecidable manual S 248 27.6501 110 0.79 39
IV.MOCO.HHZ. 2018-08-21T05:51:44.29 0.3 undecidable manual P 156 59.7957 97 -0.04 69
IV.RNI2.HHZ. 2018-08-21T05:51:44.54 0.3 undecidable manual P 254 61.0944 97 0 70
IV.MELA.HHZ. 2018-08-21T05:51:43.64 0.6 undecidable manual S 128 27.9498 110 -0.22 47
IV.MIDA.HHZ. 2018-08-21T05:51:43.33 0.1 positive manual P 244 55.6998 98 -0.39 87
IV.SACR.HHZ. 2018-08-21T05:51:43.00 0.1 positive manual P 194 53.0025 99 -0.29 89
IV.APRC.HHZ. 2018-08-21T05:51:43.10 0.6 undecidable manual P 101 57.5979 98 -0.9 35
IV.CIGN.HHZ. 2018-08-21T05:51:42.39 0.6 undecidable manual S 171 23.1546 116 -0.3 47
IV.BSSO.HHZ. 2018-08-21T05:51:41.72 0.1 positive manual P 212 41.3253 102 0.2 92
IV.GATE.HHZ. 2018-08-21T05:51:41.86 0.1 undecidable manual P 174 38.7279 103 0.72 80
IV.FRES.HHZ. 2018-08-21T05:51:41.84 0.6 undecidable manual S 308 20.1687 120 -0.13 49
YD.T1411.EHZ. 2018-08-21T05:51:40.59 0.3 undecidable manual S 30 10.878 141 0.5 69
YD.T1413.EHZ. 2018-08-21T05:51:40.56 0.3 undecidable manual S 94 12.9759 136 0.11 75
IV.MELA.HHZ. 2018-08-21T05:51:39.24 0.1 negative manual P 128 27.9498 110 -0.3 92
IV.TRIV.HHZ. 2018-08-21T05:51:39.86 0.1 undecidable manual P 248 27.6501 110 0.35 92
YD.T1412.HNZ. 2018-08-21T05:51:39.51 0.6 undecidable manual S 222 11.4774 140 -0.67 44
IV.FRES.HHZ. 2018-08-21T05:51:38.77 0.1 undecidable manual P 308 20.1687 120 0.32 94
IV.CIGN.HHZ. 2018-08-21T05:51:38.80 0.1 undecidable manual P 171 23.1546 116 -0.07 98
YD.T1411.EHZ. 2018-08-21T05:51:37.49 0.1 positive manual P 30 10.878 141 0.13 100
YD.T1413.EHZ. 2018-08-21T05:51:37.51 0.1 positive manual P 94 12.9759 136 -0.07 99
YD.T1412.HNZ. 2018-08-21T05:51:36.98 0.1 positive manual P 222 11.4774 140 -0.44 93
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FRES.HHN. ML:2.1 0.0007375000000000001 0.74 AML other m 2018-08-21T05:51:39.43
YD.T1412.HNN. ML:2.9 0.007245 0.52 AML other m 2018-08-21T05:51:39.62
YD.T1412.HNE. ML:2.8 0.005785 0.36 AML other m 2018-08-21T05:51:40.06
YD.T1411.HNN. ML:3.1 0.010004999999999998 0.26 AML other m 2018-08-21T05:51:40.83
YD.T1411.EHN. ML:3.0 0.009375 0.28 AML other m 2018-08-21T05:51:40.84
YD.T1411.HNE. ML:3.3 0.0175 0.18 AML other m 2018-08-21T05:51:40.72
YD.T1411.EHE. ML:3.3 0.01785 0.18 AML other m 2018-08-21T05:51:40.72
YD.T1413.EHN. ML:3.2 0.01107 0.5 AML other m 2018-08-21T05:51:40.67
IV.CIGN.HHN. ML:2.4 0.001515 1.48 AML other m 2018-08-21T05:51:42.18
IV.FRES.HHE. ML:2.3 0.0011045 0.3 AML other m 2018-08-21T05:51:43.17
IV.MELA.HHN. ML:2.5 0.001585 0.5 AML other m 2018-08-21T05:51:44.25
IV.MELA.HNN. ML:2.5 0.00156 0.5 AML other m 2018-08-21T05:51:44.25
IV.MELA.HNE. ML:2.5 0.001555 0.18 AML other m 2018-08-21T05:51:44.79
IV.MELA.HHE. ML:2.6 0.001675 0.18 AML other m 2018-08-21T05:51:44.79
IV.CIGN.HHE. ML:2.3 0.00108 0.46 AML other m 2018-08-21T05:51:45.61
YD.T1413.EHE. ML:2.8 0.00495 1.14 AML other m 2018-08-21T05:51:45.38
IV.TRIV.HHN. ML:2.1 0.000689 1.62 AML other m 2018-08-21T05:51:46.82
IV.TRIV.HNN. ML:2.1 0.0006695 1.64 AML other m 2018-08-21T05:51:46.83
IV.TRIV.HNE. ML:2.1 0.0005899999999999999 0.8 AML other m 2018-08-21T05:51:48.41
IV.TRIV.HHE. ML:2.1 0.000618 0.8 AML other m 2018-08-21T05:51:48.41
IV.BSSO.HHE. ML:1.6 0.000117 0.82 AML other m 2018-08-21T05:51:49.25
IV.BSSO.HNE. ML:2.0 0.00027749999999999997 0.82 AML other m 2018-08-21T05:51:49.25
IV.GATE.HNE. ML:2.3 0.0006630000000000001 0.72 AML other m 2018-08-21T05:51:49.81
IV.GATE.HHE. ML:2.3 0.0006575 0.72 AML other m 2018-08-21T05:51:49.81
IV.BSSO.HHN. ML:1.5 0.0000926 1.32 AML other m 2018-08-21T05:51:49.91
IV.BSSO.HNN. ML:1.9 0.0002405 1.3 AML other m 2018-08-21T05:51:49.91
IV.SACR.HHE. ML:2.2 0.0003695 0.34 AML other m 2018-08-21T05:51:50.83
IV.SACR.HNE. ML:2.2 0.0003665 0.34 AML other m 2018-08-21T05:51:50.84
IV.SACR.HHN. ML:1.9 0.000176 1.3 AML other m 2018-08-21T05:51:52.73
IV.SACR.HNN. ML:1.9 0.00016849999999999998 0.28 AML other m 2018-08-21T05:51:52.23
IV.MIDA.HHN. ML:2.2 0.00036150000000000006 0.52 AML other m 2018-08-21T05:51:52.23
IV.MIDA.HHE. ML:2.3 0.0004545 1.14 AML other m 2018-08-21T05:51:52.84
IV.GATE.HNN. ML:2.2 0.000493 0.4 AML other m 2018-08-21T05:51:52.79
IV.GATE.HHN. ML:2.2 0.0005365 0.42 AML other m 2018-08-21T05:51:52.59
IV.RNI2.HHN. ML:2.4 0.000489 0.22 AML other m 2018-08-21T05:51:53.64
IV.RNI2.HNN. ML:2.4 0.00046899999999999996 0.22 AML other m 2018-08-21T05:51:53.75
IV.APRC.HHE. ML:2.4 0.0004835 0.16 AML other m 2018-08-21T05:51:54.43
IV.RNI2.HNE. ML:2.4 0.0005024999999999999 1.64 AML other m 2018-08-21T05:51:55.14
IV.RNI2.HHE. ML:2.4 0.000506 1.64 AML other m 2018-08-21T05:51:55.14
IV.APRC.HHN. ML:2.6 0.000755 0.34 AML other m 2018-08-21T05:51:55.32
IV.LPEL.HHN. ML:2.2 0.00033699999999999995 0.3 AML other m 2018-08-21T05:51:55.50
IV.LPEL.HHE. ML:2.2 0.0002855 0.22 AML other m 2018-08-21T05:51:56.13
IV.MOCO.HHN. ML:1.6 0.0000844 0.42 AML other m 2018-08-21T05:51:57.25
IV.INTR.HHE. ML:2.0 0.000123 1.44 AML other m 2018-08-21T05:51:59.19
IV.MOCO.HHE. ML:1.9 0.000177 0.46 AML other m 2018-08-21T05:51:59.96
IV.INTR.HHN. ML:2.4 0.000311 0.78 AML other m 2018-08-21T05:52:02.81
IV.VAGA.HNE. ML:2.0 0.000142 1.08 AML other m 2018-08-21T05:52:02.38
IV.VAGA.HHE. ML:2.0 0.00015200000000000004 1.08 AML other m 2018-08-21T05:52:02.38
IV.VAGA.HHN. ML:2.2 0.00022250000000000001 1.7 AML other m 2018-08-21T05:52:02.94
IV.VAGA.HNN. ML:2.1 0.00021349999999999999 1.7 AML other m 2018-08-21T05:52:02.94
IV.MSAG.HHN. ML:2.5 0.00035 0.18 AML other m 2018-08-21T05:52:04.00
IV.INTR.HNE. ML:2.7 0.000727 1.12 AML other m 2018-08-21T05:52:04.86
IV.MSAG.HNN. ML:2.8 0.0008200000000000001 0.88 AML other m 2018-08-21T05:52:04.00
IV.MRB1.HNE. ML:2.3 0.000284 0.44 AML other m 2018-08-21T05:52:04.74
IV.MRB1.HHE. ML:2.3 0.00026749999999999994 0.42 AML other m 2018-08-21T05:52:04.74
IV.MSAG.HNE. ML:2.4 0.00028799999999999995 0.96 AML other m 2018-08-21T05:52:06.53
IV.MSAG.HHE. ML:2.0 0.00011300000000000001 0.96 AML other m 2018-08-21T05:52:06.53
IV.INTR.HNN. ML:2.6 0.000517 1.58 AML other m 2018-08-21T05:52:06.02
IV.SNAL.HHN. ML:2.3 0.0001815 0.86 AML other m 2018-08-21T05:52:09.03
IV.SNAL.HNN. ML:2.3 0.0001905 0.42 AML other m 2018-08-21T05:52:09.54
IV.MRB1.HNN. ML:2.4 0.0003265 1.52 AML other m 2018-08-21T05:52:10.90
IV.T0110.HHN. ML:2.2 0.00018099999999999998 0.58 AML other m 2018-08-21T05:52:10.05
IV.T0110.HHE. ML:2.4 0.000242 0.54 AML other m 2018-08-21T05:52:10.45
IV.VCEL.EHN. ML:2.5 0.0003015 0.42 AML other m 2018-08-21T05:52:10.38
IV.SNAL.HHE. ML:2.4 0.00024249999999999999 1.22 AML other m 2018-08-21T05:52:11.25
IV.SNAL.HNE. ML:2.5 0.000293 1.22 AML other m 2018-08-21T05:52:11.26
IV.MRB1.HHN. ML:2.4 0.000289 0.62 AML other m 2018-08-21T05:52:13.39
IV.VCEL.EHE. ML:2.4 0.000258 0.4 AML other m 2018-08-21T05:52:14.53
IV.PALZ.HHN. ML:2.5 0.0002 1.08 AML other m 2018-08-21T05:52:15.95
IV.PALZ.HHE. ML:2.5 0.0001965 0.48 AML other m 2018-08-21T05:52:19.42
IV.MF5.EHN. ML:2.4 0.00009615 0.58 AML other m 2018-08-21T05:52:25.76
IV.MF5.EHE. ML:2.4 0.00009905 0.82 AML other m 2018-08-21T05:52:26.74
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
Waveforms Seismic signals in miniseed + resp format Download